var QueryLoader = {
	/*
	 * QueryLoader		Preload your site before displaying it!
	 * Author:			Gaya Kessler
	 * Date:			23-09-09
	 * URL:				http://www.gayadesign.com
	 * Version:			1.0
	 * 
	 * A simple jQuery powered preloader to load every image on the page and in the CSS
	 * before displaying the page to the user.
	 */
	
	overlay: "",
	loadBar: "",
	preloader: "",
	items: new Array(),
	hashItems: new Object(),
	doneStatus: 0,
	doneNow: 0,
	doneComplite: 0,
	selectorPreload: "body",
	ieLoadFixTime: 2000,
	ieTimeout: "",
	width: 900,
	baseUrl: "",
	loadingMessage: "",
	
	onComplete: "",
		
	init: function() {
		if (navigator.userAgent.match(/MSIE (\d+(?:\.\d+)+(?:b\d*)?)/) == "MSIE 6.0,6.0") {
			//break if IE6			
			return false;
		}
		if (QueryLoader.selectorPreload == "body") {
			QueryLoader.spawnLoader();
			QueryLoader.getImages(QueryLoader.selectorPreload);
			QueryLoader.createPreloading();
		} else {
			$(document).ready(function() {
				QueryLoader.spawnLoader();
				QueryLoader.getImages(QueryLoader.selectorPreload);
				QueryLoader.createPreloading();
			});
		}
		
		//help IE drown if it is trying to die :)
		QueryLoader.ieTimeout = setTimeout("QueryLoader.ieLoadFix()", QueryLoader.ieLoadFixTime);
	},
	
	ieLoadFix: function() {
		var ie = navigator.userAgent.match(/MSIE (\d+(?:\.\d+)+(?:b\d*)?)/);
		if (ie && ie[0].match("MSIE")) {
			while ((100 / QueryLoader.doneStatus) * QueryLoader.doneNow < 100) {
				QueryLoader.imgCallback();
			}
		}
	},
	
	imgCallback: function() {
		QueryLoader.doneNow ++;
		QueryLoader.animateLoader();
	},
	
	getImages: function(selector) {
		var urlcheck = new RegExp('^'+QueryLoader.baseUrl, "i");
		var fullurlcheck = new RegExp('^http://', "i");		
		
		var everything = $(selector).find("*:not(script)").each(function() {
			var url = "";
			
			if ($(this).css("background-image") != "none") {
				var url = $(this).css("background-image");
			} else if (typeof($(this).attr("src")) != "undefined" && $(this).attr("tagName").toLowerCase() == "img") {
				var url = $(this).attr("src");
			}
			
			if (url) {
			
				url = url.replace("url(\"", "");
				url = url.replace("url(", "");
				url = url.replace("\")", "");
				url = url.replace(")", "");
				
				if (url.length > 0) {
					var dup=0;
					for (j=0,nj=QueryLoader.items.length; j<nj; j++)
						if (QueryLoader.items[j] == url) { dup=1; break; }
					if (!dup) {						
						if (QueryLoader.baseUrl && (fullurlcheck.test(url)) && !urlcheck.test(url)) no=1;
						else QueryLoader.items.push(url);						
					}
				}			
			}
		});
	},
	
	createPreloading: function() {
		QueryLoader.preloader = $("<div></div>").appendTo(QueryLoader.selectorPreload);
		$(QueryLoader.preloader).css({
			height: 	"0px",
			width:		"0px",
			overflow:	"hidden"
		});
		
		var length = QueryLoader.items.length; 
		QueryLoader.doneStatus = length;
		QueryLoader.doneComplite = 0;
				
		for (var i = 0; i < length; i++) {
			var imgLoad = $("<img></img>");
			$(imgLoad).attr("src", QueryLoader.items[i]);
			$(imgLoad).unbind("load");
			$(imgLoad).bind("load", function() {
				QueryLoader.imgCallback();
			});
			$(imgLoad).appendTo($(QueryLoader.preloader));
		}
	},

	spawnLoader: function() {
		if (QueryLoader.selectorPreload == "body") {
			var height = $(window).height();
			var width = $(window).width();
			var position = "fixed";
			
			width = "100%";
			
			//$('body,html').css('overflow','hidden'); 
		} else {
			var height = $(QueryLoader.selectorPreload).outerHeight();
			var width = $(QueryLoader.selectorPreload).outerWidth() + "px";
			var position = "absolute";
		}
		var left = $(QueryLoader.selectorPreload).offset()['left'];
		var top = $(QueryLoader.selectorPreload).offset()['top'];
		
		QueryLoader.width = width;
		
		QueryLoader.overlay = $('.QOverlay');
		if ( ! QueryLoader.overlay ) {		
			QueryLoader.overlay = $("<div></div>").appendTo($(QueryLoader.selectorPreload));
			$(QueryLoader.overlay).addClass("QOverlay");
		}
		$(QueryLoader.overlay).css({
			position: position,
			top: top,
			left: left,
			width: width,
			height: height + "px"
		});
		
		QueryLoader.loadBar = $("<div></div>").appendTo($(QueryLoader.overlay));
		$(QueryLoader.loadBar).addClass("QLoader");
		
		$(QueryLoader.loadBar).css({
			position: "relative",
			top: "50%",
			left: "50%"
//			width: "auto"
		});
	},
	
	animateLoader: function() {
		
		if (QueryLoader.doneComplite) return;
		
		var perc = (100 / QueryLoader.doneStatus) * QueryLoader.doneNow;
		if (perc > 95) {
			//$(QueryLoader.loadBar).text('');
			QueryLoader.doneComplite = 1;
			QueryLoader.doneLoad();
		} else {
			$(QueryLoader.loadBar).text(QueryLoader.loadingMessage+" "+Math.ceil(perc)+"%");
		}		
	},
	
	doneLoad: function() {
		//prevent IE from calling the fix
		clearTimeout(QueryLoader.ieTimeout);
		
		if (QueryLoader.onComplete && jQuery.isFunction(QueryLoader.onComplete)) QueryLoader.onComplete();

		$(QueryLoader.overlay).animate({
			height:0, top:"50%"
		}, 1000, function() {
			$(QueryLoader.overlay).remove();
			//if (QueryLoader.selectorPreload == "body") $('body,html').css('overflow','auto');			
		});
		
		$(QueryLoader.preloader).remove();	

	}
}