+/* Prototype JavaScript framework, version 1.6.0.3
+ * (c) 2005-2008 Sam Stephenson
+ *
+ * Prototype is freely distributable under the terms of an MIT-style license.
+ * For details, see the Prototype web site: http://www.prototypejs.org/
+ *
+ *--------------------------------------------------------------------------*/
+
+var Prototype = {
+ Version: '1.6.0.3',
+
+ Browser: {
+ IE: !!(window.attachEvent &&
+ navigator.userAgent.indexOf('Opera') === -1),
+ Opera: navigator.userAgent.indexOf('Opera') > -1,
+ WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
+ Gecko: navigator.userAgent.indexOf('Gecko') > -1 &&
+ navigator.userAgent.indexOf('KHTML') === -1,
+ MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
+ },
+
+ BrowserFeatures: {
+ XPath: !!document.evaluate,
+ SelectorsAPI: !!document.querySelector,
+ ElementExtensions: !!window.HTMLElement,
+ SpecificElementExtensions:
+ document.createElement('div')['__proto__'] &&
+ document.createElement('div')['__proto__'] !==
+ document.createElement('form')['__proto__']
+ },
+
+ ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
+ JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
+
+ emptyFunction: function() { },
+ K: function(x) { return x }
+};
+
+if (Prototype.Browser.MobileSafari)
+ Prototype.BrowserFeatures.SpecificElementExtensions = false;
+
+
+/* Based on Alex Arnell's inheritance implementation. */
+var Class = {
+ create: function() {
+ var parent = null, properties = $A(arguments);
+ if (Object.isFunction(properties[0]))
+ parent = properties.shift();
+
+ function klass() {
+ this.initialize.apply(this, arguments);
+ }
+
+ Object.extend(klass, Class.Methods);
+ klass.superclass = parent;
+ klass.subclasses = [];
+
+ if (parent) {
+ var subclass = function() { };
+ subclass.prototype = parent.prototype;
+ klass.prototype = new subclass;
+ parent.subclasses.push(klass);
+ }
+
+ for (var i = 0; i < properties.length; i++)
+ klass.addMethods(properties[i]);
+
+ if (!klass.prototype.initialize)
+ klass.prototype.initialize = Prototype.emptyFunction;
+
+ klass.prototype.constructor = klass;
+
+ return klass;
+ }
+};
+
+Class.Methods = {
+ addMethods: function(source) {
+ var ancestor = this.superclass && this.superclass.prototype;
+ var properties = Object.keys(source);
+
+ if (!Object.keys({ toString: true }).length)
+ properties.push("toString", "valueOf");
+
+ for (var i = 0, length = properties.length; i < length; i++) {
+ var property = properties[i], value = source[property];
+ if (ancestor && Object.isFunction(value) &&
+ value.argumentNames().first() == "$super") {
+ var method = value;
+ value = (function(m) {
+ return function() { return ancestor[m].apply(this, arguments) };
+ })(property).wrap(method);
+
+ value.valueOf = method.valueOf.bind(method);
+ value.toString = method.toString.bind(method);
+ }
+ this.prototype[property] = value;
+ }
+
+ return this;
+ }
+};
+
+var Abstract = { };
+
+Object.extend = function(destination, source) {
+ for (var property in source)
+ destination[property] = source[property];
+ return destination;
+};
+
+Object.extend(Object, {
+ inspect: function(object) {
+ try {
+ if (Object.isUndefined(object)) return 'undefined';
+ if (object === null) return 'null';
+ return object.inspect ? object.inspect() : String(object);
+ } catch (e) {
+ if (e instanceof RangeError) return '...';
+ throw e;
+ }
+ },
+
+ toJSON: function(object) {
+ var type = typeof object;
+ switch (type) {
+ case 'undefined':
+ case 'function':
+ case 'unknown': return;
+ case 'boolean': return object.toString();
+ }
+
+ if (object === null) return 'null';
+ if (object.toJSON) return object.toJSON();
+ if (Object.isElement(object)) return;
+
+ var results = [];
+ for (var property in object) {
+ var value = Object.toJSON(object[property]);
+ if (!Object.isUndefined(value))
+ results.push(property.toJSON() + ': ' + value);
+ }
+
+ return '{' + results.join(', ') + '}';
+ },
+
+ toQueryString: function(object) {
+ return $H(object).toQueryString();
+ },
+
+ toHTML: function(object) {
+ return object && object.toHTML ? object.toHTML() : String.interpret(object);
+ },
+
+ keys: function(object) {
+ var keys = [];
+ for (var property in object)
+ keys.push(property);
+ return keys;
+ },
+
+ values: function(object) {
+ var values = [];
+ for (var property in object)
+ values.push(object[property]);
+ return values;
+ },
+
+ clone: function(object) {
+ return Object.extend({ }, object);
+ },
+
+ isElement: function(object) {
+ return !!(object && object.nodeType == 1);
+ },
+
+ isArray: function(object) {
+ return object != null && typeof object == "object" &&
+ 'splice' in object && 'join' in object;
+ },
+
+ isHash: function(object) {
+ return object instanceof Hash;
+ },
+
+ isFunction: function(object) {
+ return typeof object == "function";
+ },
+
+ isString: function(object) {
+ return typeof object == "string";
+ },
+
+ isNumber: function(object) {
+ return typeof object == "number";
+ },
+
+ isUndefined: function(object) {
+ return typeof object == "undefined";
+ }
+});
+
+Object.extend(Function.prototype, {
+ argumentNames: function() {
+ var names = this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
+ .replace(/\s+/g, '').split(',');
+ return names.length == 1 && !names[0] ? [] : names;
+ },
+
+ bind: function() {
+ if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
+ var __method = this, args = $A(arguments), object = args.shift();
+ return function() {
+ return __method.apply(object, args.concat($A(arguments)));
+ }
+ },
+
+ bindAsEventListener: function() {
+ var __method = this, args = $A(arguments), object = args.shift();
+ return function(event) {
+ return __method.apply(object, [event || window.event].concat(args));
+ }
+ },
+
+ curry: function() {
+ if (!arguments.length) return this;
+ var __method = this, args = $A(arguments);
+ return function() {
+ return __method.apply(this, args.concat($A(arguments)));
+ }
+ },
+
+ delay: function() {
+ var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
+ return window.setTimeout(function() {
+ return __method.apply(__method, args);
+ }, timeout);
+ },
+
+ defer: function() {
+ var args = [0.01].concat($A(arguments));
+ return this.delay.apply(this, args);
+ },
+
+ wrap: function(wrapper) {
+ var __method = this;
+ return function() {
+ return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
+ }
+ },
+
+ methodize: function() {
+ if (this._methodized) return this._methodized;
+ var __method = this;
+ return this._methodized = function() {
+ return __method.apply(null, [this].concat($A(arguments)));
+ };
+ }
+});
+
+Date.prototype.toJSON = function() {
+ return '"' + this.getUTCFullYear() + '-' +
+ (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
+ this.getUTCDate().toPaddedString(2) + 'T' +
+ this.getUTCHours().toPaddedString(2) + ':' +
+ this.getUTCMinutes().toPaddedString(2) + ':' +
+ this.getUTCSeconds().toPaddedString(2) + 'Z"';
+};
+
+var Try = {
+ these: function() {
+ var returnValue;
+
+ for (var i = 0, length = arguments.length; i < length; i++) {
+ var lambda = arguments[i];
+ try {
+ returnValue = lambda();
+ break;
+ } catch (e) { }
+ }
+
+ return returnValue;
+ }
+};
+
+RegExp.prototype.match = RegExp.prototype.test;
+
+RegExp.escape = function(str) {
+ return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
+};
+
+/*--------------------------------------------------------------------------*/
+
+var PeriodicalExecuter = Class.create({
+ initialize: function(callback, frequency) {
+ this.callback = callback;
+ this.frequency = frequency;
+ this.currentlyExecuting = false;
+
+ this.registerCallback();
+ },
+
+ registerCallback: function() {
+ this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+ },
+
+ execute: function() {
+ this.callback(this);
+ },
+
+ stop: function() {
+ if (!this.timer) return;
+ clearInterval(this.timer);
+ this.timer = null;
+ },
+
+ onTimerEvent: function() {
+ if (!this.currentlyExecuting) {
+ try {
+ this.currentlyExecuting = true;
+ this.execute();
+ } finally {
+ this.currentlyExecuting = false;
+ }
+ }
+ }
+});
+Object.extend(String, {
+ interpret: function(value) {
+ return value == null ? '' : String(value);
+ },
+ specialChar: {
+ '\b': '\\b',
+ '\t': '\\t',
+ '\n': '\\n',
+ '\f': '\\f',
+ '\r': '\\r',
+ '\\': '\\\\'
+ }
+});
+
+Object.extend(String.prototype, {
+ gsub: function(pattern, replacement) {
+ var result = '', source = this, match;
+ replacement = arguments.callee.prepareReplacement(replacement);
+
+ while (source.length > 0) {
+ if (match = source.match(pattern)) {
+ result += source.slice(0, match.index);
+ result += String.interpret(replacement(match));
+ source = source.slice(match.index + match[0].length);
+ } else {
+ result += source, source = '';
+ }
+ }
+ return result;
+ },
+
+ sub: function(pattern, replacement, count) {
+ replacement = this.gsub.prepareReplacement(replacement);
+ count = Object.isUndefined(count) ? 1 : count;
+
+ return this.gsub(pattern, function(match) {
+ if (--count < 0) return match[0];
+ return replacement(match);
+ });
+ },
+
+ scan: function(pattern, iterator) {
+ this.gsub(pattern, iterator);
+ return String(this);
+ },
+
+ truncate: function(length, truncation) {
+ length = length || 30;
+ truncation = Object.isUndefined(truncation) ? '...' : truncation;
+ return this.length > length ?
+ this.slice(0, length - truncation.length) + truncation : String(this);
+ },
+
+ strip: function() {
+ return this.replace(/^\s+/, '').replace(/\s+$/, '');
+ },
+
+ stripTags: function() {
+ return this.replace(/<\/?[^>]+>/gi, '');
+ },
+
+ stripScripts: function() {
+ return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+ },
+
+ extractScripts: function() {
+ var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+ var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+ return (this.match(matchAll) || []).map(function(scriptTag) {
+ return (scriptTag.match(matchOne) || ['', ''])[1];
+ });
+ },
+
+ evalScripts: function() {
+ return this.extractScripts().map(function(script) { return eval(script) });
+ },
+
+ escapeHTML: function() {
+ var self = arguments.callee;
+ self.text.data = this;
+ return self.div.innerHTML;
+ },
+
+ unescapeHTML: function() {
+ var div = new Element('div');
+ div.innerHTML = this.stripTags();
+ return div.childNodes[0] ? (div.childNodes.length > 1 ?
+ $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
+ div.childNodes[0].nodeValue) : '';
+ },
+
+ toQueryParams: function(separator) {
+ var match = this.strip().match(/([^?#]*)(#.*)?$/);
+ if (!match) return { };
+
+ return match[1].split(separator || '&').inject({ }, function(hash, pair) {
+ if ((pair = pair.split('='))[0]) {
+ var key = decodeURIComponent(pair.shift());
+ var value = pair.length > 1 ? pair.join('=') : pair[0];
+ if (value != undefined) value = decodeURIComponent(value);
+
+ if (key in hash) {
+ if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
+ hash[key].push(value);
+ }
+ else hash[key] = value;
+ }
+ return hash;
+ });
+ },
+
+ toArray: function() {
+ return this.split('');
+ },
+
+ succ: function() {
+ return this.slice(0, this.length - 1) +
+ String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+ },
+
+ times: function(count) {
+ return count < 1 ? '' : new Array(count + 1).join(this);
+ },
+
+ camelize: function() {
+ var parts = this.split('-'), len = parts.length;
+ if (len == 1) return parts[0];
+
+ var camelized = this.charAt(0) == '-'
+ ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+ : parts[0];
+
+ for (var i = 1; i < len; i++)
+ camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
+
+ return camelized;
+ },
+
+ capitalize: function() {
+ return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+ },
+
+ underscore: function() {
+ return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
+ },
+
+ dasherize: function() {
+ return this.gsub(/_/,'-');
+ },
+
+ inspect: function(useDoubleQuotes) {
+ var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
+ var character = String.specialChar[match[0]];
+ return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
+ });
+ if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
+ return "'" + escapedString.replace(/'/g, '\\\'') + "'";
+ },
+
+ toJSON: function() {
+ return this.inspect(true);
+ },
+
+ unfilterJSON: function(filter) {
+ return this.sub(filter || Prototype.JSONFilter, '#{1}');
+ },
+
+ isJSON: function() {
+ var str = this;
+ if (str.blank()) return false;
+ str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
+ return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
+ },
+
+ evalJSON: function(sanitize) {
+ var json = this.unfilterJSON();
+ try {
+ if (!sanitize || json.isJSON()) return eval('(' + json + ')');
+ } catch (e) { }
+ throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
+ },
+
+ include: function(pattern) {
+ return this.indexOf(pattern) > -1;
+ },
+
+ startsWith: function(pattern) {
+ return this.indexOf(pattern) === 0;
+ },
+
+ endsWith: function(pattern) {
+ var d = this.length - pattern.length;
+ return d >= 0 && this.lastIndexOf(pattern) === d;
+ },
+
+ empty: function() {
+ return this == '';
+ },
+
+ blank: function() {
+ return /^\s*$/.test(this);
+ },
+
+ interpolate: function(object, pattern) {
+ return new Template(this, pattern).evaluate(object);
+ }
+});
+
+if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
+ escapeHTML: function() {
+ return this.replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');
+ },
+ unescapeHTML: function() {
+ return this.stripTags().replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');
+ }
+});
+
+String.prototype.gsub.prepareReplacement = function(replacement) {
+ if (Object.isFunction(replacement)) return replacement;
+ var template = new Template(replacement);
+ return function(match) { return template.evaluate(match) };
+};
+
+String.prototype.parseQuery = String.prototype.toQueryParams;
+
+Object.extend(String.prototype.escapeHTML, {
+ div: document.createElement('div'),
+ text: document.createTextNode('')
+});
+
+String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);
+
+var Template = Class.create({
+ initialize: function(template, pattern) {
+ this.template = template.toString();
+ this.pattern = pattern || Template.Pattern;
+ },
+
+ evaluate: function(object) {
+ if (Object.isFunction(object.toTemplateReplacements))
+ object = object.toTemplateReplacements();
+
+ return this.template.gsub(this.pattern, function(match) {
+ if (object == null) return '';
+
+ var before = match[1] || '';
+ if (before == '\\') return match[2];
+
+ var ctx = object, expr = match[3];
+ var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
+ match = pattern.exec(expr);
+ if (match == null) return before;
+
+ while (match != null) {
+ var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
+ ctx = ctx[comp];
+ if (null == ctx || '' == match[3]) break;
+ expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
+ match = pattern.exec(expr);
+ }
+
+ return before + String.interpret(ctx);
+ });
+ }
+});
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
+
+var $break = { };
+
+var Enumerable = {
+ each: function(iterator, context) {
+ var index = 0;
+ try {
+ this._each(function(value) {
+ iterator.call(context, value, index++);
+ });
+ } catch (e) {
+ if (e != $break) throw e;
+ }
+ return this;
+ },
+
+ eachSlice: function(number, iterator, context) {
+ var index = -number, slices = [], array = this.toArray();
+ if (number < 1) return array;
+ while ((index += number) < array.length)
+ slices.push(array.slice(index, index+number));
+ return slices.collect(iterator, context);
+ },
+
+ all: function(iterator, context) {
+ iterator = iterator || Prototype.K;
+ var result = true;
+ this.each(function(value, index) {
+ result = result && !!iterator.call(context, value, index);
+ if (!result) throw $break;
+ });
+ return result;
+ },
+
+ any: function(iterator, context) {
+ iterator = iterator || Prototype.K;
+ var result = false;
+ this.each(function(value, index) {
+ if (result = !!iterator.call(context, value, index))
+ throw $break;
+ });
+ return result;
+ },
+
+ collect: function(iterator, context) {
+ iterator = iterator || Prototype.K;
+ var results = [];
+ this.each(function(value, index) {
+ results.push(iterator.call(context, value, index));
+ });
+ return results;
+ },
+
+ detect: function(iterator, context) {
+ var result;
+ this.each(function(value, index) {
+ if (iterator.call(context, value, index)) {
+ result = value;
+ throw $break;
+ }
+ });
+ return result;
+ },
+
+ findAll: function(iterator, context) {
+ var results = [];
+ this.each(function(value, index) {
+ if (iterator.call(context, value, index))
+ results.push(value);
+ });
+ return results;
+ },
+
+ grep: function(filter, iterator, context) {
+ iterator = iterator || Prototype.K;
+ var results = [];
+
+ if (Object.isString(filter))
+ filter = new RegExp(filter);
+
+ this.each(function(value, index) {
+ if (filter.match(value))
+ results.push(iterator.call(context, value, index));
+ });
+ return results;
+ },
+
+ include: function(object) {
+ if (Object.isFunction(this.indexOf))
+ if (this.indexOf(object) != -1) return true;
+
+ var found = false;
+ this.each(function(value) {
+ if (value == object) {
+ found = true;
+ throw $break;
+ }
+ });
+ return found;
+ },
+
+ inGroupsOf: function(number, fillWith) {
+ fillWith = Object.isUndefined(fillWith) ? null : fillWith;
+ return this.eachSlice(number, function(slice) {
+ while(slice.length < number) slice.push(fillWith);
+ return slice;
+ });
+ },
+
+ inject: function(memo, iterator, context) {
+ this.each(function(value, index) {
+ memo = iterator.call(context, memo, value, index);
+ });
+ return memo;
+ },
+
+ invoke: function(method) {
+ var args = $A(arguments).slice(1);
+ return this.map(function(value) {
+ return value[method].apply(value, args);
+ });
+ },
+
+ max: function(iterator, context) {
+ iterator = iterator || Prototype.K;
+ var result;
+ this.each(function(value, index) {
+ value = iterator.call(context, value, index);
+ if (result == null || value >= result)
+ result = value;
+ });
+ return result;
+ },
+
+ min: function(iterator, context) {
+ iterator = iterator || Prototype.K;
+ var result;
+ this.each(function(value, index) {
+ value = iterator.call(context, value, index);
+ if (result == null || value < result)
+ result = value;
+ });
+ return result;
+ },
+
+ partition: function(iterator, context) {
+ iterator = iterator || Prototype.K;
+ var trues = [], falses = [];
+ this.each(function(value, index) {
+ (iterator.call(context, value, index) ?
