From 6ce5fb7ab6e31f76e57639e4d04e32af33e77ee6 Mon Sep 17 00:00:00 2001 From: Chip Black Date: Sat, 8 Jan 2011 01:51:19 -0600 Subject: [PATCH] Add web code, license, and simple readme --- COPYING | 29 + README | 14 + www-configs/htaccess | 12 + www/css/blerg.css | 129 + www/css/doc.css | 22 + www/doc/index.html | 263 ++ www/images/blerglogo.png | Bin 0 -> 11384 bytes www/images/rss.png | Bin 0 -> 764 bytes www/images/title_bg.png | Bin 0 -> 632 bytes www/index.html | 118 + www/js/blerg.js | 457 +++ www/js/prototype.js | 6082 ++++++++++++++++++++++++++++++++++++++ 12 files changed, 7126 insertions(+) create mode 100644 COPYING create mode 100644 README create mode 100644 www-configs/htaccess create mode 100644 www/css/blerg.css create mode 100644 www/css/doc.css create mode 100644 www/doc/index.html create mode 100644 www/images/blerglogo.png create mode 100644 www/images/rss.png create mode 100644 www/images/title_bg.png create mode 100644 www/index.html create mode 100644 www/js/blerg.js create mode 100644 www/js/prototype.js diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..174c855 --- /dev/null +++ b/COPYING @@ -0,0 +1,29 @@ +Copyright (c) 2011, Chip Black +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +* Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +* Neither the name of the Dominion of Awesome nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/README b/README new file mode 100644 index 0000000..74b8ad1 --- /dev/null +++ b/README @@ -0,0 +1,14 @@ +For full documentation, please read www/doc/index.html. + +The website CSS references the Alte Haas Grotesk font, which has not +been included in this distribution due to unknown legal status. If you +want it, it's available for free here: +http://www.dafont.com/alte-haas-grotesk.font + +The Prototype JavaScript Framework is included under a MIT license that +I can't read right now because dev.rubyonrails.org is down. :/ + +The RSS feed icon is from http://feedicons.com/. + +The puking bird logo is Copyright (C) 2010 James Watson, and is used +with permission. diff --git a/www-configs/htaccess b/www-configs/htaccess new file mode 100644 index 0000000..765c4d4 --- /dev/null +++ b/www-configs/htaccess @@ -0,0 +1,12 @@ +AddDefaultCharset utf-8 + +RewriteEngine On +RewriteRule ^info/(.*) /blerg.cgi/info/$1 [L] +RewriteRule ^create$ /blerg.cgi/create [L] +RewriteRule ^login$ /blerg.cgi/login [L] +RewriteRule ^logout$ /blerg.cgi/logout [L] +RewriteRule ^get/(.*) /blerg.cgi/get/$1 [L] +RewriteRule ^tag/(.*) /blerg.cgi/tag/$1 [L] +RewriteRule ^put$ /blerg.cgi/put [L] + +RewriteRule ^rss/(.*) /rss.cgi/$1 [L] diff --git a/www/css/blerg.css b/www/css/blerg.css new file mode 100644 index 0000000..efaec44 --- /dev/null +++ b/www/css/blerg.css @@ -0,0 +1,129 @@ +@font-face { + font-family: "Alte Haas Grotesk Bold"; + src: url("/fonts/AlteHaasGroteskBold.ttf"); +} + +body { + margin: 0; + font-family: sans-serif; + background-color: white; +} + +a > img { + border: 0; +} + +#header { + background-image: url(/images/title_bg.png); + background-size: auto 100%; + background-repeat: repeat-x; + background-color: #1E1E1E; + color: white; + padding: 8px 8px 16px 8px; +} + +#header .logo { + float: left; + margin-right: 10px; +} + +#header h1 { + margin: 4px 0 0 0; + font-size: 65px; + text-shadow: black 0px 2px; +} + +#header a { + color: inherit; + text-decoration: none; +} + +#header a:hover { + text-decoration: underline; +} + +#header h2 { + margin: 0; + font-size: 28px; + text-shadow: black 0px 1px; +} + +#siteid { + float: left; + width: 40%; +} + +#controls { + float: right; + width: 50%; + margin-top: 8px; + margin-right: 8px; + font-size: large; + text-align: right; +} + +h2 { + font-size: 20pt; + margin-bottom: 28pt; +} + +h1, h2, h3 { + font-family: "Alte Haas Grotesk Bold", sans-serif; +} + +#main { + padding: 15pt 15pt 20pt 15pt; +} + +#signup { + padding: 8pt; +} + +#main h2, #signup h2, #about h2 { + margin: 8pt 0; +} + +#post { + padding: 20pt; + margin-bottom: 1.5em; +} + +#post h2 { + font-size: 14pt; + margin: 4pt 0 0 -4px; +} + +#post\.buttons { + text-align: right; + margin-right: -4px; +} + +#post\.buttons input { + font-size: 14pt; +} + +#post\.content { + font-size: 14pt; + font-family: sans-serif; + margin: 4pt 0 4pt -4px; + border-width: 0; + padding: 4px; + width: 100%; +} + +.record { + margin: 8pt 0 24pt 0; + font-size: 14pt; +} + +.record .info { + color: #8F8F8F; + font-size: small; + font-style: italic; +} + +#navigation { + font-size: small; + color: #8F8F8F; + text-align: right; +} diff --git a/www/css/doc.css b/www/css/doc.css new file mode 100644 index 0000000..ff2636c --- /dev/null +++ b/www/css/doc.css @@ -0,0 +1,22 @@ +body { + font: 14pt serif; +} + +h1, h2, h3, h4, h5 { + font-family: sans-serif; + clear: both; +} + +.pizzapie { + width: 25%; + font-family: sans-serif; + font-size: 12pt; + float: right; + margin-left: 16pt; + clear: both; +} + +.pizzapie td { + padding: 8pt; + text-align: center; +} diff --git a/www/doc/index.html b/www/doc/index.html new file mode 100644 index 0000000..3d40ad0 --- /dev/null +++ b/www/doc/index.html @@ -0,0 +1,263 @@ + + + +Blërg Documentation + + + + +

Blërg Documentation

+ +

Installing

+ +

Getting the source

+ +

There's no stable release, yet, but you can get everything currently +running on blerg.dominionofawesome.com by cloning the git repository at +http://git.bytex64.net/blerg.git. + +

Requirements

+ +

Blërg has varying requirements depending on how you want to run it +— as a standalone HTTP server, or as a CGI. You will need: + +

+ +

As a standalone HTTP, server, you will also need: + +

+ +

Or, as a CGI, you will need: + +

+ +

Configuring

+ +

I know I'm gonna get shit for not using an autoconf-based system, but +I really didn't want to waste time figuring it out. You should edit +libs.mk and put in the paths where you can find headers and libraries +for the above requirements. + +

Also, further apologies to BSD folks — I've probably committed +several unconscious Linux-isms. It would not surprise me if the +makefile refuses to work with BSD make. If you have patches or +suggestions on how to make Blërg more portable, I'd be happy to hear +them. + +

Building

+ +

At this point, it should be gravy. Type 'make' and in a few seconds, +you should have http_blerg, cgi_blerg, +rss, and blergtool. Each of those can be made +individually as well, if you, for example, don't want to install the +prerequisites for http_blerg or cgi_blerg. + +

Installing

+ +

While it's not required, Blërg will be easier to set up if you +configure it to work from the root of your website. For this reason, +it's better to use a subdomain (i.e., blerg.yoursite.com is easier than +yoursite.com/blerg/). If you do want to put it in a subdirectory, you +will have to modify www/js/blerg.js and change baseURL at the top. The +CGI version should work fine this way, but the HTTP version will require +the request to be rewritten, as it expects to be serving from the root. + +

For the standalone web server:

+ +

Right now, http_blerg doesn't serve any static assets, so you're +going to have to put it behind a real webserver like apache, lighttpd, +nginx, or similar. Set the document root to the www directory, then +proxy /info, /create, /login, /logout, /get, /tag, and /put to +http_blerg. + +

For the CGI version:

+ +

Copy the files in www to the root of your web server. Copy cgi_blerg +to blerg.cgi somewhere on your web server. Included in www-configs is a +.htaccess file for apache that will rewrite the URLs. If you need to +call cgi_blerg something other than blerg.cgi, the .htaccess file will +need to be modified. + +

The extra RSS CGI

+ +

There is an optional RSS cgi (called simply rss) that will serve RSS +feeds for users. Install this like the CGI version above (on my server, +it's at /rss.cgi). + + +

Design

+ +

Motivation

+ +

Blërg was created as the result of a thought experiment: "What if +Twitter didn't need thousands of servers? What if its millions of users +could be handled by a single highly efficient server?" This is probably +an unreachable goal due to the sheer amount of I/O, but we could +certainly do better. Blërg was designed with very simple requirements: + +

    +
  1. Store and fetch small chunks of text efficiently
    2. +
  2. Create fast indexes for hash tags and @ mentions
    3. +
  3. Provide a HTTP interface web apps can use
    4. +
+ +

And to further simplify, I didn't bother handling deletes, full text +search, or more complicated tag searches. Blërg only does the basics. + +

Web App Stack

+ + + + + + + + + + + + + + + +
Classical model
Client App
HTML/Javascript
Webserver
Apache, lighttpd, nginx, etc.
Server App
Python, Perl, Ruby, etc.
Database
MySQL, PostgreSQL, MongoDB, CouchDB, etc.
+ +

Modern web applications have at least a four-layer approach. You +have the client-side browser app written in HTML and Javascript, the web +server, the server-side application typically written in some scripting +language (or, if it's high-performance, ASP/Java/C/C++), and the +database (usually SQL, but newer web apps seem to love object-oriented +DBs). + + + + + + + + + +
Blërg model
Blërg Client App
HTML/Javascript
Blërg Database
+ +

Blërg compresses the last two or three layers into one application. +Blërg can be run as either a standalone web server, or as a CGI (FastCGI +support is planned, but I just don't care right now). Less waste, more +throughput. As a consequence of this, the entirety of the application +logic that the user sees is implemented in the client app in Javascript. +That's why all the URLs have #'s — the page is loaded once and +switched on the fly to show different views, further reducing load on +the server. Even parsing hash tags and URLs are done in client JS. + +

The API is simple and pragmatic. It's not entirely RESTful, but is +rather designed to work well with web-based front-ends. Client data is +always POSTed with the usual application/x-www-form-urlencoded encoding, +and server data is always returned in JSON format. + +

The HTTP interface to the database idea has already been done by CouchDB, though I didn't know that +until after I wrote Blërg. :) + +

Database

+ +

Early in the design process, I decided to blatantly copy varnish and rely heavily on +mmap for I/O. Each user in Blërg has their own database, which consists +of one or more data and index files, and a metadata file. When a +database is opened, only the metadata is actually read (currently a +single 64-bit integer keeping track of the last record id). The data +and index files are memory mapped, which hopefully makes things more +efficient by letting the OS handle when to read from disk. The index +files are preallocated because I believe it's more efficient than +writing to it 40 bytes at a time as records are added. Here's some info +on the database's limitations: + + + + + +
maximum record size65535 bytes
maximum number of records per database264 - 1 bytes
maximum number of tags per record1024
+ +

To provide support for +32-bit machines, and to not create grossly huge and unwieldy data files, +the database layer splits data and index files into many "segments" +containing at most 64K entries each. Those of you doing some quick math +in your heads may note that this could cause a problem on 32-bit +machines — if a full segment contains entries of the maximum +length, you'll have to mmap 4GB (32-bit Linux gives each process only +3GB of virtual memory addressing). Right now, 32-bit users should +change RECORDS_PER_SEGMENT in config.h to +something lower like 32768. In the future, I might do something smart +like not mmaping the whole fracking file. + +

A record is stored by first appending the data to the data file, then +writing an index entry containing the offset and length of the data, as +well as the timestamp, to the index file. Since each index entry is +fixed length, we can find the index entry simply by multiplying the +record number we want by the size of the index entry. Upshot: +constant-time random-access reads and constant-time writes. As an added +bonus, because we're using append-only files, we get lockless reads. + +

Tags are handled by a separate set of indices, one per tag. Each +index record simply stores the user and record number. Tags are +searched by opening the tag file, reading the last 50 entries or so, and +then reading all the records listed. Voila, fast tag lookups. + +

Also, keeping with the style of modern object databases, I haven't +implemented any data safety (har har). Blërg does not sync anything to +disk before returning success. This should make Blërg extremely fast, +and totally unreliable in a crash. But that's the way you want it, +right? :] + +

Problems and Future Work

+ +

I couldn't find a really good fast HTTP server library. +Libmicrohttpd is small, but it's focused on embedded applications, so it +often eschews speed for small memory footprint. This is especially +apparent when you watch it chew through a POST request 300 bytes at a +time even though you've specified a buffer size of 256K. Http_blerg is +still pretty fast this way (on my 2GHz Opteron 246, siege says it serves a +690-byte /get request at about 945 transactions per second, average +response time 0.05 seconds, with 100 concurrent accesses), but a +high-efficiency HTTP server implementation could knock this out of the +park. + +

Libmicrohttpd is also really difficult to work with. If you look at +the code, http_blerg.c is about 70% longer than cgi_blerg.c simply +because of all the iterator hoops I had to jump through to process POST +requests. And if you can believe it, I wrote http_blerg.c first. If +I'd done it the other way around, I probably would have given up on +libmicrohttpd. :-/ + +

The data structures written to disk are dependent on the size and +endianness of the primitive data types on your architecture and OS. +This means that the databases are not portable. A dump/import tool is +probably the easiest way to handle this. + +

I do want to make a FastCGI version eventually, and this will +probably be a rather simple modification of cgi_blerg. + +

Implementing deletes will be... interesting. There is room in the +record index for a 'deleted' flag, but the problem is deleting any tags +referenced in the data. This requires rescanning the record content and +putting a 'deleted' flag in the tag indices. This will not be pretty, +so I'm just going to ignore it and hope nobody makes any mistakes. ;] + +

Tag indices can grow arbitrarily large, which will cause problems for +32-bit machines around the 3GB mark. Still, that's something like 80 +million tags, so maybe it's not something to worry about. + +

The API currently requires the client to transmit the user's password +in the clear. 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--- /dev/null +++ b/www/index.html @@ -0,0 +1,118 @@ + + + +Blërg! + + + + + + + + +

+ + +
+ + +
+

I am 12 and what is this

+ +

Blërg is a miniblogging platform. It's less limited than + microblogging platforms like Twitter, but much simpler than + full-blown blogging platforms like Wordpress or Livejournal. Blërg is also an open + source tagged text database engine written in C that does the back-end + work.

+ +

But what's wrong with Twitter?

+ +

I'M GLAD YOU ASKED. While I don't believe the basic social premise + of Twitter is broken, there are two facets of it that are IMNSHO just + wrong:

+ +
    +
  1. Ruby on Rails - Using rails to prototype a system is + fine — scaling up to a million hits a day with it is just poor + engineering. As the service grew, I'm sure it cost them a lot more + time than it saved.
    2. +
  2. 140 characters is not enough - I routinely write + sentences longer than 140 characters, so I can't imagine even beginning to + make a point in such a small space. This textual confinement has led to the + rise of URL shorteners, which are breaking the internet. +
+ +

Blërg solves these problems by applying absurd reactionary + engineering. Blërg's database backend is a custom C program that + handles requests over HTTP and stores data in a very small and + efficient indexed log-structured database. The frontend is done + entirely in client-side Javascript. A single post can be up to 65535 + bytes in length.

+ +

Which is not to say that I believe writing your service in C is the + solution to all your problems. Clearly, this approach has just as + many hairy problems that will bite you in the ass sooner or later. + The best way, as with most things, lies somewhere in the middle of + high-level abstraction and ZOMGHARDCORE OPTIMIZATION.

+ +

Is this a joke?

+ +

Yes. No. Maybe. Blërg is an exercise in constructive satire — a + fully functional service created in a fit of hubris to poke fun at Twitter's + engineering. It's just for fun, but no one is going to keep you from using + it seriously. :]

+
+ + + +
+ + +
Username:
Password:
+ + + + + + diff --git a/www/js/blerg.js b/www/js/blerg.js new file mode 100644 index 0000000..7bb5fe2 --- /dev/null +++ b/www/js/blerg.js @@ -0,0 +1,457 @@ +// Config +var baseURL = ''; +var recordTemplate = new Template( + '

#{data}
Posted #{date}
' +); +var tagRecordTemplate = new Template( + '
#{data}
Posted by @#{author} on #{date}
' +); + +// Page elements +var items; + +// Other globals +var currentPager; +var loginStatus; + +// Object to keep track of login status +function LoginStatus() { + var cookies = {}; + document.cookie.split(/;\s+/).each(function(v) { + kv = v.split('='); + cookies[kv[0]] = kv[1]; + }); + if (cookies.auth && cookies.username) { + this.loggedIn = true; + this.username = cookies.username; + } else { + this.loggedIn = false; + this.username = null; + } + this.update(); +} + +LoginStatus.prototype.login = function(username, password) { + new Ajax.Request(baseURL + '/login', { + parameters: { + username: username, + password: password, + }, + onSuccess: function(r) { + var j = r.responseText.evalJSON(); + if (j && j.status == 'success') { + this.loggedIn = true; + this.username = username; + document.cookie = "username=" + username; + $('login.password').value = ''; + this.update(); + } else { + alert("Could not log in"); + $('login.username').focus(); + } + }.bind(this), + onFailure: function(r) { + alert("Could not log in"); + $('login.username').focus(); + } + }); +} + +LoginStatus.prototype.logout = function() { + new Ajax.Request(baseURL + '/logout', { + parameters: { + username: this.username, + }, + onSuccess: function(r) { + this.loggedIn = false; + document.cookie = "auth=; expires=1-Jan-1970 00:00:00 GMT"; + this.update(); + }.bind(this), + }); + document.cookie = "username=; expires=1-Jan-1970 00:00:00 GMT"; +} + +LoginStatus.prototype.update = function() { + if (this.loggedIn) { + $('userlink').href = '#' + this.username; + $('userlink').update('@' + this.username); + $('login').hide(); + $('logout').show(); + } else { + $('post').hide(); + $('login').show(); + $('logout').hide(); + } +} + +LoginStatus.prototype.post = function(msg) { + if (!this.loggedIn) { + alert("You are not logged in!"); + exit(0); + } + + new Ajax.Request(baseURL + '/put', { + parameters: { + username: this.username, + data: msg + }, + onSuccess: function(r) { + var j = r.responseText.evalJSON(); + if (j && j.status == 'success') { + $('post.content').value = ''; + if (location.hash != '#' + this.username) { + location.hash = this.username; + hashSwitch(); + } else { + currentPager.itemCount++; + currentPager.pageStart = null; + currentPager.loadItems(); + } + } else { + alert('Post failed!'); + } + }.bind(this), + onFailure: function(r) { + alert('Post failed!'); + } + }); +} + + +// Base object for paged data +function Pager() { + this.itemsPerPage = 10; +} + +Pager.prototype.initPager = function() { + this.itemCache = new Hash(); + this.pageStart = null; +} + +Pager.prototype.olderPage = function() { + if (this.pageStart >= this.itemsPerPage) { + this.pageStart -= this.itemsPerPage; + this.displayItems(); + } +} + +Pager.prototype.newerPage = function() { + if (this.pageStart + this.itemsPerPage < this.itemCount) { + this.pageStart += this.itemsPerPage; + this.displayItems(); + } +} + +Pager.prototype.addItems = function(items) { + items.each(function(v) { + if (!this.itemCache[v.id]) + this.itemCache[v.id] = v; + }.bind(this)); +} + +Pager.prototype.displayItems = function() { + if (this.pageStart == undefined) + this.pageStart == this.itemCount - 1; + items.update(); + + if (this.pageStart != undefined && this.itemCache[this.pageStart]) { + var end = (this.pageStart >= this.itemsPerPage ? this.pageStart - this.itemsPerPage + 1 : 0); + for (var i = this.pageStart; i >= end; i--) { + items.insert(this.itemCache[i].html); + } + } else { + items.insert("There doesn't seem to be anything here!"); + } + + if (this.pageStart < this.itemCount - 1) + $('newer_link').show(); + else + $('newer_link').hide(); + + if (this.pageStart >= 10) + $('older_link').show(); + else + $('older_link').hide(); +} + + +// Object to render user pages +function User(username) { + this.initPager(); + this.username = username; + + new Ajax.Request(baseURL + '/info/' + username, { + method: 'get', + onSuccess: function(r) { + var j = r.responseText.evalJSON(); + if (j) { + this.itemCount = parseInt(j.record_count); + this.displayItems(); + } + }.bind(this), + }); +} +User.prototype = new Pager(); +User.prototype.constructor = User; + +User.prototype.show = function() { + $$('[name=section]').each(function(v) { v.update(' @' + this.username) }.bind(this)); + $('welcome').hide(); + items.show(); + $('reflink').href = '#ref/' + this.username; + $('rss').show(); + $('rsslink').href = '/rss/' + this.username; +} + +User.prototype.loadItems = function(from, to) { + var url; + if (from != undefined && to != undefined) { + url = baseURL + '/get/' + this.username + '/' + from + '-' + to; + this.pageStart = to; + } else { + url = baseURL + '/get/' + this.username; + } + + new Ajax.Request(url, { + method: 'get', + onSuccess: function(r) { + var records = r.responseText.evalJSON(); + if (records && records.length > 0) { + records.each(function(v) { + v.id = v.record; + mangleRecord(v, recordTemplate); + }); + this.addItems(records); + if (!this.pageStart) + this.pageStart = records[0].recInt; + } + this.displayItems(); + }.bind(this), + onFailure: function(r) { + this.displayItems(); + }.bind(this), + on404: function(r) { + displayError('User not found'); + } + }); +} + +function mangleRecord(record, template) { + record.recInt = parseInt(record.record); + + // Sanitize HTML input + record.data = record.data.replace('&', '&').replace('<', '<').replace('>', '>'); + + // Turn HTTP URLs into links + record.data = record.data.replace(/(\s|^)(https?:\/\/[a-zA-Z0-9.-]*[a-zA-Z0-9](\/(\S*[^.!,;?()\s])?)?)/g, '$1$2'); + + // Turn markdown links into links + record.data = record.data.replace(/(\s|^)\[([^\]]+)\]\((https?:\/\/[a-zA-Z0-9.-]*[a-zA-Z0-9](\/[^)]*?)?)\)/, '$1$2'); + + // Turn refs and tags into links + record.data = record.data.replace(/(\s|^)#(\w+)/g, '$1#$2'); + record.data = record.data.replace(/(\s|^)@(\w+)/g, '$1@$2'); + + // Turn newlines into linebreaks and paragraphs + record.data = record.data.replace(/\r?\n\r?\n/g, "

