function popit(file) {
  var str="scrollbars=0,location=0,statusbars=0,resizable=0,menubar=0,toolbar=0,height=230";
  var aw = screen.availWidth / 3;
  var at = screen.availHeight / 5
  var al = screen.availwidth / 3 * 2 - 50;
  str += ",width=" + aw;
  str += ",top=" + at;
  str += ",left=" + al;
  win1 = open(file, "LISTEN", str);
  win1.focus();
}