Single Switch Scanning Browsers

I am looking for single switch scanning of a browser for internet access. For those that can use more than one switch, using tab and return(enter) can provide kind of crude access strategy.

I came across the Hawking toolbar but it only works in Firefox 1.5 (older version). This is just what I was looking for but then I came across Qualilife (www.qualilife.com). Switch/auto scanning accessible products include:

QualiWeb Lite - free- single switch auto scanning of a browser

You can see one of their products being used with head movement detected with a webcam - looks like a nicely integrated product (although it seems expensive).

http://it.youtube.com/watch?v=_3BXE6TP0fs

Firefox can also be setup for alternative access including using numbers to select the links. See the Mouseless Browser Add-on.

https://addons.mozilla.org/en-US/firefox/addon/879?id=879