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_ = newImage("/images/rollover/home_over.gif");
		about = newImage("/images/rollover/about_over.gif");
		programs = newImage("/images/rollover/programs_over.gif");
		learn = newImage("/images/rollover/learn_over.gif");
		news_events = newImage("/images/rollover/news_events_over.gif");
		projects = newImage("/images/rollover/projects_over.gif");
		alumni = newImage("/images/rollover/alumni_over.gif");
		links = newImage("/images/rollover/links_over.gif");
		search = newImage("/images/rollover/search_over.gif");
		preloadFlag = true;
	}
}