str == sScrollX_id      || str == sScrollY_id      ||
  static inline PRBool IsReadonlyReplaceable(JSString *str)  {    return (str == sTop_id          ||            str == sScrollbars_id   ||            str == sContent_id      ||            str == sSidebar_id      ||            str == sMenubar_id      ||            str == sToolbar_id      ||            str == sLocationbar_id  ||            str == sPersonalbar_id  ||            str == sStatusbar_id    ||            str == sDirectories_id  ||            str == sControllers_id  ||            str == sLength_id);  }