fold to one column

This is preparatory to cleaning up the gosh darn nav. Right now we have this horrible nav which is pseudo-buttons in a "box" at the top of the page. I want to move the nav to the left hand-side or tabs or *something* but I can't because the content is in two columns in some places. Maybe we even *want* it in two columns in some places but it's more important for the nav to be usable first. This gets rid of the two-column layout, folding everything into one column. Next step would be to kill the box and move it's contents into the &lt;div class="content"&gt;, with any nav going into a left-hand sidebar. After that, we can think again.