public function flushEmailErrors() {
    foreach($this->observers as $observer) {
      if(get_class($observer)=='Web2All_ErrorObserver_Email'){
        $observer->flushErrors();
      }
    }
    foreach($this->observer_names as $classname) {
      if($classname=='Web2All_ErrorObserver_Email'){
        $this->Web2All->PluginGlobal->$classname->flushErrors();
      }
    }
  }