+ trues : falses).push(value);
+ });
+ return [trues, falses];
+ },
+
+ pluck: function(property) {
+ var results = [];
+ this.each(function(value) {
+ results.push(value[property]);
+ });
+ return results;
+ },
+
+ reject: function(iterator, context) {
+ var results = [];
+ this.each(function(value, index) {
+ if (!iterator.call(context, value, index))
+ results.push(value);
+ });
+ return results;
+ },
+
+ sortBy: function(iterator, context) {
+ return this.map(function(value, index) {
+ return {
+ value: value,
+ criteria: iterator.call(context, value, index)
+ };
+ }).sort(function(left, right) {
+ var a = left.criteria, b = right.criteria;
+ return a < b ? -1 : a > b ? 1 : 0;
+ }).pluck('value');
+ },
+
+ toArray: function() {
+ return this.map();
+ },
+
+ zip: function() {
+ var iterator = Prototype.K, args = $A(arguments);
+ if (Object.isFunction(args.last()))
+ iterator = args.pop();
+
+ var collections = [this].concat(args).map($A);
+ return this.map(function(value, index) {
+ return iterator(collections.pluck(index));
+ });
+ },
+
+ size: function() {
+ return this.toArray().length;
+ },
+
+ inspect: function() {
+ return '#<Enumerable:' + this.toArray().inspect() + '>';
+ }
+};
+
+Object.extend(Enumerable, {
+ map: Enumerable.collect,
+ find: Enumerable.detect,
+ select: Enumerable.findAll,
+ filter: Enumerable.findAll,
+ member: Enumerable.include,
+ entries: Enumerable.toArray,
+ every: Enumerable.all,
+ some: Enumerable.any
+});
+function $A(iterable) {
+ if (!iterable) return [];
+ if (iterable.toArray) return iterable.toArray();
+ var length = iterable.length || 0, results = new Array(length);
+ while (length--) results[length] = iterable[length];
+ return results;
+}
+
+if (Prototype.Browser.WebKit) {
+ $A = function(iterable) {
+ if (!iterable) return [];
+ // In Safari, only use the `toArray` method if it's not a NodeList.
+ // A NodeList is a function, has an function `item` property, and a numeric
+ // `length` property. Adapted from Google Doctype.
+ if (!(typeof iterable === 'function' && typeof iterable.length ===
+ 'number' && typeof iterable.item === 'function') && iterable.toArray)
+ return iterable.toArray();
+ var length = iterable.length || 0, results = new Array(length);
+ while (length--) results[length] = iterable[length];
+ return results;
+ };
+}
+
+Array.from = $A;
+
+Object.extend(Array.prototype, Enumerable);
+
+if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;
+
+Object.extend(Array.prototype, {
+ _each: function(iterator) {
+ for (var i = 0, length = this.length; i < length; i++)
+ iterator(this[i]);
+ },
+
+ clear: function() {
+ this.length = 0;
+ return this;
+ },
+
+ first: function() {
+ return this[0];
+ },
+
+ last: function() {
+ return this[this.length - 1];
+ },
+
+ compact: function() {
+ return this.select(function(value) {
+ return value != null;
+ });
+ },
+
+ flatten: function() {
+ return this.inject([], function(array, value) {
+ return array.concat(Object.isArray(value) ?
+ value.flatten() : [value]);
+ });
+ },
+
+ without: function() {
+ var values = $A(arguments);
+ return this.select(function(value) {
+ return !values.include(value);
+ });
+ },
+
+ reverse: function(inline) {
+ return (inline !== false ? this : this.toArray())._reverse();
+ },
+
+ reduce: function() {
+ return this.length > 1 ? this : this[0];
+ },
+
+ uniq: function(sorted) {
+ return this.inject([], function(array, value, index) {
+ if (0 == index || (sorted ? array.last() != value : !array.include(value)))
+ array.push(value);
+ return array;
+ });
+ },
+
+ intersect: function(array) {
+ return this.uniq().findAll(function(item) {
+ return array.detect(function(value) { return item === value });
+ });
+ },
+
+ clone: function() {
+ return [].concat(this);
+ },
+
+ size: function() {
+ return this.length;
+ },
+
+ inspect: function() {
+ return '[' + this.map(Object.inspect).join(', ') + ']';
+ },
+
+ toJSON: function() {
+ var results = [];
+ this.each(function(object) {
+ var value = Object.toJSON(object);
+ if (!Object.isUndefined(value)) results.push(value);
+ });
+ return '[' + results.join(', ') + ']';
+ }
+});
+
+// use native browser JS 1.6 implementation if available
+if (Object.isFunction(Array.prototype.forEach))
+ Array.prototype._each = Array.prototype.forEach;
+
+if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
+ i || (i = 0);
+ var length = this.length;
+ if (i < 0) i = length + i;
+ for (; i < length; i++)
+ if (this[i] === item) return i;
+ return -1;
+};
+
+if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
+ i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
+ var n = this.slice(0, i).reverse().indexOf(item);
+ return (n < 0) ? n : i - n - 1;
+};
+
+Array.prototype.toArray = Array.prototype.clone;
+
+function $w(string) {
+ if (!Object.isString(string)) return [];
+ string = string.strip();
+ return string ? string.split(/\s+/) : [];
+}
+
+if (Prototype.Browser.Opera){
+ Array.prototype.concat = function() {
+ var array = [];
+ for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
+ for (var i = 0, length = arguments.length; i < length; i++) {
+ if (Object.isArray(arguments[i])) {
+ for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
+ array.push(arguments[i][j]);
+ } else {
+ array.push(arguments[i]);
+ }
+ }
+ return array;
+ };
+}
+Object.extend(Number.prototype, {
+ toColorPart: function() {
+ return this.toPaddedString(2, 16);
+ },
+
+ succ: function() {
+ return this + 1;
+ },
+
+ times: function(iterator, context) {
+ $R(0, this, true).each(iterator, context);
+ return this;
+ },
+
+ toPaddedString: function(length, radix) {
+ var string = this.toString(radix || 10);
+ return '0'.times(length - string.length) + string;
+ },
+
+ toJSON: function() {
+ return isFinite(this) ? this.toString() : 'null';
+ }
+});
+
+$w('abs round ceil floor').each(function(method){
+ Number.prototype[method] = Math[method].methodize();
+});
+function $H(object) {
+ return new Hash(object);
+};
+
+var Hash = Class.create(Enumerable, (function() {
+
+ function toQueryPair(key, value) {
+ if (Object.isUndefined(value)) return key;
+ return key + '=' + encodeURIComponent(String.interpret(value));
+ }
+
+ return {
+ initialize: function(object) {
+ this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
+ },
+
+ _each: function(iterator) {
+ for (var key in this._object) {
+ var value = this._object[key], pair = [key, value];
+ pair.key = key;
+ pair.value = value;
+ iterator(pair);
+ }
+ },
+
+ set: function(key, value) {
+ return this._object[key] = value;
+ },
+
+ get: function(key) {
+ // simulating poorly supported hasOwnProperty
+ if (this._object[key] !== Object.prototype[key])
+ return this._object[key];
+ },
+
+ unset: function(key) {
+ var value = this._object[key];
+ delete this._object[key];
+ return value;
+ },
+
+ toObject: function() {
+ return Object.clone(this._object);
+ },
+
+ keys: function() {
+ return this.pluck('key');
+ },
+
+ values: function() {
+ return this.pluck('value');
+ },
+
+ index: function(value) {
+ var match = this.detect(function(pair) {
+ return pair.value === value;
+ });
+ return match && match.key;
+ },
+
+ merge: function(object) {
+ return this.clone().update(object);
+ },
+
+ update: function(object) {
+ return new Hash(object).inject(this, function(result, pair) {
+ result.set(pair.key, pair.value);
+ return result;
+ });
+ },
+
+ toQueryString: function() {
+ return this.inject([], function(results, pair) {
+ var key = encodeURIComponent(pair.key), values = pair.value;
+
+ if (values && typeof values == 'object') {
+ if (Object.isArray(values))
+ return results.concat(values.map(toQueryPair.curry(key)));
+ } else results.push(toQueryPair(key, values));
+ return results;
+ }).join('&');
+ },
+
+ inspect: function() {
+ return '#<Hash:{' + this.map(function(pair) {
+ return pair.map(Object.inspect).join(': ');
+ }).join(', ') + '}>';
+ },
+
+ toJSON: function() {
+ return Object.toJSON(this.toObject());
+ },
+
+ clone: function() {
+ return new Hash(this);
+ }
+ }
+})());
+
+Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
+Hash.from = $H;
+var ObjectRange = Class.create(Enumerable, {
+ initialize: function(start, end, exclusive) {
+ this.start = start;
+ this.end = end;
+ this.exclusive = exclusive;
+ },
+
+ _each: function(iterator) {
+ var value = this.start;
+ while (this.include(value)) {
+ iterator(value);
+ value = value.succ();
+ }
+ },
+
+ include: function(value) {
+ if (value < this.start)
+ return false;
+ if (this.exclusive)
+ return value < this.end;
+ return value <= this.end;
+ }
+});
+
+var $R = function(start, end, exclusive) {
+ return new ObjectRange(start, end, exclusive);
+};
+
+var Ajax = {
+ getTransport: function() {
+ return Try.these(
+ function() {return new XMLHttpRequest()},
+ function() {return new ActiveXObject('Msxml2.XMLHTTP')},
+ function() {return new ActiveXObject('Microsoft.XMLHTTP')}
+ ) || false;
+ },
+
+ activeRequestCount: 0
+};
+
+Ajax.Responders = {
+ responders: [],
+
+ _each: function(iterator) {
+ this.responders._each(iterator);
+ },
+
+ register: function(responder) {
+ if (!this.include(responder))
+ this.responders.push(responder);
+ },
+
+ unregister: function(responder) {
+ this.responders = this.responders.without(responder);
+ },
+
+ dispatch: function(callback, request, transport, json) {
+ this.each(function(responder) {
+ if (Object.isFunction(responder[callback])) {
+ try {
+ responder[callback].apply(responder, [request, transport, json]);
+ } catch (e) { }
+ }
+ });
+ }
+};
+
+Object.extend(Ajax.Responders, Enumerable);
+
+Ajax.Responders.register({
+ onCreate: function() { Ajax.activeRequestCount++ },
+ onComplete: function() { Ajax.activeRequestCount-- }
+});
+
+Ajax.Base = Class.create({
+ initialize: function(options) {
+ this.options = {
+ method: 'post',
+ asynchronous: true,
+ contentType: 'application/x-www-form-urlencoded',
+ encoding: 'UTF-8',
+ parameters: '',
+ evalJSON: true,
+ evalJS: true
+ };
+ Object.extend(this.options, options || { });
+
+ this.options.method = this.options.method.toLowerCase();
+
+ if (Object.isString(this.options.parameters))
+ this.options.parameters = this.options.parameters.toQueryParams();
+ else if (Object.isHash(this.options.parameters))
+ this.options.parameters = this.options.parameters.toObject();
+ }
+});
+
+Ajax.Request = Class.create(Ajax.Base, {
+ _complete: false,
+
+ initialize: function($super, url, options) {
+ $super(options);
+ this.transport = Ajax.getTransport();
+ this.request(url);
+ },
+
+ request: function(url) {
+ this.url = url;
+ this.method = this.options.method;
+ var params = Object.clone(this.options.parameters);
+
+ if (!['get', 'post'].include(this.method)) {
+ // simulate other verbs over post
+ params['_method'] = this.method;
+ this.method = 'post';
+ }
+
+ this.parameters = params;
+
+ if (params = Object.toQueryString(params)) {
+ // when GET, append parameters to URL
+ if (this.method == 'get')
+ this.url += (this.url.include('?') ? '&' : '?') + params;
+ else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+ params += '&_=';
+ }
+
+ try {
+ var response = new Ajax.Response(this);
+ if (this.options.onCreate) this.options.onCreate(response);
+ Ajax.Responders.dispatch('onCreate', this, response);
+
+ this.transport.open(this.method.toUpperCase(), this.url,
+ this.options.asynchronous);
+
+ if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);
+
+ this.transport.onreadystatechange = this.onStateChange.bind(this);
+ this.setRequestHeaders();
+
+ this.body = this.method == 'post' ? (this.options.postBody || params) : null;
+ this.transport.send(this.body);
+
+ /* Force Firefox to handle ready state 4 for synchronous requests */
+ if (!this.options.asynchronous && this.transport.overrideMimeType)
+ this.onStateChange();
+
+ }
+ catch (e) {
+ this.dispatchException(e);
+ }
+ },
+
+ onStateChange: function() {
+ var readyState = this.transport.readyState;
+ if (readyState > 1 && !((readyState == 4) && this._complete))
+ this.respondToReadyState(this.transport.readyState);
+ },
+
+ setRequestHeaders: function() {
+ var headers = {
+ 'X-Requested-With': 'XMLHttpRequest',
+ 'X-Prototype-Version': Prototype.Version,
+ 'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+ };
+
+ if (this.method == 'post') {
+ headers['Content-type'] = this.options.contentType +
+ (this.options.encoding ? '; charset=' + this.options.encoding : '');
+
+ /* Force "Connection: close" for older Mozilla browsers to work
+ * around a bug where XMLHttpRequest sends an incorrect
+ * Content-length header. See Mozilla Bugzilla #246651.
