Bootstraping Zend_Navigation

Bootstrap.php

<?php
class Bootstrap extends Zend_Application_Bootstrap_Bootstrap
{
   
   protected function _initNavigation()
    {
        $this->bootstrap('layout');
        $layout = $this->getResource('layout');
        $view = $layout->getView();
        $config = new Zend_Config_Xml(APPLICATION_PATH . 
                                      '/configs/navigation.xml', 
                                      'nav');
        $navigation = new Zend_Navigation($config);
        $view->navigation($navigation);
    }
}
?>