Often one would like to have the first or last nav element of a level display differently, e.g. an additional border. The proposed modification adds a "first" to the css class of the first element and a "last" to the last nav element of each level, i.e. to the <li> tag.

For instance this:
<ul class="level3">
<li class="leaf"><a href="/magnoliaAuthor/page1.html">Link 1</a></li>
<li class="leaf"><a href="/magnoliaAuthor/page2.html">Link 2</a></li>
<li class="leaf"><a href="/magnoliaAuthor/page3.html">Link 3</a></li>
<li class="leaf"><a href="/magnoliaAuthor/page4.html">Link 4</a></li>
</ul>

will be turned into this:
<ul class="level3">
<li class="leaf first"><a href="/magnoliaAuthor/page1.html">Link 1</a></li>
<li class="leaf"><a href="/magnoliaAuthor/page2.html">Link 2</a></li>
<li class="leaf"><a href="/magnoliaAuthor/page3.html">Link 3</a></li>
<li class="leaf last"><a href="/magnoliaAuthor/page4.html">Link 4</a></li>
</ul>

Note: I did create the patch file as described in http://wiki.magnolia-cms.com/display/WIKI/Developer+information but the patch file looks strange with many many lines to be removed. Therefore I also added the complete, modified Java file.