+ */
+ if (this.transport.overrideMimeType &&
+ (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+ headers['Connection'] = 'close';
+ }
+
+ // user-defined headers
+ if (typeof this.options.requestHeaders == 'object') {
+ var extras = this.options.requestHeaders;
+
+ if (Object.isFunction(extras.push))
+ for (var i = 0, length = extras.length; i < length; i += 2)
+ headers[extras[i]] = extras[i+1];
+ else
+ $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+ }
+
+ for (var name in headers)
+ this.transport.setRequestHeader(name, headers[name]);
+ },
+
+ success: function() {
+ var status = this.getStatus();
+ return !status || (status >= 200 && status < 300);
+ },
+
+ getStatus: function() {
+ try {
+ return this.transport.status || 0;
+ } catch (e) { return 0 }
+ },
+
+ respondToReadyState: function(readyState) {
+ var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);
+
+ if (state == 'Complete') {
+ try {
+ this._complete = true;
+ (this.options['on' + response.status]
+ || this.options['on' + (this.success() ? 'Success' : 'Failure')]
+ || Prototype.emptyFunction)(response, response.headerJSON);
+ } catch (e) {
+ this.dispatchException(e);
+ }
+
+ var contentType = response.getHeader('Content-type');
+ if (this.options.evalJS == 'force'
+ || (this.options.evalJS && this.isSameOrigin() && contentType
+ && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
+ this.evalResponse();
+ }
+
+ try {
+ (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
+ Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
+ } catch (e) {
+ this.dispatchException(e);
+ }
+
+ if (state == 'Complete') {
+ // avoid memory leak in MSIE: clean up
+ this.transport.onreadystatechange = Prototype.emptyFunction;
+ }
+ },
+
+ isSameOrigin: function() {
+ var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
+ return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
+ protocol: location.protocol,
+ domain: document.domain,
+ port: location.port ? ':' + location.port : ''
+ }));
+ },
+
+ getHeader: function(name) {
+ try {
+ return this.transport.getResponseHeader(name) || null;
+ } catch (e) { return null }
+ },
+
+ evalResponse: function() {
+ try {
+ return eval((this.transport.responseText || '').unfilterJSON());
+ } catch (e) {
+ this.dispatchException(e);
+ }
+ },
+
+ dispatchException: function(exception) {
+ (this.options.onException || Prototype.emptyFunction)(this, exception);
+ Ajax.Responders.dispatch('onException', this, exception);
+ }
+});
+
+Ajax.Request.Events =
+ ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
+
+Ajax.Response = Class.create({
+ initialize: function(request){
+ this.request = request;
+ var transport = this.transport = request.transport,
+ readyState = this.readyState = transport.readyState;
+
+ if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
+ this.status = this.getStatus();
+ this.statusText = this.getStatusText();
+ this.responseText = String.interpret(transport.responseText);
+ this.headerJSON = this._getHeaderJSON();
+ }
+
+ if(readyState == 4) {
+ var xml = transport.responseXML;
+ this.responseXML = Object.isUndefined(xml) ? null : xml;
+ this.responseJSON = this._getResponseJSON();
+ }
+ },
+
+ status: 0,
+ statusText: '',
+
+ getStatus: Ajax.Request.prototype.getStatus,
+
+ getStatusText: function() {
+ try {
+ return this.transport.statusText || '';
+ } catch (e) { return '' }
+ },
+
+ getHeader: Ajax.Request.prototype.getHeader,
+
+ getAllHeaders: function() {
+ try {
+ return this.getAllResponseHeaders();
+ } catch (e) { return null }
+ },
+
+ getResponseHeader: function(name) {
+ return this.transport.getResponseHeader(name);
+ },
+
+ getAllResponseHeaders: function() {
+ return this.transport.getAllResponseHeaders();
+ },
+
+ _getHeaderJSON: function() {
+ var json = this.getHeader('X-JSON');
+ if (!json) return null;
+ json = decodeURIComponent(escape(json));
+ try {
+ return json.evalJSON(this.request.options.sanitizeJSON ||
+ !this.request.isSameOrigin());
+ } catch (e) {
+ this.request.dispatchException(e);
+ }
+ },
+
+ _getResponseJSON: function() {
+ var options = this.request.options;
+ if (!options.evalJSON || (options.evalJSON != 'force' &&
+ !(this.getHeader('Content-type') || '').include('application/json')) ||
+ this.responseText.blank())
+ return null;
+ try {
+ return this.responseText.evalJSON(options.sanitizeJSON ||
+ !this.request.isSameOrigin());
+ } catch (e) {
+ this.request.dispatchException(e);
+ }
+ }
+});
+
+Ajax.Updater = Class.create(Ajax.Request, {
+ initialize: function($super, container, url, options) {
+ this.container = {
+ success: (container.success || container),
+ failure: (container.failure || (container.success ? null : container))
+ };
+
+ options = Object.clone(options);
+ var onComplete = options.onComplete;
+ options.onComplete = (function(response, json) {
+ this.updateContent(response.responseText);
+ if (Object.isFunction(onComplete)) onComplete(response, json);
+ }).bind(this);
+
+ $super(url, options);
+ },
+
+ updateContent: function(responseText) {
+ var receiver = this.container[this.success() ? 'success' : 'failure'],
+ options = this.options;
+
+ if (!options.evalScripts) responseText = responseText.stripScripts();
+
+ if (receiver = $(receiver)) {
+ if (options.insertion) {
+ if (Object.isString(options.insertion)) {
+ var insertion = { }; insertion[options.insertion] = responseText;
+ receiver.insert(insertion);
+ }
+ else options.insertion(receiver, responseText);
+ }
+ else receiver.update(responseText);
+ }
+ }
+});
+
+Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
+ initialize: function($super, container, url, options) {
+ $super(options);
+ this.onComplete = this.options.onComplete;
+
+ this.frequency = (this.options.frequency || 2);
+ this.decay = (this.options.decay || 1);
+
+ this.updater = { };
+ this.container = container;
+ this.url = url;
+
+ this.start();
+ },
+
+ start: function() {
+ this.options.onComplete = this.updateComplete.bind(this);
+ this.onTimerEvent();
+ },
+
+ stop: function() {
+ this.updater.options.onComplete = undefined;
+ clearTimeout(this.timer);
+ (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
+ },
+
+ updateComplete: function(response) {
+ if (this.options.decay) {
+ this.decay = (response.responseText == this.lastText ?
+ this.decay * this.options.decay : 1);
+
+ this.lastText = response.responseText;
+ }
+ this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
+ },
+
+ onTimerEvent: function() {
+ this.updater = new Ajax.Updater(this.container, this.url, this.options);
+ }
+});
+function $(element) {
+ if (arguments.length > 1) {
+ for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+ elements.push($(arguments[i]));
+ return elements;
+ }
+ if (Object.isString(element))
+ element = document.getElementById(element);
+ return Element.extend(element);
+}
+
+if (Prototype.BrowserFeatures.XPath) {
+ document._getElementsByXPath = function(expression, parentElement) {
+ var results = [];
+ var query = document.evaluate(expression, $(parentElement) || document,
+ null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+ for (var i = 0, length = query.snapshotLength; i < length; i++)
+ results.push(Element.extend(query.snapshotItem(i)));
+ return results;
+ };
+}
+
+/*--------------------------------------------------------------------------*/
+
+if (!window.Node) var Node = { };
+
+if (!Node.ELEMENT_NODE) {
+ // DOM level 2 ECMAScript Language Binding
+ Object.extend(Node, {
+ ELEMENT_NODE: 1,
+ ATTRIBUTE_NODE: 2,
+ TEXT_NODE: 3,
+ CDATA_SECTION_NODE: 4,
+ ENTITY_REFERENCE_NODE: 5,
+ ENTITY_NODE: 6,
+ PROCESSING_INSTRUCTION_NODE: 7,
+ COMMENT_NODE: 8,
+ DOCUMENT_NODE: 9,
+ DOCUMENT_TYPE_NODE: 10,
+ DOCUMENT_FRAGMENT_NODE: 11,
+ NOTATION_NODE: 12
+ });
+}
+
+(function() {
+ var element = this.Element;
+ this.Element = function(tagName, attributes) {
+ attributes = attributes || { };
+ tagName = tagName.toLowerCase();
+ var cache = Element.cache;
+ if (Prototype.Browser.IE && attributes.name) {
+ tagName = '<' + tagName + ' name="' + attributes.name + '">';
+ delete attributes.name;
+ return Element.writeAttribute(document.createElement(tagName), attributes);
+ }
+ if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
+ return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
+ };
+ Object.extend(this.Element, element || { });
+ if (element) this.Element.prototype = element.prototype;
+}).call(window);
+
+Element.cache = { };
+
+Element.Methods = {
+ visible: function(element) {
+ return $(element).style.display != 'none';
+ },
+
+ toggle: function(element) {
+ element = $(element);
+ Element[Element.visible(element) ? 'hide' : 'show'](element);
+ return element;
+ },
+
+ hide: function(element) {
+ element = $(element);
+ element.style.display = 'none';
+ return element;
+ },
+
+ show: function(element) {
+ element = $(element);
+ element.style.display = '';
+ return element;
+ },
+
+ remove: function(element) {
+ element = $(element);
+ element.parentNode.removeChild(element);
+ return element;
+ },
+
+ update: function(element, content) {
+ element = $(element);
+ if (content && content.toElement) content = content.toElement();
+ if (Object.isElement(content)) return element.update().insert(content);
+ content = Object.toHTML(content);
+ element.innerHTML = content.stripScripts();
+ content.evalScripts.bind(content).defer();
+ return element;
+ },
+
+ replace: function(element, content) {
+ element = $(element);
+ if (content && content.toElement) content = content.toElement();
+ else if (!Object.isElement(content)) {
+ content = Object.toHTML(content);
+ var range = element.ownerDocument.createRange();
+ range.selectNode(element);
+ content.evalScripts.bind(content).defer();
+ content = range.createContextualFragment(content.stripScripts());
+ }
+ element.parentNode.replaceChild(content, element);
+ return element;
+ },
+
+ insert: function(element, insertions) {
+ element = $(element);
+
+ if (Object.isString(insertions) || Object.isNumber(insertions) ||
+ Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
+ insertions = {bottom:insertions};
+
+ var content, insert, tagName, childNodes;
+
+ for (var position in insertions) {
+ content = insertions[position];
+ position = position.toLowerCase();
+ insert = Element._insertionTranslations[position];
+
+ if (content && content.toElement) content = content.toElement();
+ if (Object.isElement(content)) {
+ insert(element, content);
+ continue;
+ }
+
+ content = Object.toHTML(content);
+
+ tagName = ((position == 'before' || position == 'after')
+ ? element.parentNode : element).tagName.toUpperCase();
+
+ childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
+
+ if (position == 'top' || position == 'after') childNodes.reverse();
+ childNodes.each(insert.curry(element));
+
+ content.evalScripts.bind(content).defer();
+ }
+
+ return element;
+ },
+
+ wrap: function(element, wrapper, attributes) {
+ element = $(element);
+ if (Object.isElement(wrapper))
+ $(wrapper).writeAttribute(attributes || { });
+ else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
+ else wrapper = new Element('div', wrapper);
+ if (element.parentNode)
+ element.parentNode.replaceChild(wrapper, element);
+ wrapper.appendChild(element);
+ return wrapper;
+ },
+
+ inspect: function(element) {
+ element = $(element);
+ var result = '<' + element.tagName.toLowerCase();
+ $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+ var property = pair.first(), attribute = pair.last();
+ var value = (element[property] || '').toString();
+ if (value) result += ' ' + attribute + '=' + value.inspect(true);
+ });
+ return result + '>';
+ },
+
+ recursivelyCollect: function(element, property) {
+ element = $(element);
+ var elements = [];
+ while (element = element[property])
+ if (element.nodeType == 1)
+ elements.push(Element.extend(element));
+ return elements;
+ },
+
+ ancestors: function(element) {
+ return $(element).recursivelyCollect('parentNode');
+ },
+
+ descendants: function(element) {
+ return $(element).select("*");
+ },
+
+ firstDescendant: function(element) {
+ element = $(element).firstChild;
+ while (element && element.nodeType != 1) element = element.nextSibling;
+ return $(element);
+ },
+
+ immediateDescendants: function(element) {
+ if (!(element = $(element).firstChild)) return [];
+ while (element && element.nodeType != 1) element = element.nextSibling;
+ if (element) return [element].concat($(element).nextSiblings());
+ return [];
+ },
+
+ previousSiblings: function(element) {
+ return $(element).recursivelyCollect('previousSibling');
+ },
+
+ nextSiblings: function(element) {
+ return $(element).recursivelyCollect('nextSibling');
+ },
+
+ siblings: function(element) {
+ element = $(element);
+ return element.previousSiblings().reverse().concat(element.nextSiblings());
+ },
+
+ match: function(element, selector) {
+ if (Object.isString(selector))
+ selector = new Selector(selector);
+ return selector.match($(element));
+ },
+
+ up: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return $(element.parentNode);
+ var ancestors = element.ancestors();
+ return Object.isNumber(expression) ? ancestors[expression] :
+ Selector.findElement(ancestors, expression, index);
+ },
+
+ down: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return element.firstDescendant();
+ return Object.isNumber(expression) ? element.descendants()[expression] :
+ Element.select(element, expression)[index || 0];
+ },
+
+ previous: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
+ var previousSiblings = element.previousSiblings();
+ return Object.isNumber(expression) ? previousSiblings[expression] :
+ Selector.findElement(previousSiblings, expression, index);
+ },
+
+ next: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
+ var nextSiblings = element.nextSiblings();
+ return Object.isNumber(expression) ? nextSiblings[expression] :
+ Selector.findElement(nextSiblings, expression, index);
+ },
+
+ select: function() {
+ var args = $A(arguments), element = $(args.shift());
+ return Selector.findChildElements(element, args);
+ },
+
+ adjacent: function() {
+ var args = $A(arguments), element = $(args.shift());
+ return Selector.findChildElements(element.parentNode, args).without(element);
+ },
+
+ identify: function(element) {
+ element = $(element);
+ var id = element.readAttribute('id'), self = arguments.callee;
+ if (id) return id;
+ do { id = 'anonymous_element_' + self.counter++ } while ($(id));
+ element.writeAttribute('id', id);
+ return id;
+ },
+
+ readAttribute: function(element, name) {
+ element = $(element);
+ if (Prototype.Browser.IE) {
+ var t = Element._attributeTranslations.read;
+ if (t.values[name]) return t.values[name](element, name);
+ if (t.names[name]) name = t.names[name];
+ if (name.include(':')) {
+ return (!element.attributes || !element.attributes[name]) ? null :
+ element.attributes[name].value;
+ }
+ }
+ return element.getAttribute(name);
+ },
+
+ writeAttribute: function(element, name, value) {
+ element = $(element);
+ var attributes = { }, t = Element._attributeTranslations.write;
+
+ if (typeof name == 'object') attributes = name;
+ else attributes[name] = Object.isUndefined(value) ? true : value;
+
+ for (var attr in attributes) {
+ name = t.names[attr] || attr;
+ value = attributes[attr];
+ if (t.values[attr]) name = t.values[attr](element, value);
+ if (value === false || value === null)
+ element.removeAttribute(name);
+ else if (value === true)
+ element.setAttribute(name, name);
+ else element.setAttribute(name, value);
+ }
+ return element;
+ },
+
+ getHeight: function(element) {
+ return $(element).getDimensions().height;
+ },
+
+ getWidth: function(element) {
+ return $(element).getDimensions().width;
+ },
+
+ classNames: function(element) {
+ return new Element.ClassNames(element);
+ },
+
+ hasClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ var elementClassName = element.className;
+ return (elementClassName.length > 0 && (elementClassName == className ||
+ new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
+ },
+
+ addClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ if (!element.hasClassName(className))
+ element.className += (element.className ? ' ' : '') + className;
+ return element;
+ },
+
+ removeClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ element.className = element.className.replace(
+ new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
+ return element;
+ },
+
+ toggleClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ return element[element.hasClassName(className) ?
