function anzeigeBild(bild) {
    document.getElementById('bildanzeige').style.backgroundImage = "url(fileadmin/img/fahnen/" + bild + ".gif)";
}

function substr_cart(id) {
    if (isNaN(document.getElementById(id).value))
        document.getElementById(id).value = 0;
    document.getElementById(id).value--;
}

function add_cart(id) {
    if (isNaN(document.getElementById(id).value))
        document.getElementById(id).value = 0;
    document.getElementById(id).value++;
}

function disableFormdata(){
    /*
    document.getElementById("k_kreditkarte_1").disabled = (document.getElementById("k_kreditkarte").checked) ? false : true;
    document.getElementById("k_kreditkarte_2").disabled = (document.getElementById("k_kreditkarte").checked) ? false : true;
    document.getElementById("k_kreditkarte_gueltig_mon").disabled = (document.getElementById("k_kreditkarte").checked) ? false : true;
    document.getElementById("k_kreditkarte_gueltig_jahr").disabled = (document.getElementById("k_kreditkarte").checked) ? false : true;
    document.getElementById("k_kreditkarte_nummer").disabled = (document.getElementById("k_kreditkarte").checked) ? false : true;
    document.getElementById("k_kreditkarte_pruef").disabled = (document.getElementById("k_kreditkarte").checked) ? false : true;
    */
    document.getElementById("k_lastschrift_name").disabled = (document.getElementById("k_lastschrift").checked) ? false : true;
    document.getElementById("k_lastschrift_bank").disabled = (document.getElementById("k_lastschrift").checked) ? false : true;
    document.getElementById("k_lastschrift_blz").disabled = (document.getElementById("k_lastschrift").checked) ? false : true;
    document.getElementById("k_lastschrift_kto").disabled = (document.getElementById("k_lastschrift").checked) ? false : true;
    /*
    document.getElementById("k_paypal_name").disabled = (document.getElementById("k_paypal").checked) ? false : true;
    document.getElementById("k_paypal_email").disabled = (document.getElementById("k_paypal").checked) ? false : true;
    if (document.getElementById("k_kreditkarte").checked)
        document.getElementById("k_kreditkarte_1").focus();
    else if (document.getElementById("k_lastschrift").checked)
        document.getElementById("k_lastschrift_name").focus();
    else if (document.getElementById("k_paypal").checked)
        document.getElementById("k_paypal_name").focus();
    */
    
    if (document.getElementById("k_lastschrift").checked)
        document.getElementById("k_lastschrift_name").focus();
    
}

function enableFormdata(){
    document.getElementById("k_liefer_name").disabled = (document.getElementById("check_liefer").checked) ? false : true;
    document.getElementById("k_liefer_vorname").disabled = (document.getElementById("check_liefer").checked) ? false : true;
    document.getElementById("k_liefer_firma").disabled = (document.getElementById("check_liefer").checked) ? false : true;
    document.getElementById("k_liefer_strasse").disabled = (document.getElementById("check_liefer").checked) ? false : true;
    document.getElementById("k_liefer_plz").disabled = (document.getElementById("check_liefer").checked) ? false : true;
    document.getElementById("k_liefer_ort").disabled = (document.getElementById("check_liefer").checked) ? false : true;
    document.getElementById("k_liefer_land").disabled = (document.getElementById("check_liefer").checked) ? false : true;
    if (document.getElementById("check_liefer").checked)
        document.getElementById("k_liefer_name").focus();
}