// JavaScript Document
if(document.images) {

	zoom0On = new Image();
	zoom0On.src = "../images/zoomroll.gif";
	zoom0Off = new Image();
	zoom0Off.src = "../images/zoom.gif";
	zoom1On = new Image();
	zoom1On.src = "../images/zoomroll.gif";
	zoom1Off = new Image();
	zoom1Off.src = "../images/zoom.gif";
	zoom2On = new Image();
	zoom2On.src = "../images/zoomroll.gif";
	zoom2Off = new Image();
	zoom2Off.src = "../images/zoom.gif";
	zoom3On = new Image();
	zoom3On.src = "../images/zoomroll.gif";
	zoom3Off = new Image();
	zoom3Off.src = "../images/zoom.gif";
	zoom4On = new Image();
	zoom4On.src = "../images/zoomroll.gif";
	zoom4Off = new Image();
	zoom4Off.src = "../images/zoom.gif";
	zoom5On = new Image();
	zoom5On.src = "../images/zoomroll.gif";
	zoom5Off = new Image();
	zoom5Off.src = "../images/zoom.gif";
	zoom6On = new Image();
	zoom6On.src = "../images/zoomroll.gif";
	zoom6Off = new Image();
	zoom6Off.src = "../images/zoom.gif";
	zoom7On = new Image();
	zoom7On.src = "../images/zoomroll.gif";
	zoom7Off = new Image();
	zoom7Off.src = "../images/zoom.gif";
	zoom8On = new Image();
	zoom8On.src = "../images/zoomroll.gif";
	zoom8Off = new Image();
	zoom8Off.src = "../images/zoom.gif";
}

// functions for swapping the respective images. 
function img_on(image_name) {
	if (document.images){
		document[image_name].src = eval(image_name + "On.src");
	}
}

function img_off(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "Off.src");
	}
}