/*
 * includeMany 1.2.2
 *
 * Copyright (c) 2009 Arash Karimzadeh (arashkarimzadeh.com)
 * Licensed under the MIT (MIT-LICENSE.txt)
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Date: Dec 03 2009
 */


( function($) {
	$.chainclude = function(urls, finaly) {
		var onload = function(callback, data) {
			if (typeof urls.length != "undefined") {
				if (urls.length == 0) {
					return $.isFunction(finaly) ? finaly(data) : null
				}
				urls.shift();
				return $.chainclude.load(urls, onload)
			}
			for ( var item in urls) {
				urls[item](data);
				delete urls[item];
				var count = 0;
				for ( var i in urls) {
					count++
				}
				return (count == 0) ? $.isFunction(finaly) ? finaly(data)
						: null : $.chainclude.load(urls, onload)
			}
		};
		$.chainclude.load(urls, onload)
	};
	$.chainclude.load = function(urls, onload) {
		if (typeof urls == "object" && typeof urls.length == "undefined") {
			for ( var item in urls) {
				return $.include.load(item, onload, urls[item].callback)
			}
		}
		urls = $.makeArray(urls);
		$.include.load(urls[0], onload, null)
	};
	$.include = function(urls, finaly) {
		var luid = $.include.luid++;
		var onload = function(callback, data) {
			if ($.isFunction(callback)) {
				callback(data)
			}
			if (--$.include.counter[luid] == 0 && $.isFunction(finaly)) {
				finaly()
			}
		};
		if (typeof urls == "object" && typeof urls.length == "undefined") {
			$.include.counter[luid] = 0;
			for ( var item in urls) {
				$.include.counter[luid]++
			}
			return $.each(urls, function(url, callback) {
				$.include.load(url, onload, callback)
			})
		}
		urls = $.makeArray(urls);
		$.include.counter[luid] = urls.length;
		$.each(urls, function() {
			$.include.load(this, onload, null)
		})
	};
	$.extend($.include, {
		luid : 0,
		counter : [],
		load : function(url, onload, callback) {
			url = url.toString();
			if ($.include.exist(url)) {
				return onload(callback)
			}
			if (/.css$/.test(url)) {
				$.include.loadCSS(url, onload, callback)
			} else {
				if (/.js$/.test(url)) {
					$.include.loadJS(url, onload, callback)
				} else {
					$.get(url, function(data) {
						onload(callback, data)
					})
				}
			}
		},
		loadCSS : function(url, onload, callback) {
			var css = document.createElement("link");
			css.setAttribute("type", "text/css");
			css.setAttribute("rel", "stylesheet");
			css.setAttribute("href", "" + url);
			$("head").get(0).appendChild(css);
			$.browser.msie ? $.include.IEonload(css, onload, callback)
					: onload(callback)
		},
		loadJS : function(url, onload, callback) {
			var js = document.createElement("script");
			js.setAttribute("type", "text/javascript");
			js.setAttribute("src", "" + url);
			$.browser.msie ? $.include.IEonload(js, onload, callback)
					: js.onload = function() {
						onload(callback)
					};
			$("head").get(0).appendChild(js)
		},
		IEonload : function(elm, onload, callback) {
			elm.onreadystatechange = function() {
				if (this.readyState == "loaded"
						|| this.readyState == "complete") {
					onload(callback)
				}
			}
		},
		exist : function(url) {
			var fresh = false;
			$("head script").each( function() {
				if (/.css$/.test(url) && this.href == url) {
					return fresh = true
				} else {
					if (/.js$/.test(url) && this.src == url) {
						return fresh = true
					}
				}
			});
			return fresh
		}
	})
})(jQuery);