var newWindow = null;
function popWindow(theURL,w,h,myname) {
var winl = (screen.width-w)/2;
var wint = (screen.height-h)/2;
var settings='height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=no,toolbar=no'

newWindow = window.open(theURL,myname,settings);
if(parseInt(navigator.appVersion) >= 4){newWindow.window.focus();}
}