function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.jpg");
		about_over = newImage("images/about-over.jpg");
		specials_over = newImage("images/specials-over.jpg");
		coupons_over = newImage("images/coupons-over.jpg");
		tips_over = newImage("images/tips-over.jpg");
		contest_over = newImage("images/contest-over.jpg");
		contact_over = newImage("images/contact-over.jpg");
		dig_cam_over = newImage("images/dig_cam-over.jpg");
		id35mm_over = newImage("images/35mm-over.jpg");
		dig_serv_over = newImage("images/dig_serv-over.jpg");
		lab_serv_over = newImage("images/lab_serv-over.jpg");
		framing_over = newImage("images/framing-over.jpg");
		preloadFlag = true;
	}
}