[HTML5] Wacky DOM behavior

[Jeff Cutsinger]

I've been toying around with HTML5 a bit and I've run into this strange
behavior in Firefox (2.0).

<nav>
  <ul>...</ul>
</nav>

Results in the ul element being a sibling of the nav. This makes
scripting a bit difficult. Advice? Should I simply not use the new
elements? (I wrote a blog entry with more detail:
http://jeff.cutsinger.org/news/14/Adventures-in-HTML5). You can also see
the whole site (in its broken state) at http://jeff.cutsinger.org/test/