Problem with button inside scrolling section

Okay… I’m pretty new to Flash and I’m stuck on something that I just can’t figure out. I’m creating a full flash site and on one of the pages of the site I have a customized scrollbar with clickable content inside the scrollable section. The content inside the scrolling area is a movie clip. Well, when I add script to the button inside the scrolling area movie clip, it’s doing something weird… The script I’m adding is:

on (release) {

It works but only if you double click the button. I only want the user to click once. What am I doing wrong? Thanks for your help.

P.S. I used this tutorial to create the customized scrolling section: Thanks.