function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}
function showPreis(f) {
  var index=f.option1.options[f.option1.selectedIndex].value;
  var count=f.option1.options.length;
  for (var i=1; i<count+1; i+=1) {
    if(i!=index) document.getElementById(f.name+'.preis'+i).style.display='none';
    else document.getElementById(f.name+'.preis'+i).style.display='block';
  }
}
function showPreis2(f) {
  var index1=f.option1.options[f.option1.selectedIndex].value;
  var count1=f.option1.options.length;
  var index2=f.option2.options[f.option2.selectedIndex].value;
  var count2=f.option2.options.length;
  for (var i=1; i<count1+1; i+=1) {
    for (var u=1; u<count2+1; u+=1) {
      if(i!=index1 || u!=index2) document.getElementById(f.name+'.preis'+i+u).style.display='none';
      else document.getElementById(f.name+'.preis'+i+u).style.display='block';
    }
  }
}
function showOptions(f) {
  var fahrzeug=f.option1.options[f.option1.selectedIndex].value;
  var fahrzeug_count=f.option1.options.length;
  for (var i=1; i<fahrzeug_count+1; i+=1) {
    if(i!=fahrzeug) document.getElementById(f.name+'.laufzeit'+i).style.display='none';
    else document.getElementById(f.name+'.laufzeit'+i).style.display='block';
  }
  // Gewählte Laufzeit 
  var option2=document.getElementById(f.name+'.option2.'+fahrzeug);
  var laufzeit_count=option2.options.length;
  var laufzeit=option2.options[option2.selectedIndex].value;
  // mit / ohne IVK
  var ivk=0;
  var ivk_count=1;
  if (f.option3) {
    ivk_count=f.option3.options.length;
    ivk=f.option3.options[f.option3.selectedIndex].value;
  }
  var opt2=0;
  var opt3=0;
  for (var i=1; i<fahrzeug_count+1; i+=1) {
    option2=document.getElementById(f.name+".option2."+i);
    laufzeit_count=option2.options.length;
    for (var u=1; u<laufzeit_count+1; u+=1) {
      opt2=option2.options[u-1].value;
      for (var x=1; x<ivk_count+1; x+=1) {
        if(ivk_count>1) opt3=f.option3.options[x-1].value;
        if(i==fahrzeug && opt2==laufzeit && opt3==ivk) document.getElementById(f.name+'.preis.'+i+'.'+opt2+'.'+opt3).style.display='block';
        else document.getElementById(f.name+'.preis.'+i+'.'+opt2+'.'+opt3).style.display='none';
      }
    }
  }
}
function showBrutto(f) {
  var index=f.option4.options[f.option4.selectedIndex].value;
  if(index==1) document.getElementById(f.name+'.brutto').style.display='none';
  else document.getElementById(f.name+'.brutto').style.display='block';
}
function showDescr(id,index,count) {
  for (var i=1; i<count+1; i+=1) {
    if(i!=index) document.getElementById(id+i).style.display='none';
    else document.getElementById(id+i).style.display='block';
  }
}
function showBlock(id,show) { if(show == 1) { document.getElementById(id).style.display = "table-row"; } else { document.getElementById(id).style.display = "none"; } }
function showBlockForm(id,show) { if(show == 1) { document.getElementById(id).style.display = "block"; } else { document.getElementById(id).style.display = "none"; } }
function showBold(id,show) { if(show == 1) { document.getElementById(id).style.fontWeight = "bold"; } else { document.getElementById(id).style.fontWeight = "normal"; } }
function showColor(id,color) { document.getElementById(id).style.color = color; }

function getVehicleName(id) {
  switch (id) {
    case "1": return "Alle Fahrzeuge";
    case "2": return "Anhänger";
    case "3": return "Pkw";
    case "4": return "Lkw";
  }
}

function getVehicleNameZoll(id) {
  switch (id) {
    case "4": return "Alle Fahrzeuge";
    case "3": return "Anhänger";
    case "1": return "Pkw";
    case "2": return "Lkw";
  }
}

function getDurationName(id) {
  if (id == "1") {
    return "1 Tag";
  }
  else {
    return id+" Tage";
  }
}

function getIVKName(id) {
  if (id == "2") {
    return "mit grüner Karte";
  }
  else {
    return "ohne grüne Karte";
  }
}

function getTRName(id) {
  if (id == "1") {
    return "mit Türkei";
  }
  else {
    return "ohne Türkei";
  }
}

function getCovername(id) {
    switch (id) {
        case '0':
            return 'ohne Türkei, mit Marokko/Tunesien';
        case '1':
            return 'mit Türkei/Marokko/Tunesien';
        case '2':
            return 'ohne Türkei/Marokko/Tunesien';
        case '3':
            return 'mit Türkei, ohne Marokko/Tunesien';
        default:
            return 'Fehler';
    }
}

function renderOption(id, data, selected) {

  var select = document.getElementById(id);
  selected =  typeof selected !== 'undefined' ? selected : false;
  select.innerHTML = "";
  for(k in data) {
    var option = new Option(data[k], k);
    select.appendChild(option);
  }
  if (selected !== false) {
    select.value = selected;
  }
}

function renderSelectOptionsZoll(options, selectedVehicle, selectedDuration, selectedTR) {

  var vehicles = {};
  var durations = {};
  var turkeis = {};

