Fading the text as it scrolls in/out... how?

Hi Kirupians,

I’m sure this is very simply but I can’t seem to get the trick down. I have a simply scroller with text. Nothing dynamic, just a plain 'ol scroller.

I’d like the text to fade in or out, from the top or bottom, as the user scrolls.
… This would be easier to show than explain. Take a look at this site and click on The Film link. The text fades as you scroll up/down.

I’ve tried making the mask for my scroller into a gradient but that doesn’t affect the text.

Any ideas?