/**
  * getImages
  */
 public function getImages($label_id, $role = false)
 {
     if (!is_numeric($label_id)) {
         return false;
     }
     require_once 'models/common/common_taxonomy_label_image.php';
     $LabelImage = new common_taxonomy_label_image();
     if ($role) {
         $query = "node_id = {$label_id} AND role = '{$role}'";
     } else {
         $query = "node_id = {$label_id}";
     }
     $list = $LabelImage->listing($query);
     return $list;
 }