<!-- ImageReady Preload Script (main_nav.psd) -->
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) {
		main_nav_01_over = newImage("/images/nav/home_f2.gif");
		main_nav_02_over = newImage("/images/nav/auctions_f2.gif");
		main_nav_03_over = newImage("/images/nav/information_f2.gif");
		main_nav_04_over = newImage("/images/nav/register_f2.gif");
		preloadFlag = true;
	}
}
<!-- End Preload Script -->