Sorry for the delay in replying but I can't get a hang on why this would be useful or how it is being used in real life.:)
It looks like you want a table structure with cells that equalise with the content and you would probably need a table for this.
If you are looking for newspaper columns type layouts then you will have to wait a few more years until all browsers support this.
Perhaps it would help if you could point to a site that is displaying like you want and the we could get a good idea of its use.
Sorry for the lack of any real advice as I need to fully understand the requirements first.