blank = new Image();
		blank.src = "images/blank.gif";

		roll = new Image();
		roll.src = "images/roll3.gif";

		function imgRollOver (imgName, description)
		{
			var img = imgName + "Roll";
			document.images[imgName+"Roll"].src = "images/roll3.gif";
			window.status=description;
		}
		function imgRollOff(imgName)
		{
			var img = imgName + "Roll";
			document.images[imgName+"Roll"].src = "images/blank.gif";
			window.status="";
		}