$body = $(document).find("body");
$backdrop =$(document).find("backdrop");
var site_width = 1280;
var site_height = 768;

var window_width = $(window).width();
var window_height = $(window).height();

function zoom() {
	
	window_width = $(window).width();
	window_height = $(window).height();
	
	var zoom_x = window_width / site_width;
	var zoom_y = window_height / site_height;
	var zoomfactor = 1;
	
	if (zoom_x > zoom_y) {
	
		zoomfactor = zoom_y;
		nudge_x = parseInt((window_width - (site_width * zoomfactor)) / 2);
		$body.css({"left":nudge_x});
	}
	
	else {
	
		zoomfactor = zoom_x;
	
	}
	
	$pagewrap = $(document).find("#page-wrap");
	$pagewrap.css({"zoom":zoomfactor});
	$pagewrap.css({"-moz-transform":"scale(" + (zoomfactor * .98) + ")"});
	

	if (navigator.platform.indexOf("iPhone") != -1) {

		$body.css({"background-size":window_width + "px " + (window_height + 70) + "px"});
		$backdrop.css({"background-height":(window_height + 70) + "px"});
		window.scrollTo(0, 1);
		
	
	}
	
	else {

		$body.css({"background-size":window_width + "px " + window_height + "px"});
	
	}
	
}