/configs/navigation.xml
 
	<nav>
		<home>
			<title>Home</title>
			<label>Home</label>
			<module>admin</module>
			<controller>index</controller>
			<action>index</action>
		</home>
		<communities>
			<title>Communities</title>
			<label>Communities</label>
			<module>admin</module>
			<controller>communities</controller>
			<action>index</action>
		</communities>
         </nav>
 
 
 
/library/App/Controller/Plugin/Navigation.php
class App_Controller_Plugin_Navigation extends Zend_Controller_Plugin_Abstract
{
    public function preDispatch(Zend_Controller_Request_Abstract $request)
    {        
	//$view = Zend_Registry::get('view');
	$view = Zend_Controller_Front::getInstance()->getParam('bootstrap')->getResource('view');
	$config = new Zend_Config_Xml(APPLICATION_PATH . '/configs/navigation.xml', 'nav');
	$navigation = new Zend_Navigation($config);
	$view->navigation($navigation); 	
	//search current page's title on navigation.xml by Controller Name
	$pages = $view->navigation()->findAllByController($request->getParam('controller'));		
	    if (count($pages) == 1) {
	        $navPage = current($pages);
	    } else {
	        $navPage = $this->_getCurrentPageFromController($pages, $request->getParam('action'));
	    }    
	    $translate = Zend_Registry::get('Zend_Translate');
	    $view->headTitle()->prepend($translate->_($navPage->getTitle()));		
    }
 
	protected function _getCurrentPageFromController(array $pages, $action) {
	    foreach ($pages as $page) {
	        if ($page->action == $action) {
	            return $page;
	        }
	    }
 
	    throw new Exception("Can't find page in navigation...");
	}    
}
 
/configs/application.ini
resources.frontController.plugins.Navigation = "App_Controller_Plugin_Navigation"