My first drop down menu...button wont work

Hey everyone, I am by no means an actionscript genius. I took a tutorial online to figure out how to do a drop down menu. It is all visually functional but when I click a sub-menu item it wont work.

For example, if I click the “company” tab on my website, there are 2 options: “about us” and “contact us”. In my time frame we are sitting on frame 200. I have added the following actionscript to the “about us” sub-menu button:

on (release) {gotoAndPlay(201);

But when I test the movie and click the “about” sub-menu button, nothing happens?! Does anyone have any idea what I am doing wrong?

Any help is greatly appreciated.