laserkard: js-lib/prototype.js comparison

comparison js-lib/prototype.js @ 79:343dc947f999 laserkard

read JavaSctipt: the good parts

author	Robert McIntyre <rlm@mit.edu>
date	Sun, 25 Jul 2010 01:33:22 -0400
parents
children

comparison

equal deleted inserted replaced

-:4ebd94bfecda
+:343dc947f999
+/*  Prototype JavaScript framework, version 1.6.1
+*  (c) 2005-2009 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: '1.6.1',
+Browser: (function(){
+var ua = navigator.userAgent;
+var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]';
+return {
+IE:             !!window.attachEvent && !isOpera,
+Opera:          isOpera,
+WebKit:         ua.indexOf('AppleWebKit/') > -1,
+Gecko:          ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1,
+MobileSafari:   /Apple.*Mobile.*Safari/.test(ua)
+}
+})(),
+BrowserFeatures: {
+XPath: !!document.evaluate,
+SelectorsAPI: !!document.querySelector,
+ElementExtensions: (function() {
+var constructor = window.Element || window.HTMLElement;
+return !!(constructor && constructor.prototype);
+})(),
+SpecificElementExtensions: (function() {
+if (typeof window.HTMLDivElement !== 'undefined')
+return true;
+var div = document.createElement('div');
+var form = document.createElement('form');
+var isSupported = false;
+if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) {
+isSupported = true;
+}
+div = form = null;
+return isSupported;
+})()
+},
+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;
+var Abstract = { };
+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;
+}
+};
+/* Based on Alex Arnell's inheritance implementation. */
+var Class = (function() {
+function subclass() {};
+function create() {
+var parent = null, properties = $A(arguments);
+if (Object.isFunction(properties[0]))
+parent = properties.shift();
+function klass() {
+this.initialize.apply(this, arguments);
+}
+Object.extend(klass, Class.Methods);
+klass.superclass = parent;
+klass.subclasses = [];
+if (parent) {
+subclass.prototype = parent.prototype;
+klass.prototype = new subclass;
+parent.subclasses.push(klass);
+}
+for (var i = 0; i < properties.length; i++)
+klass.addMethods(properties[i]);
+if (!klass.prototype.initialize)
+klass.prototype.initialize = Prototype.emptyFunction;
+klass.prototype.constructor = klass;
+return klass;
+}
+function addMethods(source) {
+var ancestor   = this.superclass && this.superclass.prototype;
+var properties = Object.keys(source);
+if (!Object.keys({ toString: true }).length) {
+if (source.toString != Object.prototype.toString)
+properties.push("toString");
+if (source.valueOf != Object.prototype.valueOf)
+properties.push("valueOf");
+}
+for (var i = 0, length = properties.length; i < length; i++) {
+var property = properties[i], value = source[property];
+if (ancestor && Object.isFunction(value) &&
+value.argumentNames().first() == "$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;
+}
+return {
+create: create,
+Methods: {
+addMethods: addMethods
+}
+};
+})();
+(function() {
+var _toString = Object.prototype.toString;
+function extend(destination, source) {
+for (var property in source)
+destination[property] = source[property];
+return destination;
+}
+function inspect(object) {
+try {
+if (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;
+}
+}
+function toJSON(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 (isElement(object)) return;
+var results = [];
+for (var property in object) {
+var value = toJSON(object[property]);
+if (!isUndefined(value))
+results.push(property.toJSON() + ': ' + value);
+}
+return '{' + results.join(', ') + '}';
+}
+function toQueryString(object) {
+return $H(object).toQueryString();
+}
+function toHTML(object) {
+return object && object.toHTML ? object.toHTML() : String.interpret(object);
+}
+function keys(object) {
+var results = [];
+for (var property in object)
+results.push(property);
+return results;
+}
+function values(object) {
+var results = [];
+for (var property in object)
+results.push(object[property]);
+return results;
+}
+function clone(object) {
+return extend({ }, object);
+}
+function isElement(object) {
+return !!(object && object.nodeType == 1);
+}
+function isArray(object) {
+return _toString.call(object) == "[object Array]";
+}
+function isHash(object) {
+return object instanceof Hash;
+}
+function isFunction(object) {
+return typeof object === "function";
+}
+function isString(object) {
+return _toString.call(object) == "[object String]";
+}
+function isNumber(object) {
+return _toString.call(object) == "[object Number]";
+}
+function isUndefined(object) {
+return typeof object === "undefined";
+}
+extend(Object, {
+extend:        extend,
+inspect:       inspect,
+toJSON:        toJSON,
+toQueryString: toQueryString,
+toHTML:        toHTML,
+keys:          keys,
+values:        values,
+clone:         clone,
+isElement:     isElement,
+isArray:       isArray,
+isHash:        isHash,
+isFunction:    isFunction,
+isString:      isString,
+isNumber:      isNumber,
+isUndefined:   isUndefined
+});
+})();
+Object.extend(Function.prototype, (function() {
+var slice = Array.prototype.slice;
+function update(array, args) {
+var arrayLength = array.length, length = args.length;
+while (length--) array[arrayLength + length] = args[length];
+return array;
+}
+function merge(array, args) {
+array = slice.call(array, 0);
+return update(array, args);
+}
+function argumentNames() {
+var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1]
+.replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '')
+.replace(/\s+/g, '').split(',');
+return names.length == 1 && !names[0] ? [] : names;
+}
+function bind(context) {
+if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
+var __method = this, args = slice.call(arguments, 1);
+return function() {
+var a = merge(args, arguments);
+return __method.apply(context, a);
+}
+}
+function bindAsEventListener(context) {
+var __method = this, args = slice.call(arguments, 1);
+return function(event) {
+var a = update([event || window.event], args);
+return __method.apply(context, a);
+}
+}
+function curry() {
+if (!arguments.length) return this;
+var __method = this, args = slice.call(arguments, 0);
+return function() {
+var a = merge(args, arguments);
+return __method.apply(this, a);
+}
+}
+function delay(timeout) {
+var __method = this, args = slice.call(arguments, 1);
+timeout = timeout * 1000
+return window.setTimeout(function() {
+return __method.apply(__method, args);
+}, timeout);
+}
+function defer() {
+var args = update([0.01], arguments);
+return this.delay.apply(this, args);
+}
+function wrap(wrapper) {
+var __method = this;
+return function() {
+var a = update([__method.bind(this)], arguments);
+return wrapper.apply(this, a);
+}
+}
+function methodize() {
+if (this._methodized) return this._methodized;
+var __method = this;
+return this._methodized = function() {
+var a = update([this], arguments);
+return __method.apply(null, a);
+};
+}
+return {
+argumentNames:       argumentNames,
+bind:                bind,
+bindAsEventListener: bindAsEventListener,
+curry:               curry,
+delay:               delay,
+defer:               defer,
+wrap:                wrap,
+methodize:           methodize
+}
+})());
+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"';
+};
+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();
+this.currentlyExecuting = false;
+} catch(e) {
+this.currentlyExecuting = false;
+throw e;
+}
+}
+}
+});
+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, (function() {
+function prepareReplacement(replacement) {
+if (Object.isFunction(replacement)) return replacement;
+var template = new Template(replacement);
+return function(match) { return template.evaluate(match) };
+}
+function gsub(pattern, replacement) {
+var result = '', source = this, match;
+replacement = prepareReplacement(replacement);
+if (Object.isString(pattern))
+pattern = RegExp.escape(pattern);
+if (!(pattern.length || pattern.source)) {
+replacement = replacement('');
+return replacement + source.split('').join(replacement) + 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;
+}
+function sub(pattern, replacement, count) {
+replacement = prepareReplacement(replacement);
+count = Object.isUndefined(count) ? 1 : count;
+return this.gsub(pattern, function(match) {
+if (--count < 0) return match[0];
+return replacement(match);
+});
+}
+function scan(pattern, iterator) {
+this.gsub(pattern, iterator);
+return String(this);
+}
+function truncate(length, truncation) {
+length = length || 30;
+truncation = Object.isUndefined(truncation) ? '...' : truncation;
+return this.length > length ?