+ 'removeClassName' : 'addClassName'](className);
+ },
+
+ // removes whitespace-only text node children
+ cleanWhitespace: function(element) {
+ element = $(element);
+ var node = element.firstChild;
+ while (node) {
+ var nextNode = node.nextSibling;
+ if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
+ element.removeChild(node);
+ node = nextNode;
+ }
+ return element;
+ },
+
+ empty: function(element) {
+ return $(element).innerHTML.blank();
+ },
+
+ descendantOf: function(element, ancestor) {
+ element = $(element), ancestor = $(ancestor);
+
+ if (element.compareDocumentPosition)
+ return (element.compareDocumentPosition(ancestor) & 8) === 8;
+
+ if (ancestor.contains)
+ return ancestor.contains(element) && ancestor !== element;
+
+ while (element = element.parentNode)
+ if (element == ancestor) return true;
+
+ return false;
+ },
+
+ scrollTo: function(element) {
+ element = $(element);
+ var pos = element.cumulativeOffset();
+ window.scrollTo(pos[0], pos[1]);
+ return element;
+ },
+
+ getStyle: function(element, style) {
+ element = $(element);
+ style = style == 'float' ? 'cssFloat' : style.camelize();
+ var value = element.style[style];
+ if (!value || value == 'auto') {
+ var css = document.defaultView.getComputedStyle(element, null);
+ value = css ? css[style] : null;
+ }
+ if (style == 'opacity') return value ? parseFloat(value) : 1.0;
+ return value == 'auto' ? null : value;
+ },
+
+ getOpacity: function(element) {
+ return $(element).getStyle('opacity');
+ },
+
+ setStyle: function(element, styles) {
+ element = $(element);
+ var elementStyle = element.style, match;
+ if (Object.isString(styles)) {
+ element.style.cssText += ';' + styles;
+ return styles.include('opacity') ?
+ element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
+ }
+ for (var property in styles)
+ if (property == 'opacity') element.setOpacity(styles[property]);
+ else
+ elementStyle[(property == 'float' || property == 'cssFloat') ?
+ (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
+ property] = styles[property];
+
+ return element;
+ },
+
+ setOpacity: function(element, value) {
+ element = $(element);
+ element.style.opacity = (value == 1 || value === '') ? '' :
+ (value < 0.00001) ? 0 : value;
+ return element;
+ },
+
+ getDimensions: function(element) {
+ element = $(element);
+ var display = element.getStyle('display');
+ if (display != 'none' && display != null) // Safari bug
+ return {width: element.offsetWidth, height: element.offsetHeight};
+
+ // All *Width and *Height properties give 0 on elements with display none,
+ // so enable the element temporarily
+ var els = element.style;
+ var originalVisibility = els.visibility;
+ var originalPosition = els.position;
+ var originalDisplay = els.display;
+ els.visibility = 'hidden';
+ els.position = 'absolute';
+ els.display = 'block';
+ var originalWidth = element.clientWidth;
+ var originalHeight = element.clientHeight;
+ els.display = originalDisplay;
+ els.position = originalPosition;
+ els.visibility = originalVisibility;
+ return {width: originalWidth, height: originalHeight};
+ },
+
+ makePositioned: function(element) {
+ element = $(element);
+ var pos = Element.getStyle(element, 'position');
+ if (pos == 'static' || !pos) {
+ element._madePositioned = true;
+ element.style.position = 'relative';
+ // Opera returns the offset relative to the positioning context, when an
+ // element is position relative but top and left have not been defined
+ if (Prototype.Browser.Opera) {
+ element.style.top = 0;
+ element.style.left = 0;
+ }
+ }
+ return element;
+ },
+
+ undoPositioned: function(element) {
+ element = $(element);
+ if (element._madePositioned) {
+ element._madePositioned = undefined;
+ element.style.position =
+ element.style.top =
+ element.style.left =
+ element.style.bottom =
+ element.style.right = '';
+ }
+ return element;
+ },
+
+ makeClipping: function(element) {
+ element = $(element);
+ if (element._overflow) return element;
+ element._overflow = Element.getStyle(element, 'overflow') || 'auto';
+ if (element._overflow !== 'hidden')
+ element.style.overflow = 'hidden';
+ return element;
+ },
+
+ undoClipping: function(element) {
+ element = $(element);
+ if (!element._overflow) return element;
+ element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+ element._overflow = null;
+ return element;
+ },
+
+ cumulativeOffset: function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+ element = element.offsetParent;
+ } while (element);
+ return Element._returnOffset(valueL, valueT);
+ },
+
+ positionedOffset: function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+ element = element.offsetParent;
+ if (element) {
+ if (element.tagName.toUpperCase() == 'BODY') break;
+ var p = Element.getStyle(element, 'position');
+ if (p !== 'static') break;
+ }
+ } while (element);
+ return Element._returnOffset(valueL, valueT);
+ },
+
+ absolutize: function(element) {
+ element = $(element);
+ if (element.getStyle('position') == 'absolute') return element;
+ // Position.prepare(); // To be done manually by Scripty when it needs it.
+
+ var offsets = element.positionedOffset();
+ var top = offsets[1];
+ var left = offsets[0];
+ var width = element.clientWidth;
+ var height = element.clientHeight;
+
+ element._originalLeft = left - parseFloat(element.style.left || 0);
+ element._originalTop = top - parseFloat(element.style.top || 0);
+ element._originalWidth = element.style.width;
+ element._originalHeight = element.style.height;
+
+ element.style.position = 'absolute';
+ element.style.top = top + 'px';
+ element.style.left = left + 'px';
+ element.style.width = width + 'px';
+ element.style.height = height + 'px';
+ return element;
+ },
+
+ relativize: function(element) {
+ element = $(element);
+ if (element.getStyle('position') == 'relative') return element;
+ // Position.prepare(); // To be done manually by Scripty when it needs it.
+
+ element.style.position = 'relative';
+ var top = parseFloat(element.style.top || 0) - (element._originalTop || 0);
+ var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
+
+ element.style.top = top + 'px';
+ element.style.left = left + 'px';
+ element.style.height = element._originalHeight;
+ element.style.width = element._originalWidth;
+ return element;
+ },
+
+ cumulativeScrollOffset: function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.scrollTop || 0;
+ valueL += element.scrollLeft || 0;
+ element = element.parentNode;
+ } while (element);
+ return Element._returnOffset(valueL, valueT);
+ },
+
+ getOffsetParent: function(element) {
+ if (element.offsetParent) return $(element.offsetParent);
+ if (element == document.body) return $(element);
+
+ while ((element = element.parentNode) && element != document.body)
+ if (Element.getStyle(element, 'position') != 'static')
+ return $(element);
+
+ return $(document.body);
+ },
+
+ viewportOffset: function(forElement) {
+ var valueT = 0, valueL = 0;
+
+ var element = forElement;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+
+ // Safari fix
+ if (element.offsetParent == document.body &&
+ Element.getStyle(element, 'position') == 'absolute') break;
+
+ } while (element = element.offsetParent);
+
+ element = forElement;
+ do {
+ if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
+ valueT -= element.scrollTop || 0;
+ valueL -= element.scrollLeft || 0;
+ }
+ } while (element = element.parentNode);
+
+ return Element._returnOffset(valueL, valueT);
+ },
+
+ clonePosition: function(element, source) {
+ var options = Object.extend({
+ setLeft: true,
+ setTop: true,
+ setWidth: true,
+ setHeight: true,
+ offsetTop: 0,
+ offsetLeft: 0
+ }, arguments[2] || { });
+
+ // find page position of source
+ source = $(source);
+ var p = source.viewportOffset();
+
+ // find coordinate system to use
+ element = $(element);
+ var delta = [0, 0];
+ var parent = null;
+ // delta [0,0] will do fine with position: fixed elements,
+ // position:absolute needs offsetParent deltas
+ if (Element.getStyle(element, 'position') == 'absolute') {
+ parent = element.getOffsetParent();
+ delta = parent.viewportOffset();
+ }
+
+ // correct by body offsets (fixes Safari)
+ if (parent == document.body) {
+ delta[0] -= document.body.offsetLeft;
+ delta[1] -= document.body.offsetTop;
+ }
+
+ // set position
+ if (options.setLeft) element.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
+ if (options.setTop) element.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
+ if (options.setWidth) element.style.width = source.offsetWidth + 'px';
+ if (options.setHeight) element.style.height = source.offsetHeight + 'px';
+ return element;
+ }
+};
+
+Element.Methods.identify.counter = 1;
+
+Object.extend(Element.Methods, {
+ getElementsBySelector: Element.Methods.select,
+ childElements: Element.Methods.immediateDescendants
+});
+
+Element._attributeTranslations = {
+ write: {
+ names: {
+ className: 'class',
+ htmlFor: 'for'
+ },
+ values: { }
+ }
+};
+
+if (Prototype.Browser.Opera) {
+ Element.Methods.getStyle = Element.Methods.getStyle.wrap(
+ function(proceed, element, style) {
+ switch (style) {
+ case 'left': case 'top': case 'right': case 'bottom':
+ if (proceed(element, 'position') === 'static') return null;
+ case 'height': case 'width':
+ // returns '0px' for hidden elements; we want it to return null
+ if (!Element.visible(element)) return null;
+
+ // returns the border-box dimensions rather than the content-box
+ // dimensions, so we subtract padding and borders from the value
+ var dim = parseInt(proceed(element, style), 10);
+
+ if (dim !== element['offset' + style.capitalize()])
+ return dim + 'px';
+
+ var properties;
+ if (style === 'height') {
+ properties = ['border-top-width', 'padding-top',
+ 'padding-bottom', 'border-bottom-width'];
+ }
+ else {
+ properties = ['border-left-width', 'padding-left',
+ 'padding-right', 'border-right-width'];
+ }
+ return properties.inject(dim, function(memo, property) {
+ var val = proceed(element, property);
+ return val === null ? memo : memo - parseInt(val, 10);
+ }) + 'px';
+ default: return proceed(element, style);
+ }
+ }
+ );
+
+ Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
+ function(proceed, element, attribute) {
+ if (attribute === 'title') return element.title;
+ return proceed(element, attribute);
+ }
+ );
+}
+
+else if (Prototype.Browser.IE) {
+ // IE doesn't report offsets correctly for static elements, so we change them
+ // to "relative" to get the values, then change them back.
+ Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
+ function(proceed, element) {
+ element = $(element);
+ // IE throws an error if element is not in document
+ try { element.offsetParent }
+ catch(e) { return $(document.body) }
+ var position = element.getStyle('position');
+ if (position !== 'static') return proceed(element);
+ element.setStyle({ position: 'relative' });
+ var value = proceed(element);
+ element.setStyle({ position: position });
+ return value;
+ }
+ );
+
+ $w('positionedOffset viewportOffset').each(function(method) {
+ Element.Methods[method] = Element.Methods[method].wrap(
+ function(proceed, element) {
+ element = $(element);
+ try { element.offsetParent }
+ catch(e) { return Element._returnOffset(0,0) }
+ var position = element.getStyle('position');
+ if (position !== 'static') return proceed(element);
+ // Trigger hasLayout on the offset parent so that IE6 reports
+ // accurate offsetTop and offsetLeft values for position: fixed.
