function zobraz_okno(query_string) {
  okno_f = window.open("mail_formular.php?" + query_string,"okno_form","width=450,height=340,menubar=no,directories=no,toolbar=no,location=no,status=no,scrollbars=no,resizable=no");
  okno_f.focus();
}

function openPrint($mkey) {
msg = window.open('tisk.php?id='+$mkey, '_blank', 'toolbar=yes, menubar=yes, location=no, directories=no, scrollbars=yes, resizable=no, status=no, width=660, height=550, top=40, left=40')
}

function rezervace(obj,datum) {
  if(obj.className=="red") {
    obj.className="";
    delRez(datum);
  } else {
    obj.className="red";
    setRez(datum);
  }
}