public function get_tab()
 {
     global $origin_tab_display;
     $list_origins = origin::get_list($this->type);
     $origin_tab_display = str_replace("!!type!!", $this->type, $origin_tab_display);
     $rows = "";
     if (count($list_origins) > 0) {
         for ($i = 0; $i < count($list_origins); $i++) {
             $origin = new origin($list_origins[$i]);
             $rows .= $origin->show_tab_row();
         }
     }
     return str_replace("!!rows!!", $rows, $origin_tab_display);
 }