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/*<\/span><\/div>    Copyright 2009 Andrew Noyes<\/span><\/div> <\/div>    This program is free software: you can redistribute it and/or modify<\/span><\/div>    it under the terms of the GNU General Public License as published by<\/span><\/div>    the Free Software Foundation, either version 3 of the License, or<\/span><\/div>    (at your option) any later version.<\/span><\/div> <\/div>    This program is distributed in the hope that it will be useful,<\/span><\/div>    but WITHOUT ANY WARRANTY; without even the implied warranty of<\/span><\/div>    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the<\/span><\/div>    GNU General Public License for more details.<\/span><\/div> <\/div>    You should have received a copy of the GNU General Public License<\/span><\/div>    along with this program.  If not, see <http://www.gnu.org/licenses/>.<\/span><\/div>*/<\/span><\/div> <\/div>/**<\/span><\/div> * @fileoverview JavaScript Module Loader. This will<\/span><\/div> * download a JavaScript file via HTTP and process it.<\/span><\/div> * If your script requires another script, simply use<\/span><\/div> *     include("path/to/file.js");<\/span><\/div> * before calling any functions within the file, and<\/span><\/div> * the file will be downloaded and evaluated for use.<\/span><\/div> * Note that when evaluated, scripts are eval'd in an<\/span><\/div> * anonymous scope. Therefore, somewhere in your script,<\/span><\/div> * you must use some kind of namespace mechanism to<\/span><\/div> * create a namespace in the global namespace, or simply<\/span><\/div> * assign any of your functions to the global namespace<\/span><\/div> * using window.yourFunction = function etc...<\/span><\/div> * <\/span><\/div> * For more details on usage, go to<\/span><\/div> * http://www-personal.umd.umich.edu/~aknoyes/articles/2009/04/include.php<\/span><\/div> * @author Andrew Noyes noyesa@gmail.com<\/span><\/div> */<\/span><\/div> <\/div>(<\/span>function<\/span> ()<\/span> {<\/span><\/div>	/**<\/span><\/div>	 * Array of loaded JavaScript files<\/span><\/div>	 */<\/span><\/div>	var<\/span> loaded<\/span> =<\/span> [];<\/span><\/div> <\/div>	/**<\/span><\/div>	 * Cross-browser HTTP object instantiator.<\/span><\/div>	 * @returns XMLHttpRequest Object<\/span><\/div>	 * @type XMLHttpRequest<\/span><\/div>	 */<\/span><\/div>	function<\/span> getHttpObject<\/span>()<\/span> {<\/span><\/div>		var<\/span> xhr<\/span> =<\/span> false<\/span>;<\/span><\/div>		if<\/span> (<\/span>window<\/span>.<\/span>XMLHttpRequest<\/span>)<\/span> {<\/span>	// Standard HTTP request<\/span><\/div>			xhr<\/span> =<\/span> new<\/span> XMLHttpRequest<\/span>();<\/span><\/div>		}<\/span> else<\/span> if<\/span> (<\/span>window<\/span>.