/**
  * @access: protected
  */
 function _filter($params)
 {
     $html = '';
     // No filter in printer version
     if (isset($params['pv']) && $params['pv'] > 0) {
         return;
     }
     $html .= "<!-- Filters -->\n";
     $html .= '<div class="docman_filters">';
     if (isset($params['filter']) && $params['filter'] !== null) {
         $htmlReport = new Docman_ReportHtml($params['filter'], $this, $params['default_url']);
         $html .= $htmlReport->toHtml($params);
     }
     $html .= "</div>\n";
     echo $html;
 }