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) {
		about_home_over = newImage("images/about-home_over.gif");
		about_classes_over = newImage("images/about-classes_over.gif");
		about_over = newImage("images/about-over.gif");
		performance_photo_over = newImage("images/performance-photo_over.gif");
		performance_fdalinks_over = newImage("images/performance-fdalinks_over.gif");
		performance_over = newImage("images/performance-over.gif");
		home_over = newImage("images/home-over.gif");
		home_classes_over = newImage("images/home-classes_over.gif");
		home_about_over = newImage("images/home-about_over.gif");
		classes_over = newImage("images/classes-over.gif");
		classes_about_over = newImage("images/classes-about_over.gif");
		photo_over = newImage("images/photo-over.gif");
		photo_performance_over = newImage("images/photo-performance_over.gif");
		enroll_photo_over = newImage("images/enroll-photo_over.gif");
		enroll_over = newImage("images/enroll-over.gif");
		enroll_performance_over = newImage("images/enroll-performance_over.gif");
		preloadFlag = true;
	}
}