Rewind Button Animation?

Hi,

i need to no if this effect can be done ive searched on the forum but still cant find what i need…

basically what i want to happen is, when you roleOut of the button is starts to play the movie from the frame its was at but backwards and when you roleOver again it stops playing backwards and plays normally at the frame it was on when the rollOver occured (well i think that is how it works)

a perfect example of this work is http://www.techspace.com/

i inclose a FLA to help!!