TextArea, How do you get V Scroll Position (In Pixels)

programming flash
1

Hi,
Does anybody here know how I can get the (vertical) scroll position in pixels (not rows) of a TextArea.

I cant just multiply rows * line height, as im using html text with different font sizes on each line.

This is so I can align a symbol that scrolls with the text - so I need pixel position (unless I can attach a movie that scrolls with the text-but cant do this either)

Thanks

ac.