How to recursively get parent nodes until top of tree is reached?

I have the following XML as example:

<Menu Name="home" Text="Home" NavigateUrl="/tmc" Visible="True" >
     <Menu Name="sites" Text="Control Sites" NavigateUrl="/tmc/sites.aspx" PageTitle="Monitor Control Sites" Visible="True">          
          <Menu Name="br" Text="Brisbane" NavigateUrl="locations.aspx?site=br" Visible="True">

                             ....this can keep going 'n' levels deeper

Now, if I was in the deepest child node in the tree (for example sake), how can I recursively navigate to each parent node (ie parent of current, parent of current, parent of current and so on).


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using System.Xml;

public sealed class NodeIterator
      private NodeIterator() {}
      public static XmlNode [] GetNodesArray(XmlNode node)
            ArrayList al = new ArrayList();
            while (node != null)
                  if (node.ParentNode != null && node.ParentNode is XmlElement)
                              node = node.ParentNode;
                              node = null;
            (XmlNode [])return al.ToArray(typeof(XmlNode));


///calling it.
XmlNode [] nodes = NodeIterator.GetNodesArray(doc.SelectSingleNode("//Menu[@NavigateUrl='locations.aspx?site=br']"));

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