Ajax_load and CKEDITOR

Hi,

I want to show the node's edit form using ajax_load. Everything works great, except the ckeditor's rich editor...
My code to generate the form is:

function mymodule_ajax_navigate_form_callback() {
require_once(drupal_get_path('module', 'node') . '/node.pages.inc');
$nid = $_REQUEST['nid'];
$node = node_load($nid);
drupal_set_title(check_plain($node->title));
$form = drupal_get_form($node->type .'_node_form', $node);
$form = str_replace('action="/ajax-navigate-form', 'action="/node/'.$nid.'/edit', $form);
$result = array(
    'content' => $form,
    // Put the Javascript callback you will use here.
    // You can if you wish leave out this line and instead
    // call your callback directly in your Javascript. See
    // comments in ajax_load_example.js.
    '__callbacks' => array('Drupal.AjaxLoadNavigate.formCallback'),
  );

  // Call drupal_alter('ajax_data', ...). This is what allows ajax_load to
  // add its data and register its Javascript callback.
  // The second argument is the data to be altered.
  // The third argument is a unique identifier for this AJAX data operation.
  // The fourth and optional argument is the original data that was the subject
  // of the ajax operation--in this case, a form ID.
  drupal_alter('ajax_data', $result, 'ajax_load_example', 'ajax_load_example_form');

  
  drupal_json($result);
}

Thanks for your help and sorry for my bad english...