function Prodej(id, ks){
  var pocet = document.getElementById(id).value;
  //alert('id: ' + id + ', ' + 'pocet: ' + pocet + ', ' + 'ks: ' + ks);
  if (pocet > ks){
    alert(over);
    pocet = ks;
  }
  document.ksform.kusu.value = pocet;
  document.ksform.produkt.value = id;
  onclick=document.ksform.submit();
}


function Disable_buttons(){
 if (document.registrace.shodna.checked){
   document.registrace.dodaci_firma.value = document.registrace.fakturacni_firma.value;
   document.registrace.dodaci_jmeno.value = document.registrace.fakturacni_jmeno.value;
   document.registrace.dodaci_prijmeni.value = document.registrace.fakturacni_prijmeni.value;
   document.registrace.dodaci_ulice.value = document.registrace.fakturacni_ulice.value;
   document.registrace.dodaci_mesto.value = document.registrace.fakturacni_mesto.value;
   document.registrace.dodaci_psc.value = document.registrace.fakturacni_psc.value;
   document.registrace.dodaci_email.value = document.registrace.fakturacni_email.value;
   document.registrace.dodaci_telefon.value = document.registrace.fakturacni_telefon.value;
 }
}

function Copy_IC(){
  document.registrace.fakturacni_dic.value = "CZ"+document.registrace.fakturacni_ic.value;
}

function zobr_gal(ident) {
    var element = document.getElementById(ident);
    if (element.style.display == 'none') {
       element.style.display = '';
    }
    else {
       element.style.display = 'none';
    }
}

function zobr_all_gal(rada) {
  var pole = rada.split(",");
  for(i=0;i<pole.length;i++){
    document.getElementById('gal_' + pole[i]).style.display = '';
    document.getElementById('img_' + pole[i] + '_open').style.display = '';
    document.getElementById('img_' + pole[i] + '_close').style.display = 'none';
  }
  document.getElementById('img_zobr').style.display = 'none';
  document.getElementById('img_hide').style.display = '';
}

function zobr_none_gal(rada) {
  var pole = rada.split(",");
  for(i=0;i<pole.length;i++){
    document.getElementById('gal_' + pole[i]).style.display = 'none';
    document.getElementById('img_' + pole[i] + '_open').style.display = 'none';
    document.getElementById('img_' + pole[i] + '_close').style.display = '';
  }
  document.getElementById('img_zobr').style.display = '';
  document.getElementById('img_hide').style.display = 'none';
}

function mix_img(ident) {
    var element_open = document.getElementById(ident+'_open');
    var element_close = document.getElementById(ident+'_close');
    if (element_open.style.display == 'none') {
      element_open.style.display = '';
      element_close.style.display = 'none';
    }
    else{
      element_open.style.display = 'none';
      element_close.style.display = '';
    
    }
}