// truong hop bo chon session
 if ($mysession->checked != null && array_key_exists("bochon", $param)) {
     foreach ($param as $key => $item) {
         if ($item == 1 && $num->isValid($key) && in_array($key, $mysession->checked)) {
             foreach ($mysession->checked as $skey => $sitem) {
                 if ($sitem == $key) {
                     unset($mysession->checked[$skey]);
                 }
             }
         }
     }
 } else {
     if (array_key_exists("them", $param)) {
         foreach ($param as $key => $item) {
             if ($num->isValid($key) && $item == 1) {
                 if (!$data->isExitInArray($mysession->checked, $key)) {
                     $mysession->checked[] = $key;
                 }
             }
         }
     } else {
         if (array_key_exists("chonlonhuom", $param)) {
             //echo "<script>window.location.href='".HOST_PROJECT."/index/xem/khomoc/true/chonlonhuom/true';</script>";
             $_redirector = Zend_Controller_Action_HelperBroker::getStaticHelper('redirector');
             $_redirector->gotoUrl(HOST_PROJECT . "/index/xem/khomoc/true/chonnhuom/true/mykhohang/" . $makho);
         }
     }
 }
 //form trên cùng
 $form->populate($param);
 echo $form;