setContentLen() needs to account for pages without right-side

setContentLen() needs to account for pages without right-side
sidebars, too.  Had to change nav menu to an id instead of class
to make this work.

If you see formatting problems the next day or two, hard reload
the page to pull fresh stylesheets.  Sorry for this, but had to
fix the bug.

deryck

git-svn-id: file:///home/svn/samba-web/trunk@747 44aeb9d7-1cd8-0310-b257-a505e0beeac2