validation_errors not showing up with ajax

[eluser]pickupman[/eluser]
I am using the same template library, and the way I use it by defining a ajax request variable.

Code:

//Global define for AJAX Requests
define('IS_AJAX', isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');

Now in my controller, when I finished parsing the results I use

Code:

if(IS_AJAX){
   //Page was loaded by ajax request
   $data['response'] = 'true';
   $data['message']  = $this->template->write_view('content','tpl.login_ajax.php',$data);
   echo json_encode($data); //Or have a ajax view to echo the json string
}else{
  $this->template->write_view('content','tpl.login.php', $data);
  $this->template->render(); //Echo out whole template
}

I use jQuery, and post login using .ajax(); I read the json response from the server to update the dom accordingly.