public override void LoadDataFromXmlNode(System.Xml.XmlNode node)
        {
            base.LoadDataFromXmlNode(node);

            try
            {
                this.referenceId   = node.SelectSingleNode("RefId").InnerText;
                this.referenceGuid = SlideShow.LookupId(this.referenceId, out this.referenceHash);
            }
            catch { }
            try
            {
                this.friendlyName = node.SelectSingleNode("FriendlyN").InnerText;
            }
            catch { }
            try
            {
                this.pin = node.SelectSingleNode("Pin").InnerText;
            }
            catch { }
        }