public function getgroupoptionsAction()
 {
     $bunit = $this->_getParam('bunit', null);
     $options = sapp_Global::selectOptionBuilder('', 'Select Group');
     if ($bunit != '') {
         $emailcontacts_model = new Default_Model_Emailcontacts();
         $group_data = $emailcontacts_model->getgroupoptions($bunit);
         if (count($group_data) > 0) {
             foreach ($group_data as $group) {
                 $options .= sapp_Global::selectOptionBuilder($group['id'], $group['group_name']);
             }
         }
     }
     $this->_helper->json(array('options' => $options));
 }