(function($){
	function isExternalScript(url){ 
		return /(http|https):\/\//.test(url);
	};
	$.extend({
		requireConfig : {
			routeJs		: '',
			routeCss	: ''
		},
		queue : [],
		pending : null,
		requireJs : function(scriptUrl, callback, opts, obj, scope)
		{
			if(opts != undefined || opts == null){
				$.extend($.requireConfig, opts);
			}
			
			var _request = {
				url 		: scriptUrl,
				callback 	: callback,
				opts		: opts,
				obj 		: obj,
				scope		: scope
			}
			
			if(this.pending)
			{
				this.queue.push(_request);
				return;
			}
			
			this.pending = _request;
			
			var _this		= this;
			var _url		= (isExternalScript(scriptUrl)) ? scriptUrl : $.requireConfig.routeJs + scriptUrl;
			var _head 		= document.getElementsByTagName('head')[0];
			var _scriptTag 	= document.createElement('script');
				
				// Firefox, Opera
				$(_scriptTag).bind('load', function(){
					_this.requestComplete();
				});
				
				// IE
				_scriptTag.onreadystatechange = function(){
					if(this.readyState === 'loaded' || this.readyState === 'complete'){
						_this.requestComplete();
					}
				}
				_scriptTag.type = "text/javascript";
				_scriptTag.src = _url;
				
				_head.appendChild(_scriptTag);
		},
		requestComplete : function()
		{
			if(this.pending.callback){
				if(this.pending.obj){
					if(this.pending.scope){
						this.pending.callback.call(this.pending.obj);
					} else {
						this.pending.callback.call(window, this.pending.obj);
					}
				} else {
					this.pending.callback.call();
				}
			}
			this.pending = null;
			if(this.queue.length > 0)
			{
				var request = this.queue.shift();
				this.requireJs(request.url, request.callback, request.opts, request.obj, request.scope);
			}
		},
		requireCss : function(styleUrl){
			if(document.createStyleSheet){
				document.createStyleSheet($.requireConfig.routeCss + styleUrl);
			}
			else {
				var styleTag = document.createElement('link');
				$(styleTag).attr({
					href	: $.requireConfig.routeCss + styleUrl,
					type	: 'text/css',
					media 	: 'screen',
					rel		: 'stylesheet'
				}).appendTo($('head').get(0));
			}
		}
	})
})(jQuery);