If you are talking about making the div 100% to the inside of actual wrapping div and that wrapping div being dynamic - you're best doing that with a little Javascript : )
Last time i tried with Javascript, the only idea I got was to find the height of the div but since it's auto I always got undefined back. Is this the case?
For instance:
Obviously that isn't going to work but how do you MAKE it work? :P
In other words(image), how do you achieve THIS:
click me!!!11
If you are talking about making the div 100% to the inside of actual wrapping div and that wrapping div being dynamic - you're best doing that with a little Javascript : )
EDIT: Ummm nevermind, I'm stupid..
Works great. :)