I am using a WebExplorerBar on a MasterPage to navigation amongs webpages in my site.   When I navigate to a new page, the explorerbar does not postback with the previous item being selected.

I have looked at the solution provided by Valerie on 10-28-2010 (http://community.infragistics.com/forums/p/47906/255212.aspx), and while this works great if you only have a menu with 2 levels (ExplorerBarGroup and ExplorerBarItem).  I actually have 3 levels, being loaded from an XML datasource, the first being the ExplorerBarGroup and 2 levels which are ExplorerBarItems.  When trying to use the sample provided in the above link, the prerender event does not allow for a extra level when a submenu is being used.

if I was able to check to see if the parent of the selected item was infact the ExplorerBarGroup, I would be able to determine if this item is the 2nd or 3rd level, for example:  

if (e.NewSelectedItem.ParentItem.IsExplorerBarGroup() != true )

Unfortunately, the above code does not work.  Can anyone provide me with another way of getting this information?