public static function isChildPerson_workingexperiance($WorkExpId, $ChildWorkExpId)
 {
     $ischild = false;
     $obj_retResult = DAL_managePerson_workingexperiance::getPerson_workingexperianceListByWorkExpId($ChildWorkExpId);
     //get child node
     if ($obj_retResult->type == 1) {
         $arr_Person_workingexperianceList = $obj_retResult->data;
         $obj_Person_workingexperiance = $arr_Person_workingexperianceList[0];
         $arrParentIds = explode(",", $obj_Person_workingexperiance->Url);
         foreach ($arrParentIds as $Person_workingexperianceParentId) {
             if ($Person_workingexperianceParentId == $WorkExpId) {
                 $ischild = true;
             }
         }
     }
     return $ischild;
 }