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) {
			if (changeImages.arguments[i] == pagetype) {
				document[changeImages.arguments[i]].src = "images/" + changeImages.arguments[i] + "-over.gif";
			} else {	
				document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
			}
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.gif");
		events_over = newImage("images/events-over.gif");
		news_over = newImage("images/news-over.gif");
		about_over = newImage("images/about-over.gif");
		involved_over = newImage("images/involved-over.gif");
		id500club_over = newImage("images/500club-over.gif");
		contact_over = newImage("images/contact-over.gif");
		preloadFlag = true;
		changeImages(pagetype, (pagetype+"-over.gif"));
	}
}