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) {
		lights_peach_over = newImage("images/lights-peach_over.gif");
		lights_yellow_over = newImage("images/lights-yellow_over.gif");
		lights_green_over = newImage("images/lights-green_over.gif");
		lights_blue_over = newImage("images/lights-blue_over.gif");
		lavender_over = newImage("images/lavender-over.gif");
		peach_over = newImage("images/peach-over.gif");
		yellow_over = newImage("images/yellow-over.gif");
		green_over = newImage("images/green-over.gif");
		blue_over = newImage("images/blue-over.gif");
		preloadFlag = true;
	}
}