Q:

Wordpress wp_nav_menu help

I am currently using wp_nav_menu to generate my nav menu.  Although everything is working and menu highlighting is working, how do you get child pages to be highlighted as well?
For example, I have a menu item named "Page" and it has 3 child pages under that.  So when I am in any of the child pages, I want the main Page to still be highlighted...how is that possible with using wp_nav_menu..?

A:

The body_class function which WordPress has can help you out here.

http://codex.wordpress.org/Function_Reference/body_class

What you'll want is current-menu-parent which you can utilise in your CSS. Not particularly well documented as far as I can tell, but this article helps:

http://www.designisphilosophy.com/tutorials/highlight-current-page-or-category/

