/* /assets/scriptaculous/5.1.0.5/prototype.js */;
/*  Prototype JavaScript framework, version 1.6.0.3
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.3',

  Browser: {
    IE:     !!(window.attachEvent &&
      navigator.userAgent.indexOf('Opera') === -1),
    Opera:  navigator.userAgent.indexOf('Opera') > -1,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 &&
      navigator.userAgent.indexOf('KHTML') === -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    SelectorsAPI: !!document.querySelector,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div')['__proto__'] &&
      document.createElement('div')['__proto__'] !==
        document.createElement('form')['__proto__']
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value;
        value = (function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return !!(object && object.nodeType == 1);
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  defer: function() {
    var args = [0.01].concat($A(arguments));
    return this.delay.apply(this, args);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.stripTags().replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator.call(context, value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator.call(context, value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator.call(context, value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    var result;
    this.each(function(value, index) {
      if (iterator.call(context, value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator.call(context, value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    this.each(function(value, index) {
      memo = iterator.call(context, memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator.call(context, value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    return this.map(function(value, index) {
      return {
        value: value,
        criteria: iterator.call(context, value, index)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    // In Safari, only use the `toArray` method if it's not a NodeList.
    // A NodeList is a function, has an function `item` property, and a numeric
    // `length` property. Adapted from Google Doctype.
    if (!(typeof iterable === 'function' && typeof iterable.length ===
        'number' && typeof iterable.item === 'function') && iterable.toArray)
      return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator, context) {
    $R(0, this, true).each(iterator, context);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      // simulating poorly supported hasOwnProperty
      if (this._object[key] !== Object.prototype[key])
        return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.inject([], function(results, pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return results.concat(values.map(toQueryPair.curry(key)));
        } else results.push(toQueryPair(key, values));
        return results;
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
  if (element) this.Element.prototype = element.prototype;
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    element = $(element);
    element.style.display = 'none';
    return element;
  },

  show: function(element) {
    element = $(element);
    element.style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      Element.select(element, expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) return true;

    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value || value == 'auto') {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = element.getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (Prototype.Browser.Opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName.toUpperCase() == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body && element != document)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      // IE throws an error if element is not in document
      try { element.offsetParent }
      catch(e) { return $(document.body) }
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        try { element.offsetParent }
        catch(e) { return Element._returnOffset(0,0) }
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
      try { element.offsetParent }
      catch(e) { return Element._returnOffset(0,0) }
      return proceed(element);
    }
  );

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName.toUpperCase() == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return !!(node && node.specified);
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div')['__proto__']) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div')['__proto__'];
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName.toUpperCase(), property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName)['__proto__'];
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { }, B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      if (B.WebKit && !document.evaluate) {
        // Safari <3.0 needs self.innerWidth/Height
        dimensions[d] = self['inner' + D];
      } else if (B.Opera && parseFloat(window.opera.version()) < 9.5) {
        // Opera <9.5 needs document.body.clientWidth/Height
        dimensions[d] = document.body['client' + D]
      } else {
        dimensions[d] = document.documentElement['client' + D];
      }
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum's DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();

    if (this.shouldUseSelectorsAPI()) {
      this.mode = 'selectorsAPI';
    } else if (this.shouldUseXPath()) {
      this.mode = 'xpath';
      this.compileXPathMatcher();
    } else {
      this.mode = "normal";
      this.compileMatcher();
    }

  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(e))
      return false;

    return true;
  },

  shouldUseSelectorsAPI: function() {
    if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

    if (!Selector._div) Selector._div = new Element('div');

    // Make sure the browser treats the selector as valid. Test on an
    // isolated element to minimize cost of this check.
    try {
      Selector._div.querySelector(this.expression);
    } catch(e) {
      return false;
    }

    return true;
  },

  compileMatcher: function() {
    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
            new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    var e = this.expression, results;

    switch (this.mode) {
      case 'selectorsAPI':
        // querySelectorAll queries document-wide, then filters to descendants
        // of the context element. That's not what we want.
        // Add an explicit context to the selector if necessary.
        if (root !== document) {
          var oldId = root.id, id = $(root).identify();
          e = "#" + id + " " + e;
        }

        results = $A(root.querySelectorAll(e)).map(Element.extend);
        root.id = oldId;

        return results;
      case 'xpath':
        return document._getElementsByXPath(this.xpath, root);
      default:
       return this.matcher(root);
    }
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0)]",
      'checked':     "[@checked]",
      'disabled':    "[(@disabled) and (@type!='hidden')]",
      'enabled':     "[not(@disabled) and (@type!='hidden')]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[((?:[\w]+:)?[\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || node.firstChild) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled && (!node.type || node.type !== 'hidden'))
          results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
    '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
    '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
     '-').include('-' + (v || "").toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, value) {
    if (Object.isUndefined(value))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, currentValue, single = !Object.isArray(value);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        currentValue = this.optionValue(opt);
        if (single) {
          if (currentValue == value) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = value.include(currentValue);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      event = Event.extend(event);

      var node          = event.target,
          type          = event.type,
          currentTarget = event.currentTarget;

      if (currentTarget && currentTarget.tagName) {
        // Firefox screws up the "click" event when moving between radio buttons
        // via arrow keys. It also screws up the "load" and "error" events on images,
        // reporting the document as the target instead of the original image.
        if (type === 'load' || type === 'error' ||
          (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
            && currentTarget.type === 'radio'))
              node = currentTarget;
      }
      if (node.nodeType == Node.TEXT_NODE) node = node.parentNode;
      return Element.extend(node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      var docElement = document.documentElement,
      body = document.body || { scrollLeft: 0, scrollTop: 0 };
      return {
        x: event.pageX || (event.clientX +
          (docElement.scrollLeft || body.scrollLeft) -
          (docElement.clientLeft || 0)),
        y: event.pageY || (event.clientY +
          (docElement.scrollTop || body.scrollTop) -
          (docElement.clientTop || 0))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents")['__proto__'];
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }


  // Internet Explorer needs to remove event handlers on page unload
  // in order to avoid memory leaks.
  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  // Safari has a dummy event handler on page unload so that it won't
  // use its bfcache. Safari <= 3.1 has an issue with restoring the "document"
  // object when page is returned to via the back button using its bfcache.
  if (Prototype.Browser.WebKit) {
    window.addEventListener('unload', Prototype.emptyFunction, false);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();
/* /assets/scriptaculous/5.1.0.5/scriptaculous.js */;
// script.aculo.us scriptaculous.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// For details, see the script.aculo.us web site: http://script.aculo.us/

var Scriptaculous = {
  Version: '1.8.2',
  require: function(libraryName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
  },
  REQUIRED_PROTOTYPE: '1.6.0.3',
  load: function() {
    function convertVersionString(versionString) {
      var v = versionString.replace(/_.*|\./g, '');
      v = parseInt(v + '0'.times(4-v.length));
      return versionString.indexOf('_') > -1 ? v-1 : v;
    }

    if((typeof Prototype=='undefined') ||
       (typeof Element == 'undefined') ||
       (typeof Element.Methods=='undefined') ||
       (convertVersionString(Prototype.Version) <
        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
        Scriptaculous.REQUIRED_PROTOTYPE);

// Tapestry turns off this mechanism, and replaces it with RenderSupport.addScriptLink().

//    var js = /scriptaculous\.js(\?.*)?$/;
//    $$('head script[src]').findAll(function(s) {
//      return s.src.match(js);
//    }).each(function(s) {
//      var path = s.src.replace(js, ''),
//      includes = s.src.match(/\?.*load=([a-z,]*)/);
//      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
//       function(include) { Scriptaculous.require(path+include+'.js') });
//    });
  }
};

Scriptaculous.load();
/* /assets/scriptaculous/5.1.0.5/effects.js */;
// script.aculo.us effects.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

// converts rgb() and #xxx to #xxxxxx format,
// returns self (or first argument) if not convertable
String.prototype.parseColor = function() {
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {
    var cols = this.slice(4,this.length-1).split(',');
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
  } else {
    if (this.slice(0,1) == '#') {
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
      if (this.length==7) color = this.toLowerCase();
    }
  }
  return (color.length==7 ? color : (arguments[0] || this));
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue :
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue :
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);
  element.setStyle({fontSize: (percent/100) + 'em'});
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + .5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + .75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + .5;
    },
    pulse: function(pos, pulses) {
      return (-Math.cos((pos*((pulses||5)-.5)*2)*Math.PI)/2) + .5;
    },
    spring: function(pos) {
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';

    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character),
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') ||
        Object.isFunction(element)) &&
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;

    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ?
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();

    var position = Object.isString(effect.options.queue) ?
      effect.options.queue : effect.options.queue.position;

    switch(position) {
      case 'front':
        // move unstarted effects after this effect
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }

    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);

    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++)
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;

    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;

    this.render = (function() {
      function dispatch(effect, eventName) {
        if (effect.options[eventName + 'Internal'])
          effect.options[eventName + 'Internal'](effect);
        if (effect.options[eventName])
          effect.options[eventName](effect);
      }

      return function(pos) {
        if (this.state === "idle") {
          this.state = "running";
          dispatch(this, 'beforeSetup');
          if (this.setup) this.setup();
          dispatch(this, 'afterSetup');
        }
        if (this.state === "running") {
          pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
          this.position = pos;
          dispatch(this, 'beforeUpdate');
          if (this.update) this.update(pos);
          dispatch(this, 'afterUpdate');
        }
      };
    })();

    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ?
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish();
        this.event('afterFinish');
        return;
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ?
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(),
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) :
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element,
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');

    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));

    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;

    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));

    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;

    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
  scrollOffsets = document.viewport.getScrollOffsets(),
  elementOffsets = $(element).cumulativeOffset();

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()); }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) {
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity});
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show();
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = {
    opacity: element.getInlineOpacity(),
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200,
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
     Object.extend({ duration: 1.0,
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element);
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false,
      scaleX: false,
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      }
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({
    scaleContent: false,
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show();
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, {
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) {
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      });
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned();
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        }
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}); }}); }}); }}); }}); }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({
    scaleContent: false,
    scaleX: false,
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show();
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false,
    scaleX: false,
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, {
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping();
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping();
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var initialMoveX, initialMoveY;
  var moveX, moveY;

  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0;
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }

  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01,
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show();
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
             }
           }, options)
      );
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;

  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }

  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping();
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { },
    oldOpacity = element.getInlineOpacity(),
    transition = options.transition || Effect.Transitions.linear,
    reverser   = function(pos){
      return 1 - transition((-Math.cos((pos*(options.pulses||5)*2)*Math.PI)/2) + .5);
    };

  return new Effect.Opacity(element,
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, {
      scaleContent: false,
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });

    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        };
      }
    }
    this.start(options);
  },

  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 );
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return {
        style: property.camelize(),
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      );
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] =
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) +
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');

Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }

  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]);
  });

  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
      results[property] = css[property];
      return results;
    });
    if (!styles.opacity) styles.opacity = element.getOpacity();
    return styles;
  };
}

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element);
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) {
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    };
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);
/* /assets/tapestry/5.1.0.5/tapestry.js */;
// Copyright 2007, 2008, 2009 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

var Tapestry = {

    /** Event that allows observers to perform cross-form validation after individual
     *  fields have performed their validation. The form element is passed as the
     *  event memo. Observers may set the validationError property of the Form's Tapestry object to true (which
     *  will prevent form submission).
     */
    FORM_VALIDATE_EVENT : "tapestry:formvalidate",

    /** Event fired just before the form submits, to allow observers to make
     *  final preparations for the submission, such as updating hidden form fields.
     *  The form element is passed as the event memo.
     */
    FORM_PREPARE_FOR_SUBMIT_EVENT : "tapestry:formprepareforsubmit",

    /**
     *  Form event fired after prepare.
     */
    FORM_PROCESS_SUBMIT_EVENT : "tapestry:formprocesssubmit",

    /** Event, fired on a field element, to cause observers to validate the input. Passes a memo object with
     * two keys: "value" (the raw input value) and "translated" (the parsed value, usually meaning a number
     * parsed from a string).  Observers may invoke Element.showValidationMessage()
     *  to identify that the field is in error (and decorate the field and show a popup error message).
     */
    FIELD_VALIDATE_EVENT : "tapestry:fieldvalidate",

    /** Event, fired on the document object, which identifies the current focus input element. */
    FOCUS_CHANGE_EVENT : "tapestry:focuschange",

    /** Event, fired on a zone element when the zone is updated with new content. */
    ZONE_UPDATED_EVENT : "tapestry:zoneupdated",

    /** When false, the default, the Tapestry.debug() function will be a no-op. */
    DEBUG_ENABLED : false,

    /** Time, in seconds, that console messages are visible. */
    CONSOLE_DURATION : 10,

    // Initially, false, set to true once the page is fully loaded.

    pageLoaded : false,

    /**
     * Invoked from onclick event handlers built into links and forms. Raises a dialog
     * if the page is not yet fully loaded.
     */
    waitForPage : function(event)
    {
        if (Tapestry.pageLoaded) return;

        Event.extend(event || window.event).stop();

        var body = $(document.body);

        // The overlay is stretched to cover the full screen (including scrolling areas)
        // and is used to fade out the background ... and prevent keypresses (its z-order helps there).

        var overlay = new Element("div", {
            'class' : 't-dialog-overlay'
        });
        overlay.setOpacity(0.0);

        body.insert({
            top: overlay
        });

        new Effect.Appear(overlay, {
            duration: 0.2,
            from: 0.0
        });

        var messageDiv = new Element("div", {
            'class' : 't-page-loading-banner'
        }).update(Tapestry.Messages.pageIsLoading);
        overlay.insert({
            top: messageDiv
        });

        var hideDialog = function()
        {
            new Effect.Fade(overlay, {
                duration: 0.2,
                afterFinish: function()
                {
                    overlay.remove();
                }
            });
        };

        document.observe("dom:loaded", hideDialog);

        // A rare race condition.

        if (Tapestry.pageLoaded)
            hideDialog.call(null);
    },


    // Adds a callback function that will be invoked when the DOM is loaded (which
    // occurs *before* window.onload, which has to wait for images and such to load
    // first.  This simply observes the dom:loaded event on the document object (support for
    // which is provided by Prototype).
    onDOMLoaded : function(callback)
    {
        document.observe("dom:loaded", callback);
    },

    /** Find all elements marked with the "t-invisible" CSS class and hide()s them, so that
     * Prototype's visible() method operates correctly. In addition,
     * finds form control elements and adds additional listeners to them to support
     * form field input validation.
     *
     * <p>This is invoked when the
     * DOM is first loaded, and AGAIN whenever dynamic content is loaded via the Zone
     * mechanism.
     */
    onDomLoadedCallback : function()
    {
        // Turn off click & submit protection inside Tapestry.waitForPage().

