/modules/activiti-webapp-explorer2/src/main/webapp/libs/ext-2.0.2/adapter/prototype/prototype.js

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/*  Prototype JavaScript framework, version 1.6.0.2

 *  (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: '1.6.0.2',



  Browser: {

    IE:     !!(window.attachEvent && !window.opera),

    Opera:  !!window.opera,

    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,

    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 = Object.extend((function(m) {

          return function() { return ancestor[m].apply(this, arguments) };

        })(property).wrap(method), {

          valueOf:  function() { return method },

          toString: function() { return method.toString() }

        });

      }

      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].split(",").invoke("strip");

    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);

  },



  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)));

    };

  }

});



Function.prototype.defer = Function.prototype.delay.curry(0.01);



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.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('')

});



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

    iterator = iterator.bind(context);

    try {

      this._each(function(value) {

        iterator(value, index++);

      });

    } catch (e) {

      if (e != $break) throw e;

    }

    return this;

  },



  eachSlice: function(number, iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var index = -number, slices = [], array = this.toArray();

    while ((index += number) < array.length)

      slices.push(array.slice(index, index+number));

    return slices.collect(iterator, context);

  },



  all: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var result = true;

    this.each(function(value, index) {

      result = result && !!iterator(value, index);

      if (!result) throw $break;

    });

    return result;

  },



  any: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var result = false;

    this.each(function(value, index) {

      if (result = !!iterator(value, index))

        throw $break;

    });

    return result;

  },



  collect: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var results = [];

    this.each(function(value, index) {

      results.push(iterator(value, index));

    });

    return results;

  },



  detect: function(iterator, context) {

    iterator = iterator.bind(context);

    var result;

    this.each(function(value, index) {

      if (iterator(value, index)) {

        result = value;

        throw $break;

      }

    });

    return result;

  },



  findAll: function(iterator, context) {

    iterator = iterator.bind(context);

    var results = [];

    this.each(function(value, index) {

      if (iterator(value, index))

        results.push(value);

    });

    return results;

  },



  grep: function(filter, iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var results = [];



    if (Object.isString(filter))

      filter = new RegExp(filter);



    this.each(function(value, index) {

      if (filter.match(value))

        results.push(iterator(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) {

    iterator = iterator.bind(context);

    this.each(function(value, index) {

      memo = iterator(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 ? iterator.bind(context) : Prototype.K;

    var result;

    this.each(function(value, index) {

      value = iterator(value, index);

      if (result == null || value >= result)

        result = value;

    });

    return result;

  },



  min: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var result;

    this.each(function(value, index) {

      value = iterator(value, index);

      if (result == null || value < result)

        result = value;

    });

    return result;

  },



  partition: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var trues = [], falses = [];

    this.each(function(value, index) {

      (iterator(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) {

    iterator = iterator.bind(context);

    var results = [];

    this.each(function(value, index) {

      if (!iterator(value, index))

        results.push(value);

    });

    return results;

  },



  sortBy: function(iterator, context) {

    iterator = iterator.bind(context);

    return this.map(function(value, index) {

      return {value: value, criteria: iterator(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 [];

    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&

        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) {

    $R(0, this, true).each(iterator);

    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) {

      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.map(function(pair) {

        var key = encodeURIComponent(pair.key), values = pair.value;



        if (values && typeof values == 'object') {

          if (Object.isArray(values))

            return values.map(toQueryPair.curry(key)).join('&');

        }

        return toQueryPair(key, values);

      }).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 || { });

}).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).style.display = 'none';

    return element;

  },



  show: function(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(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) …