var popUpWin=0;
function popUpWindow(URLStr)
{
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }
  popUpWin = open(URLStr, 'Print', 'toolbar=no,location=no,directories=no,status=no,menub ar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width=806,height=650,left=0, top=0,screenX=0,screenY=0');
  }