+this.slice(0, length - truncation.length) + truncation : String(this);
+}
+function strip() {
+return this.replace(/^\s+/, '').replace(/\s+$/, '');
+}
+function stripTags() {
+return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, '');
+}
+function stripScripts() {
+return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+}
+function extractScripts() {
+var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+return (this.match(matchAll) || []).map(function(scriptTag) {
+return (scriptTag.match(matchOne) || ['', ''])[1];
+});
+}
+function evalScripts() {
+return this.extractScripts().map(function(script) { return eval(script) });
+}
+function escapeHTML() {
+return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
+}
+function unescapeHTML() {
+return this.stripTags().replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
+}
+function toQueryParams(separator) {
+var match = this.strip().match(/([^?#]*)(#.*)?$/);
+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;
+});
+}
+function toArray() {
+return this.split('');
+}
+function succ() {
+return this.slice(0, this.length - 1) +
+String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+}
+function times(count) {
+return count < 1 ? '' : new Array(count + 1).join(this);
+}
+function camelize() {
+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;
+}
+function capitalize() {
+return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+}
+function underscore() {
+return this.replace(/::/g, '/')
+.replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2')
+.replace(/([a-z\d])([A-Z])/g, '$1_$2')
+.replace(/-/g, '_')
+.toLowerCase();
+}
+function dasherize() {
+return this.replace(/_/g, '-');
+}
+function inspect(useDoubleQuotes) {
+var escapedString = this.replace(/[\x00-\x1f\\]/g, function(character) {
+if (character in String.specialChar) {
+return String.specialChar[character];
+}
+return '\\u00' + character.charCodeAt().toPaddedString(2, 16);
+});
+if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
+return "'" + escapedString.replace(/'/g, '\\\'') + "'";
+}
+function toJSON() {
+return this.inspect(true);
+}
+function unfilterJSON(filter) {
+return this.replace(filter || Prototype.JSONFilter, '$1');
+}
+function isJSON() {
+var str = this;
+if (str.blank()) return false;
+str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
+return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
+}
+function evalJSON(sanitize) {
+var json = this.unfilterJSON();
+try {
+if (!sanitize || json.isJSON()) return eval('(' + json + ')');
+} catch (e) { }
+throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
+}
+function include(pattern) {
+return this.indexOf(pattern) > -1;
+}
+function startsWith(pattern) {
+return this.indexOf(pattern) === 0;
+}
+function endsWith(pattern) {
+var d = this.length - pattern.length;
+return d >= 0 && this.lastIndexOf(pattern) === d;
+}
+function empty() {
+return this == '';
+}
+function blank() {
+return /^\s*$/.test(this);
+}
+function interpolate(object, pattern) {
+return new Template(this, pattern).evaluate(object);
+}
+return {
+gsub:           gsub,
+sub:            sub,
+scan:           scan,
+truncate:       truncate,
+strip:          String.prototype.trim ? String.prototype.trim : strip,
+stripTags:      stripTags,
+stripScripts:   stripScripts,
+extractScripts: extractScripts,
+evalScripts:    evalScripts,
+escapeHTML:     escapeHTML,
+unescapeHTML:   unescapeHTML,
+toQueryParams:  toQueryParams,
+parseQuery:     toQueryParams,
+toArray:        toArray,
+succ:           succ,
+times:          times,
+camelize:       camelize,
+capitalize:     capitalize,
+underscore:     underscore,
+dasherize:      dasherize,
+inspect:        inspect,
+toJSON:         toJSON,
+unfilterJSON:   unfilterJSON,
+isJSON:         isJSON,
+evalJSON:       evalJSON,
+include:        include,
+startsWith:     startsWith,
+endsWith:       endsWith,
+empty:          empty,
+blank:          blank,
+interpolate:    interpolate
+};
+})());
+var Template = Class.create({
+initialize: function(template, pattern) {
+this.template = template.toString();
+this.pattern = pattern || Template.Pattern;
+},
+evaluate: function(object) {
+if (object && Object.isFunction(object.toTemplateReplacements))
+object = object.toTemplateReplacements();
+return this.template.gsub(this.pattern, function(match) {
+if (object == null) return (match[1] + '');
+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].replace(/\\\\]/g, ']') : 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 = (function() {
+function each(iterator, context) {
+var index = 0;
+try {
+this._each(function(value) {
+iterator.call(context, value, index++);
+});
+} catch (e) {
+if (e != $break) throw e;
+}
+return this;
+}
+function eachSlice(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);
+}
+function all(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;
+}
+function any(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;
+}
+function collect(iterator, context) {
+iterator = iterator || Prototype.K;
+var results = [];
+this.each(function(value, index) {
+results.push(iterator.call(context, value, index));
+});
+return results;
+}
+function detect(iterator, context) {
+var result;
+this.each(function(value, index) {
+if (iterator.call(context, value, index)) {
+result = value;
+throw $break;
+}
+});
+return result;
+}
+function findAll(iterator, context) {
+var results = [];
+this.each(function(value, index) {
+if (iterator.call(context, value, index))
+results.push(value);
+});
+return results;
+}
+function grep(filter, iterator, context) {
+iterator = iterator || Prototype.K;
+var results = [];
+if (Object.isString(filter))
+filter = new RegExp(RegExp.escape(filter));
+this.each(function(value, index) {
+if (filter.match(value))
+results.push(iterator.call(context, value, index));
+});
+return results;
+}
+function include(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;
+}
+function inGroupsOf(number, fillWith) {
+fillWith = Object.isUndefined(fillWith) ? null : fillWith;
+return this.eachSlice(number, function(slice) {
+while(slice.length < number) slice.push(fillWith);
+return slice;
+});
+}
+function inject(memo, iterator, context) {
+this.each(function(value, index) {
+memo = iterator.call(context, memo, value, index);
+});
+return memo;
+}
+function invoke(method) {
+var args = $A(arguments).slice(1);
+return this.map(function(value) {
+return value[method].apply(value, args);
+});
+}
+function max(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;
+}
+function min(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;
+}
+function partition(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];
