public function __construct(sfSympalContext $sympalContext, sfSympalContent $content, $format = null)
{
$this->_symfonyContext = $sympalContext->getSymfonyContext();
$this->_sympalContext = $sympalContext;
$this->_configuration = $this->_symfonyContext->getConfiguration();
$this->_dispatcher = $this->_configuration->getEventDispatcher();
$this->_configuration->loadHelpers(array('Tag', 'Url', 'Partial'));
$this->_content = $content;
$this->_menuItem = $this->_content->getMenuItem();
$this->_format = $format ? $format : 'html';
}