Three Column Liquid Design

This is a basic three column design with the center "content" area being liquid based on window size.

How does it work?

The page contains 3 divisions...

nav
nav is currently positioned absolutely to the left with a set width of 200 px
content
content has no position applied to it. It only contains margin to account for the 2 sides.
sidebar
sidebar is position absolutely to the right and set to a width of 200px