function UseBillingAddress(OnOff)
{
    if (OnOff == true)
    {
       
    // Use billing address is checked so add the billing address
    // and disable the fields.
    
    // Address L1
    var addressL1 = document.getElementById("template_txtDeliveryAdd1");
    addressL1.value = document.getElementById("template_txtAdd1").value;
    addressL1.disabled=true;
    
    // Address L2
    var addressL2 = document.getElementById("template_txtDeliveryAdd2");
    addressL2.value = document.getElementById("template_txtAdd2").value;
    addressL2.disabled=true;
    
    // Address L3
    var addressL3 = document.getElementById("template_txtDeliveryAdd3");
    addressL3.value = document.getElementById("template_txtAdd3").value;
    addressL3.disabled=true;
    
    // Address L4
    var addressL4 = document.getElementById("template_txtDeliveryAdd4");
    addressL4.value = document.getElementById("template_txtAdd4").value;
    addressL4.disabled=true;
    
    // County
    var county = document.getElementById("template_txtDeliveryCounty");
    county.value = document.getElementById("template_txtCounty").value;
    county.disabled=true;
    
    // Postcode
    var postcode = document.getElementById("template_txtDeliveryPostcode");
    postcode.value = document.getElementById("template_txtPostcode").value;
    postcode.disabled=true;
    
    // Country
    var country = document.getElementById("template_ddDeliveryCountry");
    country.value = document.getElementById("template_ddCountry").value;
    country.disabled=true;
    }
    else
    {
    // Use billing address is unchecked so remove the billing address
    // and enable the fields.
    
    // Address L1
    var addressL1 = document.getElementById("template_txtDeliveryAdd1");
    addressL1.value = "";
    addressL1.disabled=false;
    
    // Address L2
    var addressL2 = document.getElementById("template_txtDeliveryAdd2");
    addressL2.value = "";
    addressL2.disabled=false;
    
    // Address L3
    var addressL3 = document.getElementById("template_txtDeliveryAdd3");
    addressL3.value = "";
    addressL3.disabled=false;
    
    // Address L4
    var addressL4 = document.getElementById("template_txtDeliveryAdd4");
    addressL4.value = "";
    addressL4.disabled=false;
    
    // County
    var county = document.getElementById("template_txtDeliveryCounty");
    county.value = "";
    county.disabled=false;
    
    // Postcode
    var postcode = document.getElementById("template_txtDeliveryPostcode");
    postcode.value = "";
    postcode.disabled=false;
    
    // Country
    var country = document.getElementById("template_ddDeliveryCountry");
    country.value = "31";
    country.disabled=false;
    }
    
}