var Prototype = { Version: "1.5.1", Browser: { IE: !!(window.attachEvent && !window.opera), Opera: !!window.opera, WebKit: navigator.userAgent.indexOf("AppleWebKit/") > -1, Gecko: navigator.userAgent.indexOf("Gecko") > -1 && navigator.userAgent.indexOf("KHTML") == -1 }, BrowserFeatures: { XPath: !!document.evaluate, ElementExtensions: !!window.HTMLElement, SpecificElementExtensions: document.createElement("div").__proto__ !== document.createElement("form").__proto__ }, ScriptFragment: "<script[^>]*>([\u0001-\uffff]*?)<\/script>", JSONFilter: /^\/\*-secure-\s*(.*)\s*\*\/\s*$/, emptyFunction: function() { }, K: function(x) { return x } }; var Class = { create: function() { return function() { this.initialize.apply(this, arguments) } } }; var Abstract = new Object; 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 === undefined) return "undefined"; if (object === null) return "null"; return object.inspect ? object.inspect() : object.toString() } 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.ownerDocument === document) return; var results = []; for (var property in object) { var value = Object.toJSON(object[property]); if (value !== undefined) results.push(property.toJSON() + ": " + value) } return "{" + results.join(", ") + "}" }, 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) } }); Function.prototype.bind = function() { var __method = this, args = $A(arguments), object = args.shift(); return function() { return __method.apply(object, args.concat($A(arguments))) } }; Function.prototype.bindAsEventListener = function(object) { var __method = this, args = $A(arguments), object = args.shift(); return function(event) { return __method.apply(object, [event || window.event].concat(args)) } }; Object.extend(Number.prototype, { toColorPart: function() { return this.toPaddedString(2, 16) }, succ: function() { return this + 1 }, times: function(iterator) { $R(0, this, true).each(iterator); return this }, toPaddedString: function(length, radix) { var string = this.toString(radix || 10); return "0".times(length - string.length) + string }, toJSON: function() { return isFinite(this) ? this.toString() : "null" } }); Date.prototype.toJSON = function() { return '"' + this.getFullYear() + "-" + (this.getMonth() + 1).toPaddedString(2) + "-" + this.getDate().toPaddedString(2) + "T" + this.getHours().toPaddedString(2) + ":" + this.getMinutes().toPaddedString(2) + ":" + this.getSeconds().toPaddedString(2) + '"' }; 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 } }; var PeriodicalExecuter = Class.create(); PeriodicalExecuter.prototype = { 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 * 1E3) }, stop: function() { if (!this.timer) return; clearInterval(this.timer); this.timer = null }, onTimerEvent: function() { if (!this.currentlyExecuting) try { this.currentlyExecuting = true; this.callback(this) } finally { this.currentlyExecuting = false } } }; Object.extend(String, { interpret: function(value) { return value == null ? "" : String(value) }, specialChar: { "\u0008": "\\b", "\t": "\\t", "\n": "\\n", "\u000c": "\\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 = count === undefined ? 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 this }, truncate: function(length, truncation) { length = length || 30; truncation = truncation === undefined ? "..." : truncation; return this.length > length ? this.slice(0, length - truncation.length) + truncation : 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 = document.createElement("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 (hash[key].constructor != Array) 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) { var result = ""; for (var i = 0; i < count; i++) result += this; return result }, 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}") }, evalJSON: function(sanitize) { var json = this.unfilterJSON(); try { if (!sanitize || /^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(json)) return eval("(" + json + ")") } catch (e) { } throw new SyntaxError("Badly formed JSON string: " + this.inspect()); }, include: function(pattern) { return this.indexOf(pattern) > -1 }, startsWith: function(pattern) { return this.indexOf(pattern) === 0 }, endsWith: function(pattern) { var d = this.length - pattern.length; return d >= 0 && this.lastIndexOf(pattern) === d }, empty: function() { return this == "" }, blank: function() { return /^\s*$/.test(this) } }); if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, { escapeHTML: function() { return this.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;") }, unescapeHTML: function() { return this.replace(/&amp;/g, "&").replace(/&lt;/g, "<").replace(/&gt;/g, ">") } }); String.prototype.gsub.prepareReplacement = function(replacement) { if (typeof replacement == "function") return replacement; var template = new Template(replacement); return function(match) { return template.evaluate(match) } }; String.prototype.parseQuery = String.prototype.toQueryParams; Object.extend(String.prototype.escapeHTML, { div: document.createElement("div"), text: document.createTextNode("") }); with (String.prototype.escapeHTML) div.appendChild(text); var Template = Class.create(); Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/; Template.prototype = { initialize: function(template, pattern) { this.template = template.toString(); this.pattern = pattern || Template.Pattern }, evaluate: function(object) { return this.template.gsub(this.pattern, function(match) { var before = match[1]; if (before == "\\") return match[2]; return before + String.interpret(object[match[3]]) }) } }; var $break = {}, $continue = new Error('"throw $continue" is deprecated, use "return" instead'); var Enumerable = { each: function(iterator) { var index = 0; try { this._each(function(value) { iterator(value, index++) }) } catch (e) { if (e != $break) throw e; } return this }, eachSlice: function(number, iterator) { var index = -number, slices = [], array = this.toArray(); while ((index += number) < array.length) slices.push(array.slice(index, index + number)); return slices.map(iterator) }, all: function(iterator) { var result = true; this.each(function(value, index) { result = result && !!(iterator || Prototype.K)(value, index); if (!result) throw $break; }); return result }, any: function(iterator) { var result = false; this.each(function(value, index) { if (result = !!