public function removeimg()
 {
     ob_clean();
     $imname = JRequest::getString('imname', '');
     $spath = JRequest::getString('spath', '');
     $data_id = JRequest::getInt('data_id', 0);
     $extra_field = new extra_field();
     if ($data_id) {
         $extra_field->deleteExtraFieldData($data_id);
     }
     if (JPATH_ROOT . '/' . $spath . '/' . $imname) {
         unlink(JPATH_ROOT . '/' . $spath . '/' . $imname);
     }
     exit;
 }