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) {
		adult_over = newImage("images/adult-over.gif");
		black_over = newImage("images/black-over.gif");
		christian_over = newImage("images/christian-over.gif");
		hispanic_over = newImage("images/hispanic-over.gif");
		asian_over = newImage("images/asian-over.gif");
		local_dating_over = newImage("images/local-over.gif");
		preloadFlag = true;
	}
}