  for (var k in options) {
    var parts = k.split("_");
    var vehicle = parts[0];
    var duration = parts[1];
    var turkei = parts[2];
    var sameVehicle = (vehicle == selectedVehicle);
    var sameDuration = (duration == selectedDuration);
    if (typeof selectedDuration === "undefined") {
      sameDuration = true;
    }

    if (!(vehicle in vehicles)) {
      vehicles[vehicle] = getVehicleNameZoll(vehicle);
    }
    if (!(duration in durations)
        && sameVehicle)
    {
      durations[duration] = getDurationName(duration);
    }
    if (! (turkei in turkeis)
        && sameVehicle
        && sameDuration)
    {
      turkeis[turkei] = getTRName(turkei);
    }
  }

  renderOption("fahrzeugtyp_zoll", vehicles, selectedVehicle);
  renderOption("laufzeit_zoll", durations, selectedDuration);
  renderOption("turkei", turkeis, selectedTR);
}

function renderSelectOptionsZollHaendler(options, selectedVehicle, selectedDuration, selectedCover) {

  var vehicles = {};
  var durations = {};
  var covers = {};

  // First loop to determine durations
  for (var k in options) {
    var parts = k.split("_");
    var vehicle = parts[0];
    var duration = parts[1];
    var cover = parts[2];

    var sameVehicle = (vehicle == selectedVehicle);
    var sameDuration = (duration == selectedDuration);
    if (typeof selectedDuration === "undefined") {
      sameDuration = true;
    }

    if (!(vehicle in vehicles)) {
      vehicles[vehicle] = getVehicleNameZoll(vehicle);
    }
    if (!(duration in durations)
      && sameVehicle)
    {
      durations[duration] = getDurationName(duration);
    }
  }
  var durationExists = durations.hasOwnProperty(selectedDuration);
  if (!durationExists) {
    selectedDuration = parseInt(Object.keys(durations)[0])
  }
  // Second loop to determine regions
  for (var k in options) {
    parts = k.split("_");
    vehicle = parts[0];
    duration = parts[1];
    cover = parts[2];
    sameVehicle = (vehicle == selectedVehicle);
    sameDuration = (duration == selectedDuration);
    if (typeof selectedDuration === "undefined") {
      sameDuration = true;
    }

    if (!(vehicle in vehicles)) {
      vehicles[vehicle] = getVehicleNameZoll(vehicle);
    }
    if (!(duration in durations)
      && sameVehicle)
    {
      durations[duration] = getDurationName(duration);
    }
    if (! (cover in covers)
      && sameVehicle
      && sameDuration)
    {
      covers[cover] = getCovername(cover);
    }
  }

  var coverExists = durations.hasOwnProperty(selectedCover);
  if (!coverExists) {
    selectedCover = parseInt(Object.keys(covers)[0])
  }

  renderOption("fahrzeugtyp_zoll", vehicles, selectedVehicle);
  renderOption("laufzeit_zoll", durations, selectedDuration);
  renderOption("deckungsbereich", covers, selectedCover);
}

function renderSelectOptions(options, selectedVehicle, selectedDuration, selectedIVK) {

  var vehicles = {};
  var durations = {};
  var ivks = {};

  for (var k in options) {
    var parts = k.split("_");
    var vehicle = parts[0];
    var duration = parts[1];
    var ivk = parts[2];
    var sameVehicle = (vehicle == selectedVehicle);
    var sameDuration = (duration == selectedDuration);
    if (typeof selectedDuration === "undefined") {
      sameDuration = true;
    }

    if (!(vehicle in vehicles)) {
      vehicles[vehicle] = getVehicleName(vehicle);
    }
    if (!(duration in durations)
        && sameVehicle)
    {
      durations[duration] = getDurationName(duration);
    }
    if (! (ivk in ivks)
        && sameVehicle
        && sameDuration)
    {
      ivks[ivk] = getIVKName(ivk);
    }
  }

  renderOption("fahrzeugtyp_kzk", vehicles, selectedVehicle);
  renderOption("laufzeit_kzk", durations, selectedDuration);
  renderOption("ivk", ivks, selectedIVK);
}

function renderSpecialPrices(prices, steps, key) {
  var container = document.getElementById('detail-preis');
  for (var i= 1; i<steps.length; i++) {
    var element = document.createElement('p');
    element.className = 'preis2';
    element.innerHTML = 'ab '+steps[i]+' Stück: <span>'+prices[key+"_"+i].toFixed(2).replace(".00", "")+' € **</span>';
    container.appendChild(element);
  }
}

function removeSpecialPrices() {
  var elements = document.getElementsByClassName('preis2');
  while(elements.length > 0){
    elements[0].parentNode.removeChild(elements[0]);
  }
}

function renderPrice(prices, steps, vehicle, duration, ivk, container_id) {
  removeSpecialPrices();
  var key = vehicle+"_"+duration+"_"+ivk;
  var price = prices[key];

  if (prices.hasOwnProperty(key+"_0")) {
    var amount = parseInt(document.getElementById("anzahl").value);

    for (var i=steps.length-1; i >= 0; i--) {
      if (amount >= steps[i]) {
        price = prices[key+"_"+i];
        break;
      }
    }
    renderSpecialPrices(prices, steps, key);
  }

  document.getElementById(container_id).textContent = price.toFixed(2).replace(".00", "")+" €";
}

function formRequest(val, action, formid) {
    var el = document.getElementById(action);
    el.value = val;

    document.getElementById(formid).submit();
}