sitemap in master/content page

private SiteMapNode ExpandForumPaths(Object sender, SiteMapResolveEventArgs e)
    {
        
        if (SiteMap.CurrentNode != null)
        {
            SiteMap.SiteMapResolve -= new SiteMapResolveEventHandler(this.ExpandForumPaths);

            SiteMapNode currentNode = SiteMap.CurrentNode.Clone(true);
            SiteMapNode tempNode = currentNode;

            if ((tempNode = tempNode.ParentNode) != null)
            {
                string hlist = tempNode.ParentNode.Url;
                tempNode.Title = "Hotel Details";

                //if (Request.UrlReferrer != "")
                HttpContext context = HttpContext.Current;
                string baseUrl = context.Request.Url.ToString();

              //  if (Request != null)
             //   {
                    try
                    {
                        ViewState["GoBackTo"] = HttpContext.Current.Request.UrlReferrer;
                    }
                    catch (Exception etr)
                    {
                        string excpt = etr.ToString();
                    }
             //   }

                //string vurl = ViewState["GoBackTo"].ToString();
                tempNode.Url = ViewState["GoBackTo"].ToString();
                Session["HotellistDetails"] = ViewState["GoBackTo"].ToString();
                tempNode.ParentNode.Url = Session["Hotellistlinks"].ToString();
            }

            if ((tempNode = tempNode.ParentNode.ParentNode) != null)
            {
                HttpContext context1 = HttpContext.Current;
                string baseUrl1 = context1.Request.Url.ToString();

                ViewState["GoBackTo"] = HttpContext.Current.Request.UrlReferrer;
                string vurl1 = ViewState["GoBackTo"].ToString();
                //tempNode.Url = Session["Hotellistlinks"].ToString();

            }

            return currentNode;
        }

        return SiteMap.CurrentNode;
    }