").replace(/\r?\n/g, "
"); + + record.date = (new Date(record.timestamp * 1000)).toString(); + record.html = template.evaluate(record); +} + +function displayError(msg) { + items.innerText = msg; +} + + +// Object for browsing tags +function Tag(type, tag) { + this.initPager(); + this.type = type; + this.tag = tag; + + var url = baseURL + "/tag/"; + switch(type) { + case 'tag': + //url += '%23'; + url += 'H'; // apache is eating the hash, even encoded. Probably a security feature. + break; + case 'ref': + url += '%40'; + break; + default: + alert('Invalid tag type: ' + type); + return; + } + url += tag; + + new Ajax.Request(url, { + method: 'get', + onSuccess: function(r) { + var j = r.responseText.evalJSON(); + if (j) { + var maxid = j.length - 1; + j.each(function(v, i) { + v.id = maxid - i; + mangleRecord(v, tagRecordTemplate) + }); + this.addItems(j); + this.pageStart = j.length - 1; + } + this.displayItems(); + }.bind(this), + onFailure: function(r) { + this.displayItems(); + }.bind(this) + }); + +} +Tag.prototype = new Pager(); +Tag.prototype.constructor = Tag; + +Tag.prototype.show = function() { + var ctype = {ref: '@', tag: '#'}[this.type]; + + $$('[name=section]').each(function(v) { + v.update(' about ' + ctype + this.tag); + }.bind(this)); + $('welcome').hide(); + $('post').hide(); + $('older_link').hide(); + $('newer_link').hide(); + $('rss').hide(); + items.show(); +} + +function postPopup() { + if (loginStatus.loggedIn) { + var post = $('post'); + if (post.visible()) { + post.hide(); + } else { + post.show(); + if (currentPager.username && currentPager.username != loginStatus.username && !$('post.content').value) { + $('post.content').value = '@' + currentPager.username + ': '; + } + $('post.content').focus(); + } + } +} + +function signup() { + var username = $('signup.username').value; + var password = $('signup.password').value; + + new Ajax.Request(baseURL + '/create', { + parameters: { + username: username, + password: password, + }, + onSuccess: function(r) { + $('signup').hide(); + location.hash = username; + hashSwitch(); + + loginStatus.login(username, password); + }, + onFailure: function(r) { + alert("Failed to create user"); + } + }); +} + +function signup_cancel() { + $('signup').hide(); + hashSwitch(); +} + +function newer_page() { + if (currentPager) + currentPager.newerPage(); +} + +function older_page() { + if (currentPager) + currentPager.olderPage(); +} + +var resizePostContentTimeout = null; +function resizePostContent() { + if (resizePostContentTimeout) + clearTimeout(resizePostContentTimeout); + resizePostContentTimeout = setTimeout(function() { + var c = $('post.content'); + var lines = Math.floor(c.value.length / (100 * (c.clientWidth / 1000))) + 1; + var m = c.value.match(/\r?\n/g); + if (m) + lines += m.length; + if (lines <= 3) { + c.style.height = ""; + } else { + c.style.height = (lines * 17) + "pt"; + } + resizePostContentTimeout = null; + }, 150); +} + +function hashSwitch() { + var m = location.hash.match(/^#((ref|tag)\/)?(\w+)(:(\d+))?/); + if (m) { + if (m[1]) { + currentPager = new Tag(m[2], m[3]); + currentPager.show(); + } else { + if (!currentPager || currentPager.username != m[3]) + currentPager = new User(m[3]); + currentPager.show(); + loginStatus.update(); + + if (m[5]) { + var r = parseInt(m[5]); + currentPager.showRecord = r; + if (currentPager.recordCache[r]) { + currentPager.displayItems(); + } else { + currentPager.loadItems((r >= 49 ? r - 49 : 0), r); + } + } else { + currentPager.pageStart = currentPager.itemCount - 1; + currentPager.loadItems(); + } + } + } else { + $$('[name=section]').each(function(v) { v.update('Welcome') }); + $('signup').hide(); + items.update(); + items.hide(); + $('newer_link').hide(); + $('older_link').hide(); + $('welcome').show(); + $('rss').hide(); + } +} + +var lastHash; +function hashCheck() { + if (location.hash != lastHash) { + lastHash = location.hash; + hashSwitch(); + } +} + +function init() { + items = $('items'); + loginStatus = new LoginStatus(); + + lastHash = location.hash; + hashSwitch(); + + setInterval(hashCheck, 250); + + document.body.observe('keyup', function(event) { + if (event.shiftKey && event.keyCode == '32') { + postPopup(); + event.stop(); + } + }); +} diff --git a/www/js/prototype.js b/www/js/prototype.js new file mode 100644 index 0000000..474b223 --- /dev/null +++ b/www/js/prototype.js @@ -0,0 +1,6082 @@ +/* Prototype JavaScript framework, version 1.7 + * (c) 2005-2010 Sam Stephenson + * + * Prototype is freely distributable under the terms of an MIT-style license. + * For details, see the Prototype web site: http://www.prototypejs.org/ + * + *--------------------------------------------------------------------------*/ + +var Prototype = { + + Version: '1.7', + + Browser: (function(){ + var ua = navigator.userAgent; + var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]'; + return { + IE: !!window.attachEvent && !isOpera, + Opera: isOpera, + WebKit: ua.indexOf('AppleWebKit/') > -1, + Gecko: ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1, + MobileSafari: /Apple.*Mobile/.test(ua) + } + })(), + + BrowserFeatures: { + XPath: !!document.evaluate, + + SelectorsAPI: !!document.querySelector, + + ElementExtensions: (function() { + var constructor = window.Element || window.HTMLElement; + return !!(constructor && constructor.prototype); + })(), + SpecificElementExtensions: (function() { + if (typeof window.HTMLDivElement !== 'undefined') + return true; + + var div = document.createElement('div'), + form = document.createElement('form'), + isSupported = false; + + if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) { + isSupported = true; + } + + div = form = null; + + return isSupported; + })() + }, + + ScriptFragment: ']*>([\\S\\s]*?)<\/script>', + JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/, + + emptyFunction: function() { }, + + K: function(x) { return x } +}; + +if (Prototype.Browser.MobileSafari) + Prototype.BrowserFeatures.SpecificElementExtensions = false; + + +var Abstract = { }; + + +var Try = { + these: function() { + var returnValue; + + for (var i = 0, length = arguments.length; i < length; i++) { + var lambda = arguments[i]; + try { + returnValue = lambda(); + break; + } catch (e) { } + } + + return returnValue; + } +}; + +/* Based on Alex Arnell's inheritance implementation. */ + +var Class = (function() { + + var IS_DONTENUM_BUGGY = (function(){ + for (var p in { toString: 1 }) { + if (p === 'toString') return false; + } + return true; + })(); + + function subclass() {}; + function create() { + var parent = null, properties = $A(arguments); + if (Object.isFunction(properties[0])) + parent = properties.shift(); + + function klass() { + this.initialize.apply(this, arguments); + } + + Object.extend(klass, Class.Methods); + klass.superclass = parent; + klass.subclasses = []; + + if (parent) { + subclass.prototype = parent.prototype; + klass.prototype = new subclass; + parent.subclasses.push(klass); + } + + for (var i = 0, length = properties.length; i < length; i++) + klass.addMethods(properties[i]); + + if (!klass.prototype.initialize) + klass.prototype.initialize = Prototype.emptyFunction; + + klass.prototype.constructor = klass; + return klass; + } + + function addMethods(source) { + var ancestor = this.superclass && this.superclass.prototype, + properties = Object.keys(source); + + if (IS_DONTENUM_BUGGY) { + if (source.toString != Object.prototype.toString) + properties.push("toString"); + if (source.valueOf != Object.prototype.valueOf) + properties.push("valueOf"); + } + + for (var i = 0, length = properties.length; i < length; i++) { + var property = properties[i], value = source[property]; + if (ancestor && Object.isFunction(value) && + value.argumentNames()[0] == "$super") { + var method = value; + value = (function(m) { + return function() { return ancestor[m].apply(this, arguments); }; + })(property).wrap(method); + + value.valueOf = method.valueOf.bind(method); + value.toString = method.toString.bind(method); + } + this.prototype[property] = value; + } + + return this; + } + + return { + create: create, + Methods: { + addMethods: addMethods + } + }; +})(); +(function() { + + var _toString = Object.prototype.toString, + NULL_TYPE = 'Null', + UNDEFINED_TYPE = 'Undefined', + BOOLEAN_TYPE = 'Boolean', + NUMBER_TYPE = 'Number', + STRING_TYPE = 'String', + OBJECT_TYPE = 'Object', + FUNCTION_CLASS = '[object Function]', + BOOLEAN_CLASS = '[object Boolean]', + NUMBER_CLASS = '[object Number]', + STRING_CLASS = '[object String]', + ARRAY_CLASS = '[object Array]', + DATE_CLASS = '[object Date]', + NATIVE_JSON_STRINGIFY_SUPPORT = window.JSON && + typeof JSON.stringify === 'function' && + JSON.stringify(0) === '0' && + typeof JSON.stringify(Prototype.K) === 'undefined'; + + function Type(o) { + switch(o) { + case null: return NULL_TYPE; + case (void 0): return UNDEFINED_TYPE; + } + var type = typeof o; + switch(type) { + case 'boolean': return BOOLEAN_TYPE; + case 'number': return NUMBER_TYPE; + case 'string': return STRING_TYPE; + } + return OBJECT_TYPE; + } + + function extend(destination, source) { + for (var property in source) + destination[property] = source[property]; + return destination; + } + + function inspect(object) { + try { + if (isUndefined(object)) return 'undefined'; + if (object === null) return 'null'; + return object.inspect ? object.inspect() : String(object); + } catch (e) { + if (e instanceof RangeError) return '...'; + throw e; + } + } + + function toJSON(value) { + return Str('', { '': value }, []); + } + + function Str(key, holder, stack) { + var value = holder[key], + type = typeof value; + + if (Type(value) === OBJECT_TYPE && typeof value.toJSON === 'function') { + value = value.toJSON(key); + } + + var _class = _toString.call(value); + + switch (_class) { + case NUMBER_CLASS: + case BOOLEAN_CLASS: + case STRING_CLASS: + value = value.valueOf(); + } + + switch (value) { + case null: return 'null'; + case true: return 'true'; + case false: return 'false'; + } + + type = typeof value; + switch (type) { + case 'string': + return value.inspect(true); + case 'number': + return isFinite(value) ? String(value) : 'null'; + case 'object': + + for (var i = 0, length = stack.length; i < length; i++) { + if (stack[i] === value) { throw new TypeError(); } + } + stack.push(value); + + var partial = []; + if (_class === ARRAY_CLASS) { + for (var i = 0, length = value.length; i < length; i++) { + var str = Str(i, value, stack); + partial.push(typeof str === 'undefined' ? 'null' : str); + } + partial = '[' + partial.join(',') + ']'; + } else { + var keys = Object.keys(value); + for (var i = 0, length = keys.length; i < length; i++) { + var key = keys[i], str = Str(key, value, stack); + if (typeof str !== "undefined") { + partial.push(key.inspect(true)+ ':' + str); + } + } + partial = '{' + partial.join(',') + '}'; + } + stack.pop(); + return partial; + } + } + + function stringify(object) { + return JSON.stringify(object); + } + + function toQueryString(object) { + return $H(object).toQueryString(); + } + + function toHTML(object) { + return object && object.toHTML ? object.toHTML() : String.interpret(object); + } + + function keys(object) { + if (Type(object) !== OBJECT_TYPE) { throw new TypeError(); } + var results = []; + for (var property in object) { + if (object.hasOwnProperty(property)) { + results.push(property); + } + } + return results; + } + + function values(object) { + var results = []; + for (var property in object) + results.push(object[property]); + return results; + } + + function clone(object) { + return extend({ }, object); + } + + function isElement(object) { + return !!(object && object.nodeType == 1); + } + + function isArray(object) { + return _toString.call(object) === ARRAY_CLASS; + } + + var hasNativeIsArray = (typeof Array.isArray == 'function') + && Array.isArray([]) && !Array.isArray({}); + + if (hasNativeIsArray) { + isArray = Array.isArray; + } + + function isHash(object) { + return object instanceof Hash; + } + + function isFunction(object) { + return _toString.call(object) === FUNCTION_CLASS; + } + + function isString(object) { + return _toString.call(object) === STRING_CLASS; + } + + function isNumber(object) { + return _toString.call(object) === NUMBER_CLASS; + } + + function isDate(object) { + return _toString.call(object) === DATE_CLASS; + } + + function isUndefined(object) { + return typeof object === "undefined"; + } + + extend(Object, { + extend: extend, + inspect: inspect, + toJSON: NATIVE_JSON_STRINGIFY_SUPPORT ? stringify : toJSON, + toQueryString: toQueryString, + toHTML: toHTML, + keys: Object.keys || keys, + values: values, + clone: clone, + isElement: isElement, + isArray: isArray, + isHash: isHash, + isFunction: isFunction, + isString: isString, + isNumber: isNumber, + isDate: isDate, + isUndefined: isUndefined + }); +})(); +Object.extend(Function.prototype, (function() { + var slice = Array.prototype.slice; + + function update(array, args) { + var arrayLength = array.length, length = args.length; + while (length--) array[arrayLength + length] = args[length]; + return array; + } + + function merge(array, args) { + array = slice.call(array, 0); + return update(array, args); + } + + function argumentNames() { + var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1] + .replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '') + .replace(/\s+/g, '').split(','); + return names.length == 1 && !names[0] ? [] : names; + } + + function bind(context) { + if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this; + var __method = this, args = slice.call(arguments, 1); + return function() { + var a = merge(args, arguments); + return __method.apply(context, a); + } + } + + function bindAsEventListener(context) { + var __method = this, args = slice.call(arguments, 1); + return function(event) { + var a = update([event || window.event], args); + return __method.apply(context, a); + } + } + + function curry() { + if (!arguments.length) return this; + var __method = this, args = slice.call(arguments, 0); + return function() { + var a = merge(args, arguments); + return __method.apply(this, a); + } + } + + function delay(timeout) { + var __method = this, args = slice.call(arguments, 1); + timeout = timeout * 1000; + return window.setTimeout(function() { + return __method.apply(__method, args); + }, timeout); + } + + function defer() { + var args = update([0.01], arguments); + return this.delay.apply(this, args); + } + + function wrap(wrapper) { + var __method = this; + return function() { + var a = update([__method.bind(this)], arguments); + return wrapper.apply(this, a); + } + } + + function methodize() { + if (this._methodized) return this._methodized; + var __method = this; + return this._methodized = function() { + var a = update([this], arguments); + return __method.apply(null, a); + }; + } + + return { + argumentNames: argumentNames, + bind: bind, + bindAsEventListener: bindAsEventListener, + curry: curry, + delay: delay, + defer: defer, + wrap: wrap, + methodize: methodize + } +})()); + + + +(function(proto) { + + + function toISOString() { + 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'; + } + + + function toJSON() { + return this.toISOString(); + } + + if (!proto.toISOString) proto.toISOString = toISOString; + if (!proto.toJSON) proto.toJSON = toJSON; + +})(Date.prototype); + + +RegExp.prototype.match = RegExp.prototype.test; + +RegExp.escape = function(str) { + return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1'); +}; +var PeriodicalExecuter = Class.create({ + initialize: function(callback, frequency) { + this.callback = callback; + this.frequency = frequency; + this.currentlyExecuting = false; + + this.registerCallback(); + }, + + registerCallback: function() { + this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000); + }, + + execute: function() { + this.callback(this); + }, + + stop: function() { + if (!this.timer) return; + clearInterval(this.timer); + this.timer = null; + }, + + onTimerEvent: function() { + if (!this.currentlyExecuting) { + try { + this.currentlyExecuting = true; + this.execute(); + this.currentlyExecuting = false; + } catch(e) { + this.currentlyExecuting = false; + throw e; + } + } + } +}); +Object.extend(String, { + interpret: function(value) { + return value == null ? '' : String(value); + }, + specialChar: { + '\b': '\\b', + '\t': '\\t', + '\n': '\\n', + '\f': '\\f', + '\r': '\\r', + '\\': '\\\\' + } +}); + +Object.extend(String.prototype, (function() { + var NATIVE_JSON_PARSE_SUPPORT = window.JSON && + typeof JSON.parse === 'function' && + JSON.parse('{"test": true}').test; + + function prepareReplacement(replacement) { + if (Object.isFunction(replacement)) return replacement; + var template = new Template(replacement); + return function(match) { return template.evaluate(match) }; + } + + function gsub(pattern, replacement) { + var result = '', source = this, match; + replacement = prepareReplacement(replacement); + + if (Object.isString(pattern)) + pattern = RegExp.escape(pattern); + + if (!(pattern.length || pattern.source)) { + replacement = replacement(''); + return replacement + source.split('').join(replacement) + replacement; + } + + while (source.length > 0) { + if (match = source.match(pattern)) { + result += source.slice(0, match.index); + result += String.interpret(replacement(match)); + source = source.slice(match.index + match[0].length); + } else { + result += source, source = ''; + } + } + return result; + } + + function sub(pattern, replacement, count) { + replacement = prepareReplacement(replacement); + count = Object.isUndefined(count) ? 1 : count; + + return this.gsub(pattern, function(match) { + if (--count < 0) return match[0]; + return replacement(match); + }); + } + + function scan(pattern, iterator) { + this.gsub(pattern, iterator); + return String(this); + } + + function truncate(length, truncation) { + length = length || 30; + truncation = Object.isUndefined(truncation) ? '...' : truncation; + return this.length > length ? + this.slice(0, length - truncation.length) + truncation : String(this); + } + + function strip() { + return this.replace(/^\s+/, '').replace(/\s+$/, ''); + } + + function stripTags() { + return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, ''); + } + + function stripScripts() { + return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), ''); + } + + function extractScripts() { + var matchAll = new RegExp(Prototype.ScriptFragment, 'img'), + matchOne = new RegExp(Prototype.ScriptFragment, 'im'); + return (this.match(matchAll) || []).map(function(scriptTag) { + return (scriptTag.match(matchOne) || ['', ''])[1]; + }); + } + + function evalScripts() { + return this.extractScripts().map(function(script) { return eval(script) }); + } + + function escapeHTML() { + return this.replace(/&/g,'&').replace(//g,'>'); + } + + function unescapeHTML() { + return this.stripTags().replace(/</g,'<').replace(/>/g,'>').replace(/&/g,'&'); + } + + + function toQueryParams(separator) { + var match = this.strip().match(/([^?#]*)(#.*)?$/); + if (!match) return { }; + + return match[1].split(separator || '&').inject({ }, function(hash, pair) { + if ((pair = pair.split('='))[0]) { + var key = decodeURIComponent(pair.shift()), + value = pair.length > 1 ? pair.join('=') : pair[0]; + + if (value != undefined) value = decodeURIComponent(value); + + if (key in hash) { + if (!Object.isArray(hash[key])) hash[key] = [hash[key]]; + hash[key].push(value); + } + else hash[key] = value; + } + return hash; + }); + } + + function toArray() { + return this.split(''); + } + + function succ() { + return this.slice(0, this.length - 1) + + String.fromCharCode(this.charCodeAt(this.length - 1) + 1); + } + + function times(count) { + return count < 1 ? '' : new Array(count + 1).join(this); + } + + function camelize() { + return this.replace(/-+(.)