[xml] Walking tree without recursion

[Oliver Kindernay <oliver kindernay gmail com>]

Hello,

I am using libxml2 HTML 4.0 parser to parse HTML and XHTML web pages.
I want to found specific tags (i.e a), so I have to walk through the
tree of parsed document. And I don't want to use recursion like in
this example http://xmlsoft.org/examples/tree1.c. Is there some
mechanism in libxml which provides parsed nodes in some queue?