public function _nav($path)
    {
        $output = '<div class="header">'."\n";
        $output .= '<h1>'.$this->_doclet->getHeader()."</h1>\n";
        if ($this->_sections) {
            $output .= "<ul>\n";
            foreach ($this->_sections as $section) {
                if (isset($section['selected']) && $section['selected']) {
                    $output .= '<li class="active">'.$section['title']."</li>\n";
                } else {
                    if (isset($section['url'])) {
                        $output .= '<li><a href="'.str_repeat('../', $this->_depth).$section['url'].'">'.$section['title']."</a></li>\n";
                    } else {
                        $output .= '<li>'.$section['title'].'</li>';
                    }
                }
            }
            $output .= "</ul>\n";
        }
        $output .= "</div>\n\n";

        $output .= '<div class="small_links">'."\n";
        $output .= '<a href="'.str_repeat('../', $this->_depth).'index.html" target="_top">Frames</a>'."\n";
        $output .= '<a href="'.str_repeat('../', $this->_depth).$path.'" target="_top">No frames</a>'."\n";
        $output .= "</div>\n";
        $thisClass = strtolower(get_class($this));
        if ($thisClass == 'classwriter') {
            $output .= '<div class="small_links">'."\n";
            $output .= 'Summary: <a href="#summary_field">Field</a> | <a href="#summary_method">Method</a> | <a href="#summary_constr">Constr</a>'."\n";
            $output .= 'Detail: <a href="#detail_field">Field</a> | <a href="#detail_method">Method</a> | <a href="#summary_constr">Constr</a>'."\n";
            $output .= "</div>\n";
        } elseif ($thisClass == 'functionwriter') {
            $output .= '<div class="small_links">'."\n";
            $output .= 'Summary: <a href="#summary_function">Function</a>'."\n";
            $output .= 'Detail: <a href="#detail_function">Function</a>'."\n";
            $output .= "</div>\n";
        } elseif ($thisClass == 'globalwriter') {
            $output .= '<div class="small_links">'."\n";
            $output .= 'Summary: <a href="#summary_global">Global</a>'."\n";
            $output .= 'Detail: <a href="#detail_global">Global</a>'."\n";
            $output .= "</div>\n";
        }

        return $output;
    }