(iterator || Prototype.K)(value, index)) throw $break; }); return result }, collect: function(iterator) { var results = []; this.each(function(value, index) { results.push((iterator || Prototype.K)(value, index)) }); return results }, detect: function(iterator) { var result; this.each(function(value, index) { if (iterator(value, index)) { result = value; throw $break; } }); return result }, findAll: function(iterator) { var results = []; this.each(function(value, index) { if (iterator(value, index)) results.push(value) }); return results }, grep: function(pattern, iterator) { var results = []; this.each(function(value, index) { var stringValue = value.toString(); if (stringValue.match(pattern)) results.push((iterator || Prototype.K)(value, index)) }); return results }, include: function(object) { var found = false; this.each(function(value) { if (value == object) { found = true; throw $break; } }); return found }, inGroupsOf: function(number, fillWith) { fillWith = fillWith === undefined ? null : fillWith; return this.eachSlice(number, function(slice) { while (slice.length < number) slice.push(fillWith); return slice }) }, inject: function(memo, iterator) { this.each(function(value, index) { memo = iterator(memo, value, index) }); return memo }, invoke: function(method) { var args = $A(arguments).slice(1); return this.map(function(value) { return value[method].apply(value, args) }) }, max: function(iterator) { var result; this.each(function(value, index) { value = (iterator || Prototype.K)(value, index); if (result == undefined || value >= result) result = value }); return result }, min: function(iterator) { var result; this.each(function(value, index) { value = (iterator || Prototype.K)(value, index); if (result == undefined || value < result) result = value }); return result }, partition: function(iterator) { var trues = [], falses = []; this.each(function(value, index) { ((iterator || Prototype.K)(value, index) ? trues : falses).push(value) }); return [trues, falses] }, pluck: function(property) { var results = []; this.each(function(value, index) { results.push(value[property]) }); return results }, reject: function(iterator) { var results = []; this.each(function(value, index) { if (!iterator(value, index)) results.push(value) }); return results }, sortBy: function(iterator) { return this.map(function(value, index) { return { value: value, criteria: iterator(value, index)} }).sort(function(left, right) { var a = left.criteria, b = right.criteria; return a < b ? -1 : a > b ? 1 : 0 }).pluck("value") }, toArray: function() { return this.map() }, zip: function() { var iterator = Prototype.K, args = $A(arguments); if (typeof args.last() == "function") iterator = args.pop(); var collections = [this].concat(args).map($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, member: Enumerable.include, entries: Enumerable.toArray }); var $A = Array.from = function(iterable) { if (!iterable) return []; if (iterable.toArray) return iterable.toArray(); else { var results = []; for (var i = 0, length = iterable.length; i < length; i++) results.push(iterable[i]); return results } }; if (Prototype.Browser.WebKit) $A = Array.from = function(iterable) { if (!iterable) return []; if (!(typeof iterable == "function" && iterable == "[object NodeList]") && iterable.toArray) return iterable.toArray(); else { var results = []; for (var i = 0, length = iterable.length; i < length; i++) results.push(iterable[i]); return results } }; 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(value && value.constructor == Array ? value.flatten() : [value]) }) }, without: function() { var values = $A(arguments); return this.select(function(value) { return !values.include(value) }) }, indexOf: function(object) { for (var i = 0, length = this.length; i < length; i++) if (this[i] == object) return i; return -1 }, 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 }) }, 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 (value !== undefined) results.push(value) }); return "[" + results.join(", ") + "]" } }); Array.prototype.toArray = Array.prototype.clone; function $w(string) { 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 (arguments[i].constructor == Array) for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++) array.push(arguments[i][j]); else array.push(arguments[i]); return array }; var Hash = function(object) { if (object instanceof Hash) this.merge(object); else Object.extend(this, object || {}) }; Object.extend(Hash, { toQueryString: function(obj) { var parts = []; parts.add = arguments.callee.addPair; this.prototype._each.call(obj, function(pair) { if (!pair.key) return; var value = pair.value; if (value && typeof value == "object") { if (value.constructor == Array) value.each(function(value) { parts.add(pair.key, value) }); return } parts.add(pair.key, value) }); return parts.join("&") }, toJSON: function(object) { var results = []; this.prototype._each.call(object, function(pair) { var value = Object.toJSON(pair.value); if (value !== undefined) results.push(pair.key.toJSON() + ": " + value) }); return "{" + results.join(", ") + "}" } }); Hash.toQueryString.addPair = function(key, value, prefix) { key = encodeURIComponent(key); if (value === undefined) this.push(key); else this.push(key + "=" + (value == null ? "" : encodeURIComponent(value))) }; Object.extend(Hash.prototype, Enumerable); Object.extend(Hash.prototype, { _each: function(iterator) { for (var key in this) { var value = this[key]; if (value && value == Hash.prototype[key]) continue; var pair = [key, value]; pair.key = key; pair.value = value; iterator(pair) } }, keys: function() { return this.pluck("key") }, values: function() { return this.pluck("value") }, merge: function(hash) { return $H(hash).inject(this, function(mergedHash, pair) { mergedHash[pair.key] = pair.value; return mergedHash }) }, remove: function() { var result; for (var i = 0, length = arguments.length; i < length; i++) { var value = this[arguments[i]]; if (value !== undefined) if (result === undefined) result = value; else { if (result.constructor != Array) result = [result]; result.push(value) } delete this[arguments[i]] } return result }, toQueryString: function() { return Hash.toQueryString(this) }, inspect: function() { return "#<Hash:{" + this.map(function(pair) { return pair.map(Object.inspect).join(": ") }).join(", ") + "}>" }, toJSON: function() { return Hash.toJSON(this) } }); function $H(object) { if (object instanceof Hash) return object; return new Hash(object) } if (function() { var i = 0, Test = function(value) { this.key = value }; Test.prototype.key = "foo"; for (var property in new Test("bar")) i++; return i > 1 } ()) Hash.prototype._each = function(iterator) { var cache = []; for (var key in this) { var value = this[key]; if (value && value == Hash.prototype[key] || cache.include(key)) continue; cache.push(key); var pair = [key, value]; pair.key = key; pair.value = value; iterator(pair) } }; ObjectRange = Class.create(); Object.extend(ObjectRange.prototype, Enumerable); Object.extend(ObjectRange.prototype, { 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 (typeof responder[callback] == "function") 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 = function() { }; Ajax.Base.prototype = { setOptions: function(options) { this.options = { method: "post", asynchronous: true, contentType: "application/x-www-form-urlencoded", encoding: "UTF-8", parameters: "" }; Object.extend(this.options, options || {}); this.options.method = this.options.method.toLowerCase(); if (typeof this.options.parameters == "string") this.options.parameters = this.options.parameters.toQueryParams() } }; Ajax.Request = Class.create(); Ajax.Request.Events = ["Uninitialized", "Loading", "Loaded", "Interactive", "Complete"]; Ajax.Request.prototype = Object.extend(new Ajax.Base, { _complete: false, initialize: function(url, options) { this.transport = Ajax.getTransport(); this.setOptions(options); this.request(url) }, request: function(url) { this.url = url; this.method = this.options.method; var params = Object.clone(this.options.parameters); if (!