<!-- Preload Script -->
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) {
		img = newImage(getAbsolute("/re-group/images/mnuHome_over.gif"));		
		img = newImage(getAbsolute("/re-group/images/mnuSiteMap_over.gif"));				
		img = newImage(getAbsolute("/re-group/images/mnuContactUs_over.gif"));		
		img = newImage(getAbsolute("/re-group/images/hdr_gobtn_over.gif"));
		img = newImage(getAbsolute("/re-group/images/more_over.gif"));
		for (i=0; i<menuItems.length; i++) {
			if (menuItems[i].imageOver!="") {
				img = newImage(getAbsolute("/re-group/images/") + menuItems[i].imageOver);
			}
		}
		preloadFlag = true;
	}
}

function doSearch() {
	if (document.main_form.query.value.length == 0) {
		alert("Please enter one or more keywords in the search box");
	} else {
		document.main_form.submit();
	}
}
<!-- End Preload Script -->