Please help me! Flash MX 2004 Pro.


I have a text box called "text" as well as an Up button and a Down
button for scrolling the text.
Attached to frame 1 of the timeline (there is only one frame) is:


function scrollF(){
text.scroll++;


}

Attached to the Down button is:


on(press){
scrollI=setInterval(scrollF,50 );


}

So, this works when I press the down button, but what script do I
use
to make the Up button work, and what script should I add to frame 1?
I
just can't figure it out.
Thanks for any help!