+}
+function pluck(property) {
+var results = [];
+this.each(function(value) {
+results.push(value[property]);
+});
+return results;
+}
+function reject(iterator, context) {
+var results = [];
+this.each(function(value, index) {
+if (!iterator.call(context, value, index))
+results.push(value);
+});
+return results;
+}
+function sortBy(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');
+}
+function toArray() {
+return this.map();
+}
+function zip() {
+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));
+});
+}
+function size() {
+return this.toArray().length;
+}
+function inspect() {
+return '#<Enumerable:' + this.toArray().inspect() + '>';
+}
+return {
+each:       each,
+eachSlice:  eachSlice,
+all:        all,
+every:      all,
+any:        any,
+some:       any,
+collect:    collect,
+map:        collect,
+detect:     detect,
+findAll:    findAll,
+select:     findAll,
+filter:     findAll,
+grep:       grep,
+include:    include,
+member:     include,
+inGroupsOf: inGroupsOf,
+inject:     inject,
+invoke:     invoke,
+max:        max,
+min:        min,
+partition:  partition,
+pluck:      pluck,
+reject:     reject,
+sortBy:     sortBy,
+toArray:    toArray,
+entries:    toArray,
+zip:        zip,
+size:       size,
+inspect:    inspect,
+find:       detect
+};
+})();
+function $A(iterable) {
+if (!iterable) return [];
+if ('toArray' in Object(iterable)) return iterable.toArray();
+var length = iterable.length || 0, results = new Array(length);
+while (length--) results[length] = iterable[length];
+return results;
+}
+function $w(string) {
+if (!Object.isString(string)) return [];
+string = string.strip();
+return string ? string.split(/\s+/) : [];
+}
+Array.from = $A;
+(function() {
+var arrayProto = Array.prototype,
+slice = arrayProto.slice,
+_each = arrayProto.forEach; // use native browser JS 1.6 implementation if available
+function each(iterator) {
+for (var i = 0, length = this.length; i < length; i++)
+iterator(this[i]);
+}
+if (!_each) _each = each;
+function clear() {
+this.length = 0;
+return this;
+}
+function first() {
+return this[0];
+}
+function last() {
+return this[this.length - 1];
+}
+function compact() {
+return this.select(function(value) {
+return value != null;
+});
+}
+function flatten() {
+return this.inject([], function(array, value) {
+if (Object.isArray(value))
+return array.concat(value.flatten());
+array.push(value);
+return array;
+});
+}
+function without() {
+var values = slice.call(arguments, 0);
+return this.select(function(value) {
+return !values.include(value);
+});
+}
+function reverse(inline) {
+return (inline !== false ? this : this.toArray())._reverse();
+}
+function uniq(sorted) {
+return this.inject([], function(array, value, index) {
+if (0 == index || (sorted ? array.last() != value : !array.include(value)))
+array.push(value);
+return array;
+});
+}
+function intersect(array) {
+return this.uniq().findAll(function(item) {
+return array.detect(function(value) { return item === value });
+});
+}
+function clone() {
+return slice.call(this, 0);
+}
+function size() {
+return this.length;
+}
+function inspect() {
+return '[' + this.map(Object.inspect).join(', ') + ']';
+}
+function toJSON() {
+var results = [];
+this.each(function(object) {
+var value = Object.toJSON(object);
+if (!Object.isUndefined(value)) results.push(value);
+});
+return '[' + results.join(', ') + ']';
+}
+function indexOf(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;
+}
+function lastIndexOf(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;
+}
+function concat() {
+var array = slice.call(this, 0), item;
+for (var i = 0, length = arguments.length; i < length; i++) {
+item = arguments[i];
+if (Object.isArray(item) && !('callee' in item)) {
+for (var j = 0, arrayLength = item.length; j < arrayLength; j++)
+array.push(item[j]);
+} else {
+array.push(item);
+}
+}
+return array;
+}
+Object.extend(arrayProto, Enumerable);
+if (!arrayProto._reverse)
+arrayProto._reverse = arrayProto.reverse;
+Object.extend(arrayProto, {
+_each:     _each,
+clear:     clear,
+first:     first,
+last:      last,
+compact:   compact,
+flatten:   flatten,
+without:   without,
+reverse:   reverse,
+uniq:      uniq,
+intersect: intersect,
+clone:     clone,
+toArray:   clone,
+size:      size,
+inspect:   inspect,
+toJSON:    toJSON
+});
+var CONCAT_ARGUMENTS_BUGGY = (function() {
+return [].concat(arguments)[0][0] !== 1;
+})(1,2)
+if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat;
+if (!arrayProto.indexOf) arrayProto.indexOf = indexOf;
+if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf;
+})();
+function $H(object) {
+return new Hash(object);
+};
+var Hash = Class.create(Enumerable, (function() {
+function initialize(object) {
+this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
+}
+function _each(iterator) {
+for (var key in this._object) {
+var value = this._object[key], pair = [key, value];
+pair.key = key;
+pair.value = value;
+iterator(pair);
+}
+}
+function set(key, value) {
+return this._object[key] = value;
+}
+function get(key) {
+if (this._object[key] !== Object.prototype[key])
+return this._object[key];
+}
+function unset(key) {
+var value = this._object[key];
+delete this._object[key];
+return value;
+}
+function toObject() {
+return Object.clone(this._object);
+}
+function keys() {
+return this.pluck('key');
+}
+function values() {
+return this.pluck('value');
+}
+function index(value) {
+var match = this.detect(function(pair) {
+return pair.value === value;
+});
+return match && match.key;
+}
+function merge(object) {
+return this.clone().update(object);
+}
+function update(object) {
+return new Hash(object).inject(this, function(result, pair) {
+result.set(pair.key, pair.value);
+return result;
+});
+}
+function toQueryPair(key, value) {
+if (Object.isUndefined(value)) return key;
+return key + '=' + encodeURIComponent(String.interpret(value));
+}
+function toQueryString() {
+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('&');
+}
+function inspect() {
+return '#<Hash:{' + this.map(function(pair) {
+return pair.map(Object.inspect).join(': ');
+}).join(', ') + '}>';
+}
+function toJSON() {
+return Object.toJSON(this.toObject());
+}
+function clone() {
+return new Hash(this);
+}
+return {
+initialize:             initialize,
+_each:                  _each,
+set:                    set,
+get:                    get,
+unset:                  unset,
+toObject:               toObject,
+toTemplateReplacements: toObject,
+keys:                   keys,
+values:                 values,
+index:                  index,
+merge:                  merge,
+update:                 update,
+toQueryString:          toQueryString,
