function FullScreenBackground(theItem,theContainer){
	var winWidth=$(window).width();
	var winHeight=$(window).height();
	var imageWidth=$(theItem).width();
	var imageHeight=$(theItem).height();
	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);
	};
	$(theContainer).css("width",winWidth-($theBorder*2));
	$(theContainer).css("height",winHeight-($theBorder*2));
	$(theItem).css("margin-left",(winWidth- $(theItem).width())/2);
	$(theItem).css("margin-top",(winHeight- $(theItem).height())/2);
}