uninstallKeyboardActions();
  public void uninstallUI(JComponent c)  {    uninstallListeners();    uninstallDefaults();    uninstallComponents();    scrollTimer = null;    thumbRect = null;    trackRect = null;    trackColor = null;    trackHighlightColor = null;    thumbColor = null;    thumbHighlightColor = null;    thumbDarkShadowColor = null;    thumbLightShadowColor = null;    scrollbar = null;  }