?/g, function(match, chr) { + return chr ? chr.toUpperCase() : ''; + }); + } + + function capitalize() { + return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase(); + } + + function underscore() { + return this.replace(/::/g, '/') + .replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2') + .replace(/([a-z\d])([A-Z])/g, '$1_$2') + .replace(/-/g, '_') + .toLowerCase(); + } + + function dasherize() { + return this.replace(/_/g, '-'); + } + + function inspect(useDoubleQuotes) { + var escapedString = this.replace(/[\x00-\x1f\\]/g, function(character) { + if (character in String.specialChar) { + return String.specialChar[character]; + } + return '\\u00' + character.charCodeAt().toPaddedString(2, 16); + }); + if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"'; + return "'" + escapedString.replace(/'/g, '\\\'') + "'"; + } + + function unfilterJSON(filter) { + return this.replace(filter || Prototype.JSONFilter, '$1'); + } + + function isJSON() { + var str = this; + if (str.blank()) return false; + str = str.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@'); + str = str.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']'); + str = str.replace(/(?:^|:|,)(?:\s*\[)+/g, ''); + return (/^[\],:{}\s]*$/).test(str); + } + + function evalJSON(sanitize) { + var json = this.unfilterJSON(), + cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g; + if (cx.test(json)) { + json = json.replace(cx, function (a) { + return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); + }); + } + try { + if (!sanitize || json.isJSON()) return eval('(' + json + ')'); + } catch (e) { } + throw new SyntaxError('Badly formed JSON string: ' + this.inspect()); + } + + function parseJSON() { + var json = this.unfilterJSON(); + return JSON.parse(json); + } + + function include(pattern) { + return this.indexOf(pattern) > -1; + } + + function startsWith(pattern) { + return this.lastIndexOf(pattern, 0) === 0; + } + + function endsWith(pattern) { + var d = this.length - pattern.length; + return d >= 0 && this.indexOf(pattern, d) === d; + } + + function empty() { + return this == ''; + } + + function blank() { + return /^\s*$/.test(this); + } + + function interpolate(object, pattern) { + return new Template(this, pattern).evaluate(object); + } + + return { + gsub: gsub, + sub: sub, + scan: scan, + truncate: truncate, + strip: String.prototype.trim || strip, + stripTags: stripTags, + stripScripts: stripScripts, + extractScripts: extractScripts, + evalScripts: evalScripts, + escapeHTML: escapeHTML, + unescapeHTML: unescapeHTML, + toQueryParams: toQueryParams, + parseQuery: toQueryParams, + toArray: toArray, + succ: succ, + times: times, + camelize: camelize, + capitalize: capitalize, + underscore: underscore, + dasherize: dasherize, + inspect: inspect, + unfilterJSON: unfilterJSON, + isJSON: isJSON, + evalJSON: NATIVE_JSON_PARSE_SUPPORT ? parseJSON : evalJSON, + include: include, + startsWith: startsWith, + endsWith: endsWith, + empty: empty, + blank: blank, + interpolate: interpolate + }; +})()); + +var Template = Class.create({ + initialize: function(template, pattern) { + this.template = template.toString(); + this.pattern = pattern || Template.Pattern; + }, + + evaluate: function(object) { + if (object && Object.isFunction(object.toTemplateReplacements)) + object = object.toTemplateReplacements(); + + return this.template.gsub(this.pattern, function(match) { + if (object == null) return (match[1] + ''); + + var before = match[1] || ''; + if (before == '\\') return match[2]; + + var ctx = object, expr = match[3], + pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/; + + match = pattern.exec(expr); + if (match == null) return before; + + while (match != null) { + var comp = match[1].startsWith('[') ? match[2].replace(/\\\\]/g, ']') : match[1]; + ctx = ctx[comp]; + if (null == ctx || '' == match[3]) break; + expr = expr.substring('[' == match[3] ? match[1].length : match[0].length); + match = pattern.exec(expr); + } + + return before + String.interpret(ctx); + }); + } +}); +Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/; + +var $break = { }; + +var Enumerable = (function() { + function each(iterator, context) { + var index = 0; + try { + this._each(function(value) { + iterator.call(context, value, index++); + }); + } catch (e) { + if (e != $break) throw e; + } + return this; + } + + function eachSlice(number, iterator, context) { + var index = -number, slices = [], array = this.toArray(); + if (number < 1) return array; + while ((index += number) < array.length) + slices.push(array.slice(index, index+number)); + return slices.collect(iterator, context); + } + + function all(iterator, context) { + iterator = iterator || Prototype.K; + var result = true; + this.each(function(value, index) { + result = result && !!iterator.call(context, value, index); + if (!result) throw $break; + }); + return result; + } + + function any(iterator, context) { + iterator = iterator || Prototype.K; + var result = false; + this.each(function(value, index) { + if (result = !!iterator.call(context, value, index)) + throw $break; + }); + return result; + } + + function collect(iterator, context) { + iterator = iterator || Prototype.K; + var results = []; + this.each(function(value, index) { + results.push(iterator.call(context, value, index)); + }); + return results; + } + + function detect(iterator, context) { + var result; + this.each(function(value, index) { + if (iterator.call(context, value, index)) { + result = value; + throw $break; + } + }); + return result; + } + + function findAll(iterator, context) { + var results = []; + this.each(function(value, index) { + if (iterator.call(context, value, index)) + results.push(value); + }); + return results; + } + + function grep(filter, iterator, context) { + iterator = iterator || Prototype.K; + var results = []; + + if (Object.isString(filter)) + filter = new RegExp(RegExp.escape(filter)); + + this.each(function(value, index) { + if (filter.match(value)) + results.push(iterator.call(context, value, index)); + }); + return results; + } + + function include(object) { + if (Object.isFunction(this.indexOf)) + if (this.indexOf(object) != -1) return true; + + var found = false; + this.each(function(value) { + if (value == object) { + found = true; + throw $break; + } + }); + return found; + } + + function inGroupsOf(number, fillWith) { + fillWith = Object.isUndefined(fillWith) ? null : fillWith; + return this.eachSlice(number, function(slice) { + while(slice.length < number) slice.push(fillWith); + return slice; + }); + } + + function inject(memo, iterator, context) { + this.each(function(value, index) { + memo = iterator.call(context, memo, value, index); + }); + return memo; + } + + function invoke(method) { + var args = $A(arguments).slice(1); + return this.map(function(value) { + return value[method].apply(value, args); + }); + } + + function max(iterator, context) { + iterator = iterator || Prototype.K; + var result; + this.each(function(value, index) { + value = iterator.call(context, value, index); + if (result == null || value >= result) + result = value; + }); + return result; + } + + function min(iterator, context) { + iterator = iterator || Prototype.K; + var result; + this.each(function(value, index) { + value = iterator.call(context, value, index); + if (result == null || value < result) + result = value; + }); + return result; + } + + function partition(iterator, context) { + iterator = iterator || Prototype.K; + var trues = [], falses = []; + this.each(function(value, index) { + (iterator.call(context, value, index) ? + trues : falses).push(value); + }); + return [trues, falses]; + } + + function pluck(property) { + var results = []; + this.each(function(value) { + results.push(value[property]); + }); + return results; + } + + function reject(iterator, context) { + var results = []; + this.each(function(value, index) { + if (!iterator.call(context, value, index)) + results.push(value); + }); + return results; + } + + function sortBy(iterator, context) { + return this.map(function(value, index) { + return { + value: value, + criteria: iterator.call(context, value, index) + }; + }).sort(function(left, right) { + var a = left.criteria, b = right.criteria; + return a < b ? -1 : a > b ? 1 : 0; + }).pluck('value'); + } + + function toArray() { + return this.map(); + } + + function zip() { + var iterator = Prototype.K, args = $A(arguments); + if (Object.isFunction(args.last())) + iterator = args.pop(); + + var collections = [this].concat(args).map($A); + return this.map(function(value, index) { + return iterator(collections.pluck(index)); + }); + } + + function size() { + return this.toArray().length; + } + + function inspect() { + return '#'; + } + + + + + + + + + + return { + each: each, + eachSlice: eachSlice, + all: all, + every: all, + any: any, + some: any, + collect: collect, + map: collect, + detect: detect, + findAll: findAll, + select: findAll, + filter: findAll, + grep: grep, + include: include, + member: include, + inGroupsOf: inGroupsOf, + inject: inject, + invoke: invoke, + max: max, + min: min, + partition: partition, + pluck: pluck, + reject: reject, + sortBy: sortBy, + toArray: toArray, + entries: toArray, + zip: zip, + size: size, + inspect: inspect, + find: detect + }; +})(); + +function $A(iterable) { + if (!iterable) return []; + if ('toArray' in Object(iterable)) return iterable.toArray(); + var length = iterable.length || 0, results = new Array(length); + while (length--) results[length] = iterable[length]; + return results; +} + + +function $w(string) { + if (!Object.isString(string)) return []; + string = string.strip(); + return string ? string.split(/\s+/) : []; +} + +Array.from = $A; + + +(function() { + var arrayProto = Array.prototype, + slice = arrayProto.slice, + _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available + + function each(iterator, context) { + for (var i = 0, length = this.length >>> 0; i < length; i++) { + if (i in this) iterator.call(context, this[i], i, this); + } + } + if (!_each) _each = each; + + function clear() { + this.length = 0; + return this; + } + + function first() { + return this[0]; + } + + function last() { + return this[this.length - 1]; + } + + function compact() { + return this.select(function(value) { + return value != null; + }); + } + + function flatten() { + return this.inject([], function(array, value) { + if (Object.isArray(value)) + return array.concat(value.flatten()); + array.push(value); + return array; + }); + } + + function without() { + var values = slice.call(arguments, 0); + return this.select(function(value) { + return !values.include(value); + }); + } + + function reverse(inline) { + return (inline === false ? this.toArray() : this)._reverse(); + } + + function uniq(sorted) { + return this.inject([], function(array, value, index) { + if (0 == index || (sorted ? array.last() != value : !array.include(value))) + array.push(value); + return array; + }); + } + + function intersect(array) { + return this.uniq().findAll(function(item) { + return array.detect(function(value) { return item === value }); + }); + } + + + function clone() { + return slice.call(this, 0); + } + + function size() { + return this.length; + } + + function inspect() { + return '[' + this.map(Object.inspect).join(', ') + ']'; + } + + function indexOf(item, i) { + i || (i = 0); + var length = this.length; + if (i < 0) i = length + i; + for (; i < length; i++) + if (this[i] === item) return i; + return -1; + } + + function lastIndexOf(item, i) { + i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1; + var n = this.slice(0, i).reverse().indexOf(item); + return (n < 0) ? n : i - n - 1; + } + + function concat() { + var array = slice.call(this, 0), item; + for (var i = 0, length = arguments.length; i < length; i++) { + item = arguments[i]; + if (Object.isArray(item) && !('callee' in item)) { + for (var j = 0, arrayLength = item.length; j < arrayLength; j++) + array.push(item[j]); + } else { + array.push(item); + } + } + return array; + } + + Object.extend(arrayProto, Enumerable); + + if (!arrayProto._reverse) + arrayProto._reverse = arrayProto.reverse; + + Object.extend(arrayProto, { + _each: _each, + clear: clear, + first: first, + last: last, + compact: compact, + flatten: flatten, + without: without, + reverse: reverse, + uniq: uniq, + intersect: intersect, + clone: clone, + toArray: clone, + size: size, + inspect: inspect + }); + + var CONCAT_ARGUMENTS_BUGGY = (function() { + return [].concat(arguments)[0][0] !== 1; + })(1,2) + + if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat; + + if (!arrayProto.indexOf) arrayProto.indexOf = indexOf; + if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf; +})(); +function $H(object) { + return new Hash(object); +}; + +var Hash = Class.create(Enumerable, (function() { + function initialize(object) { + this._object = Object.isHash(object) ? object.toObject() : Object.clone(object); + } + + + function _each(iterator) { + for (var key in this._object) { + var value = this._object[key], pair = [key, value]; + pair.key = key; + pair.value = value; + iterator(pair); + } + } + + function set(key, value) { + return this._object[key] = value; + } + + function get(key) { + if (this._object[key] !== Object.prototype[key]) + return this._object[key]; + } + + function unset(key) { + var value = this._object[key]; + delete this._object[key]; + return value; + } + + function toObject() { + return Object.clone(this._object); + } + + + + function keys() { + return this.pluck('key'); + } + + function values() { + return this.pluck('value'); + } + + function index(value) { + var match = this.detect(function(pair) { + return pair.value === value; + }); + return match && match.key; + } + + function merge(object) { + return this.clone().update(object); + } + + function update(object) { + return new Hash(object).inject(this, function(result, pair) { + result.set(pair.key, pair.value); + return result; + }); + } + + function toQueryPair(key, value) { + if (Object.isUndefined(value)) return key; + return key + '=' + encodeURIComponent(String.interpret(value)); + } + + function toQueryString() { + return this.inject([], function(results, pair) { + var key = encodeURIComponent(pair.key), values = pair.value; + + if (values && typeof values == 'object') { + if (Object.isArray(values)) { + var queryValues = []; + for (var i = 0, len = values.length, value; i < len; i++) { + value = values[i]; + queryValues.push(toQueryPair(key, value)); + } + return results.concat(queryValues); + } + } else results.push(toQueryPair(key, values)); + return results; + }).join('&'); + } + + function inspect() { + return '#'; + } + + function clone() { + return new Hash(this); + } + + return { + initialize: initialize, + _each: _each, + set: set, + get: get, + unset: unset, + toObject: toObject, + toTemplateReplacements: toObject, + keys: keys, + values: values, + index: index, + merge: merge, + update: update, + toQueryString: toQueryString, + inspect: inspect, + toJSON: toObject, + clone: clone + }; +})()); + +Hash.from = $H; +Object.extend(Number.prototype, (function() { + function toColorPart() { + return this.toPaddedString(2, 16); + } + + function succ() { + return this + 1; + } + + function times(iterator, context) { + $R(0, this, true).each(iterator, context); + return this; + } + + function toPaddedString(length, radix) { + var string = this.toString(radix || 10); + return '0'.times(length - string.length) + string; + } + + function abs() { + return Math.abs(this); + } + + function round() { + return Math.round(this); + } + + function ceil() { + return Math.ceil(this); + } + + function floor() { + return Math.floor(this); + } + + return { + toColorPart: toColorPart, + succ: succ, + times: times, + toPaddedString: toPaddedString, + abs: abs, + round: round, + ceil: ceil, + floor: floor + }; +})()); + +function $R(start, end, exclusive) { + return new ObjectRange(start, end, exclusive); +} + +var ObjectRange = Class.create(Enumerable, (function() { + function initialize(start, end, exclusive) { + this.start = start; + this.end = end; + this.exclusive = exclusive; + } + + function _each(iterator) { + var value = this.start; + while (this.include(value)) { + iterator(value); + value = value.succ(); + } + } + + function include(value) { + if (value < this.start) + return false; + if (this.exclusive) + return value < this.end; + return value <= this.end; + } + + return { + initialize: initialize, + _each: _each, + include: include + }; +})()); + + + +var Ajax = { + getTransport: function() { + return Try.these( + function() {return new XMLHttpRequest()}, + function() {return new ActiveXObject('Msxml2.XMLHTTP')}, + function() {return new ActiveXObject('Microsoft.XMLHTTP')} + ) || false; + }, + + activeRequestCount: 0 +}; + +Ajax.Responders = { + responders: [], + + _each: function(iterator) { + this.responders._each(iterator); + }, + + register: function(responder) { + if (!this.include(responder)) + this.responders.push(responder); + }, + + unregister: function(responder) { + this.responders = this.responders.without(responder); + }, + + dispatch: function(callback, request, transport, json) { + this.each(function(responder) { + if (Object.isFunction(responder[callback])) { + try { + responder[callback].apply(responder, [request, transport, json]); + } catch (e) { } + } + }); + } +}; + +Object.extend(Ajax.Responders, Enumerable); + +Ajax.Responders.register({ + onCreate: function() { Ajax.activeRequestCount++ }, + onComplete: function() { Ajax.activeRequestCount-- } +}); +Ajax.Base = Class.create({ + initialize: function(options) { + this.options = { + method: 'post', + asynchronous: true, + contentType: 'application/x-www-form-urlencoded', + encoding: 'UTF-8', + parameters: '', + evalJSON: true, + evalJS: true + }; + Object.extend(this.options, options || { }); + + this.options.method = this.options.method.toLowerCase(); + + if (Object.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.isString(this.options.parameters) ? + this.options.parameters : + Object.toQueryString(this.options.parameters); + + if (!['get', 'post'].include(this.method)) { + params += (params ? '&' : '') + "_method=" + this.method; + this.method = 'post'; + } + + if (params && this.method === 'get') { + this.url += (this.url.include('?') ? '&' : '?') + params; + } + + this.parameters = params.toQueryParams(); + + try { + var response = new Ajax.Response(this); + if (this.options.onCreate) this.options.onCreate(response); + Ajax.Responders.dispatch('onCreate', this, response); + + this.transport.open(this.method.toUpperCase(), this.url, + this.options.asynchronous); + + if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1); + + this.transport.onreadystatechange = this.onStateChange.bind(this); + this.setRequestHeaders(); + + this.body = this.method == 'post' ? (this.options.postBody || params) : null; + this.transport.send(this.body); + + /* Force Firefox to handle ready state 4 for synchronous requests */ + if (!this.options.asynchronous && this.transport.overrideMimeType) + this.onStateChange(); + + } + catch (e) { + this.dispatchException(e); + } + }, + + onStateChange: function() { + var readyState = this.transport.readyState; + if (readyState > 1 && !