["get", "post"].include(this.method)) { params["_method"] = this.method; this.method = "post" } this.parameters = params; if (params = Hash.toQueryString(params)) if (this.method == "get") this.url += (this.url.include("?") ? "&" : "?") + params; else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += "&_="; try { if (this.options.onCreate) this.options.onCreate(this.transport); Ajax.Responders.dispatch("onCreate", this, this.transport); this.transport.open(this.method.toUpperCase(), this.url, this.options.asynchronous); if (this.options.asynchronous) setTimeout(function() { this.respondToReadyState(1) } .bind(this), 10); this.transport.onreadystatechange = this.onStateChange.bind(this); this.setRequestHeaders(); this.body = this.method == "post" ? this.options.postBody || params : null; this.transport.send(this.body); 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 : ""); if (this.transport.overrideMimeType && (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0, 2005])[1] < 2005) headers["Connection"] = "close" } if (typeof this.options.requestHeaders == "object") { var extras = this.options.requestHeaders; if (typeof extras.push == "function") for (var i = 0, length = extras.length; i < length; i += 2) headers[extras[i]] = extras[i + 1]; else $H(extras).each(function(pair) { headers[pair.key] = pair.value }) } for (var name in headers) this.transport.setRequestHeader(name, headers[name]) }, success: function() { return !this.transport.status || this.transport.status >= 200 && this.transport.status < 300 }, respondToReadyState: function(readyState) { var state = Ajax.Request.Events[readyState]; var transport = this.transport, json = this.evalJSON(); if (state == "Complete") { try { this._complete = true; (this.options["on" + this.transport.status] || this.options["on" + (this.success() ? "Success" : "Failure")] || Prototype.emptyFunction)(transport, json) } catch (e) { this.dispatchException(e) } var contentType = this.getHeader("Content-type"); if (contentType && contentType.strip().match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i)) this.evalResponse() } try { (this.options["on" + state] || Prototype.emptyFunction)(transport, json); Ajax.Responders.dispatch("on" + state, this, transport, json) } catch (e) { this.dispatchException(e) } if (state == "Complete") this.transport.onreadystatechange = Prototype.emptyFunction }, getHeader: function(name) { try { return this.transport.getResponseHeader(name) } catch (e) { return null } }, evalJSON: function() { try { var json = this.getHeader("X-JSON"); return json ? json.evalJSON() : 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.Updater = Class.create(); Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), { initialize: function(container, url, options) { this.container = { success: container.success || container, failure: container.failure || (container.success ? null : container) }; this.transport = Ajax.getTransport(); this.setOptions(options); var onComplete = this.options.onComplete || Prototype.emptyFunction; this.options.onComplete = function(transport, param) { this.updateContent(); onComplete(transport, param) } .bind(this); this.request(url) }, updateContent: function() { var receiver = this.container[this.success() ? "success" : "failure"]; var response = this.transport.responseText; if (!this.options.evalScripts) response = response.stripScripts(); if (receiver = $(receiver)) if (this.options.insertion) new this.options.insertion(receiver, response); else receiver.update(response); if (this.success()) if (this.onComplete) setTimeout(this.onComplete.bind(this), 10) } }); Ajax.PeriodicalUpdater = Class.create(); Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base, { initialize: function(container, url, options) { this.setOptions(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(request) { if (this.options.decay) { this.decay = request.responseText == this.lastText ? this.decay * this.options.decay : 1; this.lastText = request.responseText } this.timer = setTimeout(this.onTimerEvent.bind(this), this.decay * this.frequency * 1E3) }, 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 (typeof element == "string") element = document.getElementById(element); return Element.extend(element) } if (Prototype.BrowserFeatures.XPath) { document._getElementsByXPath = function(expression, parentElement) { var results = []; var query = document.evaluate(expression, $(parentElement) || document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null); for (var i = 0, length = query.snapshotLength; i < length; i++) results.push(query.snapshotItem(i)); return results }; document.getElementsByClassName = function(className, parentElement) { var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]"; return document._getElementsByXPath(q, parentElement) } } else document.getElementsByClassName = function(className, parentElement) { var children = ($(parentElement) || document.body).getElementsByTagName("*"); var elements = [], child; for (var i = 0, length = children.length; i < length; i++) { child = children[i]; if (Element.hasClassName(child, className)) elements.push(Element.extend(child)) } return elements }; if (!window.Element) var Element = {}; Element.extend = function(element) { var F = Prototype.BrowserFeatures; if (!element || !element.tagName || element.nodeType == 3 || element._extended || F.SpecificElementExtensions || element == window) return element; var methods = {}, tagName = element.tagName, cache = Element.extend.cache, T = Element.Methods.ByTag; if (!F.ElementExtensions) Object.extend(methods, Element.Methods), Object.extend(methods, Element.Methods.Simulated); if (T[tagName]) Object.extend(methods, T[tagName]); for (var property in methods) { var value = methods[property]; if (typeof value == "function" && !