var popUpWin = 0;

function popUpWindow(URLStr, left, top, width, height) {
	if(popUpWin) {
    if(!popUpWin.closed) popUpWin.close();
  }

  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width='+width+',height='+height);
}