public function navigation($config = array())
    {
        $config = array_merge($config, array(
          'tabs' => array(
              'about' => array(
                  'label' => 'COM-SETTINGS-ABOUT',
                  'url' => 'option=com_settings&view=about'
              ),
              'settings' => array(
                  'label' => 'COM-SETTINGS-SYSTEM',
                  'url' => 'option=com_settings&view=settings'
              ),
              'apps' => array(
                  'label' => 'COM-SETTINGS-APPS',
                  'url' => 'option=com_settings&view=apps'
              ),
              'assignments' => array(
                  'label' => 'COM-SETTINGS-ASSIGNMENTS',
                  'url' => 'option=com_settings&view=assignments'
              ),
              'plugins' => array(
                  'label' => 'COM-SETTINGS-PLUGINS',
                  'url' => 'option=com_settings&view=plugins'
              ),
              'templates' => array(
                  'label' => 'COM-SETTINGS-TEMPLATES',
                  'url' => 'option=com_settings&view=templates'
              ),
          ),
        ));

        if(!isset($config['selected'])) {
          $config['selected'] = 'settings';
        }

        return $this->_render('navigation', $config);
    }