Reverse movieclip

hi there,and thanks for the tips that you’re giving us flash ‘gurus’…
well i have 3 movieclips (movie_me,movie1_me,movie2_me)which are thread like buttons with labels…up to here i don’t have any broblems…
when the first button is pressed i want to play scrollablemc which is a text with a mask effect…so when i press the second button i want to play in reverse the text with the mask(scrollablemc) and go to the second movie which is another text with another effect and so on…!!
what should i do?
please give me an answer,because last time i posted you didn’t answer me…
thanx
i’ve attach the file so you can understand what i mean