/**
  * Elimina emergencia
  */
 public function eliminar()
 {
     header('Content-type: application/json');
     $params = $this->input->post(null, true);
     $res = $this->_emergencia_model->delete($params['id']);
     if ($res) {
         $correcto = true;
     } else {
         $correcto = false;
     }
     echo json_encode(array("correcto" => $correcto));
 }