        Tapestry.pageLoaded = true;

        Tapestry.ScriptManager.initialize();

        $$(".t-invisible").each(function(element)
        {
            element.hide();
            element.removeClassName("t-invisible");
        });

        // Adds a focus observer that fades all error popups except for the
        // field in question.

        $$("INPUT", "SELECT", "TEXTAREA").each(function(element)
        {
            // Due to Ajax, we may execute the callback multiple times,
            // and we don't want to add multiple listeners to the same
            // element.

            var t = $T(element);

            if (! t.observingFocusChange)
            {
                element.observe("focus", function()
                {
                    if (element != Tapestry.currentFocusField)
                    {
                        document.fire(Tapestry.FOCUS_CHANGE_EVENT, element);

                        Tapestry.currentFocusField = element;
                    }
                });

                t.observingFocusChange = true;
            }
        });

        // When a submit element is clicked, record the name of the element
        // on the associated form. This is necessary for some Ajax processing,
        // see TAPESTRY-2324.

        $$("INPUT[type=submit]").each(function(element)
        {
            var t = $T(element);

            if (!t.trackingClicks)
            {
                element.observe("click", function()
                {
                    $T(element.form).lastSubmit = element;
                });

                t.trackingClicks = true;
            }
        });
    },

    /* Generalized initialize function for Tapestry, used to help minimize the amount of JavaScript
     * for the page by removing redundancies such as repeated Object and method names. The spec
     * is a hash whose keys are the names of methods of the Tapestry.Initializer object.
     * The value is an array of arrays.  The outer arrays represent invocations
     * of the method.  The inner array are the parameters for each invocation.
     * As an optimization, the inner value may not be an array but instead
     * a single value.
     */
    init : function(spec)
    {
        $H(spec).each(function(pair)
        {
            var functionName = pair.key;

            var initf = Tapestry.Initializer[functionName];

            if (initf == undefined)
            {
                Tapestry.error(Tapestry.Messages.missingInitializer, {
                    name:functionName
                });
                return;
            }

            pair.value.each(function(parameterList)
            {
                if (! Object.isArray(parameterList))
                {
                    parameterList = [
                        parameterList
                    ];
                }

                initf.apply(this, parameterList);
            });
        });
    },

    /** Formats and displays an error message on the console. */
    error : function (message, substitutions)
    {
        Tapestry.invokeLogger(message, substitutions, Tapestry.Logging.error);
    },

    /** Formats and displays a warning on the console. */
    warn : function (message, substitutions)
    {
        Tapestry.invokeLogger(message, substitutions, Tapestry.Logging.warn);
    },

    /** Formats and displays a debug message on the console. */
    debug : function (message, substitutions)
    {
        Tapestry.invokeLogger(message, substitutions, Tapestry.Logging.debug);
    },

    invokeLogger : function(message, substitutions, loggingFunction)
    {
        if (substitutions != undefined)
            message = message.interpolate(substitutions);

        loggingFunction.call(this, message);
    },

    /**
     * Passed the JSON content of a Tapestry partial markup response, extracts
     * the script and stylesheet information.  JavaScript libraries and stylesheets are loaded,
     * then the callback is invoked.  All three keys are optional:
     * <dl>
     * <dt>redirectURL</dt> <dd>URL to redirect to (in which case, the callback is not invoked)</dd>
     * <dt>scripts</dt><dd>Array of strings (URIs of scripts)</dd>
     * <dt>stylesheets</dt><dd>Array of hashes, each hash has key href and optional key media</dd>
     *
     * @param reply JSON response object from the server
     * @param callback function invoked after the scripts have all loaded (presumably, to update the DOM)
     */
    loadScriptsInReply : function(reply, callback)
    {
        var redirectURL = reply.redirectURL;

        if (redirectURL)
        {
            // Check for complete URL.
            if (/^https?:/.test(redirectURL))
            {
                window.location = redirectURL;
                return;
            }

            window.location.pathname = redirectURL;

            // Don't bother loading scripts or invoking the callback.

            return;
        }

        Tapestry.ScriptManager.addStylesheets(reply.stylesheets);

        Tapestry.ScriptManager.addScripts(reply.scripts,
                function()
                {
                    callback.call(this);

                    // After the callback updates the DOM
                    // (presumably), continue on with
                    // evaluating the reply.script
                    // and other final steps.

                    if (reply.script) eval(reply.script);

                    Tapestry.onDomLoadedCallback();

                });
    },

    /**
     * Default function for handling Ajax-related failures.
     */
    ajaxFailureHandler : function(response)
    {
        var message = response.getHeader("X-Tapestry-ErrorMessage");

        Tapestry.error(Tapestry.Messages.communicationFailed + message);

        Tapestry.debug(Tapestry.Messages.ajaxFailure + message, response);
    },

    /**
     * Processes a typical Ajax request for a URL invoking the provided handler on success.
     * On failure, error() is invoked to inform the user.
     *
     * @param url of Ajax request
     * @param successHandler to invoke on success
     * @return the Ajax.Request object
     */
    ajaxRequest : function(url, successHandler)
    {
        return new Ajax.Request(url, {
            onSuccess: function(response, jsonResponse)
            {
                // When the page is unloaded, pending Ajax requests appear to terminate
                // as succesful (but with no reply value). Since we're trying to navigate
                // to a new page anyway, we just ignore those false success callbacks.
                // We have a listener for the window's "beforeunload" event that sets
                // this flag.

                if (Tapestry.windowUnloaded)
                    return;

                if (! response.request.success())
                {
                    Tapestry.error(Tapestry.Messages.ajaxRequestUnsuccessful);
                    return;
                }

                try
                {
                    // Re-invoke the success handler, capturing any exceptions.
                    successHandler.call(this, response, jsonResponse);
                }
                catch (e)
                {
                    Tapestry.error(Tapestry.Messages.clientException + e);
                }
            },
            onException: Tapestry.ajaxFailureHandler,
            onFailure: Tapestry.ajaxFailureHandler
        });
    },

    /** Obtains the Tapestry.ZoneManager object associated with a triggering element
     * (an <a> or <form>) configured to update a zone. Writes errors to the AjaxConsole
     * if the zone and ZoneManager can not be resolved.
     *
     * @param element   triggering element (id or instance)
     * @return Tapestry.ZoneManager instance for updated zone, or null if not found.
     */
    findZoneManager : function(element)
    {
        var zoneId = $T(element).zoneId;

        return Tapestry.findZoneManagerForZone(zoneId);
    },

    /**
     * Obtains the Tapestry.ZoneManager object associated with a zone element (usually
     * a <div>). Writes errors to the Ajax console if the element or manager
     * can not be resolved.
     * @param zoneElement  zone element (id or instance)
     * @return Tapestry.ZoneManager instance for zone, or null if not found
     */
    findZoneManagerForZone : function(zoneElement)
    {
        var element = $(zoneElement);

        if (!zoneElement)
        {
            Tapestry.error(Tapestry.Messages.missingZone, {
                id:zoneElement
            });
            return null;
        }

        var manager = $T(zoneElement).zoneManager;

        if (!manager)
        {
            Tapestry.error(Tapestry.Messages.noZoneManager, element);
            return null;
        }

        return manager;
    },

    /**
     * Used to reconstruct a complete URL from a path that is (or may be) relative to window.location.
     * This is used when determining if a JavaScript library or CSS stylesheet has already been loaded.
     * Recognizes complete URLs (which are returned unchanged), otherwise the URLs are expected to be
     * absolute paths.
     *
     * @param path
     * @return complete URL as string
     */
    rebuildURL : function(path)
    {
        if (path.match(/^https?:/))
        {
            return path;
        }

        if (! path.startsWith("/"))
        {
            Tapestry.error(Tapestry.Messages.pathDoesNotStartWithSlash, {
                path: path
            });

            return path;
        }

        var l = window.location;
        return l.protocol + "//" + l.host + path;
    },

    stripToLastSlash : function(URL)
    {
        var slashx = URL.lastIndexOf("/");

        return URL.substring(0, slashx + 1);
    },

    /**
     * Convert a user-provided localized number to an ordinary number (not a string).
     * Removes seperators and leading/trailing whitespace. Disallows the decimal point if isInteger is true.
     * @param number string provided by user
     * @param isInteger if true, disallow decimal point
     */
    formatLocalizedNumber : function(number, isInteger)
    {
        // We convert from localized string to a canonical string,
        // stripping out  group seperators (normally commas). If isInteger is
        // true, we don't allow a decimal point.

        var minus = Tapestry.decimalFormatSymbols.minusSign;
        var grouping = Tapestry.decimalFormatSymbols.groupingSeparator;
        var decimal = Tapestry.decimalFormatSymbols.decimalSeparator;

        var canonical = "";

        number.strip().toArray().each(function(ch)
        {
            if (ch == minus)
            {
                canonical += "-";
                return;
            }

            if (ch == grouping)
            {
                return;
            }

            if (ch == decimal)
            {
                if (isInteger) throw Tapestry.Messages.notAnInteger;

                ch = ".";
            }
            else if (ch < "0" || ch > "9") throw Tapestry.Messages.invalidCharacter;

            canonical += ch;
        });

        return Number(canonical);
    },

    /**
     * Marks a number of script libraries as loaded; this is used with virtual scripts (which combine multiple
     * actual scripts). This is necessary so that subsequent Ajax requests do not load scripts that have
     * already been loaded
     * @param scripts     array of script paths
     */
    markScriptLibrariesLoaded : function(scripts)
    {
        $(scripts).each(function (script)
        {
            var complete = Tapestry.rebuildURL(script);
            Tapestry.ScriptManager.virtualScripts.push(complete);
        });
    }
};


Element.addMethods(
{

    /**
     * Works upward from the element, checking to see if the element is visible. Returns false
     * if it finds an invisible container. Returns true if it makes it as far as a (visible) FORM element.
     *
     * Note that this only applies to the CSS definition of visible; it doesn't check that the element
     * is scolled into view.
     *
     * @param element to search up from
     * @return true if visible (and containers visible), false if it or container are not visible
     */
    isDeepVisible : function(element)
    {
        var current = $(element);

        while (true)
        {
            if (! current.visible()) return false;

            if (current.tagName == "FORM") break;

            current = $(current.parentNode)
        }

        return true;
    }
});

Element.addMethods('FORM',
{
    /**
     * Gets or creates the Tapestry.FormEventManager for the form.
     *
     * @param form form element
     */
    getFormEventManager : function(form)
    {
        form = $(form);
        var t = $T(form);

        var manager = t.formEventManager;

        if (manager == undefined)
        {
            manager = new Tapestry.FormEventManager(form);
            t.formEventManager = manager;
        }

        return manager;
    },

    /**
     * Sends an Ajax request to the Form's action. This encapsulates
     * a few things, such as a default onFailure handler, and working
     * around bugs/features in Prototype concerning how
     * submit buttons are processed.
     *
     * @param form used to define the data to be sent in the request
     * @param options      standard Prototype Ajax Options
     * @return Ajax.Request the Ajax.Request created for the request
     */
    sendAjaxRequest : function (form, url, options)
    {
        form = $(form);

        // Generally, options should not be null or missing,
        // because otherwise there's no way to provide any callbacks!

        options = Object.clone(options || { });

        // Set a default failure handler if none is provided.

        options.onFailure |= Tapestry.ajaxFailureHandler;

        // Find the elements, skipping over any submit buttons.
        // This works around bugs in Prototype 1.6.0.2.

        var elements = form.getElements().reject(function(e)
        {
            return e.tagName == "INPUT" && e.type == "submit";
        });

        var hash = Form.serializeElements(elements, true);

        var lastSubmit = $T(form).lastSubmit;

        // Put the last submit clicked into the hash, emulating
        // what a normal form submit would do.

        if (lastSubmit && lastSubmit.name)
        {
            hash[lastSubmit.name] = $F(lastSubmit);
        }


        // Copy the parameters in, overwriting field values,
        // because Prototype 1.6.0.2 does not.

