var noweOkno=null;
	 
 function zamknijOkno() {
  if (noweOkno!=null) {
   if (noweOkno.closed==false) { noweOkno.close() };
     }; 
  };

 function otworzOkno (url, w, h, s) {
   zamknijOkno();
   ustawienia=
   "left=5, top=5, screenX=5, screenY=8,"+ "width=" + w + "," + "height=" + h + ","+ "innerWidth=" + w + "," + "innerHeight=" + h + ","+ "toolbar=no," + "location=no," + "directories=no,"+ "status=no," + "menubar=no," + "scrollbars=" + s + "," + "resizable=no";
   noweOkno=window.open(url,"obrazek",ustawienia); };