((readyState == 4) && this._complete)) + this.respondToReadyState(this.transport.readyState); + }, + + setRequestHeaders: function() { + var headers = { + 'X-Requested-With': 'XMLHttpRequest', + 'X-Prototype-Version': Prototype.Version, + 'Accept': 'text/javascript, text/html, application/xml, text/xml, */*' + }; + + if (this.method == 'post') { + headers['Content-type'] = this.options.contentType + + (this.options.encoding ? '; charset=' + this.options.encoding : ''); + + /* Force "Connection: close" for older Mozilla browsers to work + * around a bug where XMLHttpRequest sends an incorrect + * Content-length header. See Mozilla Bugzilla #246651. + */ + if (this.transport.overrideMimeType && + (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005) + headers['Connection'] = 'close'; + } + + if (typeof this.options.requestHeaders == 'object') { + var extras = this.options.requestHeaders; + + if (Object.isFunction(extras.push)) + for (var i = 0, length = extras.length; i < length; i += 2) + headers[extras[i]] = extras[i+1]; + else + $H(extras).each(function(pair) { headers[pair.key] = pair.value }); + } + + for (var name in headers) + this.transport.setRequestHeader(name, headers[name]); + }, + + success: function() { + var status = this.getStatus(); + return !status || (status >= 200 && status < 300) || status == 304; + }, + + getStatus: function() { + try { + if (this.transport.status === 1223) return 204; + return this.transport.status || 0; + } catch (e) { return 0 } + }, + + respondToReadyState: function(readyState) { + var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this); + + if (state == 'Complete') { + try { + this._complete = true; + (this.options['on' + response.status] + || this.options['on' + (this.success() ? 'Success' : 'Failure')] + || Prototype.emptyFunction)(response, response.headerJSON); + } catch (e) { + this.dispatchException(e); + } + + var contentType = response.getHeader('Content-type'); + if (this.options.evalJS == 'force' + || (this.options.evalJS && this.isSameOrigin() && contentType + && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i))) + this.evalResponse(); + } + + try { + (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON); + Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON); + } catch (e) { + this.dispatchException(e); + } + + if (state == 'Complete') { + this.transport.onreadystatechange = Prototype.emptyFunction; + } + }, + + isSameOrigin: function() { + var m = this.url.match(/^\s*https?:\/\/[^\/]*/); + return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({ + protocol: location.protocol, + domain: document.domain, + port: location.port ? ':' + location.port : '' + })); + }, + + getHeader: function(name) { + try { + return this.transport.getResponseHeader(name) || null; + } catch (e) { return null; } + }, + + evalResponse: function() { + try { + return eval((this.transport.responseText || '').unfilterJSON()); + } catch (e) { + this.dispatchException(e); + } + }, + + dispatchException: function(exception) { + (this.options.onException || Prototype.emptyFunction)(this, exception); + Ajax.Responders.dispatch('onException', this, exception); + } +}); + +Ajax.Request.Events = + ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete']; + + + + + + + + +Ajax.Response = Class.create({ + initialize: function(request){ + this.request = request; + var transport = this.transport = request.transport, + readyState = this.readyState = transport.readyState; + + if ((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) { + this.status = this.getStatus(); + this.statusText = this.getStatusText(); + this.responseText = String.interpret(transport.responseText); + this.headerJSON = this._getHeaderJSON(); + } + + if (readyState == 4) { + var xml = transport.responseXML; + this.responseXML = Object.isUndefined(xml) ? null : xml; + this.responseJSON = this._getResponseJSON(); + } + }, + + status: 0, + + statusText: '', + + getStatus: Ajax.Request.prototype.getStatus, + + getStatusText: function() { + try { + return this.transport.statusText || ''; + } catch (e) { return '' } + }, + + getHeader: Ajax.Request.prototype.getHeader, + + getAllHeaders: function() { + try { + return this.getAllResponseHeaders(); + } catch (e) { return null } + }, + + getResponseHeader: function(name) { + return this.transport.getResponseHeader(name); + }, + + getAllResponseHeaders: function() { + return this.transport.getAllResponseHeaders(); + }, + + _getHeaderJSON: function() { + var json = this.getHeader('X-JSON'); + if (!json) return null; + json = decodeURIComponent(escape(json)); + try { + return json.evalJSON(this.request.options.sanitizeJSON || + !this.request.isSameOrigin()); + } catch (e) { + this.request.dispatchException(e); + } + }, + + _getResponseJSON: function() { + var options = this.request.options; + if (!options.evalJSON || (options.evalJSON != 'force' && + !(this.getHeader('Content-type') || '').include('application/json')) || + this.responseText.blank()) + return null; + try { + return this.responseText.evalJSON(options.sanitizeJSON || + !this.request.isSameOrigin()); + } catch (e) { + this.request.dispatchException(e); + } + } +}); + +Ajax.Updater = Class.create(Ajax.Request, { + initialize: function($super, container, url, options) { + this.container = { + success: (container.success || container), + failure: (container.failure || (container.success ? null : container)) + }; + + options = Object.clone(options); + var onComplete = options.onComplete; + options.onComplete = (function(response, json) { + this.updateContent(response.responseText); + if (Object.isFunction(onComplete)) onComplete(response, json); + }).bind(this); + + $super(url, options); + }, + + updateContent: function(responseText) { + var receiver = this.container[this.success() ? 'success' : 'failure'], + options = this.options; + + if (!options.evalScripts) responseText = responseText.stripScripts(); + + if (receiver = $(receiver)) { + if (options.insertion) { + if (Object.isString(options.insertion)) { + var insertion = { }; insertion[options.insertion] = responseText; + receiver.insert(insertion); + } + else options.insertion(receiver, responseText); + } + else receiver.update(responseText); + } + } +}); + +Ajax.PeriodicalUpdater = Class.create(Ajax.Base, { + initialize: function($super, container, url, options) { + $super(options); + this.onComplete = this.options.onComplete; + + this.frequency = (this.options.frequency || 2); + this.decay = (this.options.decay || 1); + + this.updater = { }; + this.container = container; + this.url = url; + + this.start(); + }, + + start: function() { + this.options.onComplete = this.updateComplete.bind(this); + this.onTimerEvent(); + }, + + stop: function() { + this.updater.options.onComplete = undefined; + clearTimeout(this.timer); + (this.onComplete || Prototype.emptyFunction).apply(this, arguments); + }, + + updateComplete: function(response) { + if (this.options.decay) { + this.decay = (response.responseText == this.lastText ? + this.decay * this.options.decay : 1); + + this.lastText = response.responseText; + } + this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency); + }, + + onTimerEvent: function() { + this.updater = new Ajax.Updater(this.container, this.url, this.options); + } +}); + + +function $(element) { + if (arguments.length > 1) { + for (var i = 0, elements = [], length = arguments.length; i < length; i++) + elements.push($(arguments[i])); + return elements; + } + if (Object.isString(element)) + element = document.getElementById(element); + return Element.extend(element); +} + +if (Prototype.BrowserFeatures.XPath) { + document._getElementsByXPath = function(expression, parentElement) { + var results = []; + var query = document.evaluate(expression, $(parentElement) || document, + null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null); + for (var i = 0, length = query.snapshotLength; i < length; i++) + results.push(Element.extend(query.snapshotItem(i))); + return results; + }; +} + +/*--------------------------------------------------------------------------*/ + +if (!Node) var Node = { }; + +if (!Node.ELEMENT_NODE) { + Object.extend(Node, { + ELEMENT_NODE: 1, + ATTRIBUTE_NODE: 2, + TEXT_NODE: 3, + CDATA_SECTION_NODE: 4, + ENTITY_REFERENCE_NODE: 5, + ENTITY_NODE: 6, + PROCESSING_INSTRUCTION_NODE: 7, + COMMENT_NODE: 8, + DOCUMENT_NODE: 9, + DOCUMENT_TYPE_NODE: 10, + DOCUMENT_FRAGMENT_NODE: 11, + NOTATION_NODE: 12 + }); +} + + + +(function(global) { + function shouldUseCache(tagName, attributes) { + if (tagName === 'select') return false; + if ('type' in attributes) return false; + return true; + } + + var HAS_EXTENDED_CREATE_ELEMENT_SYNTAX = (function(){ + try { + var el = document.createElement(''); + return el.tagName.toLowerCase() === 'input' && el.name === 'x'; + } + catch(err) { + return false; + } + })(); + + var element = global.Element; + + global.Element = function(tagName, attributes) { + attributes = attributes || { }; + tagName = tagName.toLowerCase(); + var cache = Element.cache; + + if (HAS_EXTENDED_CREATE_ELEMENT_SYNTAX && 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)); + + var node = shouldUseCache(tagName, attributes) ? + cache[tagName].cloneNode(false) : document.createElement(tagName); + + return Element.writeAttribute(node, attributes); + }; + + Object.extend(global.Element, element || { }); + if (element) global.Element.prototype = element.prototype; + +})(this); + +Element.idCounter = 1; +Element.cache = { }; + +Element._purgeElement = function(element) { + var uid = element._prototypeUID; + if (uid) { + Element.stopObserving(element); + element._prototypeUID = void 0; + delete Element.Storage[uid]; + } +} + +Element.Methods = { + visible: function(element) { + return $(element).style.display != 'none'; + }, + + toggle: function(element) { + element = $(element); + Element[Element.visible(element) ? 'hide' : 'show'](element); + return element; + }, + + hide: function(element) { + element = $(element); + element.style.display = 'none'; + return element; + }, + + show: function(element) { + element = $(element); + element.style.display = ''; + return element; + }, + + remove: function(element) { + element = $(element); + element.parentNode.removeChild(element); + return element; + }, + + update: (function(){ + + var SELECT_ELEMENT_INNERHTML_BUGGY = (function(){ + var el = document.createElement("select"), + isBuggy = true; + el.innerHTML = ""; + if (el.options && el.options[0]) { + isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION"; + } + el = null; + return isBuggy; + })(); + + var TABLE_ELEMENT_INNERHTML_BUGGY = (function(){ + try { + var el = document.createElement("table"); + if (el && el.tBodies) { + el.innerHTML = "test"; + var isBuggy = typeof el.tBodies[0] == "undefined"; + el = null; + return isBuggy; + } + } catch (e) { + return true; + } + })(); + + var LINK_ELEMENT_INNERHTML_BUGGY = (function() { + try { + var el = document.createElement('div'); + el.innerHTML = ""; + var isBuggy = (el.childNodes.length === 0); + el = null; + return isBuggy; + } catch(e) { + return true; + } + })(); + + var ANY_INNERHTML_BUGGY = SELECT_ELEMENT_INNERHTML_BUGGY || + TABLE_ELEMENT_INNERHTML_BUGGY || LINK_ELEMENT_INNERHTML_BUGGY; + + var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function () { + var s = document.createElement("script"), + isBuggy = false; + try { + s.appendChild(document.createTextNode("")); + isBuggy = !s.firstChild || + s.firstChild && s.firstChild.nodeType !== 3; + } catch (e) { + isBuggy = true; + } + s = null; + return isBuggy; + })(); + + + function update(element, content) { + element = $(element); + var purgeElement = Element._purgeElement; + + var descendants = element.getElementsByTagName('*'), + i = descendants.length; + while (i--) purgeElement(descendants[i]); + + if (content && content.toElement) + content = content.toElement(); + + if (Object.isElement(content)) + return element.update().insert(content); + + content = Object.toHTML(content); + + var tagName = element.tagName.toUpperCase(); + + if (tagName === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) { + element.text = content; + return element; + } + + if (ANY_INNERHTML_BUGGY) { + if (tagName in Element._insertionTranslations.tags) { + while (element.firstChild) { + element.removeChild(element.firstChild); + } + Element._getContentFromAnonymousElement(tagName, content.stripScripts()) + .each(function(node) { + element.appendChild(node) + }); + } else if (LINK_ELEMENT_INNERHTML_BUGGY && Object.isString(content) && content.indexOf(' -1) { + while (element.firstChild) { + element.removeChild(element.firstChild); + } + var nodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts(), true); + nodes.each(function(node) { element.appendChild(node) }); + } + else { + element.innerHTML = content.stripScripts(); + } + } + else { + element.innerHTML = content.stripScripts(); + } + + content.evalScripts.bind(content).defer(); + return element; + } + + return update; + })(), + + replace: function(element, content) { + element = $(element); + if (content && content.toElement) content = content.toElement(); + else if (!Object.isElement(content)) { + content = Object.toHTML(content); + var range = element.ownerDocument.createRange(); + range.selectNode(element); + content.evalScripts.bind(content).defer(); + content = range.createContextualFragment(content.stripScripts()); + } + element.parentNode.replaceChild(content, element); + return element; + }, + + insert: function(element, insertions) { + element = $(element); + + if (Object.isString(insertions) || Object.isNumber(insertions) || + Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML))) + insertions = {bottom:insertions}; + + var content, insert, tagName, childNodes; + + for (var position in insertions) { + content = insertions[position]; + position = position.toLowerCase(); + insert = Element._insertionTranslations[position]; + + if (content && content.toElement) content = content.toElement(); + if (Object.isElement(content)) { + insert(element, content); + continue; + } + + content = Object.toHTML(content); + + tagName = ((position == 'before' || position == 'after') + ? element.parentNode : element).tagName.toUpperCase(); + + childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts()); + + if (position == 'top' || position == 'after') childNodes.reverse(); + childNodes.each(insert.curry(element)); + + content.evalScripts.bind(content).defer(); + } + + return element; + }, + + wrap: function(element, wrapper, attributes) { + element = $(element); + if (Object.isElement(wrapper)) + $(wrapper).writeAttribute(attributes || { }); + else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes); + else wrapper = new Element('div', wrapper); + if (element.parentNode) + element.parentNode.replaceChild(wrapper, element); + wrapper.appendChild(element); + return wrapper; + }, + + inspect: function(element) { + element = $(element); + var result = '<' + element.tagName.toLowerCase(); + $H({'id': 'id', 'className': 'class'}).each(function(pair) { + var property = pair.first(), + attribute = pair.last(), + value = (element[property] || '').toString(); + if (value) result += ' ' + attribute + '=' + value.inspect(true); + }); + return result + '>'; + }, + + recursivelyCollect: function(element, property, maximumLength) { + element = $(element); + maximumLength = maximumLength || -1; + var elements = []; + + while (element = element[property]) { + if (element.nodeType == 1) + elements.push(Element.extend(element)); + if (elements.length == maximumLength) + break; + } + + return elements; + }, + + ancestors: function(element) { + return Element.recursivelyCollect(element, 'parentNode'); + }, + + descendants: function(element) { + return Element.select(element, "*"); + }, + + firstDescendant: function(element) { + element = $(element).firstChild; + while (element && element.nodeType != 1) element = element.nextSibling; + return $(element); + }, + + immediateDescendants: function(element) { + var results = [], child = $(element).firstChild; + while (child) { + if (child.nodeType === 1) { + results.push(Element.extend(child)); + } + child = child.nextSibling; + } + return results; + }, + + previousSiblings: function(element, maximumLength) { + return Element.recursivelyCollect(element, 'previousSibling'); + }, + + nextSiblings: function(element) { + return Element.recursivelyCollect(element, 'nextSibling'); + }, + + siblings: function(element) { + element = $(element); + return Element.previousSiblings(element).reverse() + .concat(Element.nextSiblings(element)); + }, + + match: function(element, selector) { + element = $(element); + if (Object.isString(selector)) + return Prototype.Selector.match(element, selector); + return selector.match(element); + }, + + up: function(element, expression, index) { + element = $(element); + if (arguments.length == 1) return $(element.parentNode); + var ancestors = Element.ancestors(element); + return Object.isNumber(expression) ? ancestors[expression] : + Prototype.Selector.find(ancestors, expression, index); + }, + + down: function(element, expression, index) { + element = $(element); + if (arguments.length == 1) return Element.firstDescendant(element); + return Object.isNumber(expression) ? Element.descendants(element)[expression] : + Element.select(element, expression)[index || 0]; + }, + + previous: function(element, expression, index) { + element = $(element); + if (Object.isNumber(expression)) index = expression, expression = false; + if (!Object.isNumber(index)) index = 0; + + if (expression) { + return Prototype.Selector.find(element.previousSiblings(), expression, index); + } else { + return element.recursivelyCollect("previousSibling", index + 1)[index]; + } + }, + + next: function(element, expression, index) { + element = $(element); + if (Object.isNumber(expression)) index = expression, expression = false; + if (!Object.isNumber(index)) index = 0; + + if (expression) { + return Prototype.Selector.find(element.nextSiblings(), expression, index); + } else { + var maximumLength = Object.isNumber(index) ? index + 1 : 1; + return element.recursivelyCollect("nextSibling", index + 1)[index]; + } + }, + + + select: function(element) { + element = $(element); + var expressions = Array.prototype.slice.call(arguments, 1).join(', '); + return Prototype.Selector.select(expressions, element); + }, + + adjacent: function(element) { + element = $(element); + var expressions = Array.prototype.slice.call(arguments, 1).join(', '); + return Prototype.Selector.select(expressions, element.parentNode).without(element); + }, + + identify: function(element) { + element = $(element); + var id = Element.readAttribute(element, 'id'); + if (id) return id; + do { id = 'anonymous_element_' + Element.idCounter++ } while ($(id)); + Element.writeAttribute(element, 'id', id); + return id; + }, + + readAttribute: function(element, name) { + element = $(element); + if (Prototype.Browser.IE) { + var t = Element._attributeTranslations.read; + if (t.values[name]) return t.values[name](element, name); + if (t.names[name]) name = t.names[name]; + if (name.include(':')) { + return (!element.attributes || !element.attributes[name]) ? null : + element.attributes[name].value; + } + } + return element.getAttribute(name); + }, + + writeAttribute: function(element, name, value) { + element = $(element); + var attributes = { }, t = Element._attributeTranslations.write; + + if (typeof name == 'object') attributes = name; + else attributes[name] = Object.isUndefined(value) ? true : value; + + for (var attr in attributes) { + name = t.names[attr] || attr; + value = attributes[attr]; + if (t.values[attr]) name = t.values[attr](element, value); + if (value === false || value === null) + element.removeAttribute(name); + else if (value === true) + element.setAttribute(name, name); + else element.setAttribute(name, value); + } + return element; + }, + + getHeight: function(element) { + return Element.getDimensions(element).height; + }, + + getWidth: function(element) { + return Element.getDimensions(element).width; + }, + + classNames: function(element) { + return new Element.ClassNames(element); + }, + + hasClassName: function(element, className) { + if (!