function ValidateTandCs(source, args) {
    args.IsValid = document.getElementById("ckOK").checked;
}
function ValidateBauort(source, args) {
    args.IsValid = document.getElementById("ckBauort").checked;
}
function check_box2() {
    var myCk2 = document.getElementById("PC_NBExtras_ITC0i0_ckKaminSchorn_I");
    var mcH2 = document.getElementById("PC_NBExtras_ITC0i0_ckKaminSchorn_S");
    var myCk1 = document.getElementById("PC_ckSchornstein");
    if (myCk1.checked) { myCk2.checked = false; mcH2.value = 'N' };
    ResetHausvariante(); 
}

function check_box1() {
    var myCk2 = document.getElementById("PC_NBExtras_ITC0i0_ckKaminSchorn_I");
    var mcH2 = document.getElementById("PC_NBExtras_ITC0i0_ckKaminSchorn_S");
    var myCk1 = document.getElementById("PC_ckSchornstein");
    if (myCk2.checked) { myCk1.checked = false };
    if (myCk1.checked) { myCk2.checked = false; mcH2.value = 'N' };
    ResetHausvariante();
}

function check_box4() {
    var myCk2 = document.getElementById("PC_NBExtras_ITC0i0_ckAussenanlageDL_I");
    var mcH2 = document.getElementById("PC_NBExtras_ITC0i0_ckAussenanlageDL_S");
    var myCk1 = document.getElementById("PC_NBExtras_ITC0i0_ckAussenanlage_I");
    if (myCk1.checked) { myCk2.checked = false; mcH2.value = 'N' };
    ResetHausvariante();
}

function check_box3() {
    var myCk2 = document.getElementById("PC_NBExtras_ITC0i0_ckAussenanlageDL_I");
    var mcH2 = document.getElementById("PC_NBExtras_ITC0i0_ckAussenanlageDL_S");
    var myCk1 = document.getElementById("PC_NBExtras_ITC0i0_ckAussenanlage_I");
    var mcH1 = document.getElementById("PC_NBExtras_ITC0i0_ckAussenanlage_S");
    if (myCk2.checked) { myCk1.checked = false; mcH1.value = 'N' };
    if (myCk1.checked) { myCk2.checked = false; mcH2.value = 'N' };
    ResetHausvariante();
}

function CheckGarage() {
    var myCk2 = document.getElementById("PC_ckGarage");
    var myCk1 = document.getElementById("PC_NBExtras_ITC0i0_ckTuerGarage_I");
    var mcH1 = document.getElementById("PC_NBExtras_ITC0i0_ckTuerGarage_S");
    if (!myCk2.checked) { myCk1.checked = false; mcH1.value = 'N' };
    ResetHausvariante();
}

function CheckTuerGarage() {
    var myCk2 = document.getElementById("PC_ckGarage");
    var myCk1 = document.getElementById("PC_NBExtras_ITC0i0_ckTuerGarage_I");
    if (myCk1.checked) { myCk2.checked = true };
    ResetHausvariante();
}

function ResetHausvariante() {
    var myHaus = document.getElementById("luHauserVarianten_I");
    var myTab = document.getElementById("luHauserVarianten");
    if (myHaus != null) { myHaus.value = "-"; myTab.setAttribute("title", ""); }
}