function FullScreenBackground(theItem,w,h){
	var winWidth = $(window).width();
	var winHeight = $(window).height();
	var imageWidth = w;
	var imageHeight = h;
	var picHeight = imageHeight / imageWidth;
	var picWidth = imageWidth / imageHeight;
	if ((winHeight / winWidth) < picHeight) {
		$(theItem).css("width",winWidth);
		$(theItem).css("height",picHeight*winWidth);
	} else {
		$(theItem).css("height",winHeight);
		$(theItem).css("width",picWidth*winHeight);
	}
	$(theItem).css("margin-left",winWidth / 2 - $(theItem).width() / 2);
//	$(theItem).css("margin-top",winHeight / 2 - $(theItem).height() / 2);
}