(element = $(element))) return; + var elementClassName = element.className; + return (elementClassName.length > 0 && (elementClassName == className || + new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName))); + }, + + addClassName: function(element, className) { + if (!(element = $(element))) return; + if (!Element.hasClassName(element, className)) + element.className += (element.className ? ' ' : '') + className; + return element; + }, + + removeClassName: function(element, className) { + if (!(element = $(element))) return; + element.className = element.className.replace( + new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip(); + return element; + }, + + toggleClassName: function(element, className) { + if (!(element = $(element))) return; + return Element[Element.hasClassName(element, className) ? + 'removeClassName' : 'addClassName'](element, className); + }, + + cleanWhitespace: function(element) { + element = $(element); + var node = element.firstChild; + while (node) { + var nextNode = node.nextSibling; + if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) + element.removeChild(node); + node = nextNode; + } + return element; + }, + + empty: function(element) { + return $(element).innerHTML.blank(); + }, + + descendantOf: function(element, ancestor) { + element = $(element), ancestor = $(ancestor); + + if (element.compareDocumentPosition) + return (element.compareDocumentPosition(ancestor) & 8) === 8; + + if (ancestor.contains) + return ancestor.contains(element) && ancestor !== element; + + while (element = element.parentNode) + if (element == ancestor) return true; + + return false; + }, + + scrollTo: function(element) { + element = $(element); + var pos = Element.cumulativeOffset(element); + window.scrollTo(pos[0], pos[1]); + return element; + }, + + getStyle: function(element, style) { + element = $(element); + style = style == 'float' ? 'cssFloat' : style.camelize(); + var value = element.style[style]; + if (!value || value == 'auto') { + var css = document.defaultView.getComputedStyle(element, null); + value = css ? css[style] : null; + } + if (style == 'opacity') return value ? parseFloat(value) : 1.0; + return value == 'auto' ? null : value; + }, + + getOpacity: function(element) { + return $(element).getStyle('opacity'); + }, + + setStyle: function(element, styles) { + element = $(element); + var elementStyle = element.style, match; + if (Object.isString(styles)) { + element.style.cssText += ';' + styles; + return styles.include('opacity') ? + element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element; + } + for (var property in styles) + if (property == 'opacity') element.setOpacity(styles[property]); + else + elementStyle[(property == 'float' || property == 'cssFloat') ? + (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') : + property] = styles[property]; + + return element; + }, + + setOpacity: function(element, value) { + element = $(element); + element.style.opacity = (value == 1 || value === '') ? '' : + (value < 0.00001) ? 0 : value; + return element; + }, + + makePositioned: function(element) { + element = $(element); + var pos = Element.getStyle(element, 'position'); + if (pos == 'static' || !pos) { + element._madePositioned = true; + element.style.position = 'relative'; + if (Prototype.Browser.Opera) { + element.style.top = 0; + element.style.left = 0; + } + } + return element; + }, + + undoPositioned: function(element) { + element = $(element); + if (element._madePositioned) { + element._madePositioned = undefined; + element.style.position = + element.style.top = + element.style.left = + element.style.bottom = + element.style.right = ''; + } + return element; + }, + + makeClipping: function(element) { + element = $(element); + if (element._overflow) return element; + element._overflow = Element.getStyle(element, 'overflow') || 'auto'; + if (element._overflow !== 'hidden') + element.style.overflow = 'hidden'; + return element; + }, + + undoClipping: function(element) { + element = $(element); + if (!element._overflow) return element; + element.style.overflow = element._overflow == 'auto' ? '' : element._overflow; + element._overflow = null; + return element; + }, + + clonePosition: function(element, source) { + var options = Object.extend({ + setLeft: true, + setTop: true, + setWidth: true, + setHeight: true, + offsetTop: 0, + offsetLeft: 0 + }, arguments[2] || { }); + + source = $(source); + var p = Element.viewportOffset(source), delta = [0, 0], parent = null; + + element = $(element); + + if (Element.getStyle(element, 'position') == 'absolute') { + parent = Element.getOffsetParent(element); + delta = Element.viewportOffset(parent); + } + + if (parent == document.body) { + delta[0] -= document.body.offsetLeft; + delta[1] -= document.body.offsetTop; + } + + if (options.setLeft) element.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px'; + if (options.setTop) element.style.top = (p[1] - delta[1] + options.offsetTop) + 'px'; + if (options.setWidth) element.style.width = source.offsetWidth + 'px'; + if (options.setHeight) element.style.height = source.offsetHeight + 'px'; + return element; + } +}; + +Object.extend(Element.Methods, { + getElementsBySelector: Element.Methods.select, + + childElements: Element.Methods.immediateDescendants +}); + +Element._attributeTranslations = { + write: { + names: { + className: 'class', + htmlFor: 'for' + }, + values: { } + } +}; + +if (Prototype.Browser.Opera) { + Element.Methods.getStyle = Element.Methods.getStyle.wrap( + function(proceed, element, style) { + switch (style) { + case 'height': case 'width': + if (!Element.visible(element)) return null; + + var dim = parseInt(proceed(element, style), 10); + + if (dim !== element['offset' + style.capitalize()]) + return dim + 'px'; + + var properties; + if (style === 'height') { + properties = ['border-top-width', 'padding-top', + 'padding-bottom', 'border-bottom-width']; + } + else { + properties = ['border-left-width', 'padding-left', + 'padding-right', 'border-right-width']; + } + return properties.inject(dim, function(memo, property) { + var val = proceed(element, property); + return val === null ? memo : memo - parseInt(val, 10); + }) + 'px'; + default: return proceed(element, style); + } + } + ); + + Element.Methods.readAttribute = Element.Methods.readAttribute.wrap( + function(proceed, element, attribute) { + if (attribute === 'title') return element.title; + return proceed(element, attribute); + } + ); +} + +else if (Prototype.Browser.IE) { + Element.Methods.getStyle = function(element, style) { + element = $(element); + style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize(); + var value = element.style[style]; + if (!value && element.currentStyle) value = element.currentStyle[style]; + + if (style == 'opacity') { + if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/)) + if (value[1]) return parseFloat(value[1]) / 100; + return 1.0; + } + + if (value == 'auto') { + if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none')) + return element['offset' + style.capitalize()] + 'px'; + return null; + } + return value; + }; + + Element.Methods.setOpacity = function(element, value) { + function stripAlpha(filter){ + return filter.replace(/alpha\([^\)]*\)/gi,''); + } + element = $(element); + var currentStyle = element.currentStyle; + if ((currentStyle && !currentStyle.hasLayout) || + (!currentStyle && element.style.zoom == 'normal')) + element.style.zoom = 1; + + var filter = element.getStyle('filter'), style = element.style; + if (value == 1 || value === '') { + (filter = stripAlpha(filter)) ? + style.filter = filter : style.removeAttribute('filter'); + return element; + } else if (value < 0.00001) value = 0; + style.filter = stripAlpha(filter) + + 'alpha(opacity=' + (value * 100) + ')'; + return element; + }; + + Element._attributeTranslations = (function(){ + + var classProp = 'className', + forProp = 'for', + el = document.createElement('div'); + + el.setAttribute(classProp, 'x'); + + if (el.className !== 'x') { + el.setAttribute('class', 'x'); + if (el.className === 'x') { + classProp = 'class'; + } + } + el = null; + + el = document.createElement('label'); + el.setAttribute(forProp, 'x'); + if (el.htmlFor !== 'x') { + el.setAttribute('htmlFor', 'x'); + if (el.htmlFor === 'x') { + forProp = 'htmlFor'; + } + } + el = null; + + return { + read: { + names: { + 'class': classProp, + 'className': classProp, + 'for': forProp, + 'htmlFor': forProp + }, + values: { + _getAttr: function(element, attribute) { + return element.getAttribute(attribute); + }, + _getAttr2: function(element, attribute) { + return element.getAttribute(attribute, 2); + }, + _getAttrNode: function(element, attribute) { + var node = element.getAttributeNode(attribute); + return node ? node.value : ""; + }, + _getEv: (function(){ + + var el = document.createElement('div'), f; + el.onclick = Prototype.emptyFunction; + var value = el.getAttribute('onclick'); + + if (String(value).indexOf('{') > -1) { + f = function(element, attribute) { + attribute = element.getAttribute(attribute); + if (!attribute) return null; + attribute = attribute.toString(); + attribute = attribute.split('{')[1]; + attribute = attribute.split('}')[0]; + return attribute.strip(); + }; + } + else if (value === '') { + f = function(element, attribute) { + attribute = element.getAttribute(attribute); + if (!attribute) return null; + return attribute.strip(); + }; + } + el = null; + return f; + })(), + _flag: function(element, attribute) { + return $(element).hasAttribute(attribute) ? attribute : null; + }, + style: function(element) { + return element.style.cssText.toLowerCase(); + }, + title: function(element) { + return element.title; + } + } + } + } + })(); + + Element._attributeTranslations.write = { + names: Object.extend({ + cellpadding: 'cellPadding', + cellspacing: 'cellSpacing' + }, Element._attributeTranslations.read.names), + values: { + checked: function(element, value) { + element.checked = !!value; + }, + + style: function(element, value) { + element.style.cssText = value ? value : ''; + } + } + }; + + Element._attributeTranslations.has = {}; + + $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' + + 'encType maxLength readOnly longDesc frameBorder').each(function(attr) { + Element._attributeTranslations.write.names[attr.toLowerCase()] = attr; + Element._attributeTranslations.has[attr.toLowerCase()] = attr; + }); + + (function(v) { + Object.extend(v, { + href: v._getAttr2, + src: v._getAttr2, + type: v._getAttr, + action: v._getAttrNode, + disabled: v._flag, + checked: v._flag, + readonly: v._flag, + multiple: v._flag, + onload: v._getEv, + onunload: v._getEv, + onclick: v._getEv, + ondblclick: v._getEv, + onmousedown: v._getEv, + onmouseup: v._getEv, + onmouseover: v._getEv, + onmousemove: v._getEv, + onmouseout: v._getEv, + onfocus: v._getEv, + onblur: v._getEv, + onkeypress: v._getEv, + onkeydown: v._getEv, + onkeyup: v._getEv, + onsubmit: v._getEv, + onreset: v._getEv, + onselect: v._getEv, + onchange: v._getEv + }); + })(Element._attributeTranslations.read.values); + + if (Prototype.BrowserFeatures.ElementExtensions) { + (function() { + function _descendants(element) { + var nodes = element.getElementsByTagName('*'), results = []; + for (var i = 0, node; node = nodes[i]; i++) + if (node.tagName !== "!") // Filter out comment nodes. + results.push(node); + return results; + } + + Element.Methods.down = function(element, expression, index) { + element = $(element); + if (arguments.length == 1) return element.firstDescendant(); + return Object.isNumber(expression) ? _descendants(element)[expression] : + Element.select(element, expression)[index || 0]; + } + })(); + } + +} + +else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) { + Element.Methods.setOpacity = function(element, value) { + element = $(element); + element.style.opacity = (value == 1) ? 0.999999 : + (value === '') ? '' : (value < 0.00001) ? 0 : value; + return element; + }; +} + +else if (Prototype.Browser.WebKit) { + Element.Methods.setOpacity = function(element, value) { + element = $(element); + element.style.opacity = (value == 1 || value === '') ? '' : + (value < 0.00001) ? 0 : value; + + if (value == 1) + if (element.tagName.toUpperCase() == 'IMG' && element.width) { + element.width++; element.width--; + } else try { + var n = document.createTextNode(' '); + element.appendChild(n); + element.removeChild(n); + } catch (e) { } + + return element; + }; +} + +if ('outerHTML' in document.documentElement) { + Element.Methods.replace = function(element, content) { + element = $(element); + + if (content && content.toElement) content = content.toElement(); + if (Object.isElement(content)) { + element.parentNode.replaceChild(content, element); + return element; + } + + content = Object.toHTML(content); + var parent = element.parentNode, tagName = parent.tagName.toUpperCase(); + + if (Element._insertionTranslations.tags[tagName]) { + var nextSibling = element.next(), + 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, force) { + var div = new Element('div'), + t = Element._insertionTranslations.tags[tagName]; + + var workaround = false; + if (t) workaround = true; + else if (force) { + workaround = true; + t = ['', '', 0]; + } + + if (workaround) { + div.innerHTML = ' ' + t[0] + html + t[1]; + div.removeChild(div.firstChild); + for (var i = t[2]; i--; ) { + 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: ['', '
', 1], + TBODY: ['', '
', 2], + TR: ['', '
', 3], + TD: ['
', '
', 4], + SELECT: ['', 1] + } +}; + +(function() { + var tags = Element._insertionTranslations.tags; + Object.extend(tags, { + THEAD: tags.TBODY, + TFOOT: tags.TBODY, + TH: tags.TD + }); +})(); + +Element.Methods.Simulated = { + hasAttribute: function(element, attribute) { + attribute = Element._attributeTranslations.has[attribute] || attribute; + var node = $(element).getAttributeNode(attribute); + return !!(node && node.specified); + } +}; + +Element.Methods.ByTag = { }; + +Object.extend(Element, Element.Methods); + +(function(div) { + + if (!Prototype.BrowserFeatures.ElementExtensions && div['__proto__']) { + window.HTMLElement = { }; + window.HTMLElement.prototype = div['__proto__']; + Prototype.BrowserFeatures.ElementExtensions = true; + } + + div = null; + +})(document.createElement('div')); + +Element.extend = (function() { + + function checkDeficiency(tagName) { + if (typeof window.Element != 'undefined') { + var proto = window.Element.prototype; + if (proto) { + var id = '_' + (Math.random()+'').slice(2), + el = document.createElement(tagName); + proto[id] = 'x'; + var isBuggy = (el[id] !== 'x'); + delete proto[id]; + el = null; + return isBuggy; + } + } + return false; + } + + function extendElementWith(element, methods) { + for (var property in methods) { + var value = methods[property]; + if (Object.isFunction(value) && !(property in element)) + element[property] = value.methodize(); + } + } + + var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object'); + + if (Prototype.BrowserFeatures.SpecificElementExtensions) { + if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY) { + return function(element) { + if (element && typeof element._extendedByPrototype == 'undefined') { + var t = element.tagName; + if (t && (/^(?:object|applet|embed)$/i.test(t))) { + extendElementWith(element, Element.Methods); + extendElementWith(element, Element.Methods.Simulated); + extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]); + } + } + return element; + } + } + return Prototype.K; + } + + var Methods = { }, ByTag = Element.Methods.ByTag; + + var extend = Object.extend(function(element) { + if (!element || typeof element._extendedByPrototype != 'undefined' || + element.nodeType != 1 || element == window) return element; + + var methods = Object.clone(Methods), + tagName = element.tagName.toUpperCase(); + + if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]); + + extendElementWith(element, methods); + + element._extendedByPrototype = Prototype.emptyFunction; + return element; + + }, { + refresh: function() { + if (!Prototype.BrowserFeatures.ElementExtensions) { + Object.extend(Methods, Element.Methods); + Object.extend(Methods, Element.Methods.Simulated); + } + } + }); + + extend.refresh(); + return extend; +})(); + +if (document.documentElement.hasAttribute) { + Element.hasAttribute = function(element, attribute) { + return element.hasAttribute(attribute); + }; +} +else { + Element.hasAttribute = Element.Methods.Simulated.hasAttribute; +} + +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), + "BUTTON": Object.clone(Form.Element.Methods) + }); + } + + if (arguments.length == 2) { + var tagName = methods; + methods = arguments[1]; + } + + if (!tagName) Object.extend(Element.Methods, methods || { }); + else { + if (Object.isArray(tagName)) tagName.each(extend); + else extend(tagName); + } + + function extend(tagName) { + tagName = tagName.toUpperCase(); + if (!Element.Methods.ByTag[tagName]) + Element.Methods.ByTag[tagName] = { }; + Object.extend(Element.Methods.ByTag[tagName], methods); + } + + function copy(methods, destination, onlyIfAbsent) { + onlyIfAbsent = onlyIfAbsent || false; + for (var property in methods) { + var value = methods[property]; + if (!Object.isFunction(value)) continue; + if (!onlyIfAbsent || !(property in destination)) + destination[property] = value.methodize(); + } + } + + function findDOMClass(tagName) { + var klass; + var trans = { + "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph", + "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList", + "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading", + "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote", + "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION": + "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD": + "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR": + "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET": + "FrameSet", "IFRAME": "IFrame" + }; + if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element'; + if (window[klass]) return window[klass]; + klass = 'HTML' + tagName + 'Element'; + if (window[klass]) return window[klass]; + klass = 'HTML' + tagName.capitalize() + 'Element'; + if (window[klass]) return window[klass]; + + var element = document.createElement(tagName), + proto = element['__proto__'] || element.constructor.prototype; + + element = null; + return proto; + } + + var elementPrototype = window.HTMLElement ? HTMLElement.prototype : + Element.prototype; + + if (F.ElementExtensions) { + copy(Element.Methods, elementPrototype); + copy(Element.Methods.Simulated, elementPrototype, true); + } + + if (F.SpecificElementExtensions) { + for (var tag in Element.Methods.ByTag) { + var klass = findDOMClass(tag); + if (Object.isUndefined(klass)) continue; + copy(T[tag], klass.prototype); + } + } + + Object.extend(Element, Element.Methods); + delete Element.ByTag; + + if (Element.extend.refresh) Element.extend.refresh(); + Element.cache = { }; +}; + + +document.viewport = { + + getDimensions: function() { + return { width: this.getWidth(), height: this.getHeight() }; + }, + + getScrollOffsets: function() { + return Element._returnOffset( + window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft, + window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop); + } +}; + +(function(viewport) { + var B = Prototype.Browser, doc = document, element, property = {}; + + function getRootElement() { + if (B.WebKit && !doc.evaluate) + return document; + + if (B.Opera && window.parseFloat(window.opera.version()) < 9.5) + return document.body; + + return document.documentElement; + } + + function define(D) { + if (!element) element = getRootElement(); + + property[D] = 'client' + D; + + viewport['get' + D] = function() { return element[property[D]] }; + return viewport['get' + D](); + } + + viewport.getWidth = define.curry('Width'); + + viewport.getHeight = define.curry('Height'); +})(document.viewport); + + +Element.Storage = { + UID: 1 +}; + +Element.addMethods({ + getStorage: function(element) { + if (!