National Aeronautics and Space Administration

The left navigation section is the column containing the Left Navigation and the Quick Links. You can also use this as a regular content column in the "no left nav" option.

Please read instructions carefully before beginning work

This page will explain how to use the left navigation section, activate, and deactivate items, and create a sub navigation. To remove the left navigation entirely, please see the Columns & Layout Section.

Left navigation section resides inside the leftnav div:

To add a link insert a list item

between the list tag

To highlight an item as the current page, add class=active to link tag:

To create sub navigation, add the links as a list

give the list tag a class "subnav":

To highlight sub navigation item, add class="active" to its link: