function newokno(adresa,nadpis,alter,xsize,ysize)
{
  var objWnd = window.open("obr.php?addr="+adresa+"&nadpis="+nadpis+"&alt="+alter,"Obrazek","scrollbars=yes,resizable=no,height="+ysize+",width="+(xsize+20)+",left=10,top=10");
  objWnd.focus();
  return false;
}