.bind("select_node.jstree", function (event, data) {
        var id = data.rslt.obj.attr("id").replace("node_", "");
        $("#response").load( "functions/jstree/my_actions.php?action=load_response&id=" + id );
    })

<form method="POST" action="">
        //if using instead of $id something else, like static phrase (edit_content or body),
        // under such conditions next click return error...
        //Error: uncaught exception: [CKEDITOR.editor] The instance "edit_content" or "body" already exists.
        <?php echo $CKEditor->editor($id, $r['body']); ?>
        <input type="submit" value="Edit" id="update" name="update">
    </form>