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) {
		leftmenu_01_Home_over = newImage("images/leftmenu_01-Home_over.jpg");
		Home_over = newImage("images/Home-over.jpg");
		Meet_the_Doctor_over = newImage("images/Meet-the-Doctor-over.jpg");
		Patient_Information_over = newImage("images/Patient-Information-over.jpg");
		Dental_Implants_over = newImage("images/Dental-Implants-over.jpg");
		Dental_Implants_Patient_Information_over = newImage("images/Dental-Implants-Patient-Inf.jpg");
		Periodontal_Disease_over = newImage("images/Periodontal-Disease-over.jpg");
		Procedures_over = newImage("images/Procedures-over.jpg");
		Consequences_over = newImage("images/Consequences-over.jpg");
		FAQ_over = newImage("images/FAQ-over.jpg");
		FAQ_Links_over = newImage("images/FAQ-Links_over.jpg");
		Links_over = newImage("images/Links-over.jpg");
		Links_Contact_Us_over = newImage("images/Links-Contact-Us_over.jpg");
		Contact_Us_over = newImage("images/Contact-Us-over.jpg");
		preloadFlag = true;
	}
}