        Object.extend(hash, options.parameters);

        options.parameters = hash;

        // Ajax.Request will convert the hash into a query string and post it.

        return new Ajax.Request(url, options);
    }
});

Element.addMethods([
    'INPUT',
    'SELECT',
    'TEXTAREA'
],
{
    /**
     * Invoked on a form element (INPUT, SELECT, etc.), gets or creates the
     * Tapestry.FieldEventManager for that field.
     *
     * @param field field element
     */
    getFieldEventManager : function(field)
    {
        field = $(field);
        var t = $T(field);

        var manager = t.fieldEventManager;

        if (manager == undefined)
        {
            manager = new Tapestry.FieldEventManager(field);
            t.fieldEventManager = manager;
        }

        return manager;
    },

    /**
     * Obtains the Tapestry.FieldEventManager and asks it to show
     * the validation message.   Sets the  validationError property of the elements tapestry object to true.
     * @param element
     * @param message to display
     */
    showValidationMessage : function(element, message)
    {
        element = $(element);

        element.getFieldEventManager().showValidationMessage(message);

        return element;
    },

    /**
     * Removes any validation decorations on the field, and
     * hides the error popup (if any) for the field.
     */
    removeDecorations : function(element)
    {
        $(element).getFieldEventManager().removeDecorations();

        return element;
    },


    /**
     * Adds a standard validator for the element, an observer of
     * Tapestry.FIELD_VALIDATE_EVENT. The validator function will be
     * passed the current field value and should throw an error message if
     * the field's value is not valid.
     * @param element field element to validate
     * @param validator function to be passed the field value
     */
    addValidator : function(element, validator)
    {
        element.observe(Tapestry.FIELD_VALIDATE_EVENT, function(event)
        {
            try
            {
                validator.call(this, event.memo.translated);
            }
            catch (message)
            {
                element.showValidationMessage(message);
            }
        });

        return element;
    }
});

/** Container of functions that may be invoked by the Tapestry.init() function. */
Tapestry.Initializer = {

    ajaxFormLoop : function(spec)
    {
        var rowInjector = $(spec.rowInjector);

        $(spec.addRowTriggers).each(function(triggerId)
        {
            $(triggerId).observe("click", function(event)
            {
                $(rowInjector).trigger();

                Event.stop(event);
            })
        });
    },

    formLoopRemoveLink : function(spec)
    {
        var link = $(spec.link);
        var fragmentId = spec.fragment;

        link.observe("click", function(event)
        {
            Event.stop(event);

            var successHandler = function(transport)
            {
                var container = $(fragmentId);
                var fragment = $T(container).formFragment;

                if (fragment != undefined)
                {
                    fragment.hideAndRemove();
                }
                else
                {
                    var effect = Tapestry.ElementEffect.fade(container);

                    effect.options.afterFinish = function()
                    {
                        container.remove();
                    };
                }
            }

            Tapestry.ajaxRequest(spec.url, successHandler);
        });
    },


    /**
     * Convert a form or link into a trigger of an Ajax update that
     * updates the indicated Zone.
     * @param element id or instance of <form> or <a> element
     * @param zoneId id of the element to update when link clicked or form submitted
     * @param url absolute component event request URL
     */
    linkZone : function(element, zoneId, url)
    {
        element = $(element);

        // Update the element with the id of zone div. This may be changed dynamically on the client
        // side.

        $T(element).zoneId = zoneId;

        if (element.tagName == "FORM")
        {
            // Turn normal form submission off.

            element.getFormEventManager().preventSubmission = true;

            // After the form is validated and prepared, this code will
            // process the form submission via an Ajax call.  The original submit event
            // will have been cancelled.

            element.observe(Tapestry.FORM_PROCESS_SUBMIT_EVENT, function()
            {
                var zoneManager = Tapestry.findZoneManager(element);

                if (!zoneManager) return;

                var successHandler = function(transport)
                {
                    zoneManager.processReply(transport.responseJSON);
                };

                element.sendAjaxRequest(url, {
                    onSuccess : successHandler
                });
            });

            return;
        }

        // Otherwise, assume it's just an ordinary link.

        element.observe("click", function(event)
        {
            Event.stop(event);

            var zoneObject = Tapestry.findZoneManager(element);

            if (!zoneObject) return;

            zoneObject.updateFromURL(url);
        });
    },

    validate : function (field, specs)
    {
        field = $(field);

        // Force the creation of the form and field event managers.

        $(field.form).getFormEventManager();
        $(field).getFieldEventManager();

        specs.each(function(spec)
        {
            // spec is a 2 or 3 element array.
            // validator function name, message, optional constraint

            var name = spec[0];
            var message = spec[1];
            var constraint = spec[2];

            var vfunc = Tapestry.Validator[name];

            if (vfunc == undefined)
            {
                Tapestry.error(Tapestry.Messages.missingValidator, {
                    name:name,
                    fieldName:field.id
                });
                return;
            }

            // Pass the extend field, the provided message, and the constraint object
            // to the Tapestry.Validator function, so that it can, typically, invoke
            // field.addValidator().

            vfunc.call(this, field, message, constraint);
        });
    },

    zone : function(spec)
    {
        new Tapestry.ZoneManager(spec);
    },

    formFragment : function(spec)
    {
        new Tapestry.FormFragment(spec)
    },

    formInjector : function(spec)
    {
        new Tapestry.FormInjector(spec);
    },

    // Links a FormFragment to a trigger (a radio or a checkbox), such that changing the trigger will hide
    // or show the FormFragment. Care should be taken to render the page with the
    // checkbox and the FormFragment('s visibility) in agreement.

    linkTriggerToFormFragment : function(trigger, element)
    {
        trigger = $(trigger);

        if (trigger.type == "radio")
        {
            $(trigger.form).observe("click", function()
            {
                $T(element).formFragment.setVisible(trigger.checked);
            });

            return;
        }

        // Otherwise, we assume it is a checkbox.  The difference is
        // that we can observe just the single checkbox element,
        // rather than handling clicks anywhere in the form (as with
        // the radio).

        trigger.observe("click", function()
        {
            $T(element).formFragment.setVisible(trigger.checked);
        });

    }
};

// Collection of field based functions related to validation. Each
// function takes a field, a message and an optional constraint value.
// Some functions are related to Translators and work on the format event,
// other's are from Validators and work on the validate event.

Tapestry.Validator = {

    required : function(field, message)
    {
        $(field).getFieldEventManager().requiredCheck = function(value)
        {
            if (value.strip() == '')
                $(field).showValidationMessage(message);
        };
    },

    /** Supplies a client-side numeric translator for the field. */
    numericformat : function (field, message, isInteger)
    {
        $(field).getFieldEventManager().translator = function(input)
        {
            try
            {
                return Tapestry.formatLocalizedNumber(input, isInteger);
            }
            catch (e)
            {
                $(field).showValidationMessage(message);
            }
        };
    },

    minlength : function(field, message, length)
    {
        field.addValidator(function(value)
        {
            if (value.length < length) throw message;
        });
    },

    maxlength : function(field, message, maxlength)
    {
        field.addValidator(function(value)
        {
            if (value.length > maxlength) throw message;
        });
    },

    min : function(field, message, minValue)
    {
        field.addValidator(function(value)
        {
            if (value < minValue) throw message;
        });
    },

    max : function(field, message, maxValue)
    {
        field.addValidator(function(value)
        {
            if (value > maxValue) throw message;
        });
    },

    regexp : function(field, message, pattern)
    {
        var regexp = new RegExp(pattern);

        field.addValidator(function(value)
        {
            if (! regexp.test(value)) throw message;
        });
    }
};

Tapestry.ErrorPopup = Class.create({

    // If the images associated with the error popup are overridden (by overriding Tapestry's default.css stylesheet),
    // then some of these values may also need to be adjusted.

    BUBBLE_VERT_OFFSET : -34,

    BUBBLE_HORIZONTAL_OFFSET : -20,

    BUBBLE_WIDTH: "auto",

    BUBBLE_HEIGHT: "39px",

    initialize : function(field)
    {
        this.field = $(field);

        this.innerSpan = new Element("span");
        this.outerDiv = $(new Element("div", {
            'id' : this.field.id + ":errorpopup",
            'class' : 't-error-popup'
        })).update(this.innerSpan).hide();

        var body = $(document.body);

        body.insert({
            bottom: this.outerDiv
        });

        this.outerDiv.absolutize();

        this.outerDiv.observe("click", function(event)
        {
            this.ignoreNextFocus = true;

            this.stopAnimation();

            this.outerDiv.hide();

            this.field.activate();

            Event.stop(event);  // Should be domevent.stop(), but that fails under IE
        }.bindAsEventListener(this));

        this.queue = {
            position: 'end',
            scope: this.field.id
        };

        Event.observe(window, "resize", this.repositionBubble.bind(this));

        document.observe(Tapestry.FOCUS_CHANGE_EVENT, function(event)
        {
            if (this.ignoreNextFocus)
            {
                this.ignoreNextFocus = false;
                return;
            }

            if (event.memo == this.field)
            {
                this.fadeIn();
                return;
            }

            // If this field is not the focus field after a focus change, then it's bubble,
            // if visible, should fade out. This covers tabbing from one form to another. 
            this.fadeOut();

        }.bind(this));
    },

    showMessage : function(message)
    {
        this.stopAnimation();

        this.innerSpan.update(message);

        this.hasMessage = true;

        this.fadeIn();
    },

    repositionBubble : function()
    {
        var fieldPos = this.field.cumulativeOffset();

        this.outerDiv.setStyle({
            top: (fieldPos[1] + this.BUBBLE_VERT_OFFSET) + "px",
            left: (fieldPos[0] + this.BUBBLE_HORIZONTAL_OFFSET) + "px",
            width: this.BUBBLE_WIDTH,
            height: this.BUBBLE_HEIGHT
        });
    },

    fadeIn : function()
    {
        if (! this.hasMessage) return;

        this.repositionBubble();

        if (this.animation) return;

        this.animation = new Effect.Appear(this.outerDiv, {
            queue: this.queue,
            afterFinish: function()
            {
                this.animation = null;

                if (this.field != Tapestry.currentFocusField)
                    this.fadeOut();
            }.bind(this)
        });
    },

    stopAnimation : function()
    {
        if (this.animation) this.animation.cancel();

        this.animation = null;
    },

    fadeOut : function ()
    {
        if (this.animation) return;

        this.animation = new Effect.Fade(this.outerDiv, {
            queue : this.queue,
            afterFinish: function()
            {
                this.animation = null;
            }.bind(this)
        });
    },

    hide : function()
    {
        this.hasMessage = false;

        this.stopAnimation();

        this.outerDiv.hide();
    }
});

Tapestry.FormEventManager = Class.create({

    initialize : function(form)
    {
        this.form = $(form);

        this.form.onsubmit = this.handleSubmit.bindAsEventListener(this);
    },

    handleSubmit : function(domevent)
    {
        var t = $T(this.form);

        t.validationError = false;

        var firstErrorField = null;

        // Locate elements that have an event manager (and therefore, validations)
        // and let those validations execute, which may result in calls to recordError().


        this.form.getElements().each(function(element)
        {
            var fem = $T(element).fieldEventManager;

            if (fem != undefined)
            {
                // Ask the FEM to validate input for the field, which fires
                // a number of events.
                var error = fem.validateInput();

                if (error && ! firstErrorField)
                {
                    firstErrorField = element;
                }
            }
        });

        // Allow observers to validate the form as a whole.  The FormEvent will be visible
        // as event.memo.  The Form will not be submitted if event.result is set to false (it defaults
        // to true).  Still trying to figure out what should get focus from this
        // kind of event.

        this.form.fire(Tapestry.FORM_VALIDATE_EVENT, this.form);

        if (t.validationError)
        {
            Event.stop(domevent); // Should be domevent.stop(), but that fails under IE

            if (firstErrorField) firstErrorField.activate();

            // Because the submission failed, the last submit property is cleared,
            // since the form may be submitted for some other reason later.

            t.lastSubmit = null;

            return false;
        }

        this.form.fire(Tapestry.FORM_PREPARE_FOR_SUBMIT_EVENT, this.form);

        // This flag can be set to prevent the form from submitting normally.
        // This is used for some Ajax cases where the form submission must
        // run via Ajax.Request.

        if (this.preventSubmission)
        {
            // Prevent the normal submission.

            Event.stop(domevent);

            // Instead ...

            this.form.fire(Tapestry.FORM_PROCESS_SUBMIT_EVENT);

            return false;
        }

        // Validation is OK, not doing Ajax, continue as planned.

        return true;
    }
});

Tapestry.FieldEventManager = Class.create({

    initialize : function(field)
    {
        this.field = $(field);

        var id = this.field.id;
        this.label = $(id + '-label');
        this.icon = $(id + '-icon');

        this.translator = Prototype.K;

        document.observe(Tapestry.FOCUS_CHANGE_EVENT, function(event)
        {
            // If changing focus *within the same form* then
            // perform validation.  Note that Tapestry.currentFocusField does not change
            // until after the FOCUS_CHANGE_EVENT notification.

            if (Tapestry.currentFocusField == this.field &&
                this.field.form == event.memo.form)
                this.validateInput();

        }.bindAsEventListener(this));
    },


    /** Removes validation decorations if present. Hides the ErrorPopup,
     *  if it exists.
     */
    removeDecorations : function()
    {
        this.field.removeClassName("t-error");

        if (this.label)
            this.label.removeClassName("t-error");

        if (this.icon)
            this.icon.hide();

        if (this.errorPopup)
            this.errorPopup.hide();
    },


    /**
     * Show a validation error message, which will add decorations to the
     * field and it label, make the icon visible, and raise the
     * field's Tapestry.ErrorPopup to show the message.
     * @param message validation message to display
     */
    showValidationMessage : function(message)
    {
        $T(this.field).validationError = true;
        $T(this.field.form).validationError = true;

        this.field.addClassName("t-error");

        if (this.label)
            this.label.addClassName("t-error");

        if (this.icon)
        {
            if (! this.icon.visible())
                new Effect.Appear(this.icon);
        }

        if (this.errorPopup == undefined)
            this.errorPopup = new Tapestry.ErrorPopup(this.field);

        this.errorPopup.showMessage(message);
    },

    /**
     * Invoked when a form is submitted, or when leaving a field, to perform
     * field validations. Field validations are skipped for disabled fields.
     * If all validations are succesful, any decorations are removed. If any validation
     * fails, an error popup is raised for the field, to display the validation
     * error message.
     *
     * @return true if the field has a validation error
     */
    validateInput : function()
    {
        if (this.field.disabled) return false;

        if (! this.field.isDeepVisible()) return false;

        var t = $T(this.field);

        var value = $F(this.field);

        t.validationError = false;

        if (this.requiredCheck)
            this.requiredCheck.call(this, value);

        // Don't try to validate blank values; if the field is required, that error is already
        // noted and presented to the user.

        if (!t.validationError && ! value.blank())
        {
            var translated = this.translator(value);

            // If Format went ok, perhaps do the other validations.

            if (! t.validationError)
            {
                this.field.fire(Tapestry.FIELD_VALIDATE_EVENT, {
                    value: value,
                    translated: translated
                });
            }
        }

        // Lastly, if no validation errors were found, remove the decorations.

        if (! t.validationError)
            this.field.removeDecorations();

        return t.validationError;
    }
});

// Wrappers around Prototype and Scriptaculous effects.
// All the functions of this object should have all-lowercase names.
// The methods all return the Effect object they create.

