Page-Details : Making Columns Render with Equal Height

By Roy Marchand on Apr 23, 2007


A problem sometimes faced by Web developers is trying to get two (or more) columns in a multi-column layout to be the same height when the content is variable. Rather than using an arbitrary hardcoded value, the heights can be equalized (to the tallest one) with this script.


  • Created by: Roy Marchand
  • Web Site:
  • Posted: April 23, 2007

Assuming two columns in div tags with ids of “leftside” and “rightside” this script will set the height of the shorter to the height of the taller one. The page must be in standards compliant mode with a valid doctype or IE will mess it up in quirks mode. Just change the ids in the script to match the ones on your page.

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: columnsEqualHeight.js


Paste this code into the HEAD section of your HTML document.


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