+inspect:                inspect,
+toJSON:                 toJSON,
+clone:                  clone
+};
+})());
+Hash.from = $H;
+Object.extend(Number.prototype, (function() {
+function toColorPart() {
+return this.toPaddedString(2, 16);
+}
+function succ() {
+return this + 1;
+}
+function times(iterator, context) {
+$R(0, this, true).each(iterator, context);
+return this;
+}
+function toPaddedString(length, radix) {
+var string = this.toString(radix || 10);
+return '0'.times(length - string.length) + string;
+}
+function toJSON() {
+return isFinite(this) ? this.toString() : 'null';
+}
+function abs() {
+return Math.abs(this);
+}
+function round() {
+return Math.round(this);
+}
+function ceil() {
+return Math.ceil(this);
+}
+function floor() {
+return Math.floor(this);
+}
+return {
+toColorPart:    toColorPart,
+succ:           succ,
+times:          times,
+toPaddedString: toPaddedString,
+toJSON:         toJSON,
+abs:            abs,
+round:          round,
+ceil:           ceil,
+floor:          floor
+};
+})());
+function $R(start, end, exclusive) {
+return new ObjectRange(start, end, exclusive);
+}
+var ObjectRange = Class.create(Enumerable, (function() {
+function initialize(start, end, exclusive) {
+this.start = start;
+this.end = end;
+this.exclusive = exclusive;
+}
+function _each(iterator) {
+var value = this.start;
+while (this.include(value)) {
+iterator(value);
+value = value.succ();
+}
+}
+function include(value) {
+if (value < this.start)
+return false;
+if (this.exclusive)
+return value < this.end;
+return value <= this.end;
+}
+return {
+initialize: initialize,
+_each:      _each,
+include:    include
+};
+})());
+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)) {
+params['_method'] = this.method;
+this.method = 'post';
+}
+this.parameters = params;
+if (params = Object.toQueryString(params)) {
+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';
+}
+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') {
+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) {
+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(global) {
+var SETATTRIBUTE_IGNORES_NAME = (function(){
+var elForm = document.createElement("form");
+var elInput = document.createElement("input");
+var root = document.documentElement;
+elInput.setAttribute("name", "test");
+elForm.appendChild(elInput);
+root.appendChild(elForm);
+var isBuggy = elForm.elements
+? (typeof elForm.elements.test == "undefined")
+: null;
+root.removeChild(elForm);
+elForm = elInput = null;
+return isBuggy;
+})();
+var element = global.Element;
+global.Element = function(tagName, attributes) {
+attributes = attributes || { };
+tagName = tagName.toLowerCase();
+var cache = Element.cache;
+if (SETATTRIBUTE_IGNORES_NAME && 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(global.Element, element || { });
+if (element) global.Element.prototype = element.prototype;
+})(this);
+Element.cache = { };
+Element.idCounter = 1;
+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(){
+var SELECT_ELEMENT_INNERHTML_BUGGY = (function(){
+var el = document.createElement("select"),
+isBuggy = true;
+el.innerHTML = "<option value=\"test\">test</option>";
+if (el.options && el.options[0]) {
+isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION";
+}
+el = null;
+return isBuggy;
+})();
+var TABLE_ELEMENT_INNERHTML_BUGGY = (function(){
+try {
+var el = document.createElement("table");
+if (el && el.tBodies) {
+el.innerHTML = "<tbody><tr><td>test</td></tr></tbody>";
+var isBuggy = typeof el.tBodies[0] == "undefined";
+el = null;
+return isBuggy;
+}
+} catch (e) {
+return true;
+}
+})();
+var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function () {
+var s = document.createElement("script"),
+isBuggy = false;
+try {
+s.appendChild(document.createTextNode(""));
+isBuggy = !s.firstChild ||
+s.firstChild && s.firstChild.nodeType !== 3;
+} catch (e) {
+isBuggy = true;
+}
+s = null;
+return isBuggy;
+})();
+function update(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 === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) {
+element.text = content;
+return element;
+}
+if (SELECT_ELEMENT_INNERHTML_BUGGY || TABLE_ELEMENT_INNERHTML_BUGGY) {
+if (tagName in Element._insertionTranslations.tags) {
+while (element.firstChild) {
+element.removeChild(element.firstChild);
+}
+Element._getContentFromAnonymousElement(tagName, content.stripScripts())
+.each(function(node) {
+element.appendChild(node)
+});
+}
+else {
+element.innerHTML = content.stripScripts();
+}
+}
+else {
+element.innerHTML = content.stripScripts();
+}
+content.evalScripts.bind(content).defer();
+return element;
+}
+return update;
+})(),
+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(element, 'parentNode');
+},
+descendants: function(element) {
+return Element.select(element, "*");
+},
+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(element, 'previousSibling');
+},
+nextSiblings: function(element) {
+return Element.recursivelyCollect(element, 'nextSibling');
+},
+siblings: function(element) {
+element = $(element);
+return Element.previousSiblings(element).reverse()
+.concat(Element.nextSiblings(element));
+},
+match: function(element, selector) {
+if (Object.isString(selector))
+selector = new Selector(selector);
+return selector.match($(element));
+},
+up: function(element, expression, index) {
+element = $(element);
+if (arguments.length == 1) return $(element.parentNode);
+var ancestors = Element.ancestors(element);
+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(element);
+return Object.isNumber(expression) ? Element.descendants(element)[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(element);
+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(element);
+return Object.isNumber(expression) ? nextSiblings[expression] :
+Selector.findElement(nextSiblings, expression, index);
+},
+select: function(element) {
+var args = Array.prototype.slice.call(arguments, 1);
+return Selector.findChildElements(element, args);
+},
+adjacent: function(element) {
+var args = Array.prototype.slice.call(arguments, 1);
+return Selector.findChildElements(element.parentNode, args).without(element);
+},
+identify: function(element) {
+element = $(element);
+var id = Element.readAttribute(element, 'id');
+if (id) return id;
+do { id = 'anonymous_element_' + Element.idCounter++ } while ($(id));
+Element.writeAttribute(element, '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(element).height;
+},
+getWidth: function(element) {
+return Element.getDimensions(element).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(element, 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(element, className) ?
