You can write XSLT rules to convert it to HTML with the links or smth like this.
(Hmm, or much easier may be using CSS for build.xml)
i.e.
<target name="tar1" depends="tar2, tar3">
....
</target>
will come to
<div class="target">
<a name="tar1"><p class="name">tar1</p></a>
<div class="deps-list">
Depends on:
<ul>
<li><a href="#tar2">tar2</a></li>
<li><a href="#tar3">tar3</a></li>
</ul>
</div>
<div class="content">
Tasks:
<ul>
<li><p class="taskname">Copy</p><p class="taskargs">args...</p></li>
...
</ul>
</div>
</div>