Tapestry.ElementEffect = {

    /** Fades in the element. */
    show : function(element)
    {
        return new Effect.Appear(element);
    },

    /** The classic yellow background fade. */
    highlight : function(element)
    {
        return new Effect.Highlight(element);
    },

    /** Scrolls the content down. */
    slidedown : function (element)
    {
        return new Effect.SlideDown(element);
    },

    /** Slids the content back up (opposite of slidedown). */
    slideup : function(element)
    {
        return new Effect.SlideUp(element);
    },

    /** Fades the content out (opposite of show). */
    fade : function(element)
    {
        return new Effect.Fade(element);
    }
};


/**
 * Manages a &lt;div&lt; (or other element) for dynamic updates.
 *
 */
Tapestry.ZoneManager = Class.create({
    // spec are the parameters for the Zone:
    // trigger: required -- name or instance of link.
    // element: required -- name or instance of div element to be shown, hidden and updated
    // show: name of Tapestry.ElementEffect function used to reveal the zone if hidden
    // update: name of Tapestry.ElementEffect function used to highlight the zone after it is updated
    initialize: function(spec)
    {
        if (Object.isString(spec))
            spec = {
                element: spec
            }

        this.element = $(spec.element);
        this.showFunc = Tapestry.ElementEffect[spec.show] || Tapestry.ElementEffect.show;
        this.updateFunc = Tapestry.ElementEffect[spec.update] || Tapestry.ElementEffect.highlight;

        // Link the div back to this zone.

        $T(this.element).zoneManager = this;

        // Look inside the managed element for another element with the CSS class "t-zone-update".
        // If present, then this is the element whose content will be changed, rather
        // then the entire zone's element.  This allows a Zone element to contain "wrapper" markup
        // (borders and such).  Typically, such a Zone element will initially be invisible.
        // The show and update functions apply to the Zone element, not the update element.

        var updates = this.element.select(".t-zone-update");

        this.updateElement = updates.first() || this.element;
    },

    // Updates the content of the div controlled by this Zone, then
    // invokes the show function (if not visible) or the update function (if visible),

    /**
     * Updates the zone's content, and invokes either the update function (to highlight the change)
     * or the show function (to reveal a hidden element). Lastly, fires the Tapestry.ZONE_UPDATED_EVENT
     * to let listeners know that the zone was updated.
     * @param content
     */
    show: function(content)
    {
        this.updateElement.update(content);

        var func = this.element.visible() ? this.updateFunc : this.showFunc;

        func.call(this, this.element);

        this.element.fire(Tapestry.ZONE_UPDATED_EVENT);
    },

    /**
     * Invoked with a reply (i.e., transport.responseJSON), this updates the managed element
     * and processes any JavaScript in the reply.  The response should have a
     * content key, and may have  script, scripts and stylesheets keys.
     * @param reply response in JSON format appropriate to a Tapestry.Zone
     */
    processReply : function(reply)
    {
        Tapestry.loadScriptsInReply(reply, function()
        {
            // In a multi-zone update, the reply.content may be blank or missing.

            reply.content && this.show(reply.content);

            // zones is an object of zone ids and zone content that will be present
            // in a multi-zone update response.

            Object.keys(reply.zones).each(function (zoneId)
            {
                var manager = Tapestry.findZoneManagerForZone(zoneId);

                if (manager)
                {
                    var zoneContent = reply.zones[zoneId];
                    manager.show(zoneContent);
                }
            });
        }.bind(this));
    },

    /** Initiates an Ajax request to update this zone by sending a request
     *  to the URL. Expects the correct JSON reply (wth keys content, etc.).
     * @param URL component event request URL
     */
    updateFromURL : function (URL)
    {
        var successHandler = function(transport)
        {
            this.processReply(transport.responseJSON);
        }.bind(this);

        Tapestry.ajaxRequest(URL, successHandler);
    }
});

// A class that managed an element (usually a <div>) that is conditionally visible and
// part of the form when visible.

Tapestry.FormFragment = Class.create({

    initialize: function(spec)
    {
        if (Object.isString(spec))
            spec = {
                element: spec
            };

        this.element = $(spec.element);

        $T(this.element).formFragment = this;

        this.hidden = $(spec.element + ":hidden");

        this.showFunc = Tapestry.ElementEffect[spec.show] || Tapestry.ElementEffect.slidedown;
        this.hideFunc = Tapestry.ElementEffect[spec.hide] || Tapestry.ElementEffect.slideup;

        var form = $(this.hidden.form);

        // TAP5-283: Force creation of the FormEventManager if it does not already exist.

        form.getFormEventManager();

        $(form).observe(Tapestry.FORM_PREPARE_FOR_SUBMIT_EVENT, function()
        {
            // On a submission, if the fragment is not visible, then wipe out its
            // form submission data, so that no processing or validation occurs on the server.

            if (! this.element.isDeepVisible())
                this.hidden.value = "";
        }.bind(this));
    },

    hide : function()
    {
        if (this.element.visible())
            this.hideFunc(this.element);
    },

    hideAndRemove : function()
    {
        var effect = this.hideFunc(this.element);

        effect.options.afterFinish = function()
        {
            this.element.remove();
        }.bind(this);
    },

    show : function()
    {
        if (! this.element.visible())
            this.showFunc(this.element);
    },

    toggle : function()
    {
        this.setVisible(! this.element.visible());
    },

    setVisible : function(visible)
    {
        if (visible)
        {
            this.show();
            return;
        }

        this.hide();
    }
});

Tapestry.FormInjector = Class.create({

    initialize: function(spec)
    {
        this.element = $(spec.element);
        this.url = spec.url;
        this.below = spec.below;

        this.showFunc = Tapestry.ElementEffect[spec.show] || Tapestry.ElementEffect.highlight;

        this.element.trigger = function()
        {
            var successHandler = function(transport)
            {
                var reply = transport.responseJSON;

                // Clone the FormInjector element (usually a div)
                // to create the new element, that gets inserted
                // before or after the FormInjector's element.

                var newElement = new Element(this.element.tagName, {
                    'class' : this.element.className
                });

                // Insert the new element before or after the existing element.

                var param = { };
                param[this.below ? "after" : "before"] = newElement;

                Tapestry.loadScriptsInReply(reply, function()
                {
                    // Add the new element with the downloaded content.

                    this.element.insert(param);

                    // Update the empty element with the content from the server

                    newElement.update(reply.content);

                    newElement.id = reply.elementId;

                    // Add some animation to reveal it all.

                    this.showFunc(newElement);
                }.bind(this));
            }.bind(this);

            Tapestry.ajaxRequest(this.url, successHandler);

            return false;
        }.bind(this);
    }
});

/**
 * Wait for a set of JavaScript libraries to load (in terms of DOM script elements), then invokes a callback function.
 */
Tapestry.ScriptLoadMonitor = Class.create({

    initialize : function(scriptElements, callback)
    {
        this.callback = callback;
        this.loaded = 0;
        this.toload = scriptElements.length;

        var executor = this;

        scriptElements.each(function (scriptElement)
        {
            if (Prototype.Browser.IE)
            {
                var loaded = false;

                scriptElement.onreadystatechange = function ()
                {
                    // IE may fire either loaded or complete, or perhaps even both.
                    if (! loaded && (this.readyState == 'loaded' || this.readyState == 'complete'))
                    {
                        loaded = true;
                        executor.loadComplete(scriptElement);
                    }
                };
            }
            else
            {
                // Much simpler in FF, Safari, etc.
                scriptElement.onload = executor.loadComplete.bindAsEventListener(executor, scriptElement);
            }
        });

        // If no scripts to actually load, call the callback immediately.

        if (this.toload == 0) this.callback.call(this);
    },

    loadComplete : function()
    {
        this.loaded++;

        // Evaluated the dependent script only once all the elements have loaded.

        if (this.loaded == this.toload)
            this.callback.call(this);
    }
});

Tapestry.ScriptManager = {

    /** Complete URLs of virtually loaded scripts (combined scripts loaded as a single virtual asset). */
    virtualScripts : $A([]),

    initialize : function()
    {

        // Check to see if document.scripts is supported; if not (for example, FireFox),
        // we can fake it.

        this.emulated = false;

        if (! document.scripts)
        {
            this.emulated = true;

            document.scripts = new Array();

            $$('script').each(function (s)
            {
                document.scripts.push(s);
            });
        }
    },

    /**
     * Checks to see if the given collection (of <script> or <style> elements) contains the given asset URL.
     * @param collection
     * @param prop      property to check ('src' for script, 'href' to style).
     * @param assetURL        complete URL (i.e., with protocol, host and port) to the asset
     */
    contains : function (collection, prop, assetURL)
    {
        return $A(collection).any(function (element)
        {
            var existing = element[prop];

            if (! existing || existing.blank()) return false;

            var complete =
                    Prototype.Browser.IE ? Tapestry.rebuildURL(existing) : existing;

            return complete == assetURL;
        });

        return false;
    },

    /**
     * Add scripts, as needed, to the document, then waits for them all to load, and finally, calls
     * the callback function.
     * @param scripts        Array of scripts to load
     * @param callback invoked after scripts are loaded
     */
    addScripts: function(scripts, callback)
    {
        var added = new Array();

        if (scripts)
        {
            var emulated = this.emulated;
            // Looks like IE really needs the new <script> tag to be
            // in the <head>. FF doesn't seem to care.
            // See http://unixpapa.com/js/dyna.html
            var head = $$("head").first();

            scripts.each(function(s)
            {
                var assetURL = Tapestry.rebuildURL(s);

                // Check to see if the script is already loaded, either as a virtual script, or as
                // an individual <script src=""> element.

                if (Tapestry.ScriptManager.virtualScripts.member(assetURL)) return;
                if (Tapestry.ScriptManager.contains(document.scripts, "src", assetURL)) return;

                // IE needs the type="text/javascript" as well.

                var element = new Element('script', {
                    src: assetURL,
                    type: 'text/javascript'
                });

                head.insert({
                    bottom:element
                });

                added.push(element);

                if (emulated) document.scripts.push(element);
            });

        }

        new Tapestry.ScriptLoadMonitor(added, callback);
    },

    addStylesheets : function(stylesheets)
    {
        if (!stylesheets) return;

        var head = $$('head').first();

        $(stylesheets).each(function(s)
        {
            var assetURL = Tapestry.rebuildURL(s.href);

            if (Tapestry.ScriptManager.contains(document.styleSheets, 'href', assetURL)) return; // continue

            var element = new Element('link', {
                type: 'text/css',
                rel: 'stylesheet',
                href: assetURL
            });

            // Careful about media types, some browser will break if it ends up as 'null'.

            if (s.media != undefined)
                element.writeAttribute('media', s.media);

            head.insert({
                bottom: element
            });

        });
    }
};

/**
 * In the spirit of $(), $T() exists to access the <em>Tapestry object</em> for the element. The Tapestry object
 * is used to store additional values related to the element; it is simply an annoymous object stored as property
 * <code>_tapestry</code> of the element, created the first time it is accessed.
 * <p>This mechanism acts as a namespace, and so helps prevent name
 * conflicts that would occur if properties were stored directly on DOM elements, and makes debugging a bit easier
 * (the Tapestry-specific properties are all in one place!).
 * For the moment, added methods are stored directly on the object, and are not prefixed in any way, valueing
 * readability over preventing naming conflicts.
 *
 * @param element an element instance or element id
 * @return object Tapestry object for the element
 */
function $T(element)
{
    var e = $(element);
    var t = e._tapestry;

    if (!t)
    {
        t = { };
        e._tapestry = t;
    }

    return t;
}

Tapestry.onDOMLoaded(Tapestry.onDomLoadedCallback);

// Ajax code needs to know to do nothing after the window is unloaded.
Event.observe(window, "beforeunload", function()
{
    Tapestry.windowUnloaded = true;
});


/* /assets/ctx/1.0-SNAPSHOT/js/blackbird.js */;

/* /assets/tapestry/5.1.0.5/tapestry-messages_de.js */;
// Copyright 2009 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

