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) {
		home_over = newImage("images/home-over.jpg");
		aboutus_over = newImage("images/about-us-over.jpg");
		visit_over = newImage("images/visit-over.jpg");
		orthodontics_over = newImage("images/orthodontics-over.jpg");
		braces_over = newImage("images/braces-over.jpg");
		beforeandafter_over = newImage("images/before-and-after-over.jpg");
		contactus_over = newImage("images/contact-us-over.jpg");
		comments_over = newImage("images/comments-over.jpg");
		referrals_over = newImage("images/referrals-over.jpg");
		forchildren_over = newImage("images/for-children-over.jpg");
		treatment_over = newImage("images/treatment-over.jpg");
		adult_over = newImage("images/adult-over.jpg");
		common_over = newImage("images/common-over.jpg");
		resources_over = newImage("images/resources-over.jpg");
		meetmaness_over = newImage("images/meet-maness-over.jpg");
		team_over = newImage("images/team-over.jpg");
		tour_over = newImage("images/tour-over.jpg");
		types_over = newImage("images/types-over.jpg");
		invisalign_over = newImage("images/invisalign-over.jpg");
		damon_over = newImage("images/damon-over.jpg");
		diagram_over = newImage("images/diagram-over.jpg");
		faqs_over = newImage("images/faqs-over.jpg");
		retainers_over = newImage("images/retainers-over.jpg");
		preloadFlag = true;
	}
}