var popUpWin=0;
function popUpWindow(URLStr, winName, left, top, width, height){
  if(window[winName]){
    if(!window[winName].closed) window[winName].close();
  }
  popUpWin = open(URLStr, winName, 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbar=yes,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}