function openPopupWindow (formURL, width, height)
{
  var Left = (screen.width - width) / 2;
  var Top = (screen.height - height) / 2;
  window.open(formURL,"","toolbar=0, scrollbars=no,location=0,status=0,menubar=0,width="+width+",height="+height+",border=1,resizable=yes,left="+Left+",top="+Top);  
};