function okno(adresa) {
		window.open(adresa,"okno","width=300,height=300,resizable=1");
	}

  function checkSendForm(sendForm) {
    var i;
    var required = sendForm.elements["_required"].value.split(",");
    for (i in required) {
      if (sendForm.elements[required[i]] && sendForm.elements[required[i]].value == "") return alert("Musíte vyplnit pole " + required[i]);
    }
    return sendForm.submit();
  }

  function checkSearchForm(searchForm) {
    if (!/\S{3,}/.test(searchForm.elements['query[fulltext]'].value)) return alert("Zadejte text pro vyhledávání! (Minimálně 3 znaky)");
    return searchForm.submit();
  }