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) {
		EIS_over = newImage("http://www.ochealthinfo.com/assets/EIS-small.gif");
		english_over = newImage("images/english-over.jpg");
		vietnamese_over = newImage("images/vietnamese-over.jpg");
		espanol_over = newImage("images/espanol-over.jpg");
		tot_over = newImage("images/tot-over.jpg");
		youth_over = newImage("images/youth-over.jpg");
		tfc_over = newImage("images/tfc-over.jpg");
		ab846_over = newImage("images/ab846-over.jpg");
		
		preloadFlag = true;
	}
}