<\/span>ActiveXObject<\/span>)<\/span> {<\/span>	// IE HTTP request<\/span><\/div>			try<\/span> {<\/span><\/div>				xhr<\/span> =<\/span> new<\/span> ActiveXObject<\/span>(<\/span>"Msxml2.XMLHTTP"<\/span>);<\/span><\/div>			}<\/span> catch<\/span> (<\/span>e<\/span>)<\/span> {<\/span><\/div>				try<\/span> {<\/span><\/div>					xhr<\/span> =<\/span> new<\/span> ActiveXObject<\/span>(<\/span>"Microsoft.XMLHTTP"<\/span>);<\/span><\/div>				}<\/span> catch<\/span> (<\/span>e<\/span>)<\/span> {<\/span><\/div>					xhr<\/span> =<\/span> false<\/span>;<\/span><\/div>				}<\/span><\/div>			}<\/span><\/div>		}<\/span><\/div>		return<\/span> xhr<\/span>;<\/span><\/div>	}<\/span><\/div> <\/div>	/**<\/span><\/div>	 * Returns file name string without<\/span><\/div>	 * directories or domain names. Throws<\/span><\/div>	 * an exception if file isn't on the<\/span><\/div>	 * same domain as page.<\/span><\/div>	 * @params file {String} location of script<\/span><\/div>	 * @returns File name string without directories or domain<\/span><\/div>	 * @type String<\/span><\/div>	 */<\/span><\/div>	function<\/span> getBaseName<\/span>(<\/span>file<\/span>)<\/span> {<\/span><\/div>		var<\/span> protocol<\/span>,<\/span> nameSplit<\/span>,<\/span> fileName<\/span>;<\/span><\/div> <\/div>		protocol<\/span> =<\/span> file<\/span>.<\/span>substr<\/span>(<\/span>0<\/span>,<\/span> file<\/span>.<\/span>indexOf<\/span>(<\/span>":"<\/span>));<\/span><\/div>		if<\/span> (<\/span>!!<\/span>protocol<\/span>.<\/span>length<\/span>)<\/span> {<\/span><\/div>			throw<\/span> new<\/span> Error<\/span>(<\/span>"Scripts must be on same domain as document."<\/span>);<\/span><\/div>		}<\/span><\/div> <\/div>		nameSplit<\/span> =<\/span> file<\/span>.<\/span>split<\/span>(<\/span>"/"<\/span>);<\/span><\/div>		fileName<\/span> =<\/span> nameSplit<\/span>[<\/span>nameSplit<\/span>.<\/span>length<\/span> -<\/span> 1<\/span>];<\/span><\/div> <\/div>		return<\/span> fileName<\/span>;<\/span><\/div>	}<\/span><\/div> <\/div>	/**<\/span><\/div>	 * Creates a namespace and returns a reference to the<\/span><\/div>	 * last namespace created. Seen in YUI source.<\/span><\/div>	 * @param namespace {String} Namespace to be created<\/span><\/div>	 * @type Object<\/span><\/div>	 */<\/span><\/div>	window<\/span>.<\/span>namespace<\/span> =<\/span> function<\/span> ()<\/span> {<\/span><\/div>		var<\/span> i<\/span>,<\/span> il<\/span>,<\/span> objects<\/span>,<\/span> start<\/span>,<\/span> root<\/span>,<\/span> j<\/span>,<\/span> jl<\/span>;<\/span><\/div> <\/div>		for<\/span> (<\/span>i<\/span> =<\/span> 0<\/span>,<\/span> il<\/span> =<\/span> arguments<\/span>.<\/span>length<\/span>;<\/span> i<\/span> <<\/span> il<\/span>;<\/span> i<\/span>++<\/span>)<\/span> {<\/span><\/div>			objects<\/span> =<\/span> arguments<\/span>[<\/span>i<\/span>].<\/span>split<\/span>(<\/span>"."<\/span>);<\/span><\/div>			start<\/span> =<\/span> (<\/span>objects<\/span>[<\/span>0<\/span>]<\/span> ===<\/span> "window"<\/span>)<\/span> ?<\/span> 1<\/span> :<\/span> 0<\/span>;<\/span><\/div>			root<\/span> =<\/span> window<\/span>;<\/span><\/div> <\/div>			for<\/span> (<\/span>j<\/span> =<\/span> start<\/span>,<\/span> jl<\/span> =<\/span> objects<\/span>.