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) {
		information_over = newImage("images/information-over.jpg");
		subdivision_over = newImage("images/subdivision-over.jpg");
		design_guidelines_over = newImage("images/design_guidelines-over.jpg");
		lot_prices_over = newImage("images/lot_prices-over.jpg");
		image_gallery_over = newImage("images/image_gallery-over.jpg");
		contact_over = newImage("images/contact-over.jpg");
		preloadFlag = true;
	}
}