+ var offsetParent = element.getOffsetParent();
+ if (offsetParent && offsetParent.getStyle('position') === 'fixed')
+ offsetParent.setStyle({ zoom: 1 });
+ element.setStyle({ position: 'relative' });
+ var value = proceed(element);
+ element.setStyle({ position: position });
+ return value;
+ }
+ );
+ });
+
+ Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
+ function(proceed, element) {
+ try { element.offsetParent }
+ catch(e) { return Element._returnOffset(0,0) }
+ return proceed(element);
+ }
+ );
+
+ Element.Methods.getStyle = function(element, style) {
+ element = $(element);
+ style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
+ var value = element.style[style];
+ if (!value && element.currentStyle) value = element.currentStyle[style];
+
+ if (style == 'opacity') {
+ if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
+ if (value[1]) return parseFloat(value[1]) / 100;
+ return 1.0;
+ }
+
+ if (value == 'auto') {
+ if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
+ return element['offset' + style.capitalize()] + 'px';
+ return null;
+ }
+ return value;
+ };
+
+ Element.Methods.setOpacity = function(element, value) {
+ function stripAlpha(filter){
+ return filter.replace(/alpha\([^\)]*\)/gi,'');
+ }
+ element = $(element);
+ var currentStyle = element.currentStyle;
+ if ((currentStyle && !currentStyle.hasLayout) ||
+ (!currentStyle && element.style.zoom == 'normal'))
+ element.style.zoom = 1;
+
+ var filter = element.getStyle('filter'), style = element.style;
+ if (value == 1 || value === '') {
+ (filter = stripAlpha(filter)) ?
+ style.filter = filter : style.removeAttribute('filter');
+ return element;
+ } else if (value < 0.00001) value = 0;
+ style.filter = stripAlpha(filter) +
+ 'alpha(opacity=' + (value * 100) + ')';
+ return element;
+ };
+
+ Element._attributeTranslations = {
+ read: {
+ names: {
+ 'class': 'className',
+ 'for': 'htmlFor'
+ },
+ values: {
+ _getAttr: function(element, attribute) {
+ return element.getAttribute(attribute, 2);
+ },
+ _getAttrNode: function(element, attribute) {
+ var node = element.getAttributeNode(attribute);
+ return node ? node.value : "";
+ },
+ _getEv: function(element, attribute) {
+ attribute = element.getAttribute(attribute);
+ return attribute ? attribute.toString().slice(23, -2) : null;
+ },
+ _flag: function(element, attribute) {
+ return $(element).hasAttribute(attribute) ? attribute : null;
+ },
+ style: function(element) {
+ return element.style.cssText.toLowerCase();
+ },
+ title: function(element) {
+ return element.title;
+ }
+ }
+ }
+ };
+
+ Element._attributeTranslations.write = {
+ names: Object.extend({
+ cellpadding: 'cellPadding',
+ cellspacing: 'cellSpacing'
+ }, Element._attributeTranslations.read.names),
+ values: {
+ checked: function(element, value) {
+ element.checked = !!value;
+ },
+
+ style: function(element, value) {
+ element.style.cssText = value ? value : '';
+ }
+ }
+ };
+
+ Element._attributeTranslations.has = {};
+
+ $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
+ 'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
+ Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
+ Element._attributeTranslations.has[attr.toLowerCase()] = attr;
+ });
+
+ (function(v) {
+ Object.extend(v, {
+ href: v._getAttr,
+ src: v._getAttr,
+ type: v._getAttr,
+ action: v._getAttrNode,
+ disabled: v._flag,
+ checked: v._flag,
+ readonly: v._flag,
+ multiple: v._flag,
+ onload: v._getEv,
+ onunload: v._getEv,
+ onclick: v._getEv,
+ ondblclick: v._getEv,
+ onmousedown: v._getEv,
+ onmouseup: v._getEv,
+ onmouseover: v._getEv,
+ onmousemove: v._getEv,
+ onmouseout: v._getEv,
+ onfocus: v._getEv,
+ onblur: v._getEv,
+ onkeypress: v._getEv,
+ onkeydown: v._getEv,
+ onkeyup: v._getEv,
+ onsubmit: v._getEv,
+ onreset: v._getEv,
+ onselect: v._getEv,
+ onchange: v._getEv
+ });
+ })(Element._attributeTranslations.read.values);
+}
+
+else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
+ Element.Methods.setOpacity = function(element, value) {
+ element = $(element);
+ element.style.opacity = (value == 1) ? 0.999999 :
+ (value === '') ? '' : (value < 0.00001) ? 0 : value;
+ return element;
+ };
+}
+
+else if (Prototype.Browser.WebKit) {
+ Element.Methods.setOpacity = function(element, value) {
+ element = $(element);
+ element.style.opacity = (value == 1 || value === '') ? '' :
+ (value < 0.00001) ? 0 : value;
+
+ if (value == 1)
+ if(element.tagName.toUpperCase() == 'IMG' && element.width) {
+ element.width++; element.width--;
+ } else try {
+ var n = document.createTextNode(' ');
+ element.appendChild(n);
+ element.removeChild(n);
+ } catch (e) { }
+
+ return element;
+ };
+
+ // Safari returns margins on body which is incorrect if the child is absolutely
+ // positioned. For performance reasons, redefine Element#cumulativeOffset for
+ // KHTML/WebKit only.
+ Element.Methods.cumulativeOffset = function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+ if (element.offsetParent == document.body)
+ if (Element.getStyle(element, 'position') == 'absolute') break;
+
+ element = element.offsetParent;
+ } while (element);
+
+ return Element._returnOffset(valueL, valueT);
+ };
+}
+
+if (Prototype.Browser.IE || Prototype.Browser.Opera) {
+ // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
+ Element.Methods.update = function(element, content) {
+ element = $(element);
+
+ if (content && content.toElement) content = content.toElement();
+ if (Object.isElement(content)) return element.update().insert(content);
+
+ content = Object.toHTML(content);
+ var tagName = element.tagName.toUpperCase();
+
+ if (tagName in Element._insertionTranslations.tags) {
+ $A(element.childNodes).each(function(node) { element.removeChild(node) });
+ Element._getContentFromAnonymousElement(tagName, content.stripScripts())
+ .each(function(node) { element.appendChild(node) });
+ }
+ else element.innerHTML = content.stripScripts();
+
+ content.evalScripts.bind(content).defer();
+ return element;
+ };
+}
+
+if ('outerHTML' in document.createElement('div')) {
+ Element.Methods.replace = function(element, content) {
+ element = $(element);
+
+ if (content && content.toElement) content = content.toElement();
+ if (Object.isElement(content)) {
+ element.parentNode.replaceChild(content, element);
+ return element;
+ }
+
+ content = Object.toHTML(content);
+ var parent = element.parentNode, tagName = parent.tagName.toUpperCase();
+
+ if (Element._insertionTranslations.tags[tagName]) {
+ var nextSibling = element.next();
+ var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
+ parent.removeChild(element);
+ if (nextSibling)
+ fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
+ else
+ fragments.each(function(node) { parent.appendChild(node) });
+ }
+ else element.outerHTML = content.stripScripts();
+
+ content.evalScripts.bind(content).defer();
+ return element;
+ };
+}
+
+Element._returnOffset = function(l, t) {
+ var result = [l, t];
+ result.left = l;
+ result.top = t;
+ return result;
+};
+
+Element._getContentFromAnonymousElement = function(tagName, html) {
+ var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
+ if (t) {
+ div.innerHTML = t[0] + html + t[1];
+ t[2].times(function() { div = div.firstChild });
+ } else div.innerHTML = html;
+ return $A(div.childNodes);
+};
+
+Element._insertionTranslations = {
+ before: function(element, node) {
+ element.parentNode.insertBefore(node, element);
+ },
+ top: function(element, node) {
+ element.insertBefore(node, element.firstChild);
+ },
+ bottom: function(element, node) {
+ element.appendChild(node);
+ },
+ after: function(element, node) {
+ element.parentNode.insertBefore(node, element.nextSibling);
+ },
+ tags: {
+ TABLE: ['<table>', '</table>', 1],
+ TBODY: ['<table><tbody>', '</tbody></table>', 2],
+ TR: ['<table><tbody><tr>', '</tr></tbody></table>', 3],
+ TD: ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
+ SELECT: ['<select>', '</select>', 1]
+ }
+};
+
+(function() {
+ Object.extend(this.tags, {
+ THEAD: this.tags.TBODY,
+ TFOOT: this.tags.TBODY,
+ TH: this.tags.TD
+ });
+}).call(Element._insertionTranslations);
+
+Element.Methods.Simulated = {
+ hasAttribute: function(element, attribute) {
+ attribute = Element._attributeTranslations.has[attribute] || attribute;
+ var node = $(element).getAttributeNode(attribute);
+ return !!(node && node.specified);
+ }
+};
+
+Element.Methods.ByTag = { };
+
+Object.extend(Element, Element.Methods);
+
+if (!Prototype.BrowserFeatures.ElementExtensions &&
+ document.createElement('div')['__proto__']) {
+ window.HTMLElement = { };
+ window.HTMLElement.prototype = document.createElement('div')['__proto__'];
+ Prototype.BrowserFeatures.ElementExtensions = true;
+}
+
+Element.extend = (function() {
+ if (Prototype.BrowserFeatures.SpecificElementExtensions)
+ return Prototype.K;
+
+ var Methods = { }, ByTag = Element.Methods.ByTag;
+
+ var extend = Object.extend(function(element) {
+ if (!element || element._extendedByPrototype ||
+ element.nodeType != 1 || element == window) return element;
+
+ var methods = Object.clone(Methods),
+ tagName = element.tagName.toUpperCase(), property, value;
+
+ // extend methods for specific tags
+ if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
+
+ for (property in methods) {
+ value = methods[property];
+ if (Object.isFunction(value) && !(property in element))
+ element[property] = value.methodize();
+ }
+
+ element._extendedByPrototype = Prototype.emptyFunction;
+ return element;
+
+ }, {
+ refresh: function() {
+ // extend methods for all tags (Safari doesn't need this)
+ if (!Prototype.BrowserFeatures.ElementExtensions) {
+ Object.extend(Methods, Element.Methods);
+ Object.extend(Methods, Element.Methods.Simulated);
+ }
+ }
+ });
+
+ extend.refresh();
+ return extend;
+})();
+
+Element.hasAttribute = function(element, attribute) {
+ if (element.hasAttribute) return element.hasAttribute(attribute);
+ return Element.Methods.Simulated.hasAttribute(element, attribute);
+};
+
+Element.addMethods = function(methods) {
+ var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
+
+ if (!methods) {
+ Object.extend(Form, Form.Methods);
+ Object.extend(Form.Element, Form.Element.Methods);
+ Object.extend(Element.Methods.ByTag, {
+ "FORM": Object.clone(Form.Methods),
+ "INPUT": Object.clone(Form.Element.Methods),
+ "SELECT": Object.clone(Form.Element.Methods),
+ "TEXTAREA": Object.clone(Form.Element.Methods)
+ });
+ }
+
+ if (arguments.length == 2) {
+ var tagName = methods;
+ methods = arguments[1];
+ }
+
+ if (!tagName) Object.extend(Element.Methods, methods || { });
+ else {
+ if (Object.isArray(tagName)) tagName.each(extend);
+ else extend(tagName);
+ }
+
+ function extend(tagName) {
+ tagName = tagName.toUpperCase();
+ if (!Element.Methods.ByTag[tagName])
+ Element.Methods.ByTag[tagName] = { };
+ Object.extend(Element.Methods.ByTag[tagName], methods);
+ }
+
+ function copy(methods, destination, onlyIfAbsent) {
+ onlyIfAbsent = onlyIfAbsent || false;
+ for (var property in methods) {
+ var value = methods[property];
+ if (!Object.isFunction(value)) continue;
+ if (!onlyIfAbsent || !(property in destination))
+ destination[property] = value.methodize();
+ }
+ }
+
+ function findDOMClass(tagName) {
+ var klass;
+ var trans = {
+ "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
+ "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
+ "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
+ "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
+ "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
+ "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
+ "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
+ "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
+ "FrameSet", "IFRAME": "IFrame"
+ };
+ if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
+ if (window[klass]) return window[klass];
+ klass = 'HTML' + tagName + 'Element';
+ if (window[klass]) return window[klass];
+ klass = 'HTML' + tagName.capitalize() + 'Element';
+ if (window[klass]) return window[klass];
+
+ window[klass] = { };
+ window[klass].prototype = document.createElement(tagName)['__proto__'];
+ return window[klass];
+ }
+
+ if (F.ElementExtensions) {
+ copy(Element.Methods, HTMLElement.prototype);
+ copy(Element.Methods.Simulated, HTMLElement.prototype, true);
+ }
+
+ if (F.SpecificElementExtensions) {
+ for (var tag in Element.Methods.ByTag) {
+ var klass = findDOMClass(tag);
+ if (Object.isUndefined(klass)) continue;
+ copy(T[tag], klass.prototype);
+ }
+ }
+
+ Object.extend(Element, Element.Methods);
+ delete Element.ByTag;
+
+ if (Element.extend.refresh) Element.extend.refresh();
+ Element.cache = { };
+};
+
+document.viewport = {
+ getDimensions: function() {
+ var dimensions = { }, B = Prototype.Browser;
+ $w('width height').each(function(d) {
+ var D = d.capitalize();
+ if (B.WebKit && !document.evaluate) {
+ // Safari <3.0 needs self.innerWidth/Height
+ dimensions[d] = self['inner' + D];
+ } else if (B.Opera && parseFloat(window.opera.version()) < 9.5) {
+ // Opera <9.5 needs document.body.clientWidth/Height
+ dimensions[d] = document.body['client' + D]
+ } else {
+ dimensions[d] = document.documentElement['client' + D];
+ }
+ });
+ return dimensions;
+ },
+
+ getWidth: function() {
+ return this.getDimensions().width;
+ },
+
+ getHeight: function() {
+ return this.getDimensions().height;
+ },
+
+ getScrollOffsets: function() {
+ return Element._returnOffset(
+ window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
+ window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
+ }
+};
+/* Portions of the Selector class are derived from Jack Slocum's DomQuery,
+ * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
+ * license. Please see http://www.yui-ext.com/ for more information. */
+
+var Selector = Class.create({
+ initialize: function(expression) {
+ this.expression = expression.strip();
+
+ if (this.shouldUseSelectorsAPI()) {
+ this.mode = 'selectorsAPI';
+ } else if (this.shouldUseXPath()) {
+ this.mode = 'xpath';
+ this.compileXPathMatcher();
+ } else {
+ this.mode = "normal";
+ this.compileMatcher();
+ }
+
+ },
+
+ shouldUseXPath: function() {
+ if (!Prototype.BrowserFeatures.XPath) return false;
+
+ var e = this.expression;
+
+ // Safari 3 chokes on :*-of-type and :empty
+ if (Prototype.Browser.WebKit &&
+ (e.include("-of-type") || e.include(":empty")))
+ return false;
+
+ // XPath can't do namespaced attributes, nor can it read
+ // the "checked" property from DOM nodes
+ if ((/(\[[\w-]*?:|:checked)/).test(e))
+ return false;
+
+ return true;
+ },
+
+ shouldUseSelectorsAPI: function() {
+ if (!Prototype.BrowserFeatures.SelectorsAPI) return false;
+
+ if (!Selector._div) Selector._div = new Element('div');
+
+ // Make sure the browser treats the selector as valid. Test on an
+ // isolated element to minimize cost of this check.
