function openNewWindow(URLtoOpen, windowName, windowFeatures) {
newWindow=window.open(URLtoOpen, windowName, windowFeatures); }

function popup1(vurl,vw,vh) {
 checkpopup=window.open(vurl,'','toolbar=no,location=no,directories=no,menubar=no,status=no,scrollbars=no,resizable=no,width='+vw+',height='+vh);
}

function popup2(vurl,vw,vh) {
 checkpopup=window.open(vurl,'','toolbar=no,location=no,directories=no,menubar=no,status=no,scrollbars=yes,resizable=no,width='+vw+',height='+vh);
}

<!--
function popup(theURL,winName,htmlName,features) { 
	winName=window.open(theURL,htmlName,features);
	//eval(winName+"=window.open('"+theURL+"','"+htmlName+"','"+features+"')");
	}
//-->