Equalbox.js

Here’s simple jQuery plugin that will make sure that related and adjacent columns are of the same height.

How to Use:

1. Include the required files

<script src="http://code.jquery.com/jquery-1.6.1.min.js"></script>
<script src="equalbox.js"></script>

2. Initialize

$("#box1,#box3,#box2").equalbox();

Demo:
http://myhedspace.com/demo/equalbox/

Download:
Via Google Code
Via jQuery Plugins