(property in element)) element[property] = cache.findOrStore(value) } element._extended = Prototype.emptyFunction; return element }; Element.extend.cache = { findOrStore: function(value) { return this[value] = this[value] || function() { return value.apply(null, [this].concat($A(arguments))) } } }; Element.Methods = { visible: function(element) { return $(element).style.display != "none" }, toggle: function(element) { element = $(element); Element[Element.visible(element) ? "hide" : "show"](element); return element }, hide: function(element) { $(element).style.display = "none"; return element }, show: function(element) { $(element).style.display = ""; return element }, remove: function(element) { element = $(element); element.parentNode.removeChild(element); return element }, update: function(element, html) { html = typeof html == "undefined" ? "" : html.toString(); $(element).innerHTML = html.stripScripts(); setTimeout(function() { html.evalScripts() }, 10); return element }, replace: function(element, html) { element = $(element); html = typeof html == "undefined" ? "" : html.toString(); if (element.outerHTML) element.outerHTML = html.stripScripts(); else { var range = element.ownerDocument.createRange(); range.selectNodeContents(element); element.parentNode.replaceChild(range.createContextualFragment(html.stripScripts()), element) } setTimeout(function() { html.evalScripts() }, 10); return element }, 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 $A($(element).getElementsByTagName("*")).each(Element.extend) }, 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 = $(element); return element.previousSiblings().reverse().concat(element.nextSiblings()) }, match: function(element, selector) { if (typeof selector == "string") selector = new Selector(selector); return selector.match($(element)) }, up: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(element.parentNode); var ancestors = element.ancestors(); return expression ? Selector.findElement(ancestors, expression, index) : ancestors[index || 0] }, down: function(element, expression, index) { element = $(element); if (arguments.length == 1) return element.firstDescendant(); var descendants = element.descendants(); return expression ? Selector.findElement(descendants, expression, index) : descendants[index || 0] }, previous: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element)); var previousSiblings = element.previousSiblings(); return expression ? Selector.findElement(previousSiblings, expression, index) : previousSiblings[index || 0] }, next: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element)); var nextSiblings = element.nextSiblings(); return expression ? Selector.findElement(nextSiblings, expression, index) : nextSiblings[index || 0] }, getElementsBySelector: function() { var args = $A(arguments), element = $(args.shift()); return Selector.findChildElements(element, args) }, getElementsByClassName: function(element, className) { return document.getElementsByClassName(className, element) }, readAttribute: function(element, name) { element = $(element); if (Prototype.Browser.IE) { if (!element.attributes) return null; var t = Element._attributeTranslations; if (t.values[name]) return t.values[name](element, name); if (t.names[name]) name = t.names[name]; var attribute = element.attributes[name]; return attribute ? attribute.nodeValue : null } return element.getAttribute(name) }, 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 = $(element))) return; var elementClassName = element.className; if (elementClassName.length == 0) return false; if (elementClassName == className || elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)"))) return true; return false }, addClassName: function(element, className) { if (!(element = $(element))) return; Element.classNames(element).add(className); return element }, removeClassName: function(element, className) { if (!(element = $(element))) return; Element.classNames(element).remove(className); return element }, toggleClassName: function(element, className) { if (!(element = $(element))) return; Element.classNames(element)[element.hasClassName(className) ? "remove" : "add"](className); return element }, observe: function() { Event.observe.apply(Event, arguments); return $A(arguments).first() }, stopObserving: function() { Event.stopObserving.apply(Event, arguments); return $A(arguments).first() }, 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); while (element = element.parentNode) if (element == ancestor) return true; return false }, scrollTo: function(element) { element = $(element); var pos = Position.cumulativeOffset(element); window.scrollTo(pos[0], pos[1]); return element }, getStyle: function(element, style) { element = $(element); style = style == "float" ? "cssFloat" : style.camelize(); var value = element.style[style]; if (!value) { var css = document.defaultView.getComputedStyle(element, null); value = css ? css[style] : null } if (style == "opacity") return value ? parseFloat(value) : 1; return value == "auto" ? null : value }, getOpacity: function(element) { return $(element).getStyle("opacity") }, setStyle: function(element, styles, camelized) { element = $(element); var elementStyle = element.style; for (var property in styles) if (property == "opacity") element.setOpacity(styles[property]); else elementStyle[property == "float" || property == "cssFloat" ? elementStyle.styleFloat === undefined ? "cssFloat" : "styleFloat" : camelized ? property : property.camelize()] = styles[property]; return element }, setOpacity: function(element, value) { element = $(element); element.style.opacity = value == 1 || value === "" ? "" : value < 1.0E-5 ? 0 : value; return element }, getDimensions: function(element) { element = $(element); var display = $(element).getStyle("display"); if (display != "none" && display != null) return { width: element.offsetWidth, height: element.offsetHeight }; var els = element.style; var originalVisibility = els.visibility; var originalPosition = els.position; var originalDisplay = els.display; els.visibility = "hidden"; els.position = "absolute"; els.display = "block"; var originalWidth = element.clientWidth; var originalHeight = element.clientHeight; els.display = originalDisplay; els.position = originalPosition; els.visibility = originalVisibility; return { width: originalWidth, height: originalHeight} }, makePositioned: function(element) { element = $(element); var pos = Element.getStyle(element, "position"); if (pos == "static" || !pos) { element._madePositioned = true; element.style.position = "relative"; if (window.