Getting around div tags

[Fred Condo]

One of my MT blog's design uses div tags to separate the main text of 
the entry from a sidebar and apply different styles and layout to each. 
Divs, being block-level elements, completely inhibit markdown. So far, 
the best compromise I've found is to use BBEdit to markdown the content 
of each div individually, then paste the results into MT.

I wonder if anyone else has run into this limitation, and, if so, have 
you come up with a more elegant solution?

The blog in question is http://gutenberg.tincture.us/