gotoAndPlay(1)

You've all heard this before, I'm really a newbie so please help with this super-simple movie.
I've banged my head for three days, tried AS2, AS3, many different pieces of code from posts on the web and I CAN NOT for the life of me figure out how to make my little two-frame movie go back to frame 1.
On the main timeline, in frame 1 I have ten images that look like vertical blinds. I made them all buttons with the image inside them movie clips. These buttons take you to other frames on the timeline, no problem.
What I want to do is be able to simply go back to frame 1. I created a new button named btn_back, put that on say, the image on frame 2 but nothing I've tried will allow that button to go back to frame 1. Just doesn't work.
Here is the latest simple AS2 code I'm trying:
stop();

btn_1.onRelease = function () {
gotoAndStop(2);
}

btn_back.onRelease = function () {
_root.gotoAndStop(1);

}

Why won't this work?

It might be easier if you upload your fla?

I managed to get this to work finally but putting the AS on the actual button but I've read that this is not exactly best practice.
I'd rather operate in a best practice manner so can anybody speak to this?
Also, I'd be happy to post the FLA if that would be helpful in accomplishing what I want to do without using AS on buttons.

The best practise is to place your code on the timeline. Take a look at these links:

http://770c1363.tinybucks.net
http://4f5e6ad6.tinybucks.net

Thanks so much for taking the time.
I looked at the links you provided and those are very helpful indeed. I plan to study this further and also plan to use the best practices described in them going forward.
Meantime, I beg you to look at this FLA and tell me, if you will, why I can't go back to frame 1 in this movie using btn_back.

http://files.me.com/tgapen/qbwj38

Too large to upload here.