<!-- ImageReady Preload Script (header.psd) -->
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.gif");
		search_home_over = newImage("images/search-home_over.gif");
		search_over = newImage("images/search-over.gif");
		about_search_over = newImage("images/about-search_over.gif");
		about_over = newImage("images/about-over.gif");
		CustomerService_over = newImage("images/CustomerService-over.gif");
		cart_CustomerService_over = newImage("images/cart-CustomerService_over.gif");
		cart_over = newImage("images/cart-over.gif");
		Checkout_home_over = newImage("images/Checkout-home_over.gif");
		Checkout_cart_over = newImage("images/Checkout-cart_over.gif");
		Checkout_over = newImage("images/Checkout-over.gif");
		preloadFlag = true;
	}
}
<!-- End Preload Script -->