+ try {
+ Selector._div.querySelector(this.expression);
+ } catch(e) {
+ return false;
+ }
+
+ return true;
+ },
+
+ compileMatcher: function() {
+ var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
+ c = Selector.criteria, le, p, m;
+
+ if (Selector._cache[e]) {
+ this.matcher = Selector._cache[e];
+ return;
+ }
+
+ this.matcher = ["this.matcher = function(root) {",
+ "var r = root, h = Selector.handlers, c = false, n;"];
+
+ while (e && le != e && (/\S/).test(e)) {
+ le = e;
+ for (var i in ps) {
+ p = ps[i];
+ if (m = e.match(p)) {
+ this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
+ new Template(c[i]).evaluate(m));
+ e = e.replace(m[0], '');
+ break;
+ }
+ }
+ }
+
+ this.matcher.push("return h.unique(n);\n}");
+ eval(this.matcher.join('\n'));
+ Selector._cache[this.expression] = this.matcher;
+ },
+
+ compileXPathMatcher: function() {
+ var e = this.expression, ps = Selector.patterns,
+ x = Selector.xpath, le, m;
+
+ if (Selector._cache[e]) {
+ this.xpath = Selector._cache[e]; return;
+ }
+
+ this.matcher = ['.//*'];
+ while (e && le != e && (/\S/).test(e)) {
+ le = e;
+ for (var i in ps) {
+ if (m = e.match(ps[i])) {
+ this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
+ new Template(x[i]).evaluate(m));
+ e = e.replace(m[0], '');
+ break;
+ }
+ }
+ }
+
+ this.xpath = this.matcher.join('');
+ Selector._cache[this.expression] = this.xpath;
+ },
+
+ findElements: function(root) {
+ root = root || document;
+ var e = this.expression, results;
+
+ switch (this.mode) {
+ case 'selectorsAPI':
+ // querySelectorAll queries document-wide, then filters to descendants
+ // of the context element. That's not what we want.
+ // Add an explicit context to the selector if necessary.
+ if (root !== document) {
+ var oldId = root.id, id = $(root).identify();
+ e = "#" + id + " " + e;
+ }
+
+ results = $A(root.querySelectorAll(e)).map(Element.extend);
+ root.id = oldId;
+
+ return results;
+ case 'xpath':
+ return document._getElementsByXPath(this.xpath, root);
+ default:
+ return this.matcher(root);
+ }
+ },
+
+ match: function(element) {
+ this.tokens = [];
+
+ var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
+ var le, p, m;
+
+ while (e && le !== e && (/\S/).test(e)) {
+ le = e;
+ for (var i in ps) {
+ p = ps[i];
+ if (m = e.match(p)) {
+ // use the Selector.assertions methods unless the selector
+ // is too complex.
+ if (as[i]) {
+ this.tokens.push([i, Object.clone(m)]);
+ e = e.replace(m[0], '');
+ } else {
+ // reluctantly do a document-wide search
+ // and look for a match in the array
+ return this.findElements(document).include(element);
+ }
+ }
+ }
+ }
+
+ var match = true, name, matches;
+ for (var i = 0, token; token = this.tokens[i]; i++) {
+ name = token[0], matches = token[1];
+ if (!Selector.assertions[name](element, matches)) {
+ match = false; break;
+ }
+ }
+
+ return match;
+ },
+
+ toString: function() {
+ return this.expression;
+ },
+
+ inspect: function() {
+ return "#<Selector:" + this.expression.inspect() + ">";
+ }
+});
+
+Object.extend(Selector, {
+ _cache: { },
+
+ xpath: {
+ descendant: "//*",
+ child: "/*",
+ adjacent: "/following-sibling::*[1]",
+ laterSibling: '/following-sibling::*',
+ tagName: function(m) {
+ if (m[1] == '*') return '';
+ return "[local-name()='" + m[1].toLowerCase() +
+ "' or local-name()='" + m[1].toUpperCase() + "']";
+ },
+ className: "[contains(concat(' ', @class, ' '), ' #{1} ')]",
+ id: "[@id='#{1}']",
+ attrPresence: function(m) {
+ m[1] = m[1].toLowerCase();
+ return new Template("[@#{1}]").evaluate(m);
+ },
+ attr: function(m) {
+ m[1] = m[1].toLowerCase();
+ m[3] = m[5] || m[6];
+ return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
+ },
+ pseudo: function(m) {
+ var h = Selector.xpath.pseudos[m[1]];
+ if (!h) return '';
+ if (Object.isFunction(h)) return h(m);
+ return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
+ },
+ operators: {
+ '=': "[@#{1}='#{3}']",
+ '!=': "[@#{1}!='#{3}']",
+ '^=': "[starts-with(@#{1}, '#{3}')]",
+ '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
+ '*=': "[contains(@#{1}, '#{3}')]",
+ '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
+ '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
+ },
+ pseudos: {
+ 'first-child': '[not(preceding-sibling::*)]',
+ 'last-child': '[not(following-sibling::*)]',
+ 'only-child': '[not(preceding-sibling::* or following-sibling::*)]',
+ 'empty': "[count(*) = 0 and (count(text()) = 0)]",
+ 'checked': "[@checked]",
+ 'disabled': "[(@disabled) and (@type!='hidden')]",
+ 'enabled': "[not(@disabled) and (@type!='hidden')]",
+ 'not': function(m) {
+ var e = m[6], p = Selector.patterns,
+ x = Selector.xpath, le, v;
+
+ var exclusion = [];
+ while (e && le != e && (/\S/).test(e)) {
+ le = e;
+ for (var i in p) {
+ if (m = e.match(p[i])) {
+ v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
+ exclusion.push("(" + v.substring(1, v.length - 1) + ")");
+ e = e.replace(m[0], '');
+ break;
+ }
+ }
+ }
+ return "[not(" + exclusion.join(" and ") + ")]";
+ },
+ 'nth-child': function(m) {
+ return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
+ },
+ 'nth-last-child': function(m) {
+ return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
+ },
+ 'nth-of-type': function(m) {
+ return Selector.xpath.pseudos.nth("position() ", m);
+ },
+ 'nth-last-of-type': function(m) {
+ return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
+ },
+ 'first-of-type': function(m) {
+ m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
+ },
+ 'last-of-type': function(m) {
+ m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
+ },
+ 'only-of-type': function(m) {
+ var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
+ },
+ nth: function(fragment, m) {
+ var mm, formula = m[6], predicate;
+ if (formula == 'even') formula = '2n+0';
+ if (formula == 'odd') formula = '2n+1';
+ if (mm = formula.match(/^(\d+)$/)) // digit only
+ return '[' + fragment + "= " + mm[1] + ']';
+ if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+ if (mm[1] == "-") mm[1] = -1;
+ var a = mm[1] ? Number(mm[1]) : 1;
+ var b = mm[2] ? Number(mm[2]) : 0;
+ predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
+ "((#{fragment} - #{b}) div #{a} >= 0)]";
+ return new Template(predicate).evaluate({
+ fragment: fragment, a: a, b: b });
+ }
+ }
+ }
+ },
+
+ criteria: {
+ tagName: 'n = h.tagName(n, r, "#{1}", c); c = false;',
+ className: 'n = h.className(n, r, "#{1}", c); c = false;',
+ id: 'n = h.id(n, r, "#{1}", c); c = false;',
+ attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
+ attr: function(m) {
+ m[3] = (m[5] || m[6]);
+ return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
+ },
+ pseudo: function(m) {
+ if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
+ return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
+ },
+ descendant: 'c = "descendant";',
+ child: 'c = "child";',
+ adjacent: 'c = "adjacent";',
+ laterSibling: 'c = "laterSibling";'
+ },
+
+ patterns: {
+ // combinators must be listed first
+ // (and descendant needs to be last combinator)
+ laterSibling: /^\s*~\s*/,
+ child: /^\s*>\s*/,
+ adjacent: /^\s*\+\s*/,
+ descendant: /^\s/,
+
+ // selectors follow
+ tagName: /^\s*(\*|[\w\-]+)(\b|$)?/,
+ id: /^#([\w\-\*]+)(\b|$)/,
+ className: /^\.([\w\-\*]+)(\b|$)/,
+ pseudo:
+/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
+ attrPresence: /^\[((?:[\w]+:)?[\w]+)\]/,
+ attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
+ },
+
+ // for Selector.match and Element#match
+ assertions: {
+ tagName: function(element, matches) {
+ return matches[1].toUpperCase() == element.tagName.toUpperCase();
+ },
+
+ className: function(element, matches) {
+ return Element.hasClassName(element, matches[1]);
+ },
+
+ id: function(element, matches) {
+ return element.id === matches[1];
+ },
+
+ attrPresence: function(element, matches) {
+ return Element.hasAttribute(element, matches[1]);
+ },
+
+ attr: function(element, matches) {
+ var nodeValue = Element.readAttribute(element, matches[1]);
+ return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
+ }
+ },
+
+ handlers: {
+ // UTILITY FUNCTIONS
+ // joins two collections
+ concat: function(a, b) {
+ for (var i = 0, node; node = b[i]; i++)
+ a.push(node);
+ return a;
+ },
+
+ // marks an array of nodes for counting
+ mark: function(nodes) {
+ var _true = Prototype.emptyFunction;
+ for (var i = 0, node; node = nodes[i]; i++)
+ node._countedByPrototype = _true;
+ return nodes;
+ },
+
+ unmark: function(nodes) {
+ for (var i = 0, node; node = nodes[i]; i++)
+ node._countedByPrototype = undefined;
+ return nodes;
+ },
+
+ // mark each child node with its position (for nth calls)
+ // "ofType" flag indicates whether we're indexing for nth-of-type
+ // rather than nth-child
+ index: function(parentNode, reverse, ofType) {
+ parentNode._countedByPrototype = Prototype.emptyFunction;
+ if (reverse) {
+ for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
+ var node = nodes[i];
+ if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
+ }
+ } else {
+ for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
+ if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
+ }
+ },
+
+ // filters out duplicates and extends all nodes
+ unique: function(nodes) {
+ if (nodes.length == 0) return nodes;
+ var results = [], n;
+ for (var i = 0, l = nodes.length; i < l; i++)
+ if (!(n = nodes[i])._countedByPrototype) {
+ n._countedByPrototype = Prototype.emptyFunction;
+ results.push(Element.extend(n));
+ }
+ return Selector.handlers.unmark(results);
+ },
+
+ // COMBINATOR FUNCTIONS
+ descendant: function(nodes) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ h.concat(results, node.getElementsByTagName('*'));
+ return results;
+ },
+
+ child: function(nodes) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ for (var j = 0, child; child = node.childNodes[j]; j++)
+ if (child.nodeType == 1 && child.tagName != '!') results.push(child);
+ }
+ return results;
+ },
+
+ adjacent: function(nodes) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ var next = this.nextElementSibling(node);
+ if (next) results.push(next);
+ }
+ return results;
+ },
+
+ laterSibling: function(nodes) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ h.concat(results, Element.nextSiblings(node));
+ return results;
+ },
+
+ nextElementSibling: function(node) {
+ while (node = node.nextSibling)
+ if (node.nodeType == 1) return node;
+ return null;
+ },
+
+ previousElementSibling: function(node) {
+ while (node = node.previousSibling)
+ if (node.nodeType == 1) return node;
+ return null;
+ },
+
+ // TOKEN FUNCTIONS
+ tagName: function(nodes, root, tagName, combinator) {
+ var uTagName = tagName.toUpperCase();
+ var results = [], h = Selector.handlers;
+ if (nodes) {
+ if (combinator) {
+ // fastlane for ordinary descendant combinators
+ if (combinator == "descendant") {
+ for (var i = 0, node; node = nodes[i]; i++)
+ h.concat(results, node.getElementsByTagName(tagName));
+ return results;
+ } else nodes = this[combinator](nodes);
+ if (tagName == "*") return nodes;
+ }
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (node.tagName.toUpperCase() === uTagName) results.push(node);
+ return results;
+ } else return root.getElementsByTagName(tagName);
+ },
+
+ id: function(nodes, root, id, combinator) {
+ var targetNode = $(id), h = Selector.handlers;
+ if (!targetNode) return [];
+ if (!nodes && root == document) return [targetNode];
+ if (nodes) {
+ if (combinator) {
+ if (combinator == 'child') {
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (targetNode.parentNode == node) return [targetNode];
+ } else if (combinator == 'descendant') {
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (Element.descendantOf(targetNode, node)) return [targetNode];
+ } else if (combinator == 'adjacent') {
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (Selector.handlers.previousElementSibling(targetNode) == node)
+ return [targetNode];
+ } else nodes = h[combinator](nodes);
+ }
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (node == targetNode) return [targetNode];
+ return [];
+ }
+ return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
+ },
+
+ className: function(nodes, root, className, combinator) {
+ if (nodes && combinator) nodes = this[combinator](nodes);
+ return Selector.handlers.byClassName(nodes, root, className);
+ },
+
+ byClassName: function(nodes, root, className) {
+ if (!nodes) nodes = Selector.handlers.descendant([root]);
+ var needle = ' ' + className + ' ';
+ for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
+ nodeClassName = node.className;
+ if (nodeClassName.length == 0) continue;
+ if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
+ results.push(node);
+ }
+ return results;
+ },
+
+ attrPresence: function(nodes, root, attr, combinator) {
+ if (!nodes) nodes = root.getElementsByTagName("*");
+ if (nodes && combinator) nodes = this[combinator](nodes);
+ var results = [];
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (Element.hasAttribute(node, attr)) results.push(node);
+ return results;
+ },
+
+ attr: function(nodes, root, attr, value, operator, combinator) {
+ if (!nodes) nodes = root.getElementsByTagName("*");
+ if (nodes && combinator) nodes = this[combinator](nodes);
+ var handler = Selector.operators[operator], results = [];
+ for (var i = 0, node; node = nodes[i]; i++) {
+ var nodeValue = Element.readAttribute(node, attr);
+ if (nodeValue === null) continue;
+ if (handler(nodeValue, value)) results.push(node);
+ }
+ return results;
+ },
+
+ pseudo: function(nodes, name, value, root, combinator) {
+ if (nodes && combinator) nodes = this[combinator](nodes);
+ if (!nodes) nodes = root.getElementsByTagName("*");
+ return Selector.pseudos[name](nodes, value, root);
+ }
+ },
+
+ pseudos: {
+ 'first-child': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ if (Selector.handlers.previousElementSibling(node)) continue;
+ results.push(node);
+ }
+ return results;
+ },
+ 'last-child': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ if (Selector.handlers.nextElementSibling(node)) continue;
+ results.push(node);
+ }
+ return results;
+ },
+ 'only-child': function(nodes, value, root) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
+ results.push(node);
+ return results;
+ },
+ 'nth-child': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root);
+ },
+ 'nth-last-child': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root, true);
+ },
+ 'nth-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root, false, true);
+ },
+ 'nth-last-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root, true, true);
+ },
+ 'first-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, "1", root, false, true);
+ },
+ 'last-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, "1", root, true, true);
+ },