Tapestry.Messages = {

    pageIsLoading : "Bitte warten während die Seite zu Ende lädt ...",

    missingInitializer : "Die Funktion Tapestry.Initializer.#{name}() existiert nicht.",

    missingValidator :      "Die Funktion Tapestry.Validator.#{name}() existiert nicht für das Feld '#{fieldName}'.",

    ajaxFailure : "Ajax Fehler: Status #{status} für #{request.url}: ",

    ajaxRequestUnsuccessful : "Die Serveranfrage schlug fehl. Es gibt womöglich ein Problem beim Zugriff auf den Server.",

    clientException :     "Client exception beim Verarbeiten der Antwort: ",

    missingZone :   "Ajax Zone '#{id}' konnte für ein dynamisches Update nicht gefunden werden.",

    noZoneManager :   "Ajax Zone '#{id}' ist nicht mit einem Tapestry.ZoneManager Objekt verknüpft." ,

    pathDoesNotStartWithSlash : "Der externe Pfad #{path} beginnt nicht mit einem führenden '/'.",

    notAnInteger : "Kein ganzzahliger Wert",

    invalidCharacter : "Ungültiges Zeichen",

    communicationFailed : "Kommunikation mit dem Server ist fehlgeschlagen: "
};

/* /assets/ctx/1.0-SNAPSHOT/js/preload.js */;
var preloadLoadAutoHook	= false;		

// preload default options
var preloadLoadDefaultOptions = {
	
	treshold		: 0,							// Offset from bottom to start preloading
	extensions		: ['gif','png','jpg','jpeg'],	// Array of extensions to lazyLoad
	
	replaceImage	: "/images/blank.gif",			// Placeholder image to show instead of the image (best leave unchanged to this blank.gif!)
	loadingImage	: "/images/spinner.gif",			// Loading indicator

	wrap			: "hcarousel-wrapper",			
	slider			: "bigSlider",				
	minWidth		: 100,							// Minimum width of an image to lazyLoad
	minHeight		: 299							// Minimum height of an image to lazyLoad
}
		
		
	 
if (!SCREENBOW) { var SCREENBOW = new Object(); }

SCREENBOW.preloadLoad 				= Class.create();
SCREENBOW.preloadLoad.prototype 		= {
	
	initialize			: function(options) {				
		// find all images and lazyLoad 'm				
		$$('.bigSlide img').each(function(image) {
			//alert(image.readAttribute("src"));
			myScrollAction = new SCREENBOW.preloadLoadImage(image, options);  
		});
	}		
	
}
		


SCREENBOW.preloadLoadImage 				= Class.create();
SCREENBOW.preloadLoadImage.prototype 	= {
	
	options				: null,			// options
	
	element				: null,			// the img element
	loading				: false,		// loading
	loaded				: false,		// loaded
	position			: null,			// element's position
	viewportHeight		: 0,			// height of the viewport
	lazyScroller		: null,			// cached bounds function - see http://www.prototypejs.org/api/event/stopObserving

	initialize			: function(image, options) {
				
		// set the options
		this.options				= Object.clone(preloadLoadDefaultOptions);
		Object.extend(this.options, options || {});
	
		// calculate position of image
		this.element				= image;
		this.position				= Position.page(this.element);
		this.pad                    = Position.page($(this.options.wrap));				
		this.viewportHeight			= document.viewport.getHeight();
		this.viewportWidth			= $(this.options.wrap).getWidth();
		// image "above the fold" already
		this.position[0] = this.position[0] - this.pad[0];
		if (this.position[0] < (this.viewportWidth)) {
						
			this.loading	= true;
			this.loaded		= true;
		
		// image not "above the fold"
		} else {
			
			// get original source element (for further reference), the filename and the extension.
			this.element.origSrc 	= this.element.src;			
			this.element.fileName 	= this.element.origSrc.substring(this.element.origSrc.lastIndexOf('/')+1,this.element.origSrc.length);
			this.element.fileType 	= this.element.fileName.substring(this.element.fileName.lastIndexOf('.')+1, this.element.fileName.length);
			
			// extension not in array; no need to lazyload
			if (this.options.extensions.indexOf(this.element.fileType) == -1) {					
				return;	
			}
			
			// image not large enough
			if ((this.element.width <= parseInt(this.options.minWidth)) && (this.element.height <= parseInt(this.options.minHeight))) {						
				return;	
			}
			
			// set blank and loading image
			this.element.src 		= this.options.replaceImage;			
			this.element.setStyle({ backgroundImage: 'url(' + this.options.loadingImage + ')', backgroundPosition: '50% 50%', backgroundRepeat: 'no-repeat' });
	
			// observe the page scroll event	
			this.lazyScroller 		= this.lazyScroll.bindAsEventListener(this);
			$(this.options.slider).observe('mousemove', this.lazyScroller.bind(this), false);						
			document.observe('mousedown', this.lazyScroller.bind(this), false);	
			document.observe('mouseup', this.lazyScroller.bind(this), false);			
			$(this.options.wrap).observe('mousewheel', this.lazyScroller.bind(this), false);						
			$(this.options.wrap).observe('DOMMouseScroll', this.lazyScroller.bind(this), false);									
			document.observe('mousemove', this.lazyScroller.bind(this), false);					
			if($('leftSliderArrow')) $('leftSliderArrow').observe('click', this.lazyScroller.bind(this), false);	
			if($('rightSliderArrow')) $('rightSliderArrow').observe('click', this.lazyScroller.bind(this), false);	
			//this.lazyScroll();
		}
	},
	
	lazyScroll			: function() {			
		// image not loaded and not loading
		if ((this.loaded == false) && (this.loading != true)) {
			// image "above the fold" ?
			pos				= Position.page(this.element);		
			pad             = Position.page($(this.options.wrap));							
			pp = pos[0] - pad[0];
			if (pp < $(this.options.wrap).getWidth()) {
				this.loading	= true;
				
				// load in the new image
				var newImage 	= null;
				newImage 		= new Image();
				newImage.src 	= this.element.origSrc;
				// image is in cache (IE6 & IE7 ... Firefox can handle the onload well even file was in cache);
				if (newImage.complete) {
						this.element.src 	= newImage.src;
						new Effect.Opacity(this.element, { from: 0, to: 1, duration: 0.5 });
						this.loaded			= true;

				// image not in cache
				} else {
					newImage.onload = function() {
						this.element.src 	= newImage.src;
						new Effect.Opacity(this.element, { from: 0, to: 1, duration: 0.5 });						
						this.loaded			= true;
					}.bind(this);
				}

				// stop the observer
				$(this.options.slider).stopObserving('mousemove', this.lazyScroller);
				document.stopObserving('mousedown', this.lazyScroller);
				document.stopObserving('mouseup', this.lazyScroller);	
				$(this.options.wrap).stopObserving('mousewheel', this.lazyScroller);						
				$(this.options.wrap).stopObserving('DOMMouseScroll', this.lazyScroller);	
				document.observe('mousemove', this.lazyScroller.bind(this), false);														
				if($('leftSliderArrow')) $('leftSliderArrow').stopObserving('click', this.lazyScroller);
				if($('rightSliderArrow')) $('rightSliderArrow').stopObserving('click', this.lazyScroller);
			}
		}
		
	}
}
		
 
if (preloadLoadAutoHook == true) {
	function initpreloadLoad() { myLL = new SCREENBOW.preloadLoad(); }
	Event.observe(document, 'dom:loaded', initpreloadLoad, false);
}
		
/* /assets/ctx/1.0-SNAPSHOT/js/slider.js */;
// Copyright (c) 2005-2009 Marty Haught, Thomas Fuchs
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

if (!Control) var Control = { };

// options:
//  axis: 'vertical', or 'horizontal' (default)
//
// callbacks:
//  onChange(value)
//  onSlide(value)
Control.Slider = Class.create({
  initialize: function(handle, track, options) {
    var slider = this;

    if (Object.isArray(handle)) {
      this.handles = handle.collect( function(e) { return $(e) });
    } else {
      this.handles = [$(handle)];
    }

    this.track   = $(track);
    this.options = options || { };

    this.axis      = this.options.axis || 'horizontal';
    this.increment = this.options.increment || 1;
    this.step      = parseInt(this.options.step || '1');
    this.range     = this.options.range || $R(0,1);

    this.value     = 0; // assure backwards compat
    this.values    = this.handles.map( function() { return 0 });
    this.spans     = this.options.spans ? this.options.spans.map(function(s){ return $(s) }) : false;
    this.options.startSpan = $(this.options.startSpan || null);
    this.options.endSpan   = $(this.options.endSpan || null);

    this.restricted = this.options.restricted || false;

    this.maximum   = this.options.maximum || this.range.end;
    this.minimum   = this.options.minimum || this.range.start;

    // Will be used to align the handle onto the track, if necessary
    this.alignX = parseInt(this.options.alignX || '0');
    this.alignY = parseInt(this.options.alignY || '0');

    this.trackLength = this.maximumOffset() - this.minimumOffset();

    this.handleLength = this.isVertical() ?
      (this.handles[0].offsetHeight != 0 ?
        this.handles[0].offsetHeight : this.handles[0].style.height.replace(/px$/,"")) :
      (this.handles[0].offsetWidth != 0 ? this.handles[0].offsetWidth :
        this.handles[0].style.width.replace(/px$/,""));

    this.active   = false;
    this.dragging = false;
    this.disabled = false;

    if (this.options.disabled) this.setDisabled();

    // Allowed values array
    this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
    if (this.allowedValues) {
      this.minimum = this.allowedValues.min();
      this.maximum = this.allowedValues.max();
    }

    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
    this.eventMouseMove = this.update.bindAsEventListener(this);

    // Initialize handles in reverse (make sure first handle is active)
    this.handles.each( function(h,i) {
      i = slider.handles.length-1-i;
      slider.setValue(parseFloat(
        (Object.isArray(slider.options.sliderValue) ?
          slider.options.sliderValue[i] : slider.options.sliderValue) ||
         slider.range.start), i);
      h.makePositioned().observe("mousedown", slider.eventMouseDown);
    });

    this.track.observe("mousedown", this.eventMouseDown);
    document.observe("mouseup", this.eventMouseUp);
    document.observe("mousemove", this.eventMouseMove);

    this.initialized = true;
  },
  dispose: function() {
    var slider = this;
    Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
    Event.stopObserving(document, "mouseup", this.eventMouseUp);
    Event.stopObserving(document, "mousemove", this.eventMouseMove);
    this.handles.each( function(h) {
      Event.stopObserving(h, "mousedown", slider.eventMouseDown);
    });
  },
  setDisabled: function(){
    this.disabled = true;
  },
  setEnabled: function(){
    this.disabled = false;
  },
  getNearestValue: function(value){
    if (this.allowedValues){
      if (value >= this.allowedValues.max()) return(this.allowedValues.max());
      if (value <= this.allowedValues.min()) return(this.allowedValues.min());

      var offset = Math.abs(this.allowedValues[0] - value);
      var newValue = this.allowedValues[0];
      this.allowedValues.each( function(v) {
        var currentOffset = Math.abs(v - value);
        if (currentOffset <= offset){
          newValue = v;
          offset = currentOffset;
        }
      });
      return newValue;
    }
    if (value > this.range.end) return this.range.end;
    if (value < this.range.start) return this.range.start;
    return value;
  },
  setValue: function(sliderValue, handleIdx){
    if (!this.active) {
      this.activeHandleIdx = handleIdx || 0;
      this.activeHandle    = this.handles[this.activeHandleIdx];
      this.updateStyles();
    }
    handleIdx = handleIdx || this.activeHandleIdx || 0;
    if (this.initialized && this.restricted) {
      if ((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
        sliderValue = this.values[handleIdx-1];
      if ((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
        sliderValue = this.values[handleIdx+1];
    }
    sliderValue = this.getNearestValue(sliderValue);
    this.values[handleIdx] = sliderValue;
    this.value = this.values[0]; // assure backwards compat

    this.handles[handleIdx].style[this.isVertical() ? 'top' : 'left'] =
      this.translateToPx(sliderValue);

    this.drawSpans();
    if (!this.dragging || !this.event) this.updateFinished();
  },
  setValueBy: function(delta, handleIdx) {
    this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta,
      handleIdx || this.activeHandleIdx || 0);
  },
  translateToPx: function(value) {
    return Math.round(
      ((this.trackLength-this.handleLength)/(this.range.end-this.range.start)) *
      (value - this.range.start)) + "px";
  },
  translateToValue: function(offset) {
    return ((offset/(this.trackLength-this.handleLength) *
      (this.range.end-this.range.start)) + this.range.start);
  },
  getRange: function(range) {
    var v = this.values.sortBy(Prototype.K);
    range = range || 0;
    return $R(v[range],v[range+1]);
  },
  minimumOffset: function(){
    return(this.isVertical() ? this.alignY : this.alignX);
  },
  maximumOffset: function(){
    return(this.isVertical() ?
      (this.track.offsetHeight != 0 ? this.track.offsetHeight :
        this.track.style.height.replace(/px$/,"")) - this.alignY :
      (this.track.offsetWidth != 0 ? this.track.offsetWidth :
        this.track.style.width.replace(/px$/,"")) - this.alignX);
  },
  isVertical:  function(){
    return (this.axis == 'vertical');
  },
  drawSpans: function() {
    var slider = this;
    if (this.spans)
      $R(0, this.spans.length-1).each(function(r) { slider.setSpan(slider.spans[r], slider.getRange(r)) });
    if (this.options.startSpan)
      this.setSpan(this.options.startSpan,
        $R(0, this.values.length>1 ? this.getRange(0).min() : this.value ));
    if (this.options.endSpan)
      this.setSpan(this.options.endSpan,
        $R(this.values.length>1 ? this.getRange(this.spans.length-1).max() : this.value, this.maximum));
  },
  setSpan: function(span, range) {
    if (this.isVertical()) {
      span.style.top = this.translateToPx(range.start);
      span.style.height = this.translateToPx(range.end - range.start + this.range.start);
    } else {
      span.style.left = this.translateToPx(range.start);
      span.style.width = this.translateToPx(range.end - range.start + this.range.start);
    }
  },
  updateStyles: function() {
    this.handles.each( function(h){ Element.removeClassName(h, 'selected') });
    Element.addClassName(this.activeHandle, 'selected');
  },
  startDrag: function(event) {
    if (Event.isLeftClick(event)) {
      if (!this.disabled){
        this.active = true;

