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) {		wc = newImage("images/wcbtn2.gif");		tl = newImage("images/tlbtn2.gif");		gr = newImage("images/grbtn2.gif");		rh = newImage("images/rhbtn2.gif");		td = newImage("images/tdbtn2.gif");		fa = newImage("images/fabtn2.gif");		wfs = newImage("images/wfsbtn2.gif");		dr = newImage("images/drbtn2.gif");		rs = newImage("images/rsbtn2.gif");		preloadFlag = true;	}}function popup(daurl) {	window.open(daurl,'popup','width=640,height=500,scrollbars=no,menubar=0,resizable=no');}