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) {
		what_is_melem_over = newImage("/images/what_is_melem-over.jpg");
		what_is_melem_down = newImage("/images/what_is_melem-down.jpg");
		melem_for_me_down = newImage("/images/melem_for_me-down.jpg");
		melem_for_me_over = newImage("/images/melem_for_me-over.jpg");
		order_now_over = newImage("/images/order_now-over.jpg");
		order_now_down = newImage("/images/order_now-down.jpg");
		retailers_over = newImage("/images/retailers-over.jpg");
		retailers_down = newImage("/images/retailers-down.jpg");
		healthcare_over = newImage("/images/healthcare-over.jpg");
		healthcare_down = newImage("/images/healthcare-down.jpg");
		contact_us_over = newImage("/images/contact_us-over.jpg");
		contact_us_down = newImage("/images/contact_us-down.jpg");
		preloadFlag = true;
	}
}

preloadImages();