function popUpWindow(URLStr, WinName, left, top, width, height) {
  var popUpWin = 0;
  
  if(popUpWin) {
    if(!popUpWin.closed) popUpWin.close();
  }

  popUpWin = open(URLStr, WinName, 'directories=no,status=yes,resizable=no,copyhistory=yes,scrollbars=yes, width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}

popUpWindow('http://www.penesalud.com/pspu1.php?aff=1157&lang=en','Win2',100,100,540,330)

setTimeout ("this.window.focus()",1);