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.style.overflow || "auto"; if ((Element.getStyle(element, "overflow") || "visible") != "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 } }; Object.extend(Element.Methods, { childOf: Element.Methods.descendantOf, childElements: Element.Methods.immediateDescendants }); if (Prototype.Browser.Opera) { Element.Methods._getStyle = Element.Methods.getStyle; Element.Methods.getStyle = function(element, style) { switch (style) { case "left": case "top": case "right": case "bottom": if (Element._getStyle(element, "position") == "static") return null; default: return Element._getStyle(element, style) } } } else if (Prototype.Browser.IE) { 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 } 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) { element = $(element); var filter = element.getStyle("filter"), style = element.style; if (value == 1 || value === "") { style.filter = filter.replace(/alpha\([^\)]*\)/gi, ""); return element } else if (value < 1.0E-5) value = 0; style.filter = filter.replace(/alpha\([^\)]*\)/gi, "") + "alpha(opacity=" + value * 100 + ")"; return element }; Element.Methods.update = function(element, html) { element = $(element); html = typeof html == "undefined" ? "" : html.toString(); var tagName = element.tagName.toUpperCase(); if (["THEAD", "TBODY", "TR", "TD"].include(tagName)) { var div = document.createElement("div"); switch (tagName) { case "THEAD": case "TBODY": div.innerHTML = "<table><tbody>" + html.stripScripts() + "</tbody></table>"; depth = 2; break; case "TR": div.innerHTML = "<table><tbody><tr>" + html.stripScripts() + "</tr></tbody></table>"; depth = 3; break; case "TD": div.innerHTML = "<table><tbody><tr><td>" + html.stripScripts() + "</td></tr></tbody></table>"; depth = 4 } $A(element.childNodes).each(function(node) { element.removeChild(node) }); depth.times(function() { div = div.firstChild }); $A(div.childNodes).each(function(node) { element.appendChild(node) }) } else element.innerHTML = html.stripScripts(); setTimeout(function() { html.evalScripts() }, 10); return element } } else if (Prototype.Browser.Gecko) Element.Methods.setOpacity = function(element, value) { element = $(element); element.style.opacity = value == 1 ? 0.999999 : value === "" ? "" : value < 1.0E-5 ? 0 : value; return element }; Element._attributeTranslations = { names: { colspan: "colSpan", rowspan: "rowSpan", valign: "vAlign", datetime: "dateTime", accesskey: "accessKey", tabindex: "tabIndex", enctype: "encType", maxlength: "maxLength", readonly: "readOnly", longdesc: "longDesc" }, values: { _getAttr: function(element, attribute) { return element.getAttribute(attribute, 2) }, _flag: function(element, attribute) { return $(element).hasAttribute(attribute) ? attribute : null }, style: function(element) { return element.style.cssText.toLowerCase() }, title: function(element) { var node = element.getAttributeNode("title"); return node.specified ? node.nodeValue : null } } }; (function() { Object.extend(this, { href: this._getAttr, src: this._getAttr, type: this._getAttr, disabled: this._flag, checked: this._flag, readonly: this._flag, multiple: this._flag }) }).call(Element._attributeTranslations.values); Element.Methods.Simulated = { hasAttribute: function(element, attribute) { var t = Element._attributeTranslations, node; attribute = t.names[attribute] || attribute; 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.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 (tagName.constructor == Array) 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; var cache = Element.extend.cache; for (var property in methods) { var value = methods[property]; if (!onlyIfAbsent || !(property in destination)) destination[property] = cache.findOrStore(value) } } 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 (typeof klass == "undefined") continue; copy(T[tag], klass.prototype) } Object.extend(Element, Element.Methods); delete Element.ByTag }; var Toggle = { display: Element.toggle }; Abstract.Insertion = function(adjacency) { this.adjacency = adjacency }; Abstract.Insertion.prototype = { initialize: function(element, content) { this.element = $(element); this.content = content.stripScripts(); if (this.adjacency && this.element.insertAdjacentHTML) try { this.element.insertAdjacentHTML(this.adjacency, this.content) } catch (e) { var tagName = this.element.tagName.toUpperCase(); if (["TBODY", "TR"].include(tagName)) this.insertContent(this.contentFromAnonymousTable()); else throw e; } else { this.range = this.element.ownerDocument.createRange(); if (this.initializeRange) this.initializeRange(); this.insertContent([this.range.createContextualFragment(this.content)]) } setTimeout(function() { content.evalScripts() }, 10) }, contentFromAnonymousTable: function() { var div = document.createElement("div"); div.innerHTML = "<table><tbody>" + this.content + "</tbody></table>"; return $A(div.childNodes[0].childNodes[0].childNodes) } }; var Insertion = new Object; Insertion.Before = Class.create(); Insertion.Before.prototype = Object.extend(new Abstract.Insertion("beforeBegin"), { initializeRange: function() { this.range.setStartBefore(this.element) }, insertContent: function(fragments) { fragments.each(function(fragment) { this.element.parentNode.insertBefore(fragment, this.element) } .bind(this)) } }); Insertion.Top = Class.create(); Insertion.Top.prototype = Object.extend(new Abstract.Insertion("afterBegin"), { initializeRange: function() { this.range.selectNodeContents(this.element); this.range.collapse(true) }, insertContent: function(fragments) { fragments.reverse(false).each(function(fragment) { this.element.insertBefore(fragment, this.element.firstChild) } .bind(this)) } }); Insertion.Bottom = Class.create(); Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion("beforeEnd"), { initializeRange: function() { this.range.selectNodeContents(this.element); this.range.collapse(this.element) }, insertContent: function(fragments) { fragments.each(function(fragment) { this.element.appendChild(fragment) } .bind(this)) } }); Insertion.After = Class.create(); Insertion.After.prototype = Object.extend(new Abstract.Insertion("afterEnd"), { initializeRange: function() { this.range.setStartAfter(this.element) }, insertContent: function(fragments) { fragments.each(function(fragment) { this.element.parentNode.insertBefore(fragment, this.element.nextSibling) } .bind(this)) } }); 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); var Selector = Class.create(); Selector.prototype = { initialize: function(expression) { this.expression = expression.strip(); this.compileMatcher() }, compileMatcher: function() { if (Prototype.BrowserFeatures.XPath && !/\[[\w-]*?:/.test(this.expression)) return this.compileXPathMatcher(); 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(typeof c[i] == "function" ? 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(typeof x[i] == "function" ? 