с парсингм справился, вот теперь как вывести в виде дерева с раскрывающимися узлами подскажите плиз
к примеру есть вот токой xml
<speaker>
    <name>Barot Bellingham</name>
    <shortname>Barot_Bellingham</shortname>
    <reknown>Royal Academy of Painting and Sculpture</reknown>
    <bio>Barot has just finished his final year at The Royal </bio>
  </speaker>
<speaker>
    <name>Barot Bellingham</name>
    <shortname>Barot_Bellingham</shortname>
    <reknown>Royal Academy of Painting and Sculpture</reknown>
    <bio>Barot has just finished his final year at The Royal </bio>
  </speaker>