abouton = new Image();
	abouton.src = "images/homepage/about_roll.gif"
	aboutoff = new Image();
	aboutoff.src = "images/homepage/about.gif"
	
	comon = new Image();
	comon.src = "images/homepage/homenavtoprght_roll.jpg"
	comoff = new Image();
	comoff.src = "images/homepage/homenavtoprght.jpg"
	
	reson = new Image();
	reson.src = "images/homepage/homenavtopleft_roll.jpg"
	resoff = new Image();
	resoff.src = "images/homepage/homenavtopleft.jpg"
	
	saleon = new Image();
	saleon.src = "images/homepage/contact_roll.jpg"
	saleoff = new Image();
	saleoff.src = "images/homepage/contact.jpg"
	
	function preload(imgObj,imgSrc) {
		if (document.images) {
			eval(imgObj+' = new Image()')
			eval(imgObj+'.src = "images/homepage/'+imgSrc+'"')
		}
	}

	function imgOn(imgName) {
		document[imgName].src = eval(imgName + "on.src");
	}
	
	function imgOff(imgName) {
		document[imgName].src = eval(imgName + "off.src");
	}