public function ajaxGetCampaignVialsAvailableAction()
 {
     $this->_helper->layout->disableLayout();
     $form_values = $this->_request->getPost();
     $campaign = new Model_Campaigns();
     $campaign->form_values = $form_values;
     $result = $campaign->getVialsAvailableByCampaignId();
     $this->view->data = $result;
 }