Making Keywurl work with Safari 5

I would ask the keywurl developer, but I'm sure he'd be fine if you went ahead and did it .. I am desperate for a keywurl extension here :P

I'm curious if it would now be possible to make Keywurl a legit extension with Safari 5.

Keywurl[1] and Safari 140[2] are both extensions that I want to recreate with the new framework. Mostly for learning, don't want to step on anyone's toes.

[1] http://alexstaubo.github.com/keywurl/

[2] http://www.newsfirex.com/safari140/

Please do this! I need my keywurl back!

that is not possible with the current safari api