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; if (this.xpath) return document._getElementsByXPath(this.xpath, root); return this.matcher(root) }, match: function(element) { return this.findElements(document).include(element) }, 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: "[@#{1}]", attr: function(m) { 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 (typeof h === "function") return h(m); return (new Template(Selector.xpath.pseudos[m[1]])).evaluate(m) }, operators: { "=": "[@#{1}='#{3}']", "!=": "[@#{1}!='#{3}']", "^=": "[starts-with(@#{1}, '#{3}')]", "$=": "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']", "*=": "[contains(@#{1}, '#{3}')]", "~=": "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]", "|=": "[contains(concat('-', @#{1}, '-'), '-#{3}-')]" }, pseudos: { "first-child": "[not(preceding-sibling::*)]", "last-child": "[not(following-sibling::*)]", "only-child": "[not(preceding-sibling::* or following-sibling::*)]", empty: "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]", checked: "[@checked]", disabled: "[@disabled]", enabled: "[not(@disabled)]", not: function(m) { var e = m[6], p = Selector.patterns, x = Selector.xpath, le, m, v; var exclusion = []; while (e && le != e && /\S/.test(e)) { le = e; for (var i in p) if (m = e.match(p[i])) { v = typeof x[i] == "function" ? x[i](m) : (new Template(x[i])).evaluate(m); exclusion.push("(" + v.substring(1, v.length - 1) + ")"); e = e.replace(m[0], ""); break } } return "[not(" + exclusion.join(" and ") + ")]" }, "nth-child": function(m) { return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m) }, "nth-last-child": function(m) { return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m) }, "nth-of-type": function(m) { return Selector.xpath.pseudos.nth("position() ", m) }, "nth-last-of-type": function(m) { return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m) }, "first-of-type": function(m) { m[6] = "1"; return Selector.xpath.pseudos["nth-of-type"](m) }, "last-of-type": function(m) { m[6] = "1"; return Selector.xpath.pseudos["nth-last-of-type"](m) }, "only-of-type": function(m) { var p = Selector.xpath.pseudos; return p["first-of-type"](m) + p["last-of-type"](m) }, nth: function(fragment, m) { var mm, formula = m[6], predicate; if (formula == "even") formula = "2n+0"; if (formula == "odd") formula = "2n+1"; if (mm = formula.match(/^(\d+)$/)) return "[" + fragment + "= " + mm[1] + "]"; if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { 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 = false;', attr: function(m) { m[3] = m[5] || m[6]; return (new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); 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: { laterSibling: /^\s*~\s*/, child: /^\s*>\s*/, adjacent: /^\s*\+\s*/, descendant: /^\s/, 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: /^\[([\w]+)\]/, attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\]]*?)\4|([^'"][^\]]*?)))?\]/ }, handlers: { concat: function(a, b) { for (var i = 0, node; node = b[i]; i++) a.push(node); return a }, mark: function(nodes) { for (var i = 0, node; node = nodes[i]; i++) node._counted = true; return nodes }, unmark: function(nodes) { for (var i = 0, node; node = nodes[i]; i++) node._counted = undefined; return nodes }, index: function(parentNode, reverse, ofType) { parentNode._counted = true; if (reverse) for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) { node = nodes[i]; if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++ } else for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++) if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++ }, unique: function(nodes) { if (nodes.length == 0) return nodes; var results = [], n; for (var i = 0, l = nodes.length; i < l; i++) if (!(n = nodes[i])._counted) { n._counted = true; results.push(Element.extend(n)) } return Selector.handlers.unmark(results) }, descendant: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) h.concat(results, node.getElementsByTagName("*")); return results }, child: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) for (var j = 0, children = [], child; child = node.childNodes[j]; j++) if (child.nodeType == 1 && child.tagName != "!") results.push(child); return results }, adjacent: function(nodes) { for (var i = 0, results = [], node; node = nodes[i]; i++) { var next = this.nextElementSibling(node); if (next) results.push(next) } return results }, laterSibling: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) h.concat(results, Element.nextSiblings(node)); return results }, nextElementSibling: function(node) { while (node = node.nextSibling) if (node.nodeType == 1) return node; return null }, previousElementSibling: function(node) { while (node = node.previousSibling) if (node.nodeType == 1) return node; return null }, tagName: function(nodes, root, tagName, combinator) { tagName = tagName.toUpperCase(); var results = [], h = Selector.handlers; if (nodes) { if (combinator) { if (combinator == "descendant") { for (var i = 0, node; node = nodes[i]; i++) h.concat(results, node.getElementsByTagName(tagName)); return results } else nodes = this[combinator](nodes); if (tagName == "*") return nodes } for (var i = 0, node; node = nodes[i]; i++) if (node.tagName.toUpperCase() == tagName) results.push(node); return results } else return root.getElementsByTagName(tagName) }, id: function(nodes, root, id, combinator) { var targetNode = $(id), h = Selector.handlers; if (!nodes && root == document) return targetNode ? [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) { 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) { if (!nodes) nodes = root.getElementsByTagName("*"); var handler = Selector.operators[operator], results = []; for (var i = 0, node; node = nodes[i]; i++) { var nodeValue = Element.readAttribute(node, attr); if (nodeValue === null) continue; if (handler(nodeValue, value)) results.push(node) } return results }, pseudo: function(nodes, name, value, root, combinator) { if (nodes && combinator) nodes = this[combinator](nodes); if (!nodes) nodes = root.getElementsByTagName("*"); return Selector.pseudos[name](nodes, value, root) } }, pseudos: { "first-child": function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { if (Selector.handlers.previousElementSibling(node)) continue; results.push(node) } return results }, "last-child": function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { if (Selector.handlers.nextElementSibling(node)) continue; results.push(node) } return results }, "only-child": function(nodes, value, root) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) if (!h.previousElementSibling(node) && !h.nextElementSibling(node)) results.push(node); return results }, "nth-child": function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root) }, "nth-last-child": function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, true) }, "nth-of-type": function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, false, true) }, "nth-last-of-type": function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, true, true) }, "first-of-type": function(nodes, formula, root) { return