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_page_over = newImage("images/home-page-over.jpg");
		new_products_over = newImage("images/new-products-over.jpg");
		specials_over = newImage("images/specials-over.jpg");
		my_account_over = newImage("images/my-account-over.jpg");
		contact_us_over = newImage("images/contact-us-over.jpg");
		preloadFlag = true;
	}
}