+'removeClassName' : 'addClassName'](element, className);
+},
+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(element);
+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(element, 'display');
+if (display != 'none' && display != null) // Safari bug
+return {width: element.offsetWidth, height: element.offsetHeight};
+var els = element.style;
+var originalVisibility = els.visibility;
+var originalPosition = els.position;
+var originalDisplay = els.display;
+els.visibility = 'hidden';
+if (originalPosition != 'fixed') // Switching fixed to absolute causes issues in Safari
+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';
+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(element, 'position') == 'absolute') return element;
+var offsets = Element.positionedOffset(element);
+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(element, 'position') == 'relative') return element;
+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)
+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;
+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] || { });
+source = $(source);
+var p = Element.viewportOffset(source);
+element = $(element);
+var delta = [0, 0];
+var parent = null;
+if (Element.getStyle(element, 'position') == 'absolute') {
+parent = Element.getOffsetParent(element);
+delta = Element.viewportOffset(parent);
+}
+if (parent == document.body) {
+delta[0] -= document.body.offsetLeft;
+delta[1] -= document.body.offsetTop;
+}
+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;
+}
+};
+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':
+if (!Element.visible(element)) return null;
+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) {
+Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
+function(proceed, element) {
+element = $(element);
+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);
+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 = (function(){
+var classProp = 'className';
+var forProp = 'for';
+var el = document.createElement('div');
+el.setAttribute(classProp, 'x');
+if (el.className !== 'x') {
+el.setAttribute('class', 'x');
+if (el.className === 'x') {
+classProp = 'class';
+}
+}
+el = null;
+el = document.createElement('label');
+el.setAttribute(forProp, 'x');
+if (el.htmlFor !== 'x') {
+el.setAttribute('htmlFor', 'x');
+if (el.htmlFor === 'x') {
+forProp = 'htmlFor';
+}
+}
+el = null;
+return {
+read: {
+names: {
+'class':      classProp,
+'className':  classProp,
+'for':        forProp,
+'htmlFor':    forProp
+},
+values: {
+_getAttr: function(element, attribute) {
+return element.getAttribute(attribute);
+},
+_getAttr2: function(element, attribute) {
+return element.getAttribute(attribute, 2);
+},
+_getAttrNode: function(element, attribute) {
+var node = element.getAttributeNode(attribute);
+return node ? node.value : "";
+},
+_getEv: (function(){
+var el = document.createElement('div');
+el.onclick = Prototype.emptyFunction;
+var value = el.getAttribute('onclick');
+var f;
+if (String(value).indexOf('{') > -1) {
+f = function(element, attribute) {
+attribute = element.getAttribute(attribute);
+if (!attribute) return null;
+attribute = attribute.toString();
+attribute = attribute.split('{')[1];
+attribute = attribute.split('}')[0];
+return attribute.strip();
+};
+}
+else if (value === '') {
+f = function(element, attribute) {
+attribute = element.getAttribute(attribute);
+if (!attribute) return null;
+return attribute.strip();
+};
+}
+el = null;
+return f;
+})(),
+_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._getAttr2,
+src:         v._getAttr2,
+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);
+if (Prototype.BrowserFeatures.ElementExtensions) {
+(function() {
+function _descendants(element) {
+var nodes = element.getElementsByTagName('*'), results = [];
+for (var i = 0, node; node = nodes[i]; i++)
+if (node.tagName !== "!") // Filter out comment nodes.
+results.push(node);
+return results;
+}
+Element.Methods.down = function(element, expression, index) {
+element = $(element);
+if (arguments.length == 1) return element.firstDescendant();
+return Object.isNumber(expression) ? _descendants(element)[expression] :
+Element.select(element, expression)[index || 0];
+}
+})();
+}
+}
+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;
+};
+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 ('outerHTML' in document.documentElement) {
+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() {
+var tags = Element._insertionTranslations.tags;
+Object.extend(tags, {
+THEAD: tags.TBODY,
+TFOOT: tags.TBODY,
+TH:    tags.TD
+});
+})();
+Element.Methods.Simulated = {
+hasAttribute: function(element, attribute) {
+attribute = Element._attributeTranslations.has[attribute] || attribute;
+var node = $(element).getAttributeNode(attribute);
+return !!(node && node.specified);
+}
+};
+Element.Methods.ByTag = { };
+Object.extend(Element, Element.Methods);
+(function(div) {
+if (!Prototype.BrowserFeatures.ElementExtensions && div['__proto__']) {
+window.HTMLElement = { };
+window.HTMLElement.prototype = div['__proto__'];
+Prototype.BrowserFeatures.ElementExtensions = true;
+}
+div = null;
+})(document.createElement('div'))
+Element.extend = (function() {
+function checkDeficiency(tagName) {
+if (typeof window.Element != 'undefined') {
+var proto = window.Element.prototype;
+if (proto) {
+var id = '_' + (Math.random()+'').slice(2);
+var el = document.createElement(tagName);
+proto[id] = 'x';
+var isBuggy = (el[id] !== 'x');
+delete proto[id];
+el = null;
+return isBuggy;
+}
+}
+return false;
+}
+function extendElementWith(element, methods) {
+for (var property in methods) {
+var value = methods[property];
+if (Object.isFunction(value) && !(property in element))
+element[property] = value.methodize();
+}
+}
+var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object');
+if (Prototype.BrowserFeatures.SpecificElementExtensions) {
+if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY) {
+return function(element) {
+if (element && typeof element._extendedByPrototype == 'undefined') {
+var t = element.tagName;
+if (t && (/^(?:object|applet|embed)$/i.test(t))) {
+extendElementWith(element, Element.Methods);
+extendElementWith(element, Element.Methods.Simulated);
+extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]);
+}
+}
+return element;
+}
+}
+return Prototype.K;
+}
+var Methods = { }, ByTag = Element.Methods.ByTag;
+var extend = Object.extend(function(element) {
+if (!element || typeof element._extendedByPrototype != 'undefined' ||
+element.nodeType != 1 || element == window) return element;
+var methods = Object.clone(Methods),
+tagName = element.tagName.toUpperCase();
+if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
+extendElementWith(element, methods);
+element._extendedByPrototype = Prototype.emptyFunction;
+return element;
+}, {
+refresh: function() {
+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];
+var element = document.createElement(tagName);
+var proto = element['__proto__'] || element.constructor.prototype;
+element = null;
+return proto;
+}
+var elementPrototype = window.HTMLElement ? HTMLElement.prototype :
+Element.prototype;
+if (F.ElementExtensions) {
+copy(Element.Methods, elementPrototype);
+copy(Element.Methods.Simulated, elementPrototype, 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() {
+return { width: this.getWidth(), height: this.getHeight() };
+},
+getScrollOffsets: function() {
