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/nav/home-over.gif");
		visit_over = newImage("images/nav/visit-over.gif");
		join_over = newImage("images/nav/join-over.gif");
		order_over = newImage("images/nav/order-over.gif");
		awards_join_over = newImage("images/nav/awards-join_over.gif");
		awards_over = newImage("images/nav/awards-over.gif");
		contact_join_over = newImage("images/nav/contact-join_over.gif");
		contact_over = newImage("images/nav/contact-over.gif");
		more_over = newImage("images/nav_main/recipes_and_more.gif");
		preloadFlag = true;
	}
}