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) {
			nav_home_over = newImage("/images/nav-home-over.jpg");
			nav_news_over = newImage("/images/nav-news-over.jpg");
			nav_schedule_over = newImage("/images/nav-schedule-over.jpg");
			nav_drivers_over = newImage("/images/nav-home-over.jpg");
			nav_team_over = newImage("/images/nav-team-over.jpg");
			nav_rides_over = newImage("/images/nav-rides-over.jpg");
			nav_partners_over = newImage("/images/nav-partners-over.jpg");
			nav_pictures_over = newImage("/images/nav-pictures-over.jpg");
			nav_contact_over = newImage("/images/nav-contact-over.jpg");
			rs_logo_over = newImage("/images/rs-logo-over.jpg");
			spotlight_driver_over = newImage("/images/spotlight-driver-over.jpg");
			spotlight_photos_over = newImage("/images/spotlight-photos-over.jpg");
			spotlight_contact_over = newImage("/images/spotlight-contact-over.jpg");
			
			preloadFlag = true;
		}
	}