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 (navDir) {

	if (document.images) {

		logo_over = newImage(navDir + "logo-over.gif");

		donate_over = newImage(navDir + "donate-over.gif");

		story_over = newImage(navDir + "story-over.gif");

		genocide_over = newImage(navDir + "genocide-over.gif");

		scholarships_over = newImage(navDir + "scholarships-over.gif");

		resources_over = newImage(navDir + "resources-over.gif");

		support_over = newImage(navDir + "support-over.gif");

		contact_over = newImage(navDir + "contact-over.gif");

		preloadFlag = true;
	}
}