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) {
		nnav_outdoorfireplaces_over = newImage("image/nnav-outdoorfireplaces-over.gif");
		nnav_findadealer_over = newImage("image/nnav-findadealer-over.gif");
		nnav_bbqisland_nnav_findadealer_over = newImage("image/nnav-bbqisland-nnav-findadealer-over.gif");
		nnav_bbqisland_over = newImage("image/nnav-bbqisland-over.gif");
		nnav_calendar_over = newImage("image/nnav-calendar-over.gif");
		nnav_faqs_over = newImage("image/nnav-faqs-over.gif");
		nnav_aboutus_over = newImage("image/nnav-aboutus-over.gif");
		nnav_contact_over = newImage("image/nnav-contact-over.gif");
		preloadFlag = true;
	}
}