(element = $(element))) return; + + var uid; + if (element === window) { + uid = 0; + } else { + if (typeof element._prototypeUID === "undefined") + element._prototypeUID = Element.Storage.UID++; + uid = element._prototypeUID; + } + + if (!Element.Storage[uid]) + Element.Storage[uid] = $H(); + + return Element.Storage[uid]; + }, + + store: function(element, key, value) { + if (!(element = $(element))) return; + + if (arguments.length === 2) { + Element.getStorage(element).update(key); + } else { + Element.getStorage(element).set(key, value); + } + + return element; + }, + + retrieve: function(element, key, defaultValue) { + if (!(element = $(element))) return; + var hash = Element.getStorage(element), value = hash.get(key); + + if (Object.isUndefined(value)) { + hash.set(key, defaultValue); + value = defaultValue; + } + + return value; + }, + + clone: function(element, deep) { + if (!(element = $(element))) return; + var clone = element.cloneNode(deep); + clone._prototypeUID = void 0; + if (deep) { + var descendants = Element.select(clone, '*'), + i = descendants.length; + while (i--) { + descendants[i]._prototypeUID = void 0; + } + } + return Element.extend(clone); + }, + + purge: function(element) { + if (!(element = $(element))) return; + var purgeElement = Element._purgeElement; + + purgeElement(element); + + var descendants = element.getElementsByTagName('*'), + i = descendants.length; + + while (i--) purgeElement(descendants[i]); + + return null; + } +}); + +(function() { + + function toDecimal(pctString) { + var match = pctString.match(/^(\d+)%?$/i); + if (!match) return null; + return (Number(match[1]) / 100); + } + + function getPixelValue(value, property, context) { + var element = null; + if (Object.isElement(value)) { + element = value; + value = element.getStyle(property); + } + + if (value === null) { + return null; + } + + if ((/^(?:-)?\d+(\.\d+)?(px)?$/i).test(value)) { + return window.parseFloat(value); + } + + var isPercentage = value.include('%'), isViewport = (context === document.viewport); + + if (/\d/.test(value) && element && element.runtimeStyle && !(isPercentage && isViewport)) { + var style = element.style.left, rStyle = element.runtimeStyle.left; + element.runtimeStyle.left = element.currentStyle.left; + element.style.left = value || 0; + value = element.style.pixelLeft; + element.style.left = style; + element.runtimeStyle.left = rStyle; + + return value; + } + + if (element && isPercentage) { + context = context || element.parentNode; + var decimal = toDecimal(value); + var whole = null; + var position = element.getStyle('position'); + + var isHorizontal = property.include('left') || property.include('right') || + property.include('width'); + + var isVertical = property.include('top') || property.include('bottom') || + property.include('height'); + + if (context === document.viewport) { + if (isHorizontal) { + whole = document.viewport.getWidth(); + } else if (isVertical) { + whole = document.viewport.getHeight(); + } + } else { + if (isHorizontal) { + whole = $(context).measure('width'); + } else if (isVertical) { + whole = $(context).measure('height'); + } + } + + return (whole === null) ? 0 : whole * decimal; + } + + return 0; + } + + function toCSSPixels(number) { + if (Object.isString(number) && number.endsWith('px')) { + return number; + } + return number + 'px'; + } + + function isDisplayed(element) { + var originalElement = element; + while (element && element.parentNode) { + var display = element.getStyle('display'); + if (display === 'none') { + return false; + } + element = $(element.parentNode); + } + return true; + } + + var hasLayout = Prototype.K; + if ('currentStyle' in document.documentElement) { + hasLayout = function(element) { + if (!element.currentStyle.hasLayout) { + element.style.zoom = 1; + } + return element; + }; + } + + function cssNameFor(key) { + if (key.include('border')) key = key + '-width'; + return key.camelize(); + } + + Element.Layout = Class.create(Hash, { + initialize: function($super, element, preCompute) { + $super(); + this.element = $(element); + + Element.Layout.PROPERTIES.each( function(property) { + this._set(property, null); + }, this); + + if (preCompute) { + this._preComputing = true; + this._begin(); + Element.Layout.PROPERTIES.each( this._compute, this ); + this._end(); + this._preComputing = false; + } + }, + + _set: function(property, value) { + return Hash.prototype.set.call(this, property, value); + }, + + set: function(property, value) { + throw "Properties of Element.Layout are read-only."; + }, + + get: function($super, property) { + var value = $super(property); + return value === null ? this._compute(property) : value; + }, + + _begin: function() { + if (this._prepared) return; + + var element = this.element; + if (isDisplayed(element)) { + this._prepared = true; + return; + } + + var originalStyles = { + position: element.style.position || '', + width: element.style.width || '', + visibility: element.style.visibility || '', + display: element.style.display || '' + }; + + element.store('prototype_original_styles', originalStyles); + + var position = element.getStyle('position'), + width = element.getStyle('width'); + + if (width === "0px" || width === null) { + element.style.display = 'block'; + width = element.getStyle('width'); + } + + var context = (position === 'fixed') ? document.viewport : + element.parentNode; + + element.setStyle({ + position: 'absolute', + visibility: 'hidden', + display: 'block' + }); + + var positionedWidth = element.getStyle('width'); + + var newWidth; + if (width && (positionedWidth === width)) { + newWidth = getPixelValue(element, 'width', context); + } else if (position === 'absolute' || position === 'fixed') { + newWidth = getPixelValue(element, 'width', context); + } else { + var parent = element.parentNode, pLayout = $(parent).getLayout(); + + newWidth = pLayout.get('width') - + this.get('margin-left') - + this.get('border-left') - + this.get('padding-left') - + this.get('padding-right') - + this.get('border-right') - + this.get('margin-right'); + } + + element.setStyle({ width: newWidth + 'px' }); + + this._prepared = true; + }, + + _end: function() { + var element = this.element; + var originalStyles = element.retrieve('prototype_original_styles'); + element.store('prototype_original_styles', null); + element.setStyle(originalStyles); + this._prepared = false; + }, + + _compute: function(property) { + var COMPUTATIONS = Element.Layout.COMPUTATIONS; + if (!(property in COMPUTATIONS)) { + throw "Property not found."; + } + + return this._set(property, COMPUTATIONS[property].call(this, this.element)); + }, + + toObject: function() { + var args = $A(arguments); + var keys = (args.length === 0) ? Element.Layout.PROPERTIES : + args.join(' ').split(' '); + var obj = {}; + keys.each( function(key) { + if (!Element.Layout.PROPERTIES.include(key)) return; + var value = this.get(key); + if (value != null) obj[key] = value; + }, this); + return obj; + }, + + toHash: function() { + var obj = this.toObject.apply(this, arguments); + return new Hash(obj); + }, + + toCSS: function() { + var args = $A(arguments); + var keys = (args.length === 0) ? Element.Layout.PROPERTIES : + args.join(' ').split(' '); + var css = {}; + + keys.each( function(key) { + if (!Element.Layout.PROPERTIES.include(key)) return; + if (Element.Layout.COMPOSITE_PROPERTIES.include(key)) return; + + var value = this.get(key); + if (value != null) css[cssNameFor(key)] = value + 'px'; + }, this); + return css; + }, + + inspect: function() { + return "#"; + } + }); + + Object.extend(Element.Layout, { + PROPERTIES: $w('height width top left right bottom border-left border-right border-top border-bottom padding-left padding-right padding-top padding-bottom margin-top margin-bottom margin-left margin-right padding-box-width padding-box-height border-box-width border-box-height margin-box-width margin-box-height'), + + COMPOSITE_PROPERTIES: $w('padding-box-width padding-box-height margin-box-width margin-box-height border-box-width border-box-height'), + + COMPUTATIONS: { + 'height': function(element) { + if (!this._preComputing) this._begin(); + + var bHeight = this.get('border-box-height'); + if (bHeight <= 0) { + if (!this._preComputing) this._end(); + return 0; + } + + var bTop = this.get('border-top'), + bBottom = this.get('border-bottom'); + + var pTop = this.get('padding-top'), + pBottom = this.get('padding-bottom'); + + if (!this._preComputing) this._end(); + + return bHeight - bTop - bBottom - pTop - pBottom; + }, + + 'width': function(element) { + if (!this._preComputing) this._begin(); + + var bWidth = this.get('border-box-width'); + if (bWidth <= 0) { + if (!this._preComputing) this._end(); + return 0; + } + + var bLeft = this.get('border-left'), + bRight = this.get('border-right'); + + var pLeft = this.get('padding-left'), + pRight = this.get('padding-right'); + + if (!this._preComputing) this._end(); + + return bWidth - bLeft - bRight - pLeft - pRight; + }, + + 'padding-box-height': function(element) { + var height = this.get('height'), + pTop = this.get('padding-top'), + pBottom = this.get('padding-bottom'); + + return height + pTop + pBottom; + }, + + 'padding-box-width': function(element) { + var width = this.get('width'), + pLeft = this.get('padding-left'), + pRight = this.get('padding-right'); + + return width + pLeft + pRight; + }, + + 'border-box-height': function(element) { + if (!this._preComputing) this._begin(); + var height = element.offsetHeight; + if (!this._preComputing) this._end(); + return height; + }, + + 'border-box-width': function(element) { + if (!this._preComputing) this._begin(); + var width = element.offsetWidth; + if (!this._preComputing) this._end(); + return width; + }, + + 'margin-box-height': function(element) { + var bHeight = this.get('border-box-height'), + mTop = this.get('margin-top'), + mBottom = this.get('margin-bottom'); + + if (bHeight <= 0) return 0; + + return bHeight + mTop + mBottom; + }, + + 'margin-box-width': function(element) { + var bWidth = this.get('border-box-width'), + mLeft = this.get('margin-left'), + mRight = this.get('margin-right'); + + if (bWidth <= 0) return 0; + + return bWidth + mLeft + mRight; + }, + + 'top': function(element) { + var offset = element.positionedOffset(); + return offset.top; + }, + + 'bottom': function(element) { + var offset = element.positionedOffset(), + parent = element.getOffsetParent(), + pHeight = parent.measure('height'); + + var mHeight = this.get('border-box-height'); + + return pHeight - mHeight - offset.top; + }, + + 'left': function(element) { + var offset = element.positionedOffset(); + return offset.left; + }, + + 'right': function(element) { + var offset = element.positionedOffset(), + parent = element.getOffsetParent(), + pWidth = parent.measure('width'); + + var mWidth = this.get('border-box-width'); + + return pWidth - mWidth - offset.left; + }, + + 'padding-top': function(element) { + return getPixelValue(element, 'paddingTop'); + }, + + 'padding-bottom': function(element) { + return getPixelValue(element, 'paddingBottom'); + }, + + 'padding-left': function(element) { + return getPixelValue(element, 'paddingLeft'); + }, + + 'padding-right': function(element) { + return getPixelValue(element, 'paddingRight'); + }, + + 'border-top': function(element) { + return getPixelValue(element, 'borderTopWidth'); + }, + + 'border-bottom': function(element) { + return getPixelValue(element, 'borderBottomWidth'); + }, + + 'border-left': function(element) { + return getPixelValue(element, 'borderLeftWidth'); + }, + + 'border-right': function(element) { + return getPixelValue(element, 'borderRightWidth'); + }, + + 'margin-top': function(element) { + return getPixelValue(element, 'marginTop'); + }, + + 'margin-bottom': function(element) { + return getPixelValue(element, 'marginBottom'); + }, + + 'margin-left': function(element) { + return getPixelValue(element, 'marginLeft'); + }, + + 'margin-right': function(element) { + return getPixelValue(element, 'marginRight'); + } + } + }); + + if ('getBoundingClientRect' in document.documentElement) { + Object.extend(Element.Layout.COMPUTATIONS, { + 'right': function(element) { + var parent = hasLayout(element.getOffsetParent()); + var rect = element.getBoundingClientRect(), + pRect = parent.getBoundingClientRect(); + + return (pRect.right - rect.right).round(); + }, + + 'bottom': function(element) { + var parent = hasLayout(element.getOffsetParent()); + var rect = element.getBoundingClientRect(), + pRect = parent.getBoundingClientRect(); + + return (pRect.bottom - rect.bottom).round(); + } + }); + } + + Element.Offset = Class.create({ + initialize: function(left, top) { + this.left = left.round(); + this.top = top.round(); + + this[0] = this.left; + this[1] = this.top; + }, + + relativeTo: function(offset) { + return new Element.Offset( + this.left - offset.left, + this.top - offset.top + ); + }, + + inspect: function() { + return "#".interpolate(this); + }, + + toString: function() { + return "[#{left}, #{top}]".interpolate(this); + }, + + toArray: function() { + return [this.left, this.top]; + } + }); + + function getLayout(element, preCompute) { + return new Element.Layout(element, preCompute); + } + + function measure(element, property) { + return $(element).getLayout().get(property); + } + + function getDimensions(element) { + element = $(element); + var display = Element.getStyle(element, 'display'); + + if (display && display !== 'none') { + return { width: element.offsetWidth, height: element.offsetHeight }; + } + + var style = element.style; + var originalStyles = { + visibility: style.visibility, + position: style.position, + display: style.display + }; + + var newStyles = { + visibility: 'hidden', + display: 'block' + }; + + if (originalStyles.position !== 'fixed') + newStyles.position = 'absolute'; + + Element.setStyle(element, newStyles); + + var dimensions = { + width: element.offsetWidth, + height: element.offsetHeight + }; + + Element.setStyle(element, originalStyles); + + return dimensions; + } + + function getOffsetParent(element) { + element = $(element); + + if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element)) + return $(document.body); + + var isInline = (Element.getStyle(element, 'display') === 'inline'); + if (!isInline && element.offsetParent) return $(element.offsetParent); + + while ((element = element.parentNode) && element !== document.body) { + if (Element.getStyle(element, 'position') !== 'static') { + return isHtml(element) ? $(document.body) : $(element); + } + } + + return $(document.body); + } + + + function cumulativeOffset(element) { + element = $(element); + var valueT = 0, valueL = 0; + if (element.parentNode) { + do { + valueT += element.offsetTop || 0; + valueL += element.offsetLeft || 0; + element = element.offsetParent; + } while (element); + } + return new Element.Offset(valueL, valueT); + } + + function positionedOffset(element) { + element = $(element); + + var layout = element.getLayout(); + + var valueT = 0, valueL = 0; + do { + valueT += element.offsetTop || 0; + valueL += element.offsetLeft || 0; + element = element.offsetParent; + if (element) { + if (isBody(element)) break; + var p = Element.getStyle(element, 'position'); + if (p !== 'static') break; + } + } while (element); + + valueL -= layout.get('margin-top'); + valueT -= layout.get('margin-left'); + + return new Element.Offset(valueL, valueT); + } + + function cumulativeScrollOffset(element) { + var valueT = 0, valueL = 0; + do { + valueT += element.scrollTop || 0; + valueL += element.scrollLeft || 0; + element = element.parentNode; + } while (element); + return new Element.Offset(valueL, valueT); + } + + function viewportOffset(forElement) { + element = $(element); + var valueT = 0, valueL = 0, docBody = document.body; + + var element = forElement; + do { + valueT += element.offsetTop || 0; + valueL += element.offsetLeft || 0; + if (element.offsetParent == docBody && + Element.getStyle(element, 'position') == 'absolute') break; + } while (element = element.offsetParent); + + element = forElement; + do { + if (element != docBody) { + valueT -= element.scrollTop || 0; + valueL -= element.scrollLeft || 0; + } + } while (element = element.parentNode); + return new Element.Offset(valueL, valueT); + } + + function absolutize(element) { + element = $(element); + + if (Element.getStyle(element, 'position') === 'absolute') { + return element; + } + + var offsetParent = getOffsetParent(element); + var eOffset = element.viewportOffset(), + pOffset = offsetParent.viewportOffset(); + + var offset = eOffset.relativeTo(pOffset); + var layout = element.getLayout(); + + element.store('prototype_absolutize_original_styles', { + left: element.getStyle('left'), + top: element.getStyle('top'), + width: element.getStyle('width'), + height: element.getStyle('height') + }); + + element.setStyle({ + position: 'absolute', + top: offset.top + 'px', + left: offset.left + 'px', + width: layout.get('width') + 'px', + height: layout.get('height') + 'px' + }); + + return element; + } + + function relativize(element) { + element = $(element); + if (Element.getStyle(element, 'position') === 'relative') { + return element; + } + + var originalStyles = + element.retrieve('prototype_absolutize_original_styles'); + + if (originalStyles) element.setStyle(originalStyles); + return element; + } + + if (Prototype.Browser.IE) { + getOffsetParent = getOffsetParent.wrap( + function(proceed, element) { + element = $(element); + + if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element)) + 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; + } + ); + + positionedOffset = positionedOffset.wrap(function(proceed, element) { + element = $(element); + if (!element.parentNode) return new Element.Offset(0, 0); + var position = element.getStyle('position'); + if (position !== 'static') return proceed(element); + + var offsetParent = element.getOffsetParent(); + if (offsetParent && offsetParent.getStyle('position') === 'fixed') + hasLayout(offsetParent); + + element.setStyle({ position: 'relative' }); + var value = proceed(element); + element.setStyle({ position: position }); + return value; + }); + } else if (Prototype.Browser.Webkit) { + cumulativeOffset = function(element) { + element = $(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 new Element.Offset(valueL, valueT); + }; + } + + + Element.addMethods({ + getLayout: getLayout, + measure: measure, + getDimensions: getDimensions, + getOffsetParent: getOffsetParent, + cumulativeOffset: cumulativeOffset, + positionedOffset: positionedOffset, + cumulativeScrollOffset: cumulativeScrollOffset, + viewportOffset: viewportOffset, + absolutize: absolutize, + relativize: relativize + }); + + function isBody(element) { + return element.nodeName.toUpperCase() === 'BODY'; + } + + function isHtml(element) { + return element.nodeName.toUpperCase() === 'HTML'; + } + + function isDocument(element) { + return element.nodeType === Node.DOCUMENT_NODE; + } + + function isDetached(element) { + return element !== document.body && + !Element.descendantOf(element, document.body); + } + + if ('getBoundingClientRect' in document.documentElement) { + Element.addMethods({ + viewportOffset: function(element) { + element = $(element); + if (isDetached(element)) return new Element.Offset(0, 0); + + var rect = element.getBoundingClientRect(), + docEl = document.documentElement; + return new Element.Offset(rect.left - docEl.clientLeft, + rect.top - docEl.clientTop); + } + }); + } +})(); +window.