How do you make a column extend down using CSS?

you will find excellent article on "Equal Height Columns using CSS" from a href="http://www.ejeliot.com/blog/61." rel="nofollow"http://www.ejeliot.com/blog/61./a Also take a look at a href="http://www.positioniseverything.net/articles/onetruelayout/equalheight" rel="nofollow"http://www.positioniseverything.net/arti…/a