/**
  * Fill Message Box by success and notice messages about results of user actions.
  * 
  * @param Varien_Object $counter
  * @return void
  */
 protected function _fillMessageBox($counter)
 {
     $session = Mage::getSingleton('catalog/session');
     if ($counter->getNew()) {
         $session->addSuccess($this->__('%s tag(s) have been accepted for moderation.', $counter->getNew()));
     }
     if (count($counter->getExist())) {
         foreach ($counter->getExist() as $tagName) {
             $session->addNotice($this->__('Tag "%s" has already been added to the product.', $tagName));
         }
     }
     if (count($counter->getSuccess())) {
         foreach ($counter->getSuccess() as $tagName) {
             $session->addSuccess($this->__('Tag "%s" has been added to the product.', $tagName));
         }
     }
     if (count($counter->getRecurrence())) {
         foreach ($counter->getRecurrence() as $tagName) {
             $session->addSuccess($this->__('Tag "%s" has been rejected by administrator.', $tagName));
         }
     }
 }