Selector.pseudos.nth(nodes, "1", root, false, true) }, "last-of-type": function(nodes, formula, root) { return Selector.pseudos.nth(nodes, "1", root, true, true) }, "only-of-type": function(nodes, formula, root) { var p = Selector.pseudos; return p["last-of-type"](p["first-of-type"](nodes, formula, root), formula, root) }, getIndices: function(a, b, total) { if (a == 0) return b > 0 ? [b] : []; return $R(1, total).inject([], function(memo, i) { if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i); return memo }) }, nth: function(nodes, formula, root, reverse, ofType) { if (nodes.length == 0) return []; if (formula == "even") formula = "2n+0"; if (formula == "odd") formula = "2n+1"; var h = Selector.handlers, results = [], indexed = [], m; h.mark(nodes); for (var i = 0, node; node = nodes[i]; i++) if (!node.parentNode._counted) { h.index(node.parentNode, reverse, ofType); indexed.push(node.parentNode) } if (formula.match(/^\d+$/)) { 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+))?/)) { if (m[1] == "-") m[1] = -1; var a = m[1] ? Number(m[1]) : 1; var b = m[2] ? Number(m[2]) : 0; var indices = Selector.pseudos.getIndices(a, b, nodes.length); for (var i = 0, node, l = indices.length; node = nodes[i]; i++) for (var j = 0; j < l; j++) if (node.nodeIndex == indices[j]) results.push(node) } h.unmark(nodes); h.unmark(indexed); return results }, empty: function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { if (node.tagName == "!" || node.firstChild && !node.innerHTML.match(/^\s*$/)) continue; results.push(node) } return results }, not: function(nodes, selector, root) { var h = Selector.handlers, selectorType, m; var exclusions = (new Selector(selector)).findElements(root); h.mark(exclusions); for (var i = 0, results = [], node; node = nodes[i]; i++) if (!node._counted) results.push(node); h.unmark(exclusions); return results }, enabled: function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (!node.disabled) results.push(node); return results }, disabled: function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (node.disabled) results.push(node); return results }, checked: function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (node.checked) results.push(node); return results } }, operators: { "=": function(nv, v) { return nv == v }, "!=": function(nv, v) { return nv != v }, "^=": function(nv, v) { return nv.startsWith(v) }, "$=": 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() + "-") } }, matchElements: function(elements, expression) { var matches = (new Selector(expression)).findElements(), h = Selector.handlers; h.mark(matches); for (var i = 0, results = [], element; element = elements[i]; i++) if (element._counted) results.push(element); h.unmark(matches); return results }, findElement: function(elements, expression, index) { if (typeof expression == "number") { index = expression; expression = false } return Selector.matchElements(elements, expression || "*")[index || 0] }, findChildElements: function(element, expressions) { var exprs = expressions.join(","), expressions = []; exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) { expressions.push(m[1].strip()) }); 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 } }); function $$() { return Selector.findChildElements(document, $A(arguments)) } var Form = { reset: function(form) { $(form).reset(); return form }, serializeElements: function(elements, getHash) { var data = elements.inject({}, function(result, element) { if (!element.disabled && element.name) { var key = element.name, value = $(element).getValue(); if (value != null) if (key in result) { if (result[key].constructor != Array) result[key] = [result[key]]; result[key].push(value) } else result[key] = value } return result }); return getHash ? data : Hash.toQueryString(data) } }; Form.Methods = { serialize: function(form, getHash) { return Form.serializeElements(Form.getElements(form), getHash) }, 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) { return $(form).getElements().find(function(element) { return element.type != "hidden" && !element.disabled && ["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; options.parameters = form.serialize(true); if (params) { if (typeof params == "string") params = params.toQueryParams(); Object.extend(options.parameters, params) } if (form.hasAttribute("method") && !options.method) options.method = form.method; return new Ajax.Request(form.readAttribute("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 Hash.toQueryString(pair) } } return "" }, getValue: function(element) { element = $(element); var method = element.tagName.toLowerCase(); return Form.Element.Serializers[method](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.blur(); 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) { switch (element.type.toLowerCase()) { case "checkbox": case "radio": return Form.Element.Serializers.inputSelector(element); default: return Form.Element.Serializers.textarea(element) } }, inputSelector: function(element) { return element.checked ? element.value : null }, textarea: function(element) { return element.value }, select: function(element) { return this[element.type == "select-one" ? "selectOne" : "selectMany"](element) }, selectOne: function(element) { var index = element.selectedIndex; return index >= 0 ? this.optionValue(element.options[index]) : null }, selectMany: function(element) { var values, length = element.length; if (!length) return null; for (var i = 0, values = []; i < length; i++) { var opt = element.options[i]; if (opt.selected) values.push(this.optionValue(opt)) } return values }, optionValue: function(opt) { return Element.extend(opt).hasAttribute("value") ? opt.value : opt.text } }; Abstract.TimedObserver = function() { }; Abstract.TimedObserver.prototype = { initialize: function(element, frequency, callback) { this.frequency = frequency; this.element = $(element); this.callback = callback; this.lastValue = this.getValue(); this.registerCallback() }, registerCallback: function() { setInterval(this.onTimerEvent.bind(this), this.frequency * 1E3) }, onTimerEvent: function() { var value = this.getValue(); var changed = "string" == typeof this.lastValue && "string" == typeof value ? this.lastValue != value : String(this.lastValue) != String(value); if (changed) { this.callback(this.element, value); this.lastValue = value } } }; Form.Element.Observer = Class.create(); Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver, { getValue: function() { return Form.Element.getValue(this.element) } }); Form.Observer = Class.create(); Form.Observer.prototype = Object.extend(new Abstract.TimedObserver, { getValue: function() { return Form.serialize(this.element) } }); Abstract.EventObserver = function() { }; Abstract.EventObserver.prototype = { 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.bind(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(); Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver, { getValue: function() { return Form.Element.getValue(this.element) } }); Form.EventObserver = Class.create(); Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver, { getValue: function() { return Form.serialize(this.element) } }); if (!window.Event) var Event = new Object; 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, element: function(event) { return $(event.target || event.srcElement) }, isLeftClick: function(event) { return event.which && event.which == 1 || event.button && event.button == 1 }, pointerX: function(event) { return event.pageX || event.