function pop(windowURL, theWidth, theHeight)
{
var winl = (screen.width - theWidth) / 2;
var wint = (screen.height - theHeight) / 2;
new_window = window.open(windowURL,'popWindow','toolbar=no,menubar=no,location=no,personalbar=no,scrollbars=no,status=no,directories=no,resizable=off, width='+theWidth+', height='+theHeight+', top='+wint+', left='+winl); 
new_window.resizeTo(theWidth,theHeight);
new_window.focus();
}