var bkg = function(){
//		$("html").css("visibility", "hidden");
		var h = $(window).height();
		var w = $(window).width();
//		alert(w+"/"+h);
		var img = "/images/";
		if(w>1700) img+="main_background_1920.jpg";
		else if(w>1600) img+="main_background_1700.jpg";
		else if(w>1440) img+="main_background_1600.jpg";
		else if(w>1280 && h>900) img+="main_background_1440_1050.jpg";
		else if(w>1280) img+="main_background_1440_900.jpg";
		else if(w>1160 && h>800) img+="main_background_1280_1024.jpg";
		else if(w>1160) img+="main_background_1280_800.jpg";
		else if(w>1024) img+="main_background_1160.jpg";
		else{
			img+="main_background_1024.jpg";
		}
		
		if(w<1025){
			$("#mtb1").css("margin", "22px 0px 0px 0px");
			$("#hmenu").css("padding", "36px 0px 0px 0px");
			$("#logo").css("margin", "5px 124px 0px 0px");
		}else{
			$("#mtb1").css("margin", "55px 0px 0px 0px");
			$("#hmenu").css("padding", "54px 0px 0px 0px");
			$("#logo").css("margin", "23px 124px 0px 0px");
		}
		
		img = ("url('"+img+"') top center no-repeat");
//		alert(img);
//		img = "#ff0000";
		$("body").css("background", img);
//		alert($("body").css("background"));
//		$("html").css("visibility", "visible");
//		alert($("body").css("background"));
	};
	
	
$(document).ready(bkg);
$(window).resize(bkg);