nsIDOMNode** aReturn) { return nsGenericElement::doInsertBefore(this, aNewChild, aRefChild, aReturn);
nsIDOMNode** aReturn) { return NS_ERROR_FAILURE;
  NS_METHOD InsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,                         nsIDOMNode** aReturn)  {    return nsGenericElement::doInsertBefore(this, aNewChild, aRefChild,                                            aReturn);  }