mvc render partial view in layout stackoverflow

//SERVER
  public ActionResult AdminMenu()
  {
      var am = _amr.GetAdminMenu();
      return Json(am,JsonBehaviour.AllowGet);
  }



  //CLIENT
    @using (Ajax.BeginForm("AdminMenu","AdminController", null,  
        new AjaxOptions
        {
            OnSuccess = "renderSuccess",
            OnFailure = "renderFailure",
            OnBegin = "renderBegin"
        },
        new
        {
            id = "frmViewerAdminMenu",
            name = "frmViewerAdminMenu"
        })
    )
    {
    ...

        <script type="text/javascript">
            function renderSuccess(ajaxContext){
               /// ajaxContext is whatever comes back from GetAdminMenu()
            }
        </script>
     ...
    }