+return Element._returnOffset(
+window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
+window.pageYOffset || document.documentElement.scrollTop  || document.body.scrollTop);
+}
+};
+(function(viewport) {
+var B = Prototype.Browser, doc = document, element, property = {};
+function getRootElement() {
+if (B.WebKit && !doc.evaluate)
+return document;
+if (B.Opera && window.parseFloat(window.opera.version()) < 9.5)
+return document.body;
+return document.documentElement;
+}
+function define(D) {
+if (!element) element = getRootElement();
+property[D] = 'client' + D;
+viewport['get' + D] = function() { return element[property[D]] };
+return viewport['get' + D]();
+}
+viewport.getWidth  = define.curry('Width');
+viewport.getHeight = define.curry('Height');
+})(document.viewport);
+Element.Storage = {
+UID: 1
+};
+Element.addMethods({
+getStorage: function(element) {
+if (!(element = $(element))) return;
+var uid;
+if (element === window) {
+uid = 0;
+} else {
+if (typeof element._prototypeUID === "undefined")
+element._prototypeUID = [Element.Storage.UID++];
+uid = element._prototypeUID[0];
+}
+if (!Element.Storage[uid])
+Element.Storage[uid] = $H();
+return Element.Storage[uid];
+},
+store: function(element, key, value) {
+if (!(element = $(element))) return;
+if (arguments.length === 2) {
+Element.getStorage(element).update(key);
+} else {
+Element.getStorage(element).set(key, value);
+}
+return element;
+},
+retrieve: function(element, key, defaultValue) {
+if (!(element = $(element))) return;
+var hash = Element.getStorage(element), value = hash.get(key);
+if (Object.isUndefined(value)) {
+hash.set(key, defaultValue);
+value = defaultValue;
+}
+return value;
+},
+clone: function(element, deep) {
+if (!(element = $(element))) return;
+var clone = element.cloneNode(deep);
+clone._prototypeUID = void 0;
+if (deep) {
+var descendants = Element.select(clone, '*'),
+i = descendants.length;
+while (i--) {
+descendants[i]._prototypeUID = void 0;
+}
+}
+return Element.extend(clone);
+}
+});
+/* 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() {
+var IS_DESCENDANT_SELECTOR_BUGGY = (function(){
+var isBuggy = false;
+if (document.evaluate && window.XPathResult) {
+var el = document.createElement('div');
+el.innerHTML = '<ul><li></li></ul><div><ul><li></li></ul></div>';
+var xpath = ".//*[local-name()='ul' or local-name()='UL']" +
+"//*[local-name()='li' or local-name()='LI']";
+var result = document.evaluate(xpath, el, null,
+XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+isBuggy = (result.snapshotLength !== 2);
+el = null;
+}
+return isBuggy;
+})();
+return function() {
+if (!Prototype.BrowserFeatures.XPath) return false;
+var e = this.expression;
+if (Prototype.Browser.WebKit &&
+(e.include("-of-type") || e.include(":empty")))
+return false;
+if ((/(\[[\w-]*?:|:checked)/).test(e))
+return false;
+if (IS_DESCENDANT_SELECTOR_BUGGY) return false;
+return true;
+}
+})(),
+shouldUseSelectorsAPI: function() {
+if (!Prototype.BrowserFeatures.SelectorsAPI) return false;
+if (Selector.CASE_INSENSITIVE_CLASS_NAMES) return false;
+if (!Selector._div) Selector._div = new Element('div');
+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, len = ps.length, name;
+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 = 0; i<len; i++) {
+p = ps[i].re;
+name = ps[i].name;
+if (m = e.match(p)) {
+this.matcher.push(Object.isFunction(c[name]) ? c[name](m) :
+new Template(c[name]).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, len = ps.length, name;
+if (Selector._cache[e]) {
+this.xpath = Selector._cache[e]; return;
+}
+this.matcher = ['.//*'];
+while (e && le != e && (/\S/).test(e)) {
+le = e;
+for (var i = 0; i<len; i++) {
+name = ps[i].name;
+if (m = e.match(ps[i].re)) {
+this.matcher.push(Object.isFunction(x[name]) ? x[name](m) :
+new Template(x[name]).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':
+if (root !== document) {
+var oldId = root.id, id = $(root).identify();
+id = id.replace(/([\.:])/g, "\\$1");
+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, len = ps.length, name;
+while (e && le !== e && (/\S/).test(e)) {
+le = e;
+for (var i = 0; i<len; i++) {
+p = ps[i].re;
+name = ps[i].name;
+if (m = e.match(p)) {
+if (as[name]) {
+this.tokens.push([name, Object.clone(m)]);
+e = e.replace(m[0], '');
+} else {
+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() + ">";
+}
+});
+if (Prototype.BrowserFeatures.SelectorsAPI &&
+document.compatMode === 'BackCompat') {
+Selector.CASE_INSENSITIVE_CLASS_NAMES = (function(){
+var div = document.createElement('div'),
+span = document.createElement('span');
+div.id = "prototype_test_id";
+span.className = 'Test';
+div.appendChild(span);
+var isIgnored = (div.querySelector('#prototype_test_id .test') !== null);
+div = span = null;
+return isIgnored;
+})();
+}
+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, len = p.length, name;
+var exclusion = [];
+while (e && le != e && (/\S/).test(e)) {
+le = e;
+for (var i = 0; i<len; i++) {
+name = p[i].name
+if (m = e.match(p[i].re)) {
+v = Object.isFunction(x[name]) ? x[name](m) : new Template(x[name]).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+)$/)) // digit only
+return '[' + fragment + "= " + mm[1] + ']';
+if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+if (mm[1] == "-") mm[1] = -1;
+var a = mm[1] ? Number(mm[1]) : 1;
+var b = mm[2] ? Number(mm[2]) : 0;
+predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
+"((#{fragment} - #{b}) div #{a} >= 0)]";
+return new Template(predicate).evaluate({
+fragment: fragment, a: a, b: b });
+}
+}
+}
+},
+criteria: {
+tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
+className:    'n = h.className(n, r, "#{1}", c);    c = false;',
+id:           'n = h.id(n, r, "#{1}", c);           c = false;',
+attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
+attr: function(m) {
+m[3] = (m[5] || m[6]);
+return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
+},
+pseudo: function(m) {
+if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
+return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
+},
+descendant:   'c = "descendant";',
+child:        'c = "child";',
+adjacent:     'c = "adjacent";',
+laterSibling: 'c = "laterSibling";'
+},
+patterns: [
+{ name: 'laterSibling', re: /^\s*~\s*/ },
+{ name: 'child',        re: /^\s*>\s*/ },
+{ name: 'adjacent',     re: /^\s*\+\s*/ },
+{ name: 'descendant',   re: /^\s/ },
+{ name: 'tagName',      re: /^\s*(\*|[\w\-]+)(\b|$)?/ },
+{ name: 'id',           re: /^#([\w\-\*]+)(\b|$)/ },
+{ name: 'className',    re: /^\.([\w\-\*]+)(\b|$)/ },
+{ name: 'pseudo',       re: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/ },
+{ name: 'attrPresence', re: /^\[((?:[\w-]+:)?[\w-]+)\]/ },
+{ name: 'attr',         re: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/ }
+],
+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: {
+concat: function(a, b) {
+for (var i = 0, node; node = b[i]; i++)
+a.push(node);
+return a;
+},
+mark: function(nodes) {
+var _true = Prototype.emptyFunction;
+for (var i = 0, node; node = nodes[i]; i++)
+node._countedByPrototype = _true;
+return nodes;
+},
+unmark: (function(){
+var PROPERTIES_ATTRIBUTES_MAP = (function(){
+var el = document.createElement('div'),
+isBuggy = false,
+propName = '_countedByPrototype',
+value = 'x'
+el[propName] = value;
+isBuggy = (el.getAttribute(propName) === value);
+el = null;
+return isBuggy;
+})();
+return PROPERTIES_ATTRIBUTES_MAP ?
