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) {
				// for top menu
				menu_services_over = newImage("images/services-over.jpg");
				menu_financing_over = newImage("images/financing-over.jpg");
				menu_whatsnew_over = newImage("images/whatsnew-over.jpg");
				menu_faq_over = newImage("images/faq-over.jpg");
				menu_contactus_over = newImage("images/contactus-over.jpg");		
				// for left menu
				menu_home_over = newImage("images/home-over.jpg");
				menu_aboutus_over = newImage("images/aboutus-over.jpg");
				menu_awards_over = newImage("images/awards-over.jpg");
				menu_whatmakesdifferent_over = newImage("images/whatmakesdifferent-over.jpg");
				menu_photogallery_over = newImage("images/photogallery-over.jpg");
				menu_poolconstruction_over = newImage("images/poolconstruction-over.jpg");
				menu_lifestylewarranty_over = newImage("images/lifestylewarranty-over.jpg");
				menu_whatpeoplesaying_over = newImage("images/whatpeoplearesaying-over.jpg");
				preloadFlag = true;
			}
		}