If I'm understanding you right, it is possible, but a pain in the ass to do right. If you remember, on the front page of the last design we had, I had toggle buttons at the top to expand and contract the sidebar. Are you trying to do something like that? If so, take a look at:
http://www.codingforums.com/showthre...threadid=11782
That's where I asked how to do the expand contract effect, maybe you can use the code there to get accomplish what you're trying to do.