        var handle = Event.element(event);
        var pointer  = [Event.pointerX(event), Event.pointerY(event)];
        var track = handle;
        if (track==this.track) {
        	move_effect = 0;
          var offsets  = Position.cumulativeOffset(this.track);
          this.event = event;
          this.setValue(this.translateToValue(
           (this.isVertical() ? pointer[1]-offsets[1] : pointer[0]-offsets[0])-(this.handleLength/2)
          ));
          var offsets  = Position.cumulativeOffset(this.activeHandle);
          this.offsetX = (pointer[0] - offsets[0]);
          this.offsetY = (pointer[1] - offsets[1]);
        } else {
          // find the handle (prevents issues with Safari)
          while((this.handles.indexOf(handle) == -1) && handle.parentNode)
            handle = handle.parentNode;

          if (this.handles.indexOf(handle)!=-1) {
            this.activeHandle    = handle;
            this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
            this.updateStyles();

            var offsets  = Position.cumulativeOffset(this.activeHandle);
            this.offsetX = (pointer[0] - offsets[0]);
            this.offsetY = (pointer[1] - offsets[1]);
          }
        }
      }
      Event.stop(event);
    }
  },
  update: function(event) {
   if (this.active) {
      if (!this.dragging) this.dragging = true;
      this.draw(event);
      if (Prototype.Browser.WebKit) window.scrollBy(0,0);
      Event.stop(event);
   }
  },
  draw: function(event) {
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    var offsets = Position.cumulativeOffset(this.track);
    pointer[0] -= this.offsetX + offsets[0];
    pointer[1] -= this.offsetY + offsets[1];
    this.event = event;
    this.setValue(this.translateToValue( this.isVertical() ? pointer[1] : pointer[0] ));
    if (this.initialized && this.options.onSlide)
      this.options.onSlide(this.values.length>1 ? this.values : this.value, this);
  },
  endDrag: function(event) {
    if (this.active && this.dragging) {
      this.finishDrag(event, true);
      Event.stop(event);
    }
    this.active = false;
    this.dragging = false;
  },
  finishDrag: function(event, success) {
    this.active = false;
    this.dragging = false;
    this.updateFinished();
  },
  updateFinished: function() {
    if (this.initialized && this.options.onChange)
      this.options.onChange(this.values.length>1 ? this.values : this.value, this);
    this.event = null;
  }
});
/* /assets/ctx/1.0-SNAPSHOT/js/carousel.js */;
/*
Copyright (c) 2009 Victor Stanciu - http://www.victorstanciu.ro

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*/

Carousel = Class.create(Abstract, {
	initialize: function (scroller, slides, controls, options) {
		this.scrolling	= false;
		this.scroller	= $(scroller);
		this.slides		= slides;
		this.controls	= controls;

		this.options    = Object.extend({
            duration:           1,
            auto:               false,
            frequency:          3,
            visibleSlides:      1,
            controlClassName:   'carousel-control',
            jumperClassName:    'carousel-jumper',
            disabledClassName:  'carousel-disabled',
            selectedClassName:  'carousel-selected',
            circular:           false,
            wheel:              true,
            effect:             'scroll',
            transition:         'sinoidal'
        }, options || {});
        
        if (this.options.effect == 'fade') {
            this.options.circular = true;
        }

		this.slides.each(function(slide, index) {
			slide._index = index;
        });

		if (this.controls) {
            this.controls.invoke('observe', 'click', this.click.bind(this));
        }
        
        if (this.options.wheel) {            
            this.scroller.observe('mousewheel', this.wheel.bindAsEventListener(this)).observe('DOMMouseScroll', this.wheel.bindAsEventListener(this));;
        }

        if (this.options.auto) {
            this.start();
        }
		if(this.slides.length<=3){
			if($('next_button')) $('next_button').hide();
		}
		if($('previous_button'))  $('previous_button').setStyle({visibility: "hidden"});	 
		if (this.options.initial) {
			var initialIndex = this.slides.indexOf($(this.options.initial));
			if (initialIndex > (this.options.visibleSlides - 1) && this.options.visibleSlides > 1) {               
				if (initialIndex > this.slides.length - (this.options.visibleSlides + 1)) {
					initialIndex = this.slides.length - this.options.visibleSlides;
				}
			}
            this.moveTo(this.slides[initialIndex]);
		}
	},

	click: function (event) {
		this.stop();

		var element = event.findElement('a');

		if (!element.hasClassName(this.options.disabledClassName)) {
			if (element.hasClassName(this.options.controlClassName)) {
				eval("this." + element.rel + "()");
            } else if (element.hasClassName(this.options.jumperClassName)) {
                this.moveTo(element.rel);
                if (this.options.selectedClassName) {
                    this.controls.invoke('removeClassName', this.options.selectedClassName);
                    element.addClassName(this.options.selectedClassName);
                }
            }
        }

		this.deactivateControls();

		event.stop();
    },

	moveTo: function (element) {
		if (this.options.beforeMove && (typeof this.options.beforeMove == 'function')) {
			this.options.beforeMove();
        }

		this.previous = this.current ? this.current : this.slides[0];
		this.current  = $(element);

		var scrollerOffset = this.scroller.cumulativeOffset();
		var elementOffset  = this.current.cumulativeOffset();

		if (this.scrolling) {
			this.scrolling.cancel();
		}

        switch (this.options.effect) {
            case 'fade':               
                this.scrolling = new Effect.Opacity(this.scroller, {
                    from:   1.0,
                    to:     0,
                    duration: this.options.duration,
                    afterFinish: (function () {
                        this.scroller.scrollLeft = elementOffset[0] - scrollerOffset[0];
                        this.scroller.scrollTop  = elementOffset[1] - scrollerOffset[1];

                        new Effect.Opacity(this.scroller, {
                            from: 0,
                            to: 1.0,
                            duration: this.options.duration,
                            afterFinish: (function () {
                                if (this.controls) {
                                    this.activateControls();
                                }
                                if (this.options.afterMove && (typeof this.options.afterMove == 'function')) {
                                    this.options.afterMove();
                                }
                            }).bind(this)
                        });
                    }
                ).bind(this)});
            break;
            case 'scroll':
            default:
                var transition;
                switch (this.options.transition) {
                    case 'spring':
                        transition = Effect.Transitions.spring;
                        break;
                    case 'sinoidal':
                    default:
                        transition = Effect.Transitions.sinoidal;
                        break;
                }

                this.scrolling = new Effect.SmoothScroll(this.scroller, {
                    duration: this.options.duration,
                    x: (elementOffset[0] - scrollerOffset[0]),
                    y: (elementOffset[1] - scrollerOffset[1]),
                    transition: transition,
                    afterFinish: (function () {
                        if (this.controls) {
                            this.activateControls();
                        }
                        if (this.options.afterMove && (typeof this.options.afterMove == 'function')) {
                            this.options.afterMove();
                        }                        
                        this.scrolling = false;
                    }).bind(this)});
            break;
        }

		return false;
	},

	prev: function () {
		if (this.current) {
			var currentIndex = this.current._index;
			var prevIndex = (currentIndex == 0) ? (this.options.circular ? this.slides.length - 1 : 0) : currentIndex - 1;
			if(currentIndex > 0){
				new Effect.Opacity(this.slides[prevIndex], { from: 0, to: 1, duration: 1 });	
			}			
        } else {
            var prevIndex = (this.options.circular ? this.slides.length - 1 : 0);
            new Effect.Opacity(this.slides[prevIndex], { from: 0, to: 1, duration: 1 });	
        }

		if (prevIndex == (this.slides.length - 1) && this.options.circular && this.options.effect != 'fade') {
			this.scroller.scrollLeft =  (this.slides.length - 1) * this.slides.first().getWidth();
			this.scroller.scrollTop =  (this.slides.length - 1) * this.slides.first().getHeight();
			prevIndex = this.slides.length - 2;
        }
		if (this.current) {        
	        if(this.current._index<=this.slides.length - (this.options.visibleSlides + 2)){
		        $('next_button').setStyle({visibility: "visible"});	        
	        }
        }        
        if (prevIndex == 0) {
	        $('previous_button').setStyle({visibility: "hidden"});
        }
		this.moveTo(this.slides[prevIndex]);
	},

	next: function () {
		if (this.current) {
			var currentIndex = this.current._index;
			var nextIndex = (this.slides.length - 3 == currentIndex) ? (this.options.circular ? 0 : currentIndex) : currentIndex + 1;
			if(currentIndex < (this.slides.length - 3)){
				new Effect.Opacity(this.slides[nextIndex+2], { from: 0, to: 1, duration: 1 });	        
			}
        } else {
            var nextIndex = 1;
            new Effect.Opacity(this.slides[nextIndex+2], { from: 0, to: 1, duration: 1 });	        
        }

		if (nextIndex == 0 && this.options.circular && this.options.effect != 'fade') {
			this.scroller.scrollLeft = 0;
			this.scroller.scrollTop  = 0;
			nextIndex = 1;
        }    
	    
	    $('previous_button').setStyle({visibility: "visible"});
        if (nextIndex == this.slides.length - (this.options.visibleSlides + 2)) {
	        $('next_button').setStyle({visibility: "hidden"});
        }

		if (nextIndex > this.slides.length - (this.options.visibleSlides + 1)) {
			nextIndex = this.slides.length - this.options.visibleSlides;
		}		
		this.moveTo(this.slides[nextIndex]);
	},

	first: function () {
		this.moveTo(this.slides[0]);
    },

	last: function () {
		this.moveTo(this.slides[this.slides.length - 1]);
    },

	toggle: function () {
		if (this.previous) {
			this.moveTo(this.slides[this.previous._index]);
        } else {
            return false;
        }
    },

	stop: function () {
		if (this.timer) {
			clearTimeout(this.timer);
		}
	},

	start: function () { 
        this.periodicallyUpdate();
    },

	pause: function () {
		this.stop();
		this.activateControls();
    },

	resume: function (event) {
		if (event) {
			var related = event.relatedTarget || event.toElement;
			if (!related || (!this.slides.include(related) && !this.slides.any(function (slide) { return related.descendantOf(slide); }))) {
				this.start();
            }
        } else {
            this.start();
        }
    },

	periodicallyUpdate: function () {
		if (this.timer != null) {
			clearTimeout(this.timer);
			this.next();
        }
		this.timer = setTimeout(this.periodicallyUpdate.bind(this), this.options.frequency * 1000);
    },
    
    wheel: function (event) {
        event.cancelBubble = true;
        Event.stop(event);
        
		var delta = 0;
		if (!event) {
            event = window.event;
        }
		if (event.wheelDelta) {
			delta = event.wheelDelta / 120; 
		} else if (event.detail) { 
            delta = -event.detail / 3;	
        }        
       
        if (!this.scrolling) {
            this.deactivateControls();
            if (delta > 0) {
                this.prev();
            } else {
                this.next();
            }            
        }
        
		return Math.round(delta); //Safari Round
    },

	deactivateControls: function () {
		//$('previous_button').hide();
		this.controls.invoke('addClassName', this.options.disabledClassName);
    },

	activateControls: function () {
		//$('previous_button').show();	
		this.controls.invoke('removeClassName', this.options.disabledClassName);
    }
});


Effect.SmoothScroll = Class.create();
Object.extend(Object.extend(Effect.SmoothScroll.prototype, Effect.Base.prototype), {
	initialize: function (element) {
		this.element = $(element);
		var options = Object.extend({ x: 0, y: 0, mode: 'absolute' } , arguments[1] || {});
		this.start(options);
    },

	setup: function () {
		if (this.options.continuous && !this.element._ext) {
			this.element.cleanWhitespace();
			this.element._ext = true;
			this.element.appendChild(this.element.firstChild);
        }

		this.originalLeft = this.element.scrollLeft;
		this.originalTop  = this.element.scrollTop;

		if (this.options.mode == 'absolute') {
			this.options.x -= this.originalLeft;
			this.options.y -= this.originalTop;
        }
    },

	update: function (position) {
		this.element.scrollLeft = this.options.x * position + this.originalLeft;
		this.element.scrollTop  = this.options.y * position + this.originalTop;
    }
});
/* /assets/classpath/1.0-SNAPSHOT/org/equanda/tapestry5/resources/t5equanda.js */;
/** This file is part of the equanda project, http://equanda.org */

/**
 * add trim() function in String class
 */
String.prototype.trim = function()
{
    return this.replace( /^\s+|\s+$/g, "" );
};

/**
 * get window height (browser independent)
 */
function equandaWindowHeight()
{
    var height = 0;
    if( typeof ( window.innerWidth ) == 'number' )
    {
        // Non-IE
        height = window.innerHeight;
    }
    else if( document.documentElement
            && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
    {
        // IE 6+ in 'standards compliant mode'
        height = document.documentElement.clientHeight;
    }
    else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
    {
        // IE 4 compatible
        height = document.body.clientHeight;
    }
    return height;
}

/**
 * get window width (browser independent)
 */
function equandaWindowWidth()
{
    var width = 0;
    if( typeof ( window.innerWidth ) == 'number' )
    {
        // Non-IE
        width = window.innerWidth;
    }
    else if( document.documentElement
            && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
    {
        // IE 6+ in 'standards compliant mode'
        width = document.documentElement.clientWidth;
    }
    else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
    {
        // IE 4 compatible
        width = document.body.clientWidth;
    }
    return width;
}

