function classementGen($object_type, $object_id = 0)
 {
     if (!isset($_SESSION["classementGen_types"][$object_type])) {
         classementGen::parseXml();
     }
     $this->object_type = $object_type;
     if ($object_id) {
         $this->object_id = $object_id;
         $this->getLibelle();
     }
 }