var popUpWin=0;
function popUpWindow(URLStr, left, top, width, height) {
  if(popUpWin) {
	  if(!popUpWin.closed) popUpWin.close();
  }
  var winleft = (screen.width - width) / 2;
  var winUp = (screen.height - height) / 2;
  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width='+width+',height='+height+',left='+winleft+', top='+winUp+',screenX='+winleft+',screenY='+winUp+'');
}