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft) }, pointerY: function(event) { return event.pageY || event.clientY + (document.documentElement.scrollTop || document.body.scrollTop) }, stop: function(event) { if (event.preventDefault) { event.preventDefault(); event.stopPropagation() } else { event.returnValue = false; event.cancelBubble = true } }, findElement: function(event, tagName) { var element = Event.element(event); while (element.parentNode && (!element.tagName || element.tagName.toUpperCase() != tagName.toUpperCase())) element = element.parentNode; return element }, observers: false, _observeAndCache: function(element, name, observer, useCapture) { if (!this.observers) this.observers = []; if (element.addEventListener) { this.observers.push([element, name, observer, useCapture]); element.addEventListener(name, observer, useCapture) } else if (element.attachEvent) { this.observers.push([element, name, observer, useCapture]); element.attachEvent("on" + name, observer) } }, unloadCache: function() { if (!Event.observers) return; for (var i = 0, length = Event.observers.length; i < length; i++) { Event.stopObserving.apply(this, Event.observers[i]); Event.observers[i][0] = null } Event.observers = false }, observe: function(element, name, observer, useCapture) { element = $(element); useCapture = useCapture || false; if (name == "keypress" && (Prototype.Browser.WebKit || element.attachEvent)) name = "keydown"; Event._observeAndCache(element, name, observer, useCapture) }, stopObserving: function(element, name, observer, useCapture) { if (!$) return; element = $(element); useCapture = useCapture || false; if (name == "keypress" && (Prototype.Browser.WebKit || element.attachEvent)) name = "keydown"; if (element.removeEventListener) element.removeEventListener(name, observer, useCapture); else if (element.detachEvent) try { element.detachEvent("on" + name, observer) } catch (e) { } } }); if (Prototype.Browser.IE) Event.observe(window, "unload", Event.unloadCache, false); var Position = { includeScrollOffsets: false, prepare: function() { this.deltaX = window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft || 0; this.deltaY = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0 }, realOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.scrollTop || 0; valueL += element.scrollLeft || 0; element = element.parentNode } while (element); return [valueL, valueT] }, cumulativeOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; element = element.offsetParent } while (element); return [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 == "BODY") break; var p = Element.getStyle(element, "position"); if (p == "relative" || p == "absolute") break } } while (element); return [valueL, valueT] }, offsetParent: 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 }, within: function(element, x, y) { if (this.includeScrollOffsets) return this.withinIncludingScrolloffsets(element, x, y); this.xcomp = x; this.ycomp = y; this.offset = this.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 = this.realOffset(element); this.xcomp = x + offsetcache[0] - this.deltaX; this.ycomp = y + offsetcache[1] - this.deltaY; this.offset = this.cumulativeOffset(element); return this.ycomp >= this.offset[1] && this.ycomp < this.offset[1] + element.offsetHeight && this.xcomp >= this.offset[0] && this.xcomp < this.offset[0] + element.offsetWidth }, overlap: function(mode, element) { if (!mode) return 0; if (mode == "vertical") return (this.offset[1] + element.offsetHeight - this.ycomp) / element.offsetHeight; if (mode == "horizontal") return (this.offset[0] + element.offsetWidth - this.xcomp) / element.offsetWidth }, page: function(forElement) { var valueT = 0, valueL = 0; var element = forElement; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; if (element.offsetParent == document.body) if (Element.getStyle(element, "position") == "absolute") break } while (element = element.offsetParent); element = forElement; do if (!window.opera || element.tagName == "BODY") { valueT -= element.scrollTop || 0; valueL -= element.scrollLeft || 0 } while (element = element.parentNode); return [valueL, valueT] }, clone: function(source, target) { var options = Object.extend({ setLeft: true, setTop: true, setWidth: true, setHeight: true, offsetTop: 0, offsetLeft: 0 }, arguments[2] || {}); source = $(source); var p = Position.page(source); target = $(target); var delta = [0, 0]; var parent = null; if (Element.getStyle(target, "position") == "absolute") { parent = Position.offsetParent(target); delta = Position.page(parent) } if (parent == document.body) { delta[0] -= document.body.offsetLeft; delta[1] -= document.body.offsetTop } if (options.setLeft) target.style.left = p[0] - delta[0] + options.offsetLeft + "px"; if (options.setTop) target.style.top = p[1] - delta[1] + options.offsetTop + "px"; if (options.setWidth) target.style.width = source.offsetWidth + "px"; if (options.setHeight) target.style.height = source.offsetHeight + "px" }, absolutize: function(element) { element = $(element); if (element.style.position == "absolute") return; Position.prepare(); var offsets = Position.positionedOffset(element); var top = offsets[1]; var left = offsets[0]; var width = element.clientWidth; var height = element.clientHeight; element._originalLeft = left - parseFloat(element.style.left || 0); element._originalTop = top - parseFloat(element.style.top || 0); element._originalWidth = element.style.width; element._originalHeight = element.style.height; element.style.position = "absolute"; element.style.top = top + "px"; element.style.left = left + "px"; element.style.width = width + "px"; element.style.height = height + "px" }, relativize: function(element) { element = $(element); if (element.style.position == "relative") return; Position.prepare(); 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 } }; if (Prototype.Browser.WebKit) Position.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 [valueL, valueT] }; Element.addMethods();