var preloadFlag = false;

//function preloadImages() {
	if (document.images) {
		login_over = newImage("./images/common/loginRO.gif");
		contactus_over = newImage("./images/common/contactRO.gif");
		
		preloadFlag = true;
	}
//}

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];
		}
	}
}