I implemented async loading treeview as described in

http://tpeczek.blogspot.com/2010/01/asynchronous-treeview-in-aspnet-mvc.html

        <script type="text/javascript">
            $(document).ready(function () {
                $('#categories').treeview({
                    url: '<%= ResolveUrl("~/Store/FileBrowserData/")%>',
                    collapsed: true,
                    persist: "cookie"
                });
            });
        </script>

In leaf click controller is called which shows cart. In this case all nodes in treeview are closed. How to force treeview to keep clicked leaf open after cart is displayed ?

public ActionResult FileBrowserData(string root)
        {
                var nodes = db.ExecuteQuery<TreeViewNode>(...
                foreach (var n in nodes)
                {
                    if (n.hasChildren)
                        continue;
                    n.text = "<a href='" + Url.Action("Browse", "Store", new { artomlii = n.id }) +
                        "'>" + n.text + "</a>";
                }

                return Json(nodes.ToArray(), JsonRequestBehavior.AllowGet);
            }