function programkeresoOpen() {
      document.getElementById('nyitva').style.display = "block";
      document.getElementById('zarva').style.display = "none";
    }

    function programkeresoClose() {
      document.getElementById('nyitva').style.display = "none";
      document.getElementById('zarva').style.display = "block";
    }
    
    function expandcontent(mit) {
      if (document.getElementById(mit).style.display=='none') {
        document.getElementById(mit).style.display='';
      } else {
        document.getElementById(mit).style.display='none';
      }
    }