+function(nodes) {
+for (var i = 0, node; node = nodes[i]; i++)
+node.removeAttribute('_countedByPrototype');
+return nodes;
+} :
+function(nodes) {
+for (var i = 0, node; node = nodes[i]; i++)
+node._countedByPrototype = void 0;
+return nodes;
+}
+})(),
+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++;
+}
+},
+unique: function(nodes) {
+if (nodes.length == 0) return nodes;
+var results = [], n;
+for (var i = 0, l = nodes.length; i < l; i++)
+if (typeof (n = nodes[i])._countedByPrototype == 'undefined') {
+n._countedByPrototype = Prototype.emptyFunction;
+results.push(Element.extend(n));
+}
+return Selector.handlers.unmark(results);
+},
+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;
+},
+tagName: function(nodes, root, tagName, combinator) {
+var uTagName = tagName.toUpperCase();
+var results = [], h = Selector.handlers;
+if (nodes) {
+if (combinator) {
+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 (root == document) {
+if (!targetNode) return [];
+if (!nodes) return [targetNode];
+} else {
+if (!root.sourceIndex || root.sourceIndex < 1) {
+var nodes = root.getElementsByTagName('*');
+for (var j = 0, node; node = nodes[j]; j++) {
+if (node.id === id) return [node];
+}
+}
+}
+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);
+},
+getIndices: function(a, b, total) {
+if (a == 0) return b > 0 ? [b] : [];
+return $R(1, total).inject([], function(memo, i) {
+if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
+return memo;
+});
+},
+nth: function(nodes, formula, root, reverse, ofType) {
+if (nodes.length == 0) return [];
+if (formula == 'even') formula = '2n+0';
+if (formula == 'odd')  formula = '2n+1';
+var h = Selector.handlers, results = [], indexed = [], m;
+h.mark(nodes);
+for (var i = 0, node; node = nodes[i]; i++) {
+if (!node.parentNode._countedByPrototype) {
+h.index(node.parentNode, reverse, ofType);
+indexed.push(node.parentNode);
+}
+}
+if (formula.match(/^\d+$/)) { // 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++) {
+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 + ' ').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 = $$(expression), h = Selector.handlers;
+h.mark(matches);
+for (var i = 0, results = [], element; element = elements[i]; i++)
+if (element._countedByPrototype) results.push(element);
+h.unmark(matches);
+return results;
+},
+findElement: function(elements, expression, index) {
+if (Object.isNumber(expression)) {
+index = expression; expression = false;
+}
+return Selector.matchElements(elements, expression || '*')[index || 0];
+},
+findChildElements: function(element, expressions) {
+expressions = Selector.split(expressions.join(','));
+var results = [], h = Selector.handlers;
+for (var i = 0, l = expressions.length, selector; i < l; i++) {
+selector = new Selector(expressions[i].strip());
+h.concat(results, selector.findElements(element));
+}
+return (l > 1) ? h.unique(results) : results;
+}
+});
+if (Prototype.Browser.IE) {
+Object.extend(Selector.handlers, {
+concat: function(a, b) {
+for (var i = 0, node; node = b[i]; i++)
+if (node.tagName !== "!") a.push(node);
+return a;
+}
+});
+}
+function $$() {
+return Selector.findChildElements(document, $A(arguments));
+}
+var Form = {
+reset: function(form) {
+form = $(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) {
+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) {
+var elements = $(form).getElementsByTagName('*'),
+element,
+arr = [ ],
+serializers = Form.Element.Serializers;
+for (var i = 0; element = elements[i]; i++) {
+arr.push(element);
+}
+return arr.inject([], function(elements, child) {
+if (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 = $(form).getElements().findAll(function(element) {
+return 'hidden' != element.type && !element.disabled;
+});
+var firstByIndex = elements.findAll(function(element) {
+return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
+}).sortBy(function(element) { return element.tabIndex }).first();
+return firstByIndex ? firstByIndex : elements.find(function(element) {
+return /^(?:input|select|textarea)$/i.test(element.tagName);
+});
+},
+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 = $(element);
+try {
+element.focus();
+if (element.select && (element.tagName.toLowerCase() != 'input' ||
+!(/^(?:button|reset|submit)$/i.test(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 $F = Form.Element.Methods.getValue;
+/*--------------------------------------------------------------------------*/
+Form.Element.Serializers = {
+input: function(element, value) {
+switch (element.type.toLowerCase()) {
+case 'checkbox':
+case 'radio':
+return Form.Element.Serializers.inputSelector(element, value);
+default:
+return Form.Element.Serializers.textarea(element, value);
+}
+},
+inputSelector: function(element, value) {
+if (Object.isUndefined(value)) return element.checked ? element.value : null;
+else element.checked = !!value;
+},
+textarea: function(element, value) {
+if (Object.isUndefined(value)) return element.value;
+else element.value = value;
+},
+select: function(element, value) {
+if (Object.isUndefined(value))
+return this[element.type == 'select-one' ?
+'selectOne' : 'selectMany'](element);
+else {
+var opt, currentValue, single = !Object.isArray(value);
+for (var i = 0, length = element.length; i < length; i++) {
+opt = element.options[i];
+currentValue = this.optionValue(opt);
+if (single) {
+if (currentValue == value) {
+opt.selected = true;
+return;
+}
+}
+else opt.selected = value.include(currentValue);
+}
+}
+},
+selectOne: function(element) {
+var index = element.selectedIndex;
+return index >= 0 ? this.optionValue(element.options[index]) : null;
+},
+selectMany: function(element) {
+var values, length = element.length;
+if (!length) return null;
+for (var i = 0, values = []; i < length; i++) {
+var opt = element.options[i];
+if (opt.selected) values.push(this.optionValue(opt));
+}
+return values;
+},
+optionValue: function(opt) {
+return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
+}
+};
+/*--------------------------------------------------------------------------*/
+Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
+initialize: function($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);
+}
+});
+(function() {
+var 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: {}
+};
+var docEl = document.documentElement;
+var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl
+&& 'onmouseleave' in docEl;
+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);
+};
+}
+function isLeftClick(event)   { return _isButton(event, 0) }
+function isMiddleClick(event) { return _isButton(event, 1) }
+function isRightClick(event)  { return _isButton(event, 2) }
+function element(event) {
+event = Event.extend(event);
+var node = event.target, type = event.type,
+currentTarget = event.currentTarget;
+if (currentTarget && currentTarget.tagName) {
+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);
+}
+function findElement(event, expression) {
+var element = Event.element(event);
+if (!expression) return element;
+var elements = [element].concat(element.ancestors());
+return Selector.findElement(elements, expression, 0);
+}
+function pointer(event) {
+return { x: pointerX(event), y: pointerY(event) };
+}
+function pointerX(event) {
+var docElement = document.documentElement,
+body = document.body || { scrollLeft: 0 };
+return event.pageX || (event.clientX +
+(docElement.scrollLeft || body.scrollLeft) -
+(docElement.clientLeft || 0));
+}
+function pointerY(event) {
+var docElement = document.documentElement,
+body = document.body || { scrollTop: 0 };
+return  event.pageY || (event.clientY +
+(docElement.scrollTop || body.scrollTop) -
+(docElement.clientTop || 0));
+}
+function stop(event) {
