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) {
		contact_over = newImage("images/nav/contact-over.gif");
		locations_over = newImage("images/nav/locations-over.gif");
		pro_over = newImage("images/nav/pro-over.gif");
		ser_over = newImage("images/nav/ser-over.gif");
		abo_over = newImage("images/nav/abo-over.gif");
		whi_over = newImage("images/nav/whi-over.gif");
		store_over = newImage("images/nav/store-over.gif");
		faq_over = newImage("images/nav/faq-over.gif");
		faq_over018 = newImage("images/nav/faq-over-18.gif");
		preloadFlag = true;
	}
}