accessible drop-down menus

Hi 

I am looking for examples of main site navigation systems where a main (top)
navigation item in the menu is able to link to a landing (section) page, and
open a drop-down menu with sub-menu choices. Can anyone suggest examples
that are both intuitive to use with the keyboard and accessible with a
screen reader.

 

Thanks,

Roger

 

Roger Hudson

Web Usability

Mobile: 0405 320 014

Phone: 02 9568 1535

Web: www.usability.com.au

Blog: www.dingoaccess.com

Twitter: http://twitter.com/rogerhudson

Email: rhudson@usability.com.au