cartnew = new Image();
cartnew.src="images/cartnew.jpg";
cartnewover = new Image();
cartnewover.src="images/cartnewover.jpg";

function rollOn(tab,onPage){
	if (document.images){
		if(tab=="cart"){
			document.cartnew.src=cartnewover.src;
		}
	}
}
function rollOff(tab,onPage){
	if (document.images){
		if(tab=="cart"){
			document.cartnew.src=cartnew.src;
		}
	}
}