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("nav/home-over.gif");
		aboutus_over = newImage("nav/aboutus-over.gif");
		artposter_over = newImage("nav/artposter-over.gif");
		awards_over = newImage("nav/awards-over.gif");
		contact_over = newImage("nav/contact-over.gif");
		donate_over = newImage("nav/donate-over.gif");
		events_over = newImage("nav/events-over.gif");
		members_over = newImage("nav/members-over.gif");
		scholarship_over = newImage("nav/scholarship-over.gif");
		preloadFlag = true;
	}
}