Keyboard Navigation free WordPress plugin

Keyboard Navigation uses CSS 3 Selectors (via the Prototype JS library) to pluck navigational elements out of your pages and assign them to keyboard shortcuts. This sort of navigation is ideal for sites which have small, sequential archives (such as Webcomic sites). The plugin offers one assistive feature: you can enable the highlighting of the hyperlink elements that are being used to generate the navigation, and you can send selection errors to the Firebug console or to alert() messages.