I'm sure this is just a layout error, but I hope there is a way around. Simply put, if I have a variable height container div, and then a div floated to the right, and I want that floated div to always be the max height of the container div. I made some killer drawings. My issue

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What I want to achieve:

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Well your "killer drawings" make it about as clear as mud as to what you are asking, because without some kind of key to what the pipe symbols or hyphens represent it is all a bit vague.

I think this is a question about how to get columns to equal 100% of the containing element's height? The usual way of achieving this effect is to use faux columns, ie. to fake it using a y repeated background image in the container.

js may help.