<\/span>length<\/span>;<\/span> j<\/span> <<\/span> jl<\/span>;<\/span> j<\/span>++<\/span>)<\/span> {<\/span><\/div>				root<\/span>[<\/span>objects<\/span>[<\/span>j<\/span>]]<\/span> =<\/span> root<\/span>[<\/span>objects<\/span>[<\/span>j<\/span>]]<\/span> ||<\/span> {};<\/span><\/div>				root<\/span> =<\/span> root<\/span>[<\/span>objects<\/span>[<\/span>j<\/span>]];<\/span><\/div>			}<\/span><\/div>		}<\/span><\/div> <\/div>		return<\/span> root<\/span>;<\/span><\/div>	};<\/span><\/div> <\/div>	/**<\/span><\/div>	 * Downloads and evaluates script files if<\/span><\/div>	 * they are located on the same domain as<\/span><\/div>	 * document.<\/span><\/div>	 * @params file {String} URL location of script<\/span><\/div>	 * @returns Boolean if download and eval is successful<\/span><\/div>	 * @type Bool<\/span><\/div>	 */<\/span><\/div>	window<\/span>.<\/span>include<\/span> =<\/span> function<\/span> (<\/span>file<\/span>)<\/span> {<\/span><\/div>		// Variable declarations<\/span><\/div>		var<\/span> i<\/span>,<\/span> il<\/span>,<\/span> name<\/span>,<\/span> request<\/span>,<\/span> wrapper<\/span>;<\/span><\/div> <\/div>		// Get file name and check on same domain<\/span><\/div>		name<\/span> =<\/span> getBaseName<\/span>(<\/span>file<\/span>);<\/span><\/div> <\/div>		// If file has been loaded, don't load it again<\/span><\/div>		for<\/span> (<\/span>i<\/span> =<\/span> 0<\/span>,<\/span> il<\/span> =<\/span> loaded<\/span>.<\/span>length<\/span>;<\/span> i<\/span> <<\/span> il<\/span>;<\/span> i<\/span>++<\/span>)<\/span> {<\/span><\/div>			if<\/span> (<\/span>name<\/span> ===<\/span> loaded<\/span>[<\/span>i<\/span>])<\/span> {<\/span><\/div>				return<\/span> true<\/span>;<\/span><\/div>			}<\/span><\/div>		}<\/span><\/div> <\/div>		// Download script<\/span><\/div>		request<\/span> =<\/span> getHttpObject<\/span>();<\/span><\/div>		if<\/span> (<\/span>request<\/span>)<\/span> {<\/span><\/div>			request<\/span>.<\/span>open<\/span>(<\/span>"GET"<\/span>,<\/span> file<\/span>,<\/span> false<\/span>);<\/span><\/div>			request<\/span>.<\/span>send<\/span>(<\/span>null<\/span>);<\/span><\/div>		}<\/span> else<\/span> {<\/span><\/div>			throw<\/span> new<\/span> Error<\/span>(<\/span>"Couldn't create HTTP object."<\/span>);<\/span><\/div>		}<\/span><\/div> <\/div>		// Eval script in anonymous scope to protect global namespace<\/span><\/div>		wrapper<\/span> =<\/span> "(function () {"<\/span> +<\/span> request<\/span>.<\/span>responseText<\/span> +<\/span> "})();"<\/span>;<\/span><\/div>		try<\/span> {<\/span>	// Check for exceptions in script<\/span><\/div>			eval<\/span>(<\/span>wrapper<\/span>);<\/span><\/div>		}<\/span> catch<\/span> (<\/span>e<\/span>)<\/span> {<\/span><\/div>			throw<\/span> new<\/span> Error<\/span>(<\/span>"Exceptions thrown in "<\/span> +<\/span> name<\/span> +<\/span> ": "<\/span> +<\/span> e<\/span>.<\/span>message<\/span>);<\/span><\/div>		}<\/span><\/div>		loaded<\/span>.<\/span>push<\/span>(<\/span>name<\/span>);<\/span>	// Record that file has been loaded<\/span><\/div> <\/div>		return<\/span> true<\/span>;<\/span><\/div>	};<\/span><\/div> <\/div>})();<\/span><\/div><\/pre><\/div>\n          \n        <\/div>\n\n        \n          view raw<\/a>\n          include.js<\/a>\n          This Gist<\/a> brought to you by GitHub<\/a>.\n        <\/div>\n      <\/div>\n    \n  \n<\/div>\n')