+ 'only-of-type': function(nodes, formula, root) {
+ var p = Selector.pseudos;
+ return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
+ },
+
+ // handles the an+b logic
+ getIndices: function(a, b, total) {
+ if (a == 0) return b > 0 ? [b] : [];
+ return $R(1, total).inject([], function(memo, i) {
+ if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
+ return memo;
+ });
+ },
+
+ // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
+ nth: function(nodes, formula, root, reverse, ofType) {
+ if (nodes.length == 0) return [];
+ if (formula == 'even') formula = '2n+0';
+ if (formula == 'odd') formula = '2n+1';
+ var h = Selector.handlers, results = [], indexed = [], m;
+ h.mark(nodes);
+ for (var i = 0, node; node = nodes[i]; i++) {
+ if (!node.parentNode._countedByPrototype) {
+ h.index(node.parentNode, reverse, ofType);
+ indexed.push(node.parentNode);
+ }
+ }
+ if (formula.match(/^\d+$/)) { // just a number
+ formula = Number(formula);
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (node.nodeIndex == formula) results.push(node);
+ } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+ if (m[1] == "-") m[1] = -1;
+ var a = m[1] ? Number(m[1]) : 1;
+ var b = m[2] ? Number(m[2]) : 0;
+ var indices = Selector.pseudos.getIndices(a, b, nodes.length);
+ for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
+ for (var j = 0; j < l; j++)
+ if (node.nodeIndex == indices[j]) results.push(node);
+ }
+ }
+ h.unmark(nodes);
+ h.unmark(indexed);
+ return results;
+ },
+
+ 'empty': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ // IE treats comments as element nodes
+ if (node.tagName == '!' || node.firstChild) continue;
+ results.push(node);
+ }
+ return results;
+ },
+
+ 'not': function(nodes, selector, root) {
+ var h = Selector.handlers, selectorType, m;
+ var exclusions = new Selector(selector).findElements(root);
+ h.mark(exclusions);
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (!node._countedByPrototype) results.push(node);
+ h.unmark(exclusions);
+ return results;
+ },
+
+ 'enabled': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (!node.disabled && (!node.type || node.type !== 'hidden'))
+ results.push(node);
+ return results;
+ },
+
+ 'disabled': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (node.disabled) results.push(node);
+ return results;
+ },
+
+ 'checked': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (node.checked) results.push(node);
+ return results;
+ }
+ },
+
+ operators: {
+ '=': function(nv, v) { return nv == v; },
+ '!=': function(nv, v) { return nv != v; },
+ '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
+ '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
+ '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
+ '$=': function(nv, v) { return nv.endsWith(v); },
+ '*=': function(nv, v) { return nv.include(v); },
+ '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
+ '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
+ '-').include('-' + (v || "").toUpperCase() + '-'); }
+ },
+
+ split: function(expression) {
+ var expressions = [];
+ expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
+ expressions.push(m[1].strip());
+ });
+ return expressions;
+ },
+
+ matchElements: function(elements, expression) {
+ var matches = $$(expression), h = Selector.handlers;
+ h.mark(matches);
+ for (var i = 0, results = [], element; element = elements[i]; i++)
+ if (element._countedByPrototype) results.push(element);
+ h.unmark(matches);
+ return results;
+ },
+
+ findElement: function(elements, expression, index) {
+ if (Object.isNumber(expression)) {
+ index = expression; expression = false;
+ }
+ return Selector.matchElements(elements, expression || '*')[index || 0];
+ },
+
+ findChildElements: function(element, expressions) {
+ expressions = Selector.split(expressions.join(','));
+ var results = [], h = Selector.handlers;
+ for (var i = 0, l = expressions.length, selector; i < l; i++) {
+ selector = new Selector(expressions[i].strip());
+ h.concat(results, selector.findElements(element));
+ }
+ return (l > 1) ? h.unique(results) : results;
+ }
+});
+
+if (Prototype.Browser.IE) {
+ Object.extend(Selector.handlers, {
+ // IE returns comment nodes on getElementsByTagName("*").
+ // Filter them out.
+ concat: function(a, b) {
+ for (var i = 0, node; node = b[i]; i++)
+ if (node.tagName !== "!") a.push(node);
+ return a;
+ },
+
+ // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
+ unmark: function(nodes) {
+ for (var i = 0, node; node = nodes[i]; i++)
+ node.removeAttribute('_countedByPrototype');
+ return nodes;
+ }
+ });
+}
+
+function $$() {
+ return Selector.findChildElements(document, $A(arguments));
+}
+var Form = {
+ reset: function(form) {
+ $(form).reset();
+ return form;
+ },
+
+ serializeElements: function(elements, options) {
+ if (typeof options != 'object') options = { hash: !!options };
+ else if (Object.isUndefined(options.hash)) options.hash = true;
+ var key, value, submitted = false, submit = options.submit;
+
+ var data = elements.inject({ }, function(result, element) {
+ if (!element.disabled && element.name) {
+ key = element.name; value = $(element).getValue();
+ if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
+ submit !== false && (!submit || key == submit) && (submitted = true)))) {
+ if (key in result) {
+ // a key is already present; construct an array of values
+ if (!Object.isArray(result[key])) result[key] = [result[key]];
+ result[key].push(value);
+ }
+ else result[key] = value;
+ }
+ }
+ return result;
+ });
+
+ return options.hash ? data : Object.toQueryString(data);
+ }
+};
+
+Form.Methods = {
+ serialize: function(form, options) {
+ return Form.serializeElements(Form.getElements(form), options);
+ },
+
+ getElements: function(form) {
+ return $A($(form).getElementsByTagName('*')).inject([],
+ function(elements, child) {
+ if (Form.Element.Serializers[child.tagName.toLowerCase()])
+ elements.push(Element.extend(child));
+ return elements;
+ }
+ );
+ },
+
+ getInputs: function(form, typeName, name) {
+ form = $(form);
+ var inputs = form.getElementsByTagName('input');
+
+ if (!typeName && !name) return $A(inputs).map(Element.extend);
+
+ for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
+ var input = inputs[i];
+ if ((typeName && input.type != typeName) || (name && input.name != name))
+ continue;
+ matchingInputs.push(Element.extend(input));
+ }
+
+ return matchingInputs;
+ },
+
+ disable: function(form) {
+ form = $(form);
+ Form.getElements(form).invoke('disable');
+ return form;
+ },
+
+ enable: function(form) {
+ form = $(form);
+ Form.getElements(form).invoke('enable');
+ return form;
+ },
+
+ findFirstElement: function(form) {
+ var elements = $(form).getElements().findAll(function(element) {
+ return 'hidden' != element.type && !element.disabled;
+ });
+ var firstByIndex = elements.findAll(function(element) {
+ return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
+ }).sortBy(function(element) { return element.tabIndex }).first();
+
+ return firstByIndex ? firstByIndex : elements.find(function(element) {
+ return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+ });
+ },
+
+ focusFirstElement: function(form) {
+ form = $(form);
+ form.findFirstElement().activate();
+ return form;
+ },
+
+ request: function(form, options) {
+ form = $(form), options = Object.clone(options || { });
+
+ var params = options.parameters, action = form.readAttribute('action') || '';
+ if (action.blank()) action = window.location.href;
+ options.parameters = form.serialize(true);
+
+ if (params) {
+ if (Object.isString(params)) params = params.toQueryParams();
+ Object.extend(options.parameters, params);
+ }
+
+ if (form.hasAttribute('method') && !options.method)
+ options.method = form.method;
+
+ return new Ajax.Request(action, options);
+ }
+};
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element = {
+ focus: function(element) {
+ $(element).focus();
+ return element;
+ },
+
+ select: function(element) {
+ $(element).select();
+ return element;
+ }
+};
+
+Form.Element.Methods = {
+ serialize: function(element) {
+ element = $(element);
+ if (!element.disabled && element.name) {
+ var value = element.getValue();
+ if (value != undefined) {
+ var pair = { };
+ pair[element.name] = value;
+ return Object.toQueryString(pair);
+ }
+ }
+ return '';
+ },
+
+ getValue: function(element) {
+ element = $(element);
+ var method = element.tagName.toLowerCase();
+ return Form.Element.Serializers[method](element);
+ },
+
+ setValue: function(element, value) {
+ element = $(element);
+ var method = element.tagName.toLowerCase();
+ Form.Element.Serializers[method](element, value);
+ return element;
+ },
+
+ clear: function(element) {
+ $(element).value = '';
+ return element;
+ },
+
+ present: function(element) {
+ return $(element).value != '';
+ },
+
+ activate: function(element) {
+ element = $(element);
+ try {
+ element.focus();
+ if (element.select && (element.tagName.toLowerCase() != 'input' ||
+ !['button', 'reset', 'submit'].include(element.type)))
+ element.select();
+ } catch (e) { }
+ return element;
+ },
+
+ disable: function(element) {
+ element = $(element);
+ element.disabled = true;
+ return element;
+ },
+
+ enable: function(element) {
+ element = $(element);
+ element.disabled = false;
+ return element;
+ }
+};
+
+/*--------------------------------------------------------------------------*/
+
+var Field = Form.Element;
+var $F = Form.Element.Methods.getValue;
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element.Serializers = {
+ input: function(element, value) {
+ switch (element.type.toLowerCase()) {
+ case 'checkbox':
+ case 'radio':
+ return Form.Element.Serializers.inputSelector(element, value);
+ default:
+ return Form.Element.Serializers.textarea(element, value);
+ }
+ },
+
+ inputSelector: function(element, value) {
+ if (Object.isUndefined(value)) return element.checked ? element.value : null;
+ else element.checked = !!value;
+ },
+
+ textarea: function(element, value) {
+ if (Object.isUndefined(value)) return element.value;
+ else element.value = value;
+ },
+
+ select: function(element, value) {
+ if (Object.isUndefined(value))
+ return this[element.type == 'select-one' ?
+ 'selectOne' : 'selectMany'](element);
+ else {
+ var opt, currentValue, single = !Object.isArray(value);
+ for (var i = 0, length = element.length; i < length; i++) {
+ opt = element.options[i];
+ currentValue = this.optionValue(opt);
+ if (single) {
+ if (currentValue == value) {
+ opt.selected = true;
+ return;
+ }
+ }
+ else opt.selected = value.include(currentValue);
+ }
+ }
+ },
+
+ selectOne: function(element) {
+ var index = element.selectedIndex;
+ return index >= 0 ? this.optionValue(element.options[index]) : null;
+ },
+
+ selectMany: function(element) {
+ var values, length = element.length;
+ if (!length) return null;
+
+ for (var i = 0, values = []; i < length; i++) {
+ var opt = element.options[i];
+ if (opt.selected) values.push(this.optionValue(opt));
+ }
+ return values;
+ },
+
+ optionValue: function(opt) {
+ // extend element because hasAttribute may not be native
+ return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
+ }
+};
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
+ initialize: function($super, element, frequency, callback) {
+ $super(callback, frequency);
+ this.element = $(element);
+ this.lastValue = this.getValue();
+ },
+
+ execute: function() {
+ var value = this.getValue();
+ if (Object.isString(this.lastValue) && Object.isString(value) ?
+ this.lastValue != value : String(this.lastValue) != String(value)) {
+ this.callback(this.element, value);
+ this.lastValue = value;
+ }
+ }
+});
+
+Form.Element.Observer = Class.create(Abstract.TimedObserver, {
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.Observer = Class.create(Abstract.TimedObserver, {
+ getValue: function() {
+ return Form.serialize(this.element);
+ }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.EventObserver = Class.create({
+ initialize: function(element, callback) {
+ this.element = $(element);
+ this.callback = callback;
+
+ this.lastValue = this.getValue();
+ if (this.element.tagName.toLowerCase() == 'form')
+ this.registerFormCallbacks();
+ else
+ this.registerCallback(this.element);
+ },
+
+ onElementEvent: function() {
+ var value = this.getValue();
+ if (this.lastValue != value) {
+ this.callback(this.element, value);
+ this.lastValue = value;
+ }
+ },
+
+ registerFormCallbacks: function() {
+ Form.getElements(this.element).each(this.registerCallback, this);
+ },
+
+ registerCallback: function(element) {
+ if (element.type) {
+ switch (element.type.toLowerCase()) {
+ case 'checkbox':
+ case 'radio':
+ Event.observe(element, 'click', this.onElementEvent.bind(this));
+ break;
+ default:
+ Event.observe(element, 'change', this.onElementEvent.bind(this));
+ break;
+ }
+ }
+ }
+});
+
+Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.EventObserver = Class.create(Abstract.EventObserver, {
+ getValue: function() {
+ return Form.serialize(this.element);
+ }
+});
+if (!window.Event) var Event = { };
+
+Object.extend(Event, {
+ KEY_BACKSPACE: 8,
+ KEY_TAB: 9,
+ KEY_RETURN: 13,
+ KEY_ESC: 27,
+ KEY_LEFT: 37,
+ KEY_UP: 38,
+ KEY_RIGHT: 39,
+ KEY_DOWN: 40,
+ KEY_DELETE: 46,
+ KEY_HOME: 36,
+ KEY_END: 35,
+ KEY_PAGEUP: 33,
+ KEY_PAGEDOWN: 34,
+ KEY_INSERT: 45,
+
+ cache: { },
+
+ relatedTarget: function(event) {
+ var element;
+ switch(event.type) {
+ case 'mouseover': element = event.fromElement; break;
+ case 'mouseout': element = event.toElement; break;
+ default: return null;
+ }
+ return Element.extend(element);
+ }
+});
+
+Event.Methods = (function() {
+ var isButton;
+
+ if (Prototype.Browser.IE) {
+ var buttonMap = { 0: 1, 1: 4, 2: 2 };
+ isButton = function(event, code) {
+ return event.button == buttonMap[code];
+ };
+
+ } else if (Prototype.Browser.WebKit) {
+ isButton = function(event, code) {
+ switch (code) {
+ case 0: return event.which == 1 && !event.metaKey;
+ case 1: return event.which == 1 && event.metaKey;
+ default: return false;
+ }
+ };
+
+ } else {
+ isButton = function(event, code) {
+ return event.which ? (event.which === code + 1) : (event.button === code);
+ };
+ }
+
+ return {
+ isLeftClick: function(event) { return isButton(event, 0) },
+ isMiddleClick: function(event) { return isButton(event, 1) },
+ isRightClick: function(event) { return isButton(event, 2) },
+
+ element: function(event) {
+ event = Event.extend(event);
+
+ var node = event.target,
+ type = event.type,
+ currentTarget = event.currentTarget;
+
+ if (currentTarget && currentTarget.tagName) {
+ // Firefox screws up the "click" event when moving between radio buttons
+ // via arrow keys. It also screws up the "load" and "error" events on images,
+ // reporting the document as the target instead of the original image.
