multiple word Predictive/autocomplete textarea?

I'm lookin for a javascript plugin (for js/any framework)

I want to create a textarea that while I type will using a supplied data array, check for predictive matches to the current word im typing and try to suggest a solution.

All solutions I've found so far (for jquery) only match one word, then end...

I want to write like a sentence or paragraph but have autocomplete ability.

Mockup image attached.alt text http://data.getafreelancer.com/project/212922/autocomplete-mockup.jpg