/**
 * Convert case, use as onkeyup="eqCC( this, 2 );"
 * 
 * @param element - element (usually this)
 * @param caseConversion - case conversion type. 0 for no conversion, 1 for all lower case, 2 for all upper case
 * @return text after case conversion
 */
function eqCC( element, caseConversion )
{
    if( element.value.length == 0 )
        return "";
    var start = element.selectionStart;
    var end = element.selectionEnd;
    if( caseConversion == 2 )
        element.value = element.value.toUpperCase();
    if( caseConversion == 1 )
        element.value = element.value.toLowerCase();
    if( start != null && end != null )
    {
        element.selectionStart = start;
        element.selectionEnd = end;
    }
    return element.value;
}

function eqAxSelR( linkUrlStart, linkUrlEnd, checkbox, objectId )
{
    new Ajax.Request( linkUrlStart + ( checkbox.checked ? "true" : "false" ) + "/" + objectId + linkUrlEnd, {
        method :'post',
        onFailure : function( t )
        {
            alert( 'Error communication with the server: ' + t.responseText.stripTags() );
        },
        onException : function( t, exception )
        {
            alert( 'Error communication with the server: ' + exception.stripTags() );
        },
        onSuccess : function( t )
        {

        }.bind( this )
    } );
}

/**
 * Url encode a string to ensure it can be passed to tapestry5
 * @param string
 */
function eqUrlEnc( string )
{
    string = string.replace(/\r\n/g,"\n");
    var res = "";
    for (var n = 0; n < string.length; n++)
    {
        var c = string.charCodeAt( n );
        if ( '$' == string.charAt( n ) )
        {
            res += '$$';
        }
        else if ( eqInRange( c, "AZ" ) || eqInRange( c, "az" ) || eqInRange( c, "09" ) || eqInRange( c, ".." ) )
        {
            res += string.charAt( n )
        }
        else
        {
            var tmp = c.toString(16);
            while ( tmp.length < 4 ) tmp = "0" + tmp;
            res += '$' + tmp;
        }
    }
    return res;
}

function eqInRange( code, range )
{
    return code >= range.charCodeAt( 0 ) &&  code <= range.charCodeAt( 1 );
}

/**
 * Zone update for text field
 * @param event
 * @param urlStart
 * @param urlEnd
 */
function eqTfzu( event, urlStart, urlEnd )
{
    Event.stop( event );
    var element = event.element();
    var zoneObject = Tapestry.findZoneManager(element);
    if ( !zoneObject ) return;
    var val = element.value;
    if ( '' == val ) val = ' ';
    zoneObject.updateFromURL( urlStart + eqUrlEnc( val ) + urlEnd );
}

/**
 * Switch to edit mode in the edit component.
 * Different effects are used for IE vs rest of world to avoid problems.
 * @param clientId
 * @param page
 */
function eqFFedit( clientId, page, link )
{
    if ( link ) new Ajax.Request( link );
    $( clientId + 'te' + page ).style.display = 'none';
    $( clientId + 'ts' + page ).style.display = 'block';
	if ( Prototype.Browser.IE )
    {
        Effect.Fade( $( clientId + 'show' + page ) );
        Effect.Appear( $( clientId + 'edit' + page ) );
    } else {
        Effect.SlideUp( $( clientId + 'show' + page ) );
        Effect.SlideDown( $( clientId + 'edit' + page ) );
    }
}

/**
 * Switch to show/display mode in the edit component.
 * Different effects are used for IE vs rest of world to avoid problems.
 * @param clientId
 * @param page
 */
function eqFFshow( clientId, page, link )
{
    if ( link ) new Ajax.Request( link );
    $( clientId + 'te' + page ).style.display = 'block';
    $( clientId + 'ts' + page ).style.display = 'none';
    if ( Prototype.Browser.IE )
    {
        Effect.Fade( $( clientId + 'edit' + page ) );
        Effect.Appear( $( clientId + 'show' + page ) );
    } else {
        Effect.SlideUp( $( clientId + 'edit' + page ) );
        Effect.SlideDown( $( clientId + 'show' + page ) );
    }
}

/* for accordion component */

var EQUANDA_ACCORDION_SKIP = "eqTravSkip";

/* equandaAccordion change pane */
function eqAcc( el, indx )
{
    el = $( el );
    if ( el.tagName == "A" ) el = $( el.up() );
    var accordionId = el.parentNode.id;
    if ( !el.hasClassName( accordionId + "_atit" ) )
    {
        $$( '.' + accordionId + '_atit').each( function deactivate( object )
        {
            object.next().style.display = "none";
            object.removeClassName( accordionId + '_atit' );
            object.down().removeClassName( EQUANDA_ACCORDION_SKIP );
        } );
        el.addClassName( accordionId + '_atit' );
        el.down().addClassName( EQUANDA_ACCORDION_SKIP );
        el.next().style.display = "block";
    }
    document.cookie = "active_index_" + accordionId + "=" + ( indx + 1 ) + "; path=/";
}

/* for formactionlink component */

function eqFal( url )
{
    $( 'eqFalT' ).value = url;
    $( 'eqFalT' ).form.submit();
}

/* for formtraversal component */

// assure first item in form gets focus

function eqFtFocus()
{
    var form=document.forms[0];
    if (form!=null)
    {
        var i, tr, td, elem, tbody;
        for (i=0; i<form.elements.length; i++)
        {
            elem = $( form.elements[i] );
            if (((elem.tagName=="INPUT" ) && ((elem.type=="text") || (elem.type=="checkbox"))) || (elem.tagName=="SELECT"))
            {
                if ((elem.style.display!="none") && !(elem.disabled) && (elem.className!="nodisplay"))
                {
                    td=elem.parentNode;
                    tr=td.parentNode;
                    tbody=tr.parentNode;
                    if ((td.style.display!="none") && (td.className!="displayNone") && (tr.style.display!="none") && (tr.className!="displayNone") && (tbody.style.display!="none") && (tbody.className!="displayNone"))
                    {
                        if (elem.tagName=="INPUT") elem.select();
                        else elem.focus();
                        break;
                    }
                 }
            }
        }
    }
}

// form traversal

var EQUANDA_FT_DEFAULT_SUBMIT = "defaultSubmit";
var EQUANDA_FT_VISCHECK = 25; // check so many parents to be visible
var EQUANDA_FT_SKIP = "eqTravSkip";
var EQUANDA_FT_INVOKELINK_FORWARD = "eqTravFw";
var EQUANDA_FT_INVOKELINK_BACKWARD = "eqTravBw";
var EQUANDA_FT_MOVELINK = "eqTravMove";
var EQUANDA_FT_ENTEROVERRIDE = "eqTravEnter";

function eqFtInit()
{
    document.onkeypress = eqFtKeyHandler;
}

function eqFtKeyHandler( evnt )
{
    var key;
    if (!evnt) evnt = window.event;
    if (evnt.keyCode) key = evnt.keyCode; else if (evnt.which) key = evnt.which;
    if ( key == 10 ) key = 13; // assure \n and \r are treated the same (for IE)
    var input = $( evnt.target ? evnt.target : window.event.srcElement );
    if ( key == 9 || key == 13 )
    {
        // special enter handling
        if ( key == 13 )
        {
            // ctrl-enter should invoke default submit (if any)
            if ( evnt.ctrlKey )
            {
                var submit = $$("."+EQUANDA_FT_DEFAULT_SUBMIT);
                if (submit.length>0)
                {
                    eqFtClick( submit[0] );
                    return false;
                }
            }

            // shift-enter should work as usual (needed for textarea)
            if ( evnt.shiftKey ) return true;

            // enter should work as normal when overridden
            if ( input.hasClassName( EQUANDA_FT_ENTEROVERRIDE ) ) return true;

            // enter on default submit should just submit
            if ( input.hasClassName( EQUANDA_FT_DEFAULT_SUBMIT ) )
            {
                eqFtClick( input );
                return false;
            }
        }

        var direction = 1;
        if ( key != 13 && evnt.shiftKey ) direction = -1;

        while ( 1 == 1 )
        {
            input = eqFtTraverse( input, direction );
            if ( input.hasClassName( EQUANDA_FT_SKIP ) ) continue;
            if ( direction > 0 && input.hasClassName( EQUANDA_FT_INVOKELINK_FORWARD ) ) eqFtClick( input );
            if ( direction < 0 && input.hasClassName( EQUANDA_FT_INVOKELINK_BACKWARD ) ) eqFtClick( input );
            if ( input.hasClassName( EQUANDA_FT_MOVELINK ) )
            {
                var attr = input.getAttribute( 'href' );
                if ( attr && attr.charAt(0)=='#') attr=attr.substring(1);
                input=$(attr);
            }

            if ( eqFtIsFocusable( input ) && eqFtIsVisible( input ) )
            {
                input.focus();
                return false;
            }
        }
    }
    else
    {
        if ( key == 32 ) eqFtClick( input );
    }
    return true;
}

function eqFtIsVisible( element )
{
    // need to move up the tree as getStyle doew not check parent style (which is reasonable enough)
    var depth = EQUANDA_FT_VISCHECK;
    while ( depth > 0 && element != null && element.tagName != "BODY" )
    {
        if ( element.getStyle('display')=='none' || element.hasClassName( 'nodisplay' ) ) return false;
        element = element.up();
    }
    return true;
}

function eqFtIsFocusable( element )
{
    if ( element.disabled ) return false;
    if ( element.tagName == "A" && element.href ) return true;
    if ( element.tagName == "INPUT" && element.type != "hidden" ) return true;
    if ( element.tagName == "TEXTAREA" && element.type != "hidden" ) return true;
    if ( element.tagName == "SELECT" ) return true;
    if ( element.tagName == "BUTTON" ) return true;
    return false;
}

function eqFtTraverse( element, direction )
{
    var next;
    if ( direction > 0 )
    {
        next = element.down();
        if (!next) next = element.next();
        while ( !next && element && element.tagName != "BODY" )
        {
            element = element.up();
            next = element.next();
        }
        if ( !next ) next = $$( 'body' )[0];
    }
    else
    {
        next = element.previous();
        if ( next ) next = eqFtLastChild( next );
        if ( !next ) next = element.up();
	    if ( next.tagName == "BODY" ) next = eqFtLastChild( next );
    }
    return next;
}

function eqFtLastChild( element )
{
    while ( element.descendants().length > 0 )
    {
        var desc = element.descendants();
        element = desc[ desc.length - 1 ];
    }
    return $( element );
}

function eqFtClick( element )
{
    if ( element.click )
    {
        element.click();
    }
    else if ( element.href )
    {
        if ( !element.onclick )
        {
            window.location.href = element.href;
        }
        else
        {
            if ( element.onclick() )
            {
                window.location.href = element.href;
            }
        }
    }
}

/* for jspager component */

// Object to store all pager configurations
var eqJsplC = new Object();

/**
 * Shows selected page of the paged loop component
 *
 * @param pageIdx - selected page index
 * @param config - configuration object which contains all required data for JS pager
 */
function eqShwPg( pageIdx, config )
{
    if( config == undefined )
    {
        return;
    }

    var rows = $$( "." + config.rowClass );

    var arr = $$( "." + config.containerClass );
    if( arr.length == 0 )
    {
        return;
    }

    var container = arr[0];

    if( pageIdx )
    {
        config.currentPage = pageIdx;
    }

    if( !config.currentPage )
    {
        config.currentPage = 1;
    }

    var availableRows = config.rowCount - config.additionalRowCount + config.addedRowCount;

    config.maxPages = Math.floor( ( ( availableRows - 1 ) / config.rowsPerPage ) + 1 );
    if( config.maxPages > 0 && config.currentPage > config.maxPages )
    {
        config.currentPage = config.maxPages;
    }

    var startIndex = config.rowsPerPage * ( config.currentPage - 1 );
    var endIndex = startIndex + config.rowsPerPage - 1;

    for( var i = 0; i < rows.length; i++ )
    {
        if( i >= startIndex && i <= endIndex && i < config.rowCount - config.additionalRowCount + config.addedRowCount )
        {
            rows[i].show();
        }
        else
        {
            rows[i].hide();
        }
    }

    $( config.currentPageFieldName ).value = "" + config.currentPage;

    container.hide();

    container.innerHTML = "";

    if( config.maxPages < 2 )
    {
        return;
    }

    config.lastIndex = 0;

    for( var i = 1; i <= 2; i++ )
    {
        equandaWritePageLink( container, i, config, config.name );
    }

    var low = config.currentPage - config.range;
    var high = config.currentPage + config.range;

    if( low < 1 )
    {
        low = 1;
        high = 2 * config.range + 1;
    }
    else
    {
        if( high > config.maxPages )
        {
            high = config.maxPages;
            low = high - 2 * config.range;
        }
    }

    for( var i = low; i <= high; i++ )
    {
        equandaWritePageLink( container, i, config, config.name );
    }

    for( var i = config.maxPages - 1; i <= config.maxPages; i++ )
    {
        equandaWritePageLink( container, i, config, config.name );
    }

    container.show();
}

/**
 * Writes page links
 *
 * @param element - parent element
 * @param pageIndex - selected page
 * @param config - configuration object
 */
function equandaWritePageLink( element, pageIndex, config )
{
    if( pageIndex < 1 || pageIndex > config.maxPages )
        return;

    if( pageIndex <= config.lastIndex )
        return;

    if( pageIndex != config.lastIndex + 1 )
    {
        element.appendChild( document.createTextNode( "..." ) );
    }

    config.lastIndex = pageIndex;

    if( pageIndex == config.currentPage )
    {
        var span = document.createElement( "span" );
        span.className = "eqplc";
        span.innerHTML = "" + pageIndex;
        element.appendChild( span );
        return;
    }

    var anchor = document.createElement( "a" );
    anchor.href = "javascript:;";
    anchor.onclick = function()
    {
        eqShwPg( pageIndex, config );
    };
    anchor.title = "Goto Page " + pageIndex;
    anchor.innerHTML = "" + pageIndex;
    element.appendChild( anchor );
}