$$ = function() { + var expression = $A(arguments).join(', '); + return Prototype.Selector.select(expression, document); +}; + +Prototype.Selector = (function() { + + function select() { + throw new Error('Method "Prototype.Selector.select" must be defined.'); + } + + function match() { + throw new Error('Method "Prototype.Selector.match" must be defined.'); + } + + function find(elements, expression, index) { + index = index || 0; + var match = Prototype.Selector.match, length = elements.length, matchIndex = 0, i; + + for (i = 0; i < length; i++) { + if (match(elements[i], expression) && index == matchIndex++) { + return Element.extend(elements[i]); + } + } + } + + function extendElements(elements) { + for (var i = 0, length = elements.length; i < length; i++) { + Element.extend(elements[i]); + } + return elements; + } + + + var K = Prototype.K; + + return { + select: select, + match: match, + find: find, + extendElements: (Element.extend === K) ? K : extendElements, + extendElement: Element.extend + }; +})(); +Prototype._original_property = window.Sizzle; +/*! + * Sizzle CSS Selector Engine - v1.0 + * Copyright 2009, The Dojo Foundation + * Released under the MIT, BSD, and GPL Licenses. + * More information: http://sizzlejs.com/ + */ +(function(){ + +var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g, + done = 0, + toString = Object.prototype.toString, + hasDuplicate = false, + baseHasDuplicate = true; + +[0, 0].sort(function(){ + baseHasDuplicate = false; + return 0; +}); + +var Sizzle = function(selector, context, results, seed) { + results = results || []; + var origContext = context = context || document; + + if ( context.nodeType !== 1 && context.nodeType !== 9 ) { + return []; + } + + if ( !selector || typeof selector !== "string" ) { + return results; + } + + var parts = [], m, set, checkSet, check, mode, extra, prune = true, contextXML = isXML(context), + soFar = selector; + + while ( (chunker.exec(""), m = chunker.exec(soFar)) !== null ) { + soFar = m[3]; + + parts.push( m[1] ); + + if ( m[2] ) { + extra = m[3]; + break; + } + } + + if ( parts.length > 1 && origPOS.exec( selector ) ) { + if ( parts.length === 2 && Expr.relative[ parts[0] ] ) { + set = posProcess( parts[0] + parts[1], context ); + } else { + set = Expr.relative[ parts[0] ] ? + [ context ] : + Sizzle( parts.shift(), context ); + + while ( parts.length ) { + selector = parts.shift(); + + if ( Expr.relative[ selector ] ) + selector += parts.shift(); + + set = posProcess( selector, set ); + } + } + } else { + if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML && + Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) { + var ret = Sizzle.find( parts.shift(), context, contextXML ); + context = ret.expr ? Sizzle.filter( ret.expr, ret.set )[0] : ret.set[0]; + } + + if ( context ) { + var ret = seed ? + { expr: parts.pop(), set: makeArray(seed) } : + Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML ); + set = ret.expr ? Sizzle.filter( ret.expr, ret.set ) : ret.set; + + if ( parts.length > 0 ) { + checkSet = makeArray(set); + } else { + prune = false; + } + + while ( parts.length ) { + var cur = parts.pop(), pop = cur; + + if ( !Expr.relative[ cur ] ) { + cur = ""; + } else { + pop = parts.pop(); + } + + if ( pop == null ) { + pop = context; + } + + Expr.relative[ cur ]( checkSet, pop, contextXML ); + } + } else { + checkSet = parts = []; + } + } + + if ( !checkSet ) { + checkSet = set; + } + + if ( !checkSet ) { + throw "Syntax error, unrecognized expression: " + (cur || selector); + } + + if ( toString.call(checkSet) === "[object Array]" ) { + if ( !prune ) { + results.push.apply( results, checkSet ); + } else if ( context && context.nodeType === 1 ) { + for ( var i = 0; checkSet[i] != null; i++ ) { + if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) { + results.push( set[i] ); + } + } + } else { + for ( var i = 0; checkSet[i] != null; i++ ) { + if ( checkSet[i] && checkSet[i].nodeType === 1 ) { + results.push( set[i] ); + } + } + } + } else { + makeArray( checkSet, results ); + } + + if ( extra ) { + Sizzle( extra, origContext, results, seed ); + Sizzle.uniqueSort( results ); + } + + return results; +}; + +Sizzle.uniqueSort = function(results){ + if ( sortOrder ) { + hasDuplicate = baseHasDuplicate; + results.sort(sortOrder); + + if ( hasDuplicate ) { + for ( var i = 1; i < results.length; i++ ) { + if ( results[i] === results[i-1] ) { + results.splice(i--, 1); + } + } + } + } + + return results; +}; + +Sizzle.matches = function(expr, set){ + return Sizzle(expr, null, null, set); +}; + +Sizzle.find = function(expr, context, isXML){ + var set, match; + + if ( !expr ) { + return []; + } + + for ( var i = 0, l = Expr.order.length; i < l; i++ ) { + var type = Expr.order[i], match; + + if ( (match = Expr.leftMatch[ type ].exec( expr )) ) { + var left = match[1]; + match.splice(1,1); + + if ( left.substr( left.length - 1 ) !== "\\" ) { + match[1] = (match[1] || "").replace(/\\/g, ""); + set = Expr.find[ type ]( match, context, isXML ); + if ( set != null ) { + expr = expr.replace( Expr.match[ type ], "" ); + break; + } + } + } + } + + if ( !set ) { + set = context.getElementsByTagName("*"); + } + + return {set: set, expr: expr}; +}; + +Sizzle.filter = function(expr, set, inplace, not){ + var old = expr, result = [], curLoop = set, match, anyFound, + isXMLFilter = set && set[0] && isXML(set[0]); + + while ( expr && set.length ) { + for ( var type in Expr.filter ) { + if ( (match = Expr.match[ type ].exec( expr )) != null ) { + var filter = Expr.filter[ type ], found, item; + anyFound = false; + + if ( curLoop == result ) { + result = []; + } + + if ( Expr.preFilter[ type ] ) { + match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter ); + + if ( !match ) { + anyFound = found = true; + } else if ( match === true ) { + continue; + } + } + + if ( match ) { + for ( var i = 0; (item = curLoop[i]) != null; i++ ) { + if ( item ) { + found = filter( item, match, i, curLoop ); + var pass = not ^ !!found; + + if ( inplace && found != null ) { + if ( pass ) { + anyFound = true; + } else { + curLoop[i] = false; + } + } else if ( pass ) { + result.push( item ); + anyFound = true; + } + } + } + } + + if ( found !== undefined ) { + if ( !inplace ) { + curLoop = result; + } + + expr = expr.replace( Expr.match[ type ], "" ); + + if ( !anyFound ) { + return []; + } + + break; + } + } + } + + if ( expr == old ) { + if ( anyFound == null ) { + throw "Syntax error, unrecognized expression: " + expr; + } else { + break; + } + } + + old = expr; + } + + return curLoop; +}; + +var Expr = Sizzle.selectors = { + order: [ "ID", "NAME", "TAG" ], + match: { + ID: /#((?:[\w\u00c0-\uFFFF-]|\\.)+)/, + CLASS: /\.((?:[\w\u00c0-\uFFFF-]|\\.)+)/, + NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF-]|\\.)+)['"]*\]/, + ATTR: /\[\s*((?:[\w\u00c0-\uFFFF-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/, + TAG: /^((?:[\w\u00c0-\uFFFF\*-]|\\.)+)/, + CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/, + POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/, + PSEUDO: /:((?:[\w\u00c0-\uFFFF-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/ + }, + leftMatch: {}, + attrMap: { + "class": "className", + "for": "htmlFor" + }, + attrHandle: { + href: function(elem){ + return elem.getAttribute("href"); + } + }, + relative: { + "+": function(checkSet, part, isXML){ + var isPartStr = typeof part === "string", + isTag = isPartStr && !/\W/.test(part), + isPartStrNotTag = isPartStr && !isTag; + + if ( isTag && !isXML ) { + part = part.toUpperCase(); + } + + for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) { + if ( (elem = checkSet[i]) ) { + while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {} + + checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ? + elem || false : + elem === part; + } + } + + if ( isPartStrNotTag ) { + Sizzle.filter( part, checkSet, true ); + } + }, + ">": function(checkSet, part, isXML){ + var isPartStr = typeof part === "string"; + + if ( isPartStr && !/\W/.test(part) ) { + part = isXML ? part : part.toUpperCase(); + + for ( var i = 0, l = checkSet.length; i < l; i++ ) { + var elem = checkSet[i]; + if ( elem ) { + var parent = elem.parentNode; + checkSet[i] = parent.nodeName === part ? parent : false; + } + } + } else { + for ( var i = 0, l = checkSet.length; i < l; i++ ) { + var elem = checkSet[i]; + if ( elem ) { + checkSet[i] = isPartStr ? + elem.parentNode : + elem.parentNode === part; + } + } + + if ( isPartStr ) { + Sizzle.filter( part, checkSet, true ); + } + } + }, + "": function(checkSet, part, isXML){ + var doneName = done++, checkFn = dirCheck; + + if ( !/\W/.test(part) ) { + var nodeCheck = part = isXML ? part : part.toUpperCase(); + checkFn = dirNodeCheck; + } + + checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML); + }, + "~": function(checkSet, part, isXML){ + var doneName = done++, checkFn = dirCheck; + + if ( typeof part === "string" && !/\W/.test(part) ) { + var nodeCheck = part = isXML ? part : part.toUpperCase(); + checkFn = dirNodeCheck; + } + + checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML); + } + }, + find: { + ID: function(match, context, isXML){ + if ( typeof context.getElementById !== "undefined" && !isXML ) { + var m = context.getElementById(match[1]); + return m ? [m] : []; + } + }, + NAME: function(match, context, isXML){ + if ( typeof context.getElementsByName !== "undefined" ) { + var ret = [], results = context.getElementsByName(match[1]); + + for ( var i = 0, l = results.length; i < l; i++ ) { + if ( results[i].getAttribute("name") === match[1] ) { + ret.push( results[i] ); + } + } + + return ret.length === 0 ? null : ret; + } + }, + TAG: function(match, context){ + return context.getElementsByTagName(match[1]); + } + }, + preFilter: { + CLASS: function(match, curLoop, inplace, result, not, isXML){ + match = " " + match[1].replace(/\\/g, "") + " "; + + if ( isXML ) { + return match; + } + + for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) { + if ( elem ) { + if ( not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0) ) { + if ( !inplace ) + result.push( elem ); + } else if ( inplace ) { + curLoop[i] = false; + } + } + } + + return false; + }, + ID: function(match){ + return match[1].replace(/\\/g, ""); + }, + TAG: function(match, curLoop){ + for ( var i = 0; curLoop[i] === false; i++ ){} + return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase(); + }, + CHILD: function(match){ + if ( match[1] == "nth" ) { + var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec( + match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" || + !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]); + + match[2] = (test[1] + (test[2] || 1)) - 0; + match[3] = test[3] - 0; + } + + match[0] = done++; + + return match; + }, + ATTR: function(match, curLoop, inplace, result, not, isXML){ + var name = match[1].replace(/\\/g, ""); + + if ( !isXML && Expr.attrMap[name] ) { + match[1] = Expr.attrMap[name]; + } + + if ( match[2] === "~=" ) { + match[4] = " " + match[4] + " "; + } + + return match; + }, + PSEUDO: function(match, curLoop, inplace, result, not){ + if ( match[1] === "not" ) { + if ( ( chunker.exec(match[3]) || "" ).length > 1 || /^\w/.test(match[3]) ) { + match[3] = Sizzle(match[3], null, null, curLoop); + } else { + var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not); + if ( !inplace ) { + result.push.apply( result, ret ); + } + return false; + } + } else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) { + return true; + } + + return match; + }, + POS: function(match){ + match.unshift( true ); + return match; + } + }, + filters: { + enabled: function(elem){ + return elem.disabled === false && elem.type !== "hidden"; + }, + disabled: function(elem){ + return elem.disabled === true; + }, + checked: function(elem){ + return elem.checked === true; + }, + selected: function(elem){ + elem.parentNode.selectedIndex; + return elem.selected === true; + }, + parent: function(elem){ + return !!elem.firstChild; + }, + empty: function(elem){ + return !elem.firstChild; + }, + has: function(elem, i, match){ + return !!Sizzle( match[3], elem ).length; + }, + header: function(elem){ + return /h\d/i.test( elem.nodeName ); + }, + text: function(elem){ + return "text" === elem.type; + }, + radio: function(elem){ + return "radio" === elem.type; + }, + checkbox: function(elem){ + return "checkbox" === elem.type; + }, + file: function(elem){ + return "file" === elem.type; + }, + password: function(elem){ + return "password" === elem.type; + }, + submit: function(elem){ + return "submit" === elem.type; + }, + image: function(elem){ + return "image" === elem.type; + }, + reset: function(elem){ + return "reset" === elem.type; + }, + button: function(elem){ + return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON"; + }, + input: function(elem){ + return /input|select|textarea|button/i.test(elem.nodeName); + } + }, + setFilters: { + first: function(elem, i){ + return i === 0; + }, + last: function(elem, i, match, array){ + return i === array.length - 1; + }, + even: function(elem, i){ + return i % 2 === 0; + }, + odd: function(elem, i){ + return i % 2 === 1; + }, + lt: function(elem, i, match){ + return i < match[3] - 0; + }, + gt: function(elem, i, match){ + return i > match[3] - 0; + }, + nth: function(elem, i, match){ + return match[3] - 0 == i; + }, + eq: function(elem, i, match){ + return match[3] - 0 == i; + } + }, + filter: { + PSEUDO: function(elem, match, i, array){ + var name = match[1], filter = Expr.filters[ name ]; + + if ( filter ) { + return filter( elem, i, match, array ); + } else if ( name === "contains" ) { + return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0; + } else if ( name === "not" ) { + var not = match[3]; + + for ( var i = 0, l = not.length; i < l; i++ ) { + if ( not[i] === elem ) { + return false; + } + } + + return true; + } + }, + CHILD: function(elem, match){ + var type = match[1], node = elem; + switch (type) { + case 'only': + case 'first': + while ( (node = node.previousSibling) ) { + if ( node.nodeType === 1 ) return false; + } + if ( type == 'first') return true; + node = elem; + case 'last': + while ( (node = node.nextSibling) ) { + if ( node.nodeType === 1 ) return false; + } + return true; + case 'nth': + var first = match[2], last = match[3]; + + if ( first == 1 && last == 0 ) { + return true; + } + + var doneName = match[0], + parent = elem.parentNode; + + if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) { + var count = 0; + for ( node = parent.firstChild; node; node = node.nextSibling ) { + if ( node.nodeType === 1 ) { + node.nodeIndex = ++count; + } + } + parent.sizcache = doneName; + } + + var diff = elem.nodeIndex - last; + if ( first == 0 ) { + return diff == 0; + } else { + return ( diff % first == 0 && diff / first >= 0 ); + } + } + }, + ID: function(elem, match){ + return elem.nodeType === 1 && elem.getAttribute("id") === match; + }, + TAG: function(elem, match){ + return (match === "*" && elem.nodeType === 1) || elem.nodeName === match; + }, + CLASS: function(elem, match){ + return (" " + (elem.className || elem.getAttribute("class")) + " ") + .indexOf( match ) > -1; + }, + ATTR: function(elem, match){ + var name = match[1], + result = Expr.attrHandle[ name ] ? + Expr.attrHandle[ name ]( elem ) : + elem[ name ] != null ? + elem[ name ] : + elem.getAttribute( name ), + value = result + "", + type = match[2], + check = match[4]; + + return result == null ? + type === "!=" : + type === "=" ? + value === check : + type === "*=" ? + value.indexOf(check) >= 0 : + type === "~=" ? + (" " + value + " ").indexOf(check) >= 0 : + !check ? + value && result !== false : + type === "!=" ? + value != check : + type === "^=" ? + value.indexOf(check) === 0 : + type === "$=" ? + value.substr(value.length - check.length) === check : + type === "|=" ? + value === check || value.substr(0, check.length + 1) === check + "-" : + false; + }, + POS: function(elem, match, i, array){ + var name = match[2], filter = Expr.setFilters[ name ]; + + if ( filter ) { + return filter( elem, i, match, array ); + } + } + } +}; + +var origPOS = Expr.match.POS; + +for ( var type in Expr.match ) { + Expr.match[ type ] = new RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source ); + Expr.leftMatch[ type ] = new RegExp( /(^(?:.|\r|\n)*?)/.source + Expr.match[ type ].source ); +} + +var makeArray = function(array, results) { + array = Array.prototype.slice.call( array, 0 ); + + if ( results ) { + results.push.apply( results, array ); + return results; + } + + return array; +}; + +try { + Array.prototype.slice.call( document.documentElement.childNodes, 0 ); + +} catch(e){ + makeArray = function(array, results) { + var ret = results || []; + + if ( toString.call(array) === "[object Array]" ) { + Array.prototype.push.apply( ret, array ); + } else { + if ( typeof array.length === "number" ) { + for ( var i = 0, l = array.length; i < l; i++ ) { + ret.push( array[i] ); + } + } else { + for ( var i = 0; array[i]; i++ ) { + ret.push( array[i] ); + } + } + } + + return ret; + }; +} + +var sortOrder; + +if ( document.documentElement.compareDocumentPosition ) { + sortOrder = function( a, b ) { + if ( !a.compareDocumentPosition || !b.compareDocumentPosition ) { + if ( a == b ) { + hasDuplicate = true; + } + return 0; + } + + var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1; + if ( ret === 0 ) { + hasDuplicate = true; + } + return ret; + }; +} else if ( "sourceIndex" in document.documentElement ) { + sortOrder = function( a, b ) { + if ( !a.sourceIndex || !b.sourceIndex ) { + if ( a == b ) { + hasDuplicate = true; + } + return 0; + } + + var ret = a.sourceIndex - b.sourceIndex; + if ( ret === 0 ) { + hasDuplicate = true; + } + return ret; + }; +} else if ( document.createRange ) { + sortOrder = function( a, b ) { + if ( !a.ownerDocument || !b.ownerDocument ) { + if ( a == b ) { + hasDuplicate = true; + } + return 0; + } + + var aRange = a.ownerDocument.createRange(), bRange = b.ownerDocument.createRange(); + aRange.setStart(a, 0); + aRange.setEnd(a, 0); + bRange.setStart(b, 0); + bRange.setEnd(b, 0); + var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange); + if ( ret === 0 ) { + hasDuplicate = true; + } + return ret; + }; +} + +(function(){ + var form = document.createElement("div"), + id = "script" + (new Date).getTime(); + form.innerHTML = ""; + + var root = document.documentElement; + root.insertBefore( form, root.firstChild ); + + if ( !!document.getElementById( id ) ) { + Expr.find.ID = function(match, context, isXML){ + if ( typeof context.getElementById !== "undefined" && !isXML ) { + var m = context.getElementById(match[1]); + return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : []; + } + }; + + Expr.filter.ID = function(elem, match){ + var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id"); + return elem.nodeType === 1 && node && node.nodeValue === match; + }; + } + + root.removeChild( form ); + root = form = null; // release memory in IE +})(); + +(function(){ + + var div = document.createElement("div"); + div.appendChild( document.createComment("") ); + + if ( div.getElementsByTagName("*").length > 0 ) { + Expr.find.TAG = function(match, context){ + var results = context.getElementsByTagName(match[1]); + + if ( match[1] === "*" ) { + var tmp = []; + + for ( var i = 0; results[i]; i++ ) { + if ( results[i].nodeType === 1 ) { + tmp.push( results[i] ); + } + } + + results = tmp; + } + + return results; + }; + } + + div.innerHTML = ""; + if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" && + div.firstChild.getAttribute("href") !== "#" ) { + Expr.attrHandle.href = function(elem){ + return elem.getAttribute("href", 2); + }; + } + + div = null; // release memory in IE +})(); + +if ( document.querySelectorAll ) (function(){ + var oldSizzle = Sizzle, div = document.createElement("div"); + div.innerHTML = "

