How might I force a floating DIV to match the height of another floating DIV?

Question

My HTML code is just dividing the pages into two columns, 65%,35% respectively.

Answer 1

I can't understand why this issue gets pounded into the ground when in 30 seconds you can code a two-column table and solve the problem.

This div column height problem comes up all over a typical layout. Why resort to scripting when a plain old basic HTML tag will do it? Unless there are huge and numerous tables on a layout, I don't buy the argument that tables are significantly slower.