+Event.extend(event);
+event.preventDefault();
+event.stopPropagation();
+event.stopped = true;
+}
+Event.Methods = {
+isLeftClick: isLeftClick,
+isMiddleClick: isMiddleClick,
+isRightClick: isRightClick,
+element: element,
+findElement: findElement,
+pointer: pointer,
+pointerX: pointerX,
+pointerY: pointerY,
+stop: stop
+};
+var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
+m[name] = Event.Methods[name].methodize();
+return m;
+});
+if (Prototype.Browser.IE) {
+function _relatedTarget(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);
+}
+Object.extend(methods, {
+stopPropagation: function() { this.cancelBubble = true },
+preventDefault:  function() { this.returnValue = false },
+inspect: function() { return '[object Event]' }
+});
+Event.extend = function(event, element) {
+if (!event) return false;
+if (event._extendedByPrototype) return event;
+event._extendedByPrototype = Prototype.emptyFunction;
+var pointer = Event.pointer(event);
+Object.extend(event, {
+target: event.srcElement || element,
+relatedTarget: _relatedTarget(event),
+pageX:  pointer.x,
+pageY:  pointer.y
+});
+return Object.extend(event, methods);
+};
+} else {
+Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
+Object.extend(Event.prototype, methods);
+Event.extend = Prototype.K;
+}
+function _createResponder(element, eventName, handler) {
+var registry = Element.retrieve(element, 'prototype_event_registry');
+if (Object.isUndefined(registry)) {
+CACHE.push(element);
+registry = Element.retrieve(element, 'prototype_event_registry', $H());
+}
+var respondersForEvent = registry.get(eventName);
+if (Object.isUndefined(respondersForEvent)) {
+respondersForEvent = [];
+registry.set(eventName, respondersForEvent);
+}
+if (respondersForEvent.pluck('handler').include(handler)) return false;
+var responder;
+if (eventName.include(":")) {
+responder = function(event) {
+if (Object.isUndefined(event.eventName))
+return false;
+if (event.eventName !== eventName)
+return false;
+Event.extend(event, element);
+handler.call(element, event);
+};
+} else {
+if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED &&
+(eventName === "mouseenter" || eventName === "mouseleave")) {
+if (eventName === "mouseenter" || eventName === "mouseleave") {
+responder = function(event) {
+Event.extend(event, element);
+var parent = event.relatedTarget;
+while (parent && parent !== element) {
+try { parent = parent.parentNode; }
+catch(e) { parent = element; }
+}
+if (parent === element) return;
+handler.call(element, event);
+};
+}
+} else {
+responder = function(event) {
+Event.extend(event, element);
+handler.call(element, event);
+};
+}
+}
+responder.handler = handler;
+respondersForEvent.push(responder);
+return responder;
+}
+function _destroyCache() {
+for (var i = 0, length = CACHE.length; i < length; i++) {
+Event.stopObserving(CACHE[i]);
+CACHE[i] = null;
+}
+}
+var CACHE = [];
+if (Prototype.Browser.IE)
+window.attachEvent('onunload', _destroyCache);
+if (Prototype.Browser.WebKit)
+window.addEventListener('unload', Prototype.emptyFunction, false);
+var _getDOMEventName = Prototype.K;
+if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
+_getDOMEventName = function(eventName) {
+var translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
+return eventName in translations ? translations[eventName] : eventName;
+};
+}
+function observe(element, eventName, handler) {
+element = $(element);
+var responder = _createResponder(element, eventName, handler);
+if (!responder) return element;
+if (eventName.include(':')) {
+if (element.addEventListener)
+element.addEventListener("dataavailable", responder, false);
+else {
+element.attachEvent("ondataavailable", responder);
+element.attachEvent("onfilterchange", responder);
+}
+} else {
+var actualEventName = _getDOMEventName(eventName);
+if (element.addEventListener)
+element.addEventListener(actualEventName, responder, false);
+else
+element.attachEvent("on" + actualEventName, responder);
+}
+return element;
+}
+function stopObserving(element, eventName, handler) {
+element = $(element);
+var registry = Element.retrieve(element, 'prototype_event_registry');
+if (Object.isUndefined(registry)) return element;
+if (eventName && !handler) {
+var responders = registry.get(eventName);
+if (Object.isUndefined(responders)) return element;
+responders.each( function(r) {
+Element.stopObserving(element, eventName, r.handler);
+});
+return element;
+} else if (!eventName) {
+registry.each( function(pair) {
+var eventName = pair.key, responders = pair.value;
+responders.each( function(r) {
+Element.stopObserving(element, eventName, r.handler);
+});
+});
+return element;
+}
+var responders = registry.get(eventName);
+if (!responders) return;
+var responder = responders.find( function(r) { return r.handler === handler; });
+if (!responder) return element;
+var actualEventName = _getDOMEventName(eventName);
+if (eventName.include(':')) {
+if (element.removeEventListener)
+element.removeEventListener("dataavailable", responder, false);
+else {
+element.detachEvent("ondataavailable", responder);
+element.detachEvent("onfilterchange",  responder);
+}
+} else {
+if (element.removeEventListener)
+element.removeEventListener(actualEventName, responder, false);
+else
+element.detachEvent('on' + actualEventName, responder);
+}
+registry.set(eventName, responders.without(responder));
+return element;
+}
+function fire(element, eventName, memo, bubble) {
+element = $(element);
+if (Object.isUndefined(bubble))
+bubble = true;
+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 = bubble ? 'ondataavailable' : 'onfilterchange';
+}
+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);
+Object.extend(Event, {
+fire:          fire,
+observe:       observe,
+stopObserving: stopObserving
+});
+Element.addMethods({
+fire:          fire,
+observe:       observe,
+stopObserving: stopObserving
+});
+Object.extend(document, {
+fire:          fire.methodize(),
+observe:       observe.methodize(),
+stopObserving: stopObserving.methodize(),
+loaded:        false
+});
+if (window.Event) Object.extend(window.Event, Event);
+else window.Event = Event;
+})();
+(function() {
+/* Support for the DOMContentLoaded event is based on work by Dan Webb,
+Matthias Miller, Dean Edwards, John Resig, and Diego Perini. */
+var timer;
+function fireContentLoadedEvent() {
+if (document.loaded) return;
+if (timer) window.clearTimeout(timer);
+document.loaded = true;
+document.fire('dom:loaded');
+}
+function checkReadyState() {
+if (document.readyState === 'complete') {
+document.stopObserving('readystatechange', checkReadyState);
+fireContentLoadedEvent();
+}
+}
+function pollDoScroll() {
+try { document.documentElement.doScroll('left'); }
+catch(e) {
+timer = pollDoScroll.defer();
+return;
+}
+fireContentLoadedEvent();
+}
+if (document.addEventListener) {
+document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false);
+} else {
+document.observe('readystatechange', checkReadyState);
+if (window == top)
+timer = pollDoScroll.defer();
+}
+Event.observe(window, 'load', fireContentLoadedEvent);
+})();
+Element.addMethods();
+/*------------------------------- 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');
+var Position = {
+includeScrollOffsets: false,
+prepare: function() {
+this.deltaX =  window.pageXOffset
+|| document.documentElement.scrollLeft
+|| document.body.scrollLeft
+|| 0;
+this.deltaY =  window.pageYOffset
+|| document.documentElement.scrollTop
+|| document.body.scrollTop
+|| 0;
+},
+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);
+},
+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;
+},
+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);
+/*--------------------------------------------------------------------------*/