"; + + if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) { + return; + } + + Sizzle = function(query, context, extra, seed){ + context = context || document; + + if ( !seed && context.nodeType === 9 && !isXML(context) ) { + try { + return makeArray( context.querySelectorAll(query), extra ); + } catch(e){} + } + + return oldSizzle(query, context, extra, seed); + }; + + for ( var prop in oldSizzle ) { + Sizzle[ prop ] = oldSizzle[ prop ]; + } + + div = null; // release memory in IE +})(); + +if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){ + var div = document.createElement("div"); + div.innerHTML = "
"; + + if ( div.getElementsByClassName("e").length === 0 ) + return; + + div.lastChild.className = "e"; + + if ( div.getElementsByClassName("e").length === 1 ) + return; + + Expr.order.splice(1, 0, "CLASS"); + Expr.find.CLASS = function(match, context, isXML) { + if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) { + return context.getElementsByClassName(match[1]); + } + }; + + div = null; // release memory in IE +})(); + +function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) { + var sibDir = dir == "previousSibling" && !isXML; + for ( var i = 0, l = checkSet.length; i < l; i++ ) { + var elem = checkSet[i]; + if ( elem ) { + if ( sibDir && elem.nodeType === 1 ){ + elem.sizcache = doneName; + elem.sizset = i; + } + elem = elem[dir]; + var match = false; + + while ( elem ) { + if ( elem.sizcache === doneName ) { + match = checkSet[elem.sizset]; + break; + } + + if ( elem.nodeType === 1 && !isXML ){ + elem.sizcache = doneName; + elem.sizset = i; + } + + if ( elem.nodeName === cur ) { + match = elem; + break; + } + + elem = elem[dir]; + } + + checkSet[i] = match; + } + } +} + +function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) { + var sibDir = dir == "previousSibling" && !isXML; + for ( var i = 0, l = checkSet.length; i < l; i++ ) { + var elem = checkSet[i]; + if ( elem ) { + if ( sibDir && elem.nodeType === 1 ) { + elem.sizcache = doneName; + elem.sizset = i; + } + elem = elem[dir]; + var match = false; + + while ( elem ) { + if ( elem.sizcache === doneName ) { + match = checkSet[elem.sizset]; + break; + } + + if ( elem.nodeType === 1 ) { + if ( !isXML ) { + elem.sizcache = doneName; + elem.sizset = i; + } + if ( typeof cur !== "string" ) { + if ( elem === cur ) { + match = true; + break; + } + + } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) { + match = elem; + break; + } + } + + elem = elem[dir]; + } + + checkSet[i] = match; + } + } +} + +var contains = document.compareDocumentPosition ? function(a, b){ + return a.compareDocumentPosition(b) & 16; +} : function(a, b){ + return a !== b && (a.contains ? a.contains(b) : true); +}; + +var isXML = function(elem){ + return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" || + !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML"; +}; + +var posProcess = function(selector, context){ + var tmpSet = [], later = "", match, + root = context.nodeType ? [context] : context; + + while ( (match = Expr.match.PSEUDO.exec( selector )) ) { + later += match[0]; + selector = selector.replace( Expr.match.PSEUDO, "" ); + } + + selector = Expr.relative[selector] ? selector + "*" : selector; + + for ( var i = 0, l = root.length; i < l; i++ ) { + Sizzle( selector, root[i], tmpSet ); + } + + return Sizzle.filter( later, tmpSet ); +}; + + +window.Sizzle = Sizzle; + +})(); + +;(function(engine) { + var extendElements = Prototype.Selector.extendElements; + + function select(selector, scope) { + return extendElements(engine(selector, scope || document)); + } + + function match(element, selector) { + return engine.matches(selector, [element]).length == 1; + } + + Prototype.Selector.engine = engine; + Prototype.Selector.select = select; + Prototype.Selector.match = match; +})(Sizzle); + +window.Sizzle = Prototype._original_property; +delete Prototype._original_property; + +var Form = { + reset: function(form) { + form = $(form); + form.reset(); + return form; + }, + + serializeElements: function(elements, options) { + if (typeof options != 'object') options = { hash: !!options }; + else if (Object.isUndefined(options.hash)) options.hash = true; + var key, value, submitted = false, submit = options.submit, accumulator, initial; + + if (options.hash) { + initial = {}; + accumulator = function(result, key, value) { + if (key in result) { + if (!Object.isArray(result[key])) result[key] = [result[key]]; + result[key].push(value); + } else result[key] = value; + return result; + }; + } else { + initial = ''; + accumulator = function(result, key, value) { + return result + (result ? '&' : '') + encodeURIComponent(key) + '=' + encodeURIComponent(value); + } + } + + return elements.inject(initial, 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)))) { + result = accumulator(result, key, value); + } + } + return result; + }); + } +}; + +Form.Methods = { + serialize: function(form, options) { + return Form.serializeElements(Form.getElements(form), options); + }, + + getElements: function(form) { + var elements = $(form).getElementsByTagName('*'), + element, + arr = [ ], + serializers = Form.Element.Serializers; + for (var i = 0; element = elements[i]; i++) { + arr.push(element); + } + return arr.inject([], function(elements, child) { + if (serializers[child.tagName.toLowerCase()]) + elements.push(Element.extend(child)); + return elements; + }) + }, + + getInputs: function(form, typeName, name) { + form = $(form); + var inputs = form.getElementsByTagName('input'); + + if (!typeName && !name) return $A(inputs).map(Element.extend); + + for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) { + var input = inputs[i]; + if ((typeName && input.type != typeName) || (name && input.name != name)) + continue; + matchingInputs.push(Element.extend(input)); + } + + return matchingInputs; + }, + + disable: function(form) { + form = $(form); + Form.getElements(form).invoke('disable'); + return form; + }, + + enable: function(form) { + form = $(form); + Form.getElements(form).invoke('enable'); + return form; + }, + + findFirstElement: function(form) { + var elements = $(form).getElements().findAll(function(element) { + return 'hidden' != element.type && !element.disabled; + }); + var firstByIndex = elements.findAll(function(element) { + return element.hasAttribute('tabIndex') && element.tabIndex >= 0; + }).sortBy(function(element) { return element.tabIndex }).first(); + + return firstByIndex ? firstByIndex : elements.find(function(element) { + return /^(?:input|select|textarea)$/i.test(element.tagName); + }); + }, + + focusFirstElement: function(form) { + form = $(form); + var element = form.findFirstElement(); + if (element) element.activate(); + return form; + }, + + request: function(form, options) { + form = $(form), options = Object.clone(options || { }); + + var params = options.parameters, action = form.readAttribute('action') || ''; + if (action.blank()) action = window.location.href; + options.parameters = form.serialize(true); + + if (params) { + if (Object.isString(params)) params = params.toQueryParams(); + Object.extend(options.parameters, params); + } + + if (form.hasAttribute('method') && !options.method) + options.method = form.method; + + return new Ajax.Request(action, options); + } +}; + +/*--------------------------------------------------------------------------*/ + + +Form.Element = { + focus: function(element) { + $(element).focus(); + return element; + }, + + select: function(element) { + $(element).select(); + return element; + } +}; + +Form.Element.Methods = { + + serialize: function(element) { + element = $(element); + if (!element.disabled && element.name) { + var value = element.getValue(); + if (value != undefined) { + var pair = { }; + pair[element.name] = value; + return Object.toQueryString(pair); + } + } + return ''; + }, + + getValue: function(element) { + element = $(element); + var method = element.tagName.toLowerCase(); + return Form.Element.Serializers[method](element); + }, + + setValue: function(element, value) { + element = $(element); + var method = element.tagName.toLowerCase(); + Form.Element.Serializers[method](element, value); + return element; + }, + + clear: function(element) { + $(element).value = ''; + return element; + }, + + present: function(element) { + return $(element).value != ''; + }, + + activate: function(element) { + element = $(element); + try { + element.focus(); + if (element.select && (element.tagName.toLowerCase() != 'input' || + !(/^(?:button|reset|submit)$/i.test(element.type)))) + element.select(); + } catch (e) { } + return element; + }, + + disable: function(element) { + element = $(element); + element.disabled = true; + return element; + }, + + enable: function(element) { + element = $(element); + element.disabled = false; + return element; + } +}; + +/*--------------------------------------------------------------------------*/ + +var Field = Form.Element; + +var $F = Form.Element.Methods.getValue; + +/*--------------------------------------------------------------------------*/ + +Form.Element.Serializers = (function() { + function input(element, value) { + switch (element.type.toLowerCase()) { + case 'checkbox': + case 'radio': + return inputSelector(element, value); + default: + return valueSelector(element, value); + } + } + + function inputSelector(element, value) { + if (Object.isUndefined(value)) + return element.checked ? element.value : null; + else element.checked = !!value; + } + + function valueSelector(element, value) { + if (Object.isUndefined(value)) return element.value; + else element.value = value; + } + + function select(element, value) { + if (Object.isUndefined(value)) + return (element.type === 'select-one' ? selectOne : selectMany)(element); + + 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); + } + } + + function selectOne(element) { + var index = element.selectedIndex; + return index >= 0 ? optionValue(element.options[index]) : null; + } + + function selectMany(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(optionValue(opt)); + } + return values; + } + + function optionValue(opt) { + return Element.hasAttribute(opt, 'value') ? opt.value : opt.text; + } + + return { + input: input, + inputSelector: inputSelector, + textarea: valueSelector, + select: select, + selectOne: selectOne, + selectMany: selectMany, + optionValue: optionValue, + button: valueSelector + }; +})(); + +/*--------------------------------------------------------------------------*/ + + +Abstract.TimedObserver = Class.create(PeriodicalExecuter, { + initialize: function($super, element, frequency, callback) { + $super(callback, frequency); + this.element = $(element); + this.lastValue = this.getValue(); + }, + + execute: function() { + var value = this.getValue(); + if (Object.isString(this.lastValue) && Object.isString(value) ? + this.lastValue != value : String(this.lastValue) != String(value)) { + this.callback(this.element, value); + this.lastValue = value; + } + } +}); + +Form.Element.Observer = Class.create(Abstract.TimedObserver, { + getValue: function() { + return Form.Element.getValue(this.element); + } +}); + +Form.Observer = Class.create(Abstract.TimedObserver, { + getValue: function() { + return Form.serialize(this.element); + } +}); + +/*--------------------------------------------------------------------------*/ + +Abstract.EventObserver = Class.create({ + initialize: function(element, callback) { + this.element = $(element); + this.callback = callback; + + this.lastValue = this.getValue(); + if (this.element.tagName.toLowerCase() == 'form') + this.registerFormCallbacks(); + else + this.registerCallback(this.element); + }, + + onElementEvent: function() { + var value = this.getValue(); + if (this.lastValue != value) { + this.callback(this.element, value); + this.lastValue = value; + } + }, + + registerFormCallbacks: function() { + Form.getElements(this.element).each(this.registerCallback, this); + }, + + registerCallback: function(element) { + if (element.type) { + switch (element.type.toLowerCase()) { + case 'checkbox': + case 'radio': + Event.observe(element, 'click', this.onElementEvent.bind(this)); + break; + default: + Event.observe(element, 'change', this.onElementEvent.bind(this)); + break; + } + } + } +}); + +Form.Element.EventObserver = Class.create(Abstract.EventObserver, { + getValue: function() { + return Form.Element.getValue(this.element); + } +}); + +Form.EventObserver = Class.create(Abstract.EventObserver, { + getValue: function() { + return Form.serialize(this.element); + } +}); +(function() { + + var Event = { + KEY_BACKSPACE: 8, + KEY_TAB: 9, + KEY_RETURN: 13, + KEY_ESC: 27, + KEY_LEFT: 37, + KEY_UP: 38, + KEY_RIGHT: 39, + KEY_DOWN: 40, + KEY_DELETE: 46, + KEY_HOME: 36, + KEY_END: 35, + KEY_PAGEUP: 33, + KEY_PAGEDOWN: 34, + KEY_INSERT: 45, + + cache: {} + }; + + var docEl = document.documentElement; + var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl + && 'onmouseleave' in docEl; + + + + var isIELegacyEvent = function(event) { return false; }; + + if (window.attachEvent) { + if (window.addEventListener) { + isIELegacyEvent = function(event) { + return !(event instanceof window.Event); + }; + } else { + isIELegacyEvent = function(event) { return true; }; + } + } + + var _isButton; + + function _isButtonForDOMEvents(event, code) { + return event.which ? (event.which === code + 1) : (event.button === code); + } + + var legacyButtonMap = { 0: 1, 1: 4, 2: 2 }; + function _isButtonForLegacyEvents(event, code) { + return event.button === legacyButtonMap[code]; + } + + function _isButtonForWebKit(event, code) { + switch (code) { + case 0: return event.which == 1 && !event.metaKey; + case 1: return event.which == 2 || (event.which == 1 && event.metaKey); + case 2: return event.which == 3; + default: return false; + } + } + + if (window.attachEvent) { + if (!window.addEventListener) { + _isButton = _isButtonForLegacyEvents; + } else { + _isButton = function(event, code) { + return isIELegacyEvent(event) ? _isButtonForLegacyEvents(event, code) : + _isButtonForDOMEvents(event, code); + } + } + } else if (Prototype.Browser.WebKit) { + _isButton = _isButtonForWebKit; + } else { + _isButton = _isButtonForDOMEvents; + } + + function isLeftClick(event) { return _isButton(event, 0) } + + function isMiddleClick(event) { return _isButton(event, 1) } + + function isRightClick(event) { return _isButton(event, 2) } + + function element(event) { + event = Event.extend(event); + + var node = event.target, type = event.type, + currentTarget = event.currentTarget; + + if (currentTarget && currentTarget.tagName) { + if (type === 'load' || type === 'error' || + (type === 'click' && currentTarget.tagName.toLowerCase() === 'input' + && currentTarget.type === 'radio')) + node = currentTarget; + } + + if (node.nodeType == Node.TEXT_NODE) + node = node.parentNode; + + return Element.extend(node); + } + + function findElement(event, expression) { + var element = Event.element(event); + + if (!expression) return element; + while (element) { + if (Object.isElement(element) && Prototype.Selector.match(element, expression)) { + return Element.extend(element); + } + element = element.parentNode; + } + } + + function pointer(event) { + return { x: pointerX(event), y: pointerY(event) }; + } + + function pointerX(event) { + var docElement = document.documentElement, + body = document.body || { scrollLeft: 0 }; + + return event.pageX || (event.clientX + + (docElement.scrollLeft || body.scrollLeft) - + (docElement.clientLeft || 0)); + } + + function pointerY(event) { + var docElement = document.documentElement, + body = document.body || { scrollTop: 0 }; + + return event.pageY || (event.clientY + + (docElement.scrollTop || body.scrollTop) - + (docElement.clientTop || 0)); + } + + + function stop(event) { + Event.extend(event); + event.preventDefault(); + event.stopPropagation(); + + event.stopped = true; + } + + + Event.Methods = { + isLeftClick: isLeftClick, + isMiddleClick: isMiddleClick, + isRightClick: isRightClick, + + element: element, + findElement: findElement, + + pointer: pointer, + pointerX: pointerX, + pointerY: pointerY, + + stop: stop + }; + + var methods = Object.keys(Event.Methods).inject({ }, function(m, name) { + m[name] = Event.Methods[name].methodize(); + return m; + }); + + if (window.attachEvent) { + function _relatedTarget(event) { + var element; + switch (event.type) { + case 'mouseover': + case 'mouseenter': + element = event.fromElement; + break; + case 'mouseout': + case 'mouseleave': + element = event.toElement; + break; + default: + return null; + } + return Element.extend(element); + } + + var additionalMethods = { + stopPropagation: function() { this.cancelBubble = true }, + preventDefault: function() { this.returnValue = false }, + inspect: function() { return '[object Event]' } + }; + + Event.extend = function(event, element) { + if (!event) return false; + + if (!isIELegacyEvent(event)) return event; + + if (event._extendedByPrototype) return event; + event._extendedByPrototype = Prototype.emptyFunction; + + var pointer = Event.pointer(event); + + Object.extend(event, { + target: event.srcElement || element, + relatedTarget: _relatedTarget(event), + pageX: pointer.x, + pageY: pointer.y + }); + + Object.extend(event, methods); + Object.extend(event, additionalMethods); + + return event; + }; + } else { + Event.extend = Prototype.K; + } + + if (window.addEventListener) { + Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__; + Object.extend(Event.prototype, methods); + } + + function _createResponder(element, eventName, handler) { + var registry = Element.retrieve(element, 'prototype_event_registry'); + + if (Object.isUndefined(registry)) { + CACHE.push(element); + registry = Element.retrieve(element, 'prototype_event_registry', $H()); + } + + var respondersForEvent = registry.get(eventName); + if (Object.isUndefined(respondersForEvent)) { + respondersForEvent = []; + registry.set(eventName, respondersForEvent); + } + + if (respondersForEvent.pluck('handler').include(handler)) return false; + + var responder; + if (eventName.include(":")) { + responder = function(event) { + if (Object.isUndefined(event.eventName)) + return false; + + if (event.eventName !== eventName) + return false; + + Event.extend(event, element); + handler.call(element, event); + }; + } else { + if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED && + (eventName === "mouseenter" || eventName === "mouseleave")) { + if (eventName === "mouseenter" || eventName === "mouseleave") { + responder = function(event) { + Event.extend(event, element); + + var parent = event.relatedTarget; + while (parent && parent !== element) { + try { parent = parent.parentNode; } + catch(e) { parent = element; } + } + + if (parent === element) return; + + handler.call(element, event); + }; + } + } else { + responder = function(event) { + Event.extend(event, element); + handler.call(element, event); + }; + } + } + + responder.handler = handler; + respondersForEvent.push(responder); + return responder; + } + + function _destroyCache() { + for (var i = 0, length = CACHE.length; i < length; i++) { + Event.stopObserving(CACHE[i]); + CACHE[i] = null; + } + } + + var CACHE = []; + + if (Prototype.Browser.IE) + window.attachEvent('onunload', _destroyCache); + + if (Prototype.Browser.WebKit) + window.addEventListener('unload', Prototype.emptyFunction, false); + + + var _getDOMEventName = Prototype.K, + translations = { mouseenter: "mouseover", mouseleave: "mouseout" }; + + if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) { + _getDOMEventName = function(eventName) { + return (translations[eventName] || eventName); + }; + } + + function observe(element, eventName, handler) { + element = $(element); + + var responder = _createResponder(element, eventName, handler); + + if (!responder) return element; + + if (eventName.include(':')) { + if (element.addEventListener) + element.addEventListener("dataavailable", responder, false); + else { + element.attachEvent("ondataavailable", responder); + element.attachEvent("onlosecapture", responder); + } + } else { + var actualEventName = _getDOMEventName(eventName); + + if (element.addEventListener) + element.addEventListener(actualEventName, responder, false); + else + element.attachEvent("on" + actualEventName, responder); + } + + return element; + } + + function stopObserving(element, eventName, handler) { + element = $(element); + + var registry = Element.retrieve(element, 'prototype_event_registry'); + if (!registry) return element; + + if (!eventName) { + registry.each( function(pair) { + var eventName = pair.key; + stopObserving(element, eventName); + }); + return element; + } + + var responders = registry.get(eventName); + if (!responders) return element; + + if (!handler) { + responders.each(function(r) { + stopObserving(element, eventName, r.handler); + }); + return element; + } + + var i = responders.length, responder; + while (i--) { + if (responders[i].handler === handler) { + responder = responders[i]; + break; + } + } + if (!responder) return element; + + if (eventName.include(':')) { + if (element.removeEventListener) + element.removeEventListener("dataavailable", responder, false); + else { + element.detachEvent("ondataavailable", responder); + element.detachEvent("onlosecapture", responder); + } + } else { + var actualEventName = _getDOMEventName(eventName); + if (element.removeEventListener) + element.removeEventListener(actualEventName, responder, false); + else + element.detachEvent('on' + actualEventName, responder); + } + + registry.set(eventName, responders.without(responder)); + + return element; + } + + function fire(element, eventName, memo, bubble) { + element = $(element); + + if (Object.isUndefined(bubble)) + bubble = true; + + if (element == document && document.createEvent && !element.dispatchEvent) + element = document.documentElement; + + var event; + if (document.createEvent) { + event = document.createEvent('HTMLEvents'); + event.initEvent('dataavailable', bubble, true); + } else { + event = document.createEventObject(); + event.eventType = bubble ? 'ondataavailable' : 'onlosecapture'; + } + + event.eventName = eventName; + event.memo = memo || { }; + + if (document.createEvent) + element.dispatchEvent(event); + else + element.fireEvent(event.eventType, event); + + return Event.extend(event); + } + + Event.Handler = Class.create({ + initialize: function(element, eventName, selector, callback) { + this.element = $(element); + this.eventName = eventName; + this.selector = selector; + this.callback = callback; + this.handler = this.handleEvent.bind(this); + }, + + start: function() { + Event.observe(this.element, this.eventName, this.handler); + return this; + }, + + stop: function() { + Event.stopObserving(this.element, this.eventName, this.handler); + return this; + }, + + handleEvent: function(event) { + var element = Event.findElement(event, this.selector); + if (element) this.callback.call(this.element, event, element); + } + }); + + function on(element, eventName, selector, callback) { + element = $(element); + if (Object.isFunction(selector) && Object.isUndefined(callback)) { + callback = selector, selector = null; + } + + return new Event.Handler(element, eventName, selector, callback).start(); + } + + Object.extend(Event, Event.Methods); + + Object.extend(Event, { + fire: fire, + observe: observe, + stopObserving: stopObserving, + on: on + }); + + Element.addMethods({ + fire: fire, + + observe: observe, + + stopObserving: stopObserving, + + on: on + }); + + Object.extend(document, { + fire: fire.methodize(), + + observe: observe.methodize(), + + stopObserving: stopObserving.methodize(), + + on: on.methodize(), + + loaded: false + }); + + if (window.Event) Object.extend(window.Event, Event); + else window.Event = Event; +})(); + +(function() { + /* Support for the DOMContentLoaded event is based on work by Dan Webb, + Matthias Miller, Dean Edwards, John Resig, and Diego Perini. */ + + var timer; + + function fireContentLoadedEvent() { + if (document.loaded) return; + if (timer) window.clearTimeout(timer); + document.loaded = true; + document.fire('dom:loaded'); + } + + function checkReadyState() { + if (document.readyState === 'complete') { + document.stopObserving('readystatechange', checkReadyState); + fireContentLoadedEvent(); + } + } + + function pollDoScroll() { + try { document.documentElement.doScroll('left'); } + catch(e) { + timer = pollDoScroll.defer(); + return; + } + fireContentLoadedEvent(); + } + + if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false); + } else { + document.observe('readystatechange', checkReadyState); + if (window == top) + timer = pollDoScroll.defer(); + } + + Event.observe(window, 'load', fireContentLoadedEvent); +})(); + +Element.addMethods(); + +/*------------------------------- DEPRECATED -------------------------------*/ + +Hash.toQueryString = Object.toQueryString; + +var Toggle = { display: Element.toggle }; + +Element.Methods.childOf = Element.Methods.descendantOf; + +var Insertion = { + Before: function(element, content) { + return Element.insert(element, {before:content}); + }, + + Top: function(element, content) { + return Element.insert(element, {top:content}); + }, + + Bottom: function(element, content) { + return Element.insert(element, {bottom:content}); + }, + + After: function(element, content) { + return Element.insert(element, {after:content}); + } +}; + +var $continue = new Error('"throw $continue" is deprecated, use "return" instead'); + +var Position = { + includeScrollOffsets: false, + + prepare: function() { + this.deltaX = window.pageXOffset + || document.documentElement.scrollLeft + || document.body.scrollLeft + || 0; + this.deltaY = window.pageYOffset + || document.documentElement.scrollTop + || document.body.scrollTop + || 0; + }, + + within: function(element, x, y) { + if (this.includeScrollOffsets) + return this.withinIncludingScrolloffsets(element, x, y); + this.xcomp = x; + this.ycomp = y; + this.offset = Element.cumulativeOffset(element); + + return (y >= this.offset[1] && + y < this.offset[1] + element.offsetHeight && + x >= this.offset[0] && + x < this.offset[0] + element.offsetWidth); + }, + + withinIncludingScrolloffsets: function(element, x, y) { + var offsetcache = Element.cumulativeScrollOffset(element); + + this.xcomp = x + offsetcache[0] - this.deltaX; + this.ycomp = y + offsetcache[1] - this.deltaY; + this.offset = Element.cumulativeOffset(element); + + return (this.ycomp >= this.offset[1] && + this.ycomp < this.offset[1] + element.offsetHeight && + this.xcomp >= this.offset[0] && + this.xcomp < this.offset[0] + element.offsetWidth); + }, + + overlap: function(mode, element) { + if (!mode) return 0; + if (mode == 'vertical') + return ((this.offset[1] + element.offsetHeight) - this.ycomp) / + element.offsetHeight; + if (mode == 'horizontal') + return ((this.offset[0] + element.offsetWidth) - this.xcomp) / + element.offsetWidth; + }, + + + cumulativeOffset: Element.Methods.cumulativeOffset, + + positionedOffset: Element.Methods.positionedOffset, + + absolutize: function(element) { + Position.prepare(); + return Element.absolutize(element); + }, + + relativize: function(element) { + Position.prepare(); + return Element.relativize(element); + }, + + realOffset: Element.Methods.cumulativeScrollOffset, + + offsetParent: Element.Methods.getOffsetParent, + + page: Element.Methods.viewportOffset, + + clone: function(source, target, options) { + options = options || { }; + return Element.clonePosition(target, source, options); + } +}; + +/*--------------------------------------------------------------------------*/ + +if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){ + function iter(name) { + return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]"; + } + + instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ? + function(element, className) { + className = className.toString().strip(); + var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className); + return cond ? document._getElementsByXPath('.//*' + cond, element) : []; + } : function(element, className) { + className = className.toString().strip(); + var elements = [], classNames = (/\s/.test(className) ? $w(className) : null); + if (!classNames && !className) return elements; + + var nodes = $(element).getElementsByTagName('*'); + className = ' ' + className + ' '; + + for (var i = 0, child, cn; child = nodes[i]; i++) { + if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) || + (classNames && classNames.all(function(name) { + return !name.toString().blank() && cn.include(' ' + name + ' '); + })))) + elements.push(Element.extend(child)); + } + return elements; + }; + + return function(className, parentElement) { + return $(parentElement || document.body).getElementsByClassName(className); + }; +}(Element.Methods); + +/*--------------------------------------------------------------------------*/ + +Element.ClassNames = Class.create(); +Element.ClassNames.prototype = { + initialize: function(element) { + this.element = $(element); + }, + + _each: function(iterator) { + this.element.className.split(/\s+/).select(function(name) { + return name.length > 0; + })._each(iterator); + }, + + set: function(className) { + this.element.className = className; + }, + + add: function(classNameToAdd) { + if (this.include(classNameToAdd)) return; + this.set($A(this).concat(classNameToAdd).join(' ')); + }, + + remove: function(classNameToRemove) { + if (!this.include(classNameToRemove)) return; + this.set($A(this).without(classNameToRemove).join(' ')); + }, + + toString: function() { + return $A(this).join(' '); + } +}; + +Object.extend(Element.ClassNames.prototype, Enumerable); + +/*--------------------------------------------------------------------------*/ + +(function() { + window.Selector = Class.create({ + initialize: function(expression) { + this.expression = expression.strip(); + }, + + findElements: function(rootElement) { + return Prototype.Selector.select(this.expression, rootElement); + }, + + match: function(element) { + return Prototype.Selector.match(element, this.expression); + }, + + toString: function() { + return this.expression; + }, + + inspect: function() { + return "#"; + } + }); + + Object.extend(Selector, { + matchElements: function(elements, expression) { + var match = Prototype.Selector.match, + results = []; + + for (var i = 0, length = elements.length; i < length; i++) { + var element = elements[i]; + if (match(element, expression)) { + results.push(Element.extend(element)); + } + } + return results; + }, + + findElement: function(elements, expression, index) { + index = index || 0; + var matchIndex = 0, element; + for (var i = 0, length = elements.length; i < length; i++) { + element = elements[i]; + if (Prototype.Selector.match(element, expression) && index === matchIndex++) { + return Element.extend(element); + } + } + }, + + findChildElements: function(element, expressions) { + var selector = expressions.toArray().join(', '); + return Prototype.Selector.select(selector, element || document); + } + }); +})(); -- 2.34.1