This addon is based on Mouse Combat by wwwXorIO and comes with no support what so ever.
Use it at your own "risk" (there's not risk here, really) and tweak it at your own taste.
My default configuration is set to DELETE activate/deactivate and RIGHT CLICK deactivate.
It will act as if you were pressing right mouse button without needing to keep pressing it. I made this to play on my macbook without a mouse and using just the touchpad. And because Mouse Combat was too much to me. This makes everything easier.
- update: As far as Oct 31st 2011, the addon still works fine on my gaming experience! ;-)