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) {
		onautos = newImage("images/onautos.gif");
		onbuy = newImage("images/onbuy.gif");
		oninsurance = newImage("images/ontag.gif");
		oninsurance = newImage("images/oninsurance.gif");
		onpenndot = newImage("images/onpenndot.gif");
		oncontact = newImage("images/oncontact.gif");
		onabout = newImage("images/onabout.gif");
		onlinks = newImage("images/onlinks.gif");
		preloadFlag = true;
	}
}