// JavaScript Document
function ZmenLokaci() {
  location=document.getElementById('kategorie').options[document.getElementById('kategorie').selectedIndex].value
}

function ZmenLokaci2() {
  adresa = location.href;
  adresa = adresa.split("?typ_kurzu");
  adr = adresa[0];
  adr += "?typ_kurzu=" + document.getElementById('typ_kurzu').value + "&getjazyk=" + document.getElementById('getjazyk').value + "&uroven=" + document.getElementById('uroven').value;
  location = adr;
}

function AddFavorite(linkObj,addUrl,addTitle)
{
  if (document.all && !window.opera)
  {
    window.external.AddFavorite(addUrl,addTitle);
    return false;
  }
  else if (window.opera && window.print)
  {
    linkObj.title = addTitle;
    return true;
  }
  else if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function'))
  {
    if (window.confirm('Přidat oblíbenou stránku jako nový panel?'))
    {
      window.sidebar.addPanel(addTitle,addUrl,'');
      return false;
    }
  }
  window.alert('Po potvrzení stiskněte CTRL-D,\nstránka bude přidána k vašim oblíbeným odkazům.');
  return false;
}


function ukaz_fakturou(id) {
  if (id == 'fakturou') document.getElementById('div_fakturou').className = 'bold';
  else document.getElementById('div_fakturou').className = 'hidden';
}

function Zmenucastnici_orig() {
  ucastnici_pom = "~" + document.getElementById('ucastnici_pom').value + ";";
  ucastnici = document.getElementById('ucastnici').value;
  if (ucastnici.indexOf(ucastnici_pom) >= 0) {
    ucastnici = ucastnici.replace(ucastnici_pom,"");
    ucastnici_pom = "";
    document.getElementById('ucastnici').value = ucastnici;
  }
  else
    document.getElementById('ucastnici').value += ucastnici_pom;
}

function Zmenucastnici(ucastnik,ucast) {
  ucastnici = document.getElementById('ucastnici').value;
  ucastnici_pole = ucastnici.split(";");
  ucastnici_pom = "";
  for (i=0;i<(ucastnici_pole.length);i++) {
    pom = ucastnici_pole[i];
    ucastnik_pole = pom.split("-");
    ucastnik2 = ucastnik_pole[0];
    ucastnik2 = ucastnik2.replace("~","")
    if (ucastnik2 == ucastnik) ucastnici_pom += "~" + ucastnik2 + "-" + ucast + ";";
    else ucastnici_pom += pom + ";";
  }
  document.getElementById("ucastnici").value = ucastnici_pom;
}

function ukaz_prubeh_hodiny(pocet_min) {
  if (document.getElementById('prubeh_hodinyx').value == 1) {
    document.getElementById('duvod_neuskutecneni').disabled = 'disabled';
    document.getElementById('nahradni_termin_den').disabled = 'disabled';
    document.getElementById('nahradni_termin_mesic').disabled = 'disabled';
    document.getElementById('nahradni_termin_rok').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_ucebna').disabled = 'disabled';
  }
  else {
    document.getElementById('duvod_neuskutecneni').disabled = '';
    document.getElementById('nahradni_termin_den').disabled = '';
    document.getElementById('nahradni_termin_mesic').disabled = '';
    document.getElementById('nahradni_termin_rok').disabled = '';
    document.getElementById('nahradni_termin_hodina_od').disabled = '';
    document.getElementById('nahradni_termin_minuta_od').disabled = '';
    document.getElementById('nahradni_termin_hodina_do').disabled = '';
    document.getElementById('nahradni_termin_minuta_do').disabled = '';
    document.getElementById('nahradni_termin_ucebna').disabled = '';
  }
  
  if ((document.getElementById('prubeh_hodinyx').value == 2) || (document.getElementById('prubeh_hodinyx').value == 3))
    document.getElementById('pocet_min').value = 0;
  else
    document.getElementById('pocet_min').value = pocet_min;
}

function ukaz_duvod_neuskutecneni() {
  if (document.getElementById('duvod_neuskutecnenix').value == 2) {
    document.getElementById('nahradni_termin_den').disabled = 'disabled';
    document.getElementById('nahradni_termin_mesic').disabled = 'disabled';
    document.getElementById('nahradni_termin_rok').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_ucebna').disabled = 'disabled';
  }
  else {
    document.getElementById('nahradni_termin_den').disabled = '';
    document.getElementById('nahradni_termin_mesic').disabled = '';
    document.getElementById('nahradni_termin_rok').disabled = '';
    document.getElementById('nahradni_termin_hodina_od').disabled = '';
    document.getElementById('nahradni_termin_minuta_od').disabled = '';
    document.getElementById('nahradni_termin_hodina_do').disabled = '';
    document.getElementById('nahradni_termin_minuta_do').disabled = '';
    document.getElementById('nahradni_termin_ucebna').disabled = '';
  }
}







function ukaz_prubeh_hodiny2(pocet_min) {
  if (document.getElementById('prubeh_hodiny').value == 1) {
    document.getElementById('duvod_neuskutecnenix').disabled = 'disabled';
    document.getElementById('nahradni_termin_den').disabled = 'disabled';
    document.getElementById('nahradni_termin_mesic').disabled = 'disabled';
    document.getElementById('nahradni_termin_rok').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_ucebna').disabled = 'disabled';
  }
  else {
    document.getElementById('duvod_neuskutecnenix').disabled = '';
    document.getElementById('nahradni_termin_den').disabled = '';
    document.getElementById('nahradni_termin_mesic').disabled = '';
    document.getElementById('nahradni_termin_rok').disabled = '';
    document.getElementById('nahradni_termin_hodina_od').disabled = '';
    document.getElementById('nahradni_termin_minuta_od').disabled = '';
    document.getElementById('nahradni_termin_hodina_do').disabled = '';
    document.getElementById('nahradni_termin_minuta_do').disabled = '';
    document.getElementById('nahradni_termin_ucebna').disabled = '';

  }

  if ((document.getElementById('prubeh_hodiny').value == 2) || (document.getElementById('prubeh_hodiny').value == 3))
    document.getElementById('pocet_min').value = 0;
  else
    document.getElementById('pocet_min').value = pocet_min;

}

function ukaz_duvod_neuskutecneni2() {
  if (document.getElementById('duvod_neuskutecneni').value == 2) {
    document.getElementById('nahradni_termin_den').disabled = 'disabled';
    document.getElementById('nahradni_termin_mesic').disabled = 'disabled';
    document.getElementById('nahradni_termin_rok').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_od').disabled = 'disabled';
    document.getElementById('nahradni_termin_hodina_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_minuta_do').disabled = 'disabled';
    document.getElementById('nahradni_termin_ucebna').disabled = 'disabled';
  }
  else {
    document.getElementById('nahradni_termin_den').disabled = '';
    document.getElementById('nahradni_termin_mesic').disabled = '';
    document.getElementById('nahradni_termin_rok').disabled = '';
    document.getElementById('nahradni_termin_hodina_od').disabled = '';
    document.getElementById('nahradni_termin_minuta_od').disabled = '';
    document.getElementById('nahradni_termin_hodina_do').disabled = '';
    document.getElementById('nahradni_termin_minuta_do').disabled = '';
    document.getElementById('nahradni_termin_ucebna').disabled = '';
  }
}