// Delivery Address Show/Hide routine
function deliveryAddressChange() {
  deliveryForm = document.getElementById('delivery-form');
  if (document.forms['payment-form'].delivery_check.checked == true) {
    deliveryForm.style.display = 'none';
    deliveryForm.style.visibility = 'hidden';
  } else {
    deliveryForm.style.display = 'block';
    deliveryForm.style.visibility = 'visible';
  }

  return true;
}