public function historyinfoAction()
 {
     if ($this->request->isPost()) {
         $msg = new Application_Model_Message();
         $campid = $this->request->getParam('campid');
         $usrid = $this->request->getParam('usrid');
         $info = $msg->getcampaigninfo($campid, $usrid);
     }
     echo json_encode($info);
     exit;
 }