rowNode->QueryInterface(NS_GET_IID(nsIDOMHTMLTableRowElement), (void**)aRow);
CallQueryInterface(rowNode, aRow);
nsHTMLTableCellElement::GetRow(nsIDOMHTMLTableRowElement** aRow){  *aRow = nsnull;  nsCOMPtr<nsIDOMNode> rowNode;  GetParentNode(getter_AddRefs(rowNode));  if (rowNode) {    rowNode->QueryInterface(NS_GET_IID(nsIDOMHTMLTableRowElement),                            (void**)aRow);  }}