/**
 * Adds new row to paged loop
 *
 * @param config - configuration object
 */
function eqJsplA( config )
{
    if( !config || config.additionalRowCount == 0 || config.rowCount == 0 )
    {
        return;
    }

    if( config.addedRowCount < config.additionalRowCount )
    {
        config.addedRowCount = config.addedRowCount + 1;
    }

    eqChAL( config );

    $( config.addedRowFieldName ).value = "" + config.addedRowCount;

    eqShwPg( config.currentPage, config );
}

/**
 * Shows or hides links depends on count of added rows
 *
 * @param config - configuration object
 */
function eqChAL( config )
{
    var addLinks = $$( "." + config.addLinkClass );
    var addBlocks = $$( "." + config.addBlockClass );
    if( addLinks.length == 0 || addBlocks.length == 0 )
    {
        return;
    }
    if( config.additionalRowCount == 0 || config.addedRowCount == config.additionalRowCount )
    {
        addLinks[0].hide();
        addBlocks[0].show();
    }
    else
    {
        addLinks[0].show();
        addBlocks[0].hide();
    }
}

/**
 * Marks row as deleted
 *
 * @param anchor - clicked link
 * @param hiddenId - id of hidden component with deleted rows
 * @param index - deleted row index
 * @param rowContentClass - css class of the row
 * @param revertAnchorId - revert anchor id
 */
function eqMarkDel( anchor, hiddenId, index, rowContentClass, revertAnchorId )
{
    if( hiddenId && $( hiddenId ) != null && index >= 0 )
    {
        var hidden = $( hiddenId );

        var arrValues = eqStr2IntArr( hidden.value );

        arrValues.push( index );
        arrValues = arrValues.uniq();

        hidden.value = arrValues.join( "," );

        var rows = $$( "." + rowContentClass );
        if( rows.length > 0 )
        {
            rows[0].style.backgroundColor = "red";
            rows[0].style.padding = "2px";
        }

        var revertLink = $( revertAnchorId );
        if( revertLink != null )
        {
            revertLink.style.display = "block";
        }
        anchor.style.display = "none";
    }
}

/**
 * Removes row index from list of deleted rows
 *
 * @param anchor - clicked link
 * @param hiddenId - id of hidden component with deleted rows
 * @param index - deleted row index
 * @param rowContentClass - css class of the row
 * @param deleteAnchorId - delete anchor id
 */
function eqRevDel( anchor, hiddenId, index, rowContentClass, deleteAnchorId )
{
    if( hiddenId && $( hiddenId ) != null && index >= 0 )
    {
        var hidden = $( hiddenId );

        var arrValues = eqStr2IntArr( hidden.value );

        arrValues = arrValues.without( index );

        hidden.value = arrValues.join( "," );

        var rows = $$( "." + rowContentClass );
        if( rows.length > 0 )
        {
            rows[0].style.backgroundColor = "white";
            rows[0].style.padding = "0";
        }
    }

    var deleteLink = $( deleteAnchorId );
    if( deleteLink != null )
    {
        deleteLink.style.display = "block";
    }
    anchor.style.display = "none";
}

/**
 * Splits string to array of integers
 *
 * @param str - string to split
 * @param delimiter - value delimiter
 * @return new array of integers
 */
function eqStr2IntArr( str, delimiter )
{
    var arr = new Array();
    if( str )
    {
        var strs = str.split( delimiter && delimiter.length > 0 ? delimiter : "," );
        for( var i = 0; i < strs.length; i++ )
        {
            if( strs[i] && strs[i].length > 0 )
            {
                var num = parseInt( strs[i] );
                if( !isNaN( num ) )
                {
                    arr.push( num );
                }
            }
        }
    }
    arr = arr.uniq();
    return arr;
}

/* for tabs component */

var EQUANDA_TABS_ACTIVE = "eqTabsA";
var EQUANDA_TABS_TRAVERSE = "eqTravSkip";
var EQUANDA_TABS_ALL = "eqTabsAll";

function eqTabsCl( title, content, usingCookies )
{
    var tabsId = title.up().up().up().readAttribute( "id" );
    var titleId = title.readAttribute( "id" );
    var indexstr = titleId.substr( titleId.length - 1);
    var index = parseInt( indexstr );
    if ( !title.hasClassName( EQUANDA_TABS_ACTIVE ) )
    {
        title.addClassName( EQUANDA_TABS_ACTIVE );
        title.addClassName( EQUANDA_TABS_TRAVERSE );
        title.up().siblings().each( function rem( el ) {
            el.down().removeClassName( EQUANDA_TABS_ACTIVE ).removeClassName( EQUANDA_TABS_TRAVERSE );
        } );
        content.style.display = "block";
        content.siblings().each( function rem( el ) {
            if ( !el.hasClassName( EQUANDA_TABS_ALL ) ) el.style.display = "none";
        } );
        if (usingCookies)
        {
            document.cookie = "active_index_" + tabsId + "=" + ( index + 1) + "; path=/";
        }
    }
    return false;
}

/* for treetable component */

function eqTTtoggleRows( elm )
{
    var rows = document.getElementsByTagName("TR");
    elm.className = "folderclose";
    var newDisplay = "none";
    var thisID = elm.parentNode.parentNode.parentNode.id + "-";
    // Are we expanding or contracting? If the first child is hidden, we expand
    for ( var i = 0 ; i < rows.length ; i++ )
    {
        var r = rows[i];
        if ( eqTTmatchStart(r.id, thisID, true) )
        {
            if ( r.style.display == "none" )
            {
                if ( document.all ) newDisplay = "block"; //IE4+ specific code
                else newDisplay = "table-row"; //Netscape and Mozilla
                elm.className = "folderopen";
            }
            break;
        }
    }

    // When expanding, only expand one level.  Collapse all descendants.
    var matchDirectChildrenOnly = (newDisplay != "none");

    for ( var j = 0 ; j < rows.length ; j++ )
    {
        var s = rows[j];
        if ( eqTTmatchStart(s.id, thisID, matchDirectChildrenOnly) )
        {
            s.style.display = newDisplay;
            var cell = s.getElementsByTagName("TD")[0];
            var tier = cell.getElementsByTagName("DIV")[0];
            var folder = tier.getElementsByTagName("A")[0];
            if ( folder.getAttribute("onclick") != null )
            {
                folder.className = "folderclose";
            }
        }
    }
}

function eqTTtoggle( elm )
{
    var folder = elm.getElementsByTagName("A")[0];
    eqTTtoggleRows(folder);
}

function eqTTmatchStart( target, pattern, matchDirectChildrenOnly )
{
    var pos = target.indexOf(pattern);
    if ( pos != 0 ) return false;
    if ( !matchDirectChildrenOnly ) return true;
    if ( target.slice(pos + pattern.length, target.length).indexOf("-") >= 0 ) return false;
    return true;
}

/* for truncate component */

var disappearDelay = 250; // Delay before hiding of popup
var verticalOffset = 0; // Vertical popup offset
var isIE = document.all; // IE check

/* Gets offset of the element with full text from the short text element */
function equandaGetPositionOffset( what, offsettype ){
	var totaloffset = ( offsettype == "left" ) ? what.offsetLeft : what.offsetTop;
	var parentEl = what.offsetParent;
	while( parentEl != null ){
		totaloffset = ( offsettype == "left" ) ? totaloffset + parentEl.offsetLeft : totaloffset + parentEl.offsetTop;
		parentEl = parentEl.offsetParent;
	}
	return totaloffset;
}

/* Shows or hides element */
function equandaShowHide( obj, e ){
	textObject.style.left = textObject.style.top = "-500px";
	if( e.type == "mouseover" ){
		obj.visibility = "visible";
	}
}

/* Checks for compatibility  and returns suitable document's body */
function equandaCompatibleObject(){
	return ( document.compatMode && document.compatMode != "BackCompat") ? document.documentElement : document.body;
}

/* Gets browser's edge offset */
function equandaClearBrowserEdge( obj, targetEdge ){
	if( targetEdge == "rightedge" ){
		edgeoffsetx = 0;
		var windowedge = isIE && !window.opera ? equandaCompatibleObject().scrollLeft + equandaCompatibleObject().clientWidth - 15 : window.pageXOffset + window.innerWidth - 15;
		textObject.contentmeasure = textObject.offsetWidth;
		if( windowedge - textObject.x < textObject.contentmeasure ){
			edgeoffsetx = textObject.contentmeasure - obj.offsetWidth;
		}
		return edgeoffsetx;
	} else {
		edgeoffsety = 0;
		var topedge = isIE && !window.opera ? equandaCompatibleObject().scrollTop : window.pageYOffset;
		var windowedge = isIE && !window.opera ? equandaCompatibleObject().scrollTop + equandaCompatibleObject().clientHeight - 15 : window.pageYOffset+window.innerHeight - 18;
		textObject.contentmeasure = textObject.offsetHeight;
		if( windowedge - textObject.y < textObject.contentmeasure ){
			edgeoffsety = textObject.contentmeasure + obj.offsetHeight + ( verticalOffset * 2 );
		}
		return edgeoffsety;
	}
}

/* Shows element with full text */
function equandaShowText( obj, e ){
	if( window.event ){
		event.cancelBubble = true;
	} else if( e.stopPropagation ){
		e.stopPropagation();
	}
	if( typeof textObject != "undefined" ){
		 textObject.style.visibility = "hidden";
	}
	equandaClearHide();
	textObject = document.getElementById( obj.getAttribute( "id" ) + "_text" );
	equandaShowHide( textObject.style, e );
	textObject.x = equandaGetPositionOffset( obj, "left" );
	textObject.y = equandaGetPositionOffset( obj, "top" ) + verticalOffset;
	textObject.style.left = textObject.x - equandaClearBrowserEdge( obj, "rightedge" ) + "px";
	textObject.style.top = textObject.y - equandaClearBrowserEdge( obj, "bottomedge" ) + obj.offsetHeight + "px";
}

/* Hides popup with delay */
function equandaHideWithDelay(){
	delayhide = setTimeout( "textObject.style.visibility = 'hidden'; textObject.style.left = 0;", disappearDelay );
}

/* Clears timeout object */
function equandaClearHide(){
	if( typeof delayhide != "undefined" ){
		clearTimeout( delayhide );
	}
}

/* Initializes mouse's events on element with truncated text */
function eqTruncInit( id )
{
	var e = document.getElementById( id );
	if( e != null ){
		e.onmouseover = function(e){
			var ev = window.event ? window.event : e;
			equandaShowText( this, ev );
		}
		e.onmouseout = equandaHideWithDelay;
	}
}

/* TextAreaAutoExpander */

/**
 * @name : Textarea Expander With Animation
 * @originalAuthor : Swapnil Sarwe
 * @original : http://swapnilsarwe.phpnet.us/text-area-auto-xpander.html
 * @description : Based on and inspired by James Padolsey's jQuery autoResize
 *              The basic idea is to have textarea expand as the user types in
 *              the content, so that the user never has the scroll bar appear
 *              for the textarea.
 * @see : http://james.padolsey.com/javascript/jquery-plugin-autoresize/
 *
 * original modified to automatically apply directly on all textareas (Joachim)
 * and to assure it works on hidden textareas
 */
function equandaXpander(options) {
	makeDuplicate = function(el) {
		var newEl = el.cloneNode(true);
		newEl.removeAttribute('id');
		newEl.removeAttribute('name');
		newEl.style['marginLeft'] = "-9999px";
		newEl.style['display'] = "block";
		return newEl;
	};
	insertAfter = function(target, bullet) {
		target.nextSibling ? target.parentNode.insertBefore(bullet,
				target.nextSibling) : target.parentNode.appendChild(bullet);
	};

	var lastHeight = null;
	activateResize = function(evt) {
		evt = evt || window.event;
		resize( this );
		if (evt.preventDefault) {
			evt.preventDefault();
		} else {
			evt.returnValue = false;
		}
	};
	resize = function(el) {
		var cloned = el.clone;
		cloned.value = el.value;
		if (!lastHeight) {
			lastHeight = el.clientHeight;
		} else {
			lastHeight = cloned.scrollHeight;
		}
		var newHeight = cloned.scrollHeight + options.xtraSpace;
		if (newHeight == el.clientHeight)
			return;
        el = $( el );
        el.setStyle("height:"+newHeight+"px;");
	};
	$$('textarea').each( function activate( object )
    {
        if ( object.style['marginLeft'] != "-9999px" )
        {
            object.style['overflowY'] = 'hidden';
            var dupA = makeDuplicate(object);
            object.clone = dupA;
            $$('body')[0].insert( dupA );

            object.observe( 'keyup', activateResize );
            resize( object );
        }
    } );
}
;/**/
Tapestry.markScriptLibrariesLoaded(["/assets/scriptaculous/5.1.0.5/prototype.js","/assets/scriptaculous/5.1.0.5/scriptaculous.js","/assets/scriptaculous/5.1.0.5/effects.js","/assets/tapestry/5.1.0.5/tapestry.js","/assets/ctx/1.0-SNAPSHOT/js/blackbird.js","/assets/tapestry/5.1.0.5/tapestry-messages_de.js","/assets/ctx/1.0-SNAPSHOT/js/preload.js","/assets/ctx/1.0-SNAPSHOT/js/slider.js","/assets/ctx/1.0-SNAPSHOT/js/carousel.js","/assets/classpath/1.0-SNAPSHOT/org/equanda/tapestry5/resources/t5equanda.js"]);