// run when checkbox is clicked to synchronise the delivery details with billing details
function IsDeliverySame_clicked() {

//    if (document.customerform.IsDeliverySame.checked) {

//        document.customerform.txtDeliveryFirstname.value = "";
//        document.customerform.txtDeliveryFirstname.className = "inputBoxDisable";
//        document.customerform.txtDeliveryFirstname.disabled = true;
//        
//        document.customerform.txtDeliverySurname.value = "";
//        document.customerform.txtDeliverySurname.className = "inputBoxDisable";
//        document.customerform.txtDeliverySurname.disabled = true;
//        
//        document.customerform.txtDeliveryAddressLine1.value = "";
//        document.customerform.txtDeliveryAddressLine1.className = "inputBoxDisable";
//        document.customerform.txtDeliveryAddressLine1.disabled = true;

//        document.customerform.txtDeliveryAddressLine2.value = "";
//        document.customerform.txtDeliveryAddressLine2.className = "inputBoxDisable";
//        document.customerform.txtDeliveryAddressLine2.disabled = true; 

//        document.customerform.txtDeliveryCity.value = "";
//        document.customerform.txtDeliveryCity.className = "inputBoxDisable";
//        document.customerform.txtDeliveryCity.disabled = true;

//        document.customerform.txtDeliveryPostCode.value = "";
//        document.customerform.txtDeliveryPostCode.className = "inputBoxDisable";
//        document.customerform.txtDeliveryPostCode.disabled = true;

//        document.customerform.txtDeliveryCountry.value = "";
//        document.customerform.txtDeliveryCountry.className = "inputBoxDisable";
//        document.customerform.txtDeliveryCountry.disabled = true;

//        document.customerform.txtDeliveryStateCode.value = "";
//        document.customerform.txtDeliveryStateCode.className = "inputBoxDisable";
//        document.customerform.txtDeliveryStateCode.disabled = true;

//        document.customerform.txtDeliveryPhone.value = "";
//        document.customerform.txtDeliveryPhone.className = "inputBoxDisable";
//        document.customerform.txtDeliveryPhone.disabled = true;
//    } 
//    else 
    {
        document.customerform.txtDeliveryFirstname.disabled = false;
        document.customerform.txtDeliveryFirstname.className = "inputBoxEnable";
        document.customerform.txtDeliveryFirstname.focus();
        document.customerform.txtDeliverySurname.disabled = false;
        document.customerform.txtDeliverySurname.className = "inputBoxEnable";
        document.customerform.txtDeliveryAddressLine1.disabled = false;
        document.customerform.txtDeliveryAddressLine1.className = "inputBoxEnable";
        document.customerform.txtDeliveryAddressLine2.disabled = false;
        document.customerform.txtDeliveryAddressLine2.className = "inputBoxEnable";
        //document.customerform.txtDeliveryCity.disabled = false;
        //document.customerform.txtDeliveryCity.className = "inputBoxEnable";
        //document.customerform.txtDeliveryPostCode.disabled = false;
        //document.customerform.txtDeliveryPostCode.className = "inputBoxEnable";
        //document.customerform.txtDeliveryCountry.disabled = false;
        //document.customerform.txtDeliveryCountry.className = "inputBoxEnable";
        //document.customerform.txtDeliveryStateCode.disabled = false;
        //document.customerform.txtDeliveryStateCode.className = "inputBoxEnable";
        document.customerform.txtDeliveryPhone.disabled = false;
        document.customerform.txtDeliveryPhone.className = "inputBoxEnable";
    }
}