function potwierdz_upload() {
  var szerokosc=400;
  var wysokosc=20;
  o=window.open("./include/haslo.php","haslo","width="+szerokosc+",height="+wysokosc);
  o.moveTo(screen.width/2-szerokosc/2,screen.height/2-wysokosc  /2);
  o.focus();
  return false;
}