var popUpWin=0;
function popUpWindow(URLStr)
{
  if(popUpWin)
  {
    if(!popUpWin.closed) {
		popUpWin.close();
popUpWin=0;
		}
  } else {
  popUpWin = window.open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=250,height=100,left=0, top=0,screenX=0,screenY=0');
  }
}