function ChangeVisibility(checkBox, deliveryCompany, deliveryTitle, deliveryAddress, deliveryFirstname, deliveryLastname, deliveryStreet, deliveryCity, deliveryCountry, firstname, lastname, street, zip, city) {

    var CheckBox = document.getElementById(checkBox);
    var DeliveryCompany = document.getElementById(deliveryCompany);
    var DeliveryTitle = document.getElementById(deliveryTitle);
    var DeliveryAddress = document.getElementById(deliveryAddress);
    var DeliveryFirstname = document.getElementById(deliveryFirstname);
    var DeliveryLastname = document.getElementById(deliveryLastname);
    var DeliveryStreet = document.getElementById(deliveryStreet);
    var DeliveryCity = document.getElementById(deliveryCity);
    var DeliveryCountry = document.getElementById(deliveryCountry);
    
    var Firstname = document.getElementById(firstname);
    var Lastname = document.getElementById(lastname);
    var Street = document.getElementById(street);
    var Zip = document.getElementById(zip);
    var City = document.getElementById(city);
    
    var visibility = "inline";
    if(CheckBox.checked == false) visibility = "none";

    DeliveryAddress.style.display = visibility;
    DeliveryTitle.style.display = visibility;
    DeliveryCompany.style.display = visibility;
    DeliveryFirstname.style.display = visibility;
    DeliveryLastname.style.display = visibility;
    DeliveryStreet.style.display = visibility;
    DeliveryCity.style.display = visibility;
    DeliveryCountry.style.display = visibility;
    
    if(CheckBox.checked == true) {

        if(Firstname.value.length > 0) Firstname.value = Firstname.value.substring(0, Firstname.value.length-1);
        if(Lastname.value.length > 0) Lastname.value = Lastname.value.substring(0, Lastname.value.length-1);
        if(Street.value.length > 0) Street.value = Street.value.substring(0, Street.value.length-1);
        if(Zip.value.length > 0) Zip.value = Zip.value.substring(0, Zip.value.length-1);
        if(City.value.length > 0) City.value = City.value.substring(0, City.value.length-1);
    }
    else {
    
        Firstname.value = Firstname.value + "x";
        Lastname.value = Lastname.value + "x";
        Street.value = Street.value + "x";
        Zip.value = Zip.value + "x";
        City.value = City.value + "x";
    }
}