+ if (type === 'load' || type === 'error' ||
+ (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
+ && currentTarget.type === 'radio'))
+ node = currentTarget;
+ }
+ if (node.nodeType == Node.TEXT_NODE) node = node.parentNode;
+ return Element.extend(node);
+ },
+
+ findElement: function(event, expression) {
+ var element = Event.element(event);
+ if (!expression) return element;
+ var elements = [element].concat(element.ancestors());
+ return Selector.findElement(elements, expression, 0);
+ },
+
+ pointer: function(event) {
+ var docElement = document.documentElement,
+ body = document.body || { scrollLeft: 0, scrollTop: 0 };
+ return {
+ x: event.pageX || (event.clientX +
+ (docElement.scrollLeft || body.scrollLeft) -
+ (docElement.clientLeft || 0)),
+ y: event.pageY || (event.clientY +
+ (docElement.scrollTop || body.scrollTop) -
+ (docElement.clientTop || 0))
+ };
+ },
+
+ pointerX: function(event) { return Event.pointer(event).x },
+ pointerY: function(event) { return Event.pointer(event).y },
+
+ stop: function(event) {
+ Event.extend(event);
+ event.preventDefault();
+ event.stopPropagation();
+ event.stopped = true;
+ }
+ };
+})();
+
+Event.extend = (function() {
+ var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
+ m[name] = Event.Methods[name].methodize();
+ return m;
+ });
+
+ if (Prototype.Browser.IE) {
+ Object.extend(methods, {
+ stopPropagation: function() { this.cancelBubble = true },
+ preventDefault: function() { this.returnValue = false },
+ inspect: function() { return "[object Event]" }
+ });
+
+ return function(event) {
+ if (!event) return false;
+ if (event._extendedByPrototype) return event;
+
+ event._extendedByPrototype = Prototype.emptyFunction;
+ var pointer = Event.pointer(event);
+ Object.extend(event, {
+ target: event.srcElement,
+ relatedTarget: Event.relatedTarget(event),
+ pageX: pointer.x,
+ pageY: pointer.y
+ });
+ return Object.extend(event, methods);
+ };
+
+ } else {
+ Event.prototype = Event.prototype || document.createEvent("HTMLEvents")['__proto__'];
+ Object.extend(Event.prototype, methods);
+ return Prototype.K;
+ }
+})();
+
+Object.extend(Event, (function() {
+ var cache = Event.cache;
+
+ function getEventID(element) {
+ if (element._prototypeEventID) return element._prototypeEventID[0];
+ arguments.callee.id = arguments.callee.id || 1;
+ return element._prototypeEventID = [++arguments.callee.id];
+ }
+
+ function getDOMEventName(eventName) {
+ if (eventName && eventName.include(':')) return "dataavailable";
+ return eventName;
+ }
+
+ function getCacheForID(id) {
+ return cache[id] = cache[id] || { };
+ }
+
+ function getWrappersForEventName(id, eventName) {
+ var c = getCacheForID(id);
+ return c[eventName] = c[eventName] || [];
+ }
+
+ function createWrapper(element, eventName, handler) {
+ var id = getEventID(element);
+ var c = getWrappersForEventName(id, eventName);
+ if (c.pluck("handler").include(handler)) return false;
+
+ var wrapper = function(event) {
+ if (!Event || !Event.extend ||
+ (event.eventName && event.eventName != eventName))
+ return false;
+
+ Event.extend(event);
+ handler.call(element, event);
+ };
+
+ wrapper.handler = handler;
+ c.push(wrapper);
+ return wrapper;
+ }
+
+ function findWrapper(id, eventName, handler) {
+ var c = getWrappersForEventName(id, eventName);
+ return c.find(function(wrapper) { return wrapper.handler == handler });
+ }
+
+ function destroyWrapper(id, eventName, handler) {
+ var c = getCacheForID(id);
+ if (!c[eventName]) return false;
+ c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
+ }
+
+ function destroyCache() {
+ for (var id in cache)
+ for (var eventName in cache[id])
+ cache[id][eventName] = null;
+ }
+
+
+ // Internet Explorer needs to remove event handlers on page unload
+ // in order to avoid memory leaks.
+ if (window.attachEvent) {
+ window.attachEvent("onunload", destroyCache);
+ }
+
+ // Safari has a dummy event handler on page unload so that it won't
+ // use its bfcache. Safari <= 3.1 has an issue with restoring the "document"
+ // object when page is returned to via the back button using its bfcache.
+ if (Prototype.Browser.WebKit) {
+ window.addEventListener('unload', Prototype.emptyFunction, false);
+ }
+
+ return {
+ observe: function(element, eventName, handler) {
+ element = $(element);
+ var name = getDOMEventName(eventName);
+
+ var wrapper = createWrapper(element, eventName, handler);
+ if (!wrapper) return element;
+
+ if (element.addEventListener) {
+ element.addEventListener(name, wrapper, false);
+ } else {
+ element.attachEvent("on" + name, wrapper);
+ }
+
+ return element;
+ },
+
+ stopObserving: function(element, eventName, handler) {
+ element = $(element);
+ var id = getEventID(element), name = getDOMEventName(eventName);
+
+ if (!handler && eventName) {
+ getWrappersForEventName(id, eventName).each(function(wrapper) {
+ element.stopObserving(eventName, wrapper.handler);
+ });
+ return element;
+
+ } else if (!eventName) {
+ Object.keys(getCacheForID(id)).each(function(eventName) {
+ element.stopObserving(eventName);
+ });
+ return element;
+ }
+
+ var wrapper = findWrapper(id, eventName, handler);
+ if (!wrapper) return element;
+
+ if (element.removeEventListener) {
+ element.removeEventListener(name, wrapper, false);
+ } else {
+ element.detachEvent("on" + name, wrapper);
+ }
+
+ destroyWrapper(id, eventName, handler);
+
+ return element;
+ },
+
+ fire: function(element, eventName, memo) {
+ element = $(element);
+ if (element == document && document.createEvent && !element.dispatchEvent)
+ element = document.documentElement;
+
+ var event;
+ if (document.createEvent) {
+ event = document.createEvent("HTMLEvents");
+ event.initEvent("dataavailable", true, true);
+ } else {
+ event = document.createEventObject();
+ event.eventType = "ondataavailable";
+ }
+
+ event.eventName = eventName;
+ event.memo = memo || { };
+
+ if (document.createEvent) {
+ element.dispatchEvent(event);
+ } else {
+ element.fireEvent(event.eventType, event);
+ }
+
+ return Event.extend(event);
+ }
+ };
+})());
+
+Object.extend(Event, Event.Methods);
+
+Element.addMethods({
+ fire: Event.fire,
+ observe: Event.observe,
+ stopObserving: Event.stopObserving
+});
+
+Object.extend(document, {
+ fire: Element.Methods.fire.methodize(),
+ observe: Element.Methods.observe.methodize(),
+ stopObserving: Element.Methods.stopObserving.methodize(),
+ loaded: false
+});
+
+(function() {
+ /* Support for the DOMContentLoaded event is based on work by Dan Webb,
+ Matthias Miller, Dean Edwards and John Resig. */
+
+ var timer;
+
+ function fireContentLoadedEvent() {
+ if (document.loaded) return;
+ if (timer) window.clearInterval(timer);
+ document.fire("dom:loaded");
+ document.loaded = true;
+ }
+
+ if (document.addEventListener) {
+ if (Prototype.Browser.WebKit) {
+ timer = window.setInterval(function() {
+ if (/loaded|complete/.test(document.readyState))
+ fireContentLoadedEvent();
+ }, 0);
+
+ Event.observe(window, "load", fireContentLoadedEvent);
+
+ } else {
+ document.addEventListener("DOMContentLoaded",
+ fireContentLoadedEvent, false);
+ }
+
+ } else {
+ document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
+ $("__onDOMContentLoaded").onreadystatechange = function() {
+ if (this.readyState == "complete") {
+ this.onreadystatechange = null;
+ fireContentLoadedEvent();
+ }
+ };
+ }
+})();
+/*------------------------------- DEPRECATED -------------------------------*/
+
+Hash.toQueryString = Object.toQueryString;
+
+var Toggle = { display: Element.toggle };
+
+Element.Methods.childOf = Element.Methods.descendantOf;
+
+var Insertion = {
+ Before: function(element, content) {
+ return Element.insert(element, {before:content});
+ },
+
+ Top: function(element, content) {
+ return Element.insert(element, {top:content});
+ },
+
+ Bottom: function(element, content) {
+ return Element.insert(element, {bottom:content});
+ },
+
+ After: function(element, content) {
+ return Element.insert(element, {after:content});
+ }
+};
+
+var $continue = new Error('"throw $continue" is deprecated, use "return" instead');
+
+// This should be moved to script.aculo.us; notice the deprecated methods
+// further below, that map to the newer Element methods.
+var Position = {
+ // set to true if needed, warning: firefox performance problems
+ // NOT neeeded for page scrolling, only if draggable contained in
+ // scrollable elements
+ includeScrollOffsets: false,
+
+ // must be called before calling withinIncludingScrolloffset, every time the
+ // page is scrolled
+ prepare: function() {
+ this.deltaX = window.pageXOffset
+ || document.documentElement.scrollLeft
+ || document.body.scrollLeft
+ || 0;
+ this.deltaY = window.pageYOffset
+ || document.documentElement.scrollTop
+ || document.body.scrollTop
+ || 0;
+ },
+
+ // caches x/y coordinate pair to use with overlap
+ within: function(element, x, y) {
+ if (this.includeScrollOffsets)
+ return this.withinIncludingScrolloffsets(element, x, y);
+ this.xcomp = x;
+ this.ycomp = y;
+ this.offset = Element.cumulativeOffset(element);
+
+ return (y >= this.offset[1] &&
+ y < this.offset[1] + element.offsetHeight &&
+ x >= this.offset[0] &&
+ x < this.offset[0] + element.offsetWidth);
+ },
+
+ withinIncludingScrolloffsets: function(element, x, y) {
+ var offsetcache = Element.cumulativeScrollOffset(element);
+
+ this.xcomp = x + offsetcache[0] - this.deltaX;
+ this.ycomp = y + offsetcache[1] - this.deltaY;
+ this.offset = Element.cumulativeOffset(element);
+
+ return (this.ycomp >= this.offset[1] &&
+ this.ycomp < this.offset[1] + element.offsetHeight &&
+ this.xcomp >= this.offset[0] &&
+ this.xcomp < this.offset[0] + element.offsetWidth);
+ },
+
+ // within must be called directly before
+ overlap: function(mode, element) {
+ if (!mode) return 0;
+ if (mode == 'vertical')
+ return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
+ element.offsetHeight;
+ if (mode == 'horizontal')
+ return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
+ element.offsetWidth;
+ },
+
+ // Deprecation layer -- use newer Element methods now (1.5.2).
+
+ cumulativeOffset: Element.Methods.cumulativeOffset,
+
+ positionedOffset: Element.Methods.positionedOffset,
+
+ absolutize: function(element) {
+ Position.prepare();
+ return Element.absolutize(element);
+ },
+
+ relativize: function(element) {
+ Position.prepare();
+ return Element.relativize(element);
+ },
+
+ realOffset: Element.Methods.cumulativeScrollOffset,
+
+ offsetParent: Element.Methods.getOffsetParent,
+
+ page: Element.Methods.viewportOffset,
+
+ clone: function(source, target, options) {
+ options = options || { };
+ return Element.clonePosition(target, source, options);
+ }
+};
+
+/*--------------------------------------------------------------------------*/
+
+if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
+ function iter(name) {
+ return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
+ }
+
+ instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
+ function(element, className) {
+ className = className.toString().strip();
+ var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
+ return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
+ } : function(element, className) {
+ className = className.toString().strip();
+ var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
+ if (!classNames && !className) return elements;
+
+ var nodes = $(element).getElementsByTagName('*');
+ className = ' ' + className + ' ';
+
+ for (var i = 0, child, cn; child = nodes[i]; i++) {
+ if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
+ (classNames && classNames.all(function(name) {
+ return !name.toString().blank() && cn.include(' ' + name + ' ');
+ }))))
+ elements.push(Element.extend(child));
+ }
+ return elements;
+ };
+
+ return function(className, parentElement) {
+ return $(parentElement || document.body).getElementsByClassName(className);
+ };
+}(Element.Methods);
+
+/*--------------------------------------------------------------------------*/
+
+Element.ClassNames = Class.create();
+Element.ClassNames.prototype = {
+ initialize: function(element) {
+ this.element = $(element);
+ },
+
+ _each: function(iterator) {
+ this.element.className.split(/\s+/).select(function(name) {
+ return name.length > 0;
+ })._each(iterator);
+ },
+
+ set: function(className) {
+ this.element.className = className;
+ },
+
+ add: function(classNameToAdd) {
+ if (this.include(classNameToAdd)) return;
+ this.set($A(this).concat(classNameToAdd).join(' '));
+ },
+
+ remove: function(classNameToRemove) {
+ if (!this.include(classNameToRemove)) return;
+ this.set($A(this).without(classNameToRemove).join(' '));
+ },
+
+ toString: function() {
+ return $A(this).join(' ');
+ }
+};
+
+Object.extend(Element.ClassNames.prototype, Enumerable);
+
+/*--------------------------------------------------------------------------*/
+
+Element.addMethods();
\ No newline at end of file
git://source.jalview.org / jabaws.git / commitdiff
