//rollovers (P.S.)
function imgSwap(obj,pic) {
	document[obj].src = pic;
}

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) {
		top_univofmass_over = newImage("/images/top_univofmass-over.jpg");
		home_over = newImage("/images/home-over.jpg");
		edit_admins_over = newImage("/images/edit_admins-over.jpg");
		logout_over = newImage("/images/logout-over.jpg");
		top_amherst_over = newImage("/images/top_amherst-over.jpg");
		top_boston_over = newImage("/images/top_boston-over.jpg");
		top_dartmouth_over = newImage("/images/top_dartmouth-over.jpg");
		top_lowell_over = newImage("/images/top_lowell-over.jpg");
		top_medical_over = newImage("/images/top_medical-over.gif");
		preloadFlag = true;
	}
}