Disable movieclip after showing once help needed

Hello all,

Well, total newb here. First time to post. Kirupa is one of my favorite places to come searching for answers. Learning AS3 has been tough as I come from a design background.

Here’s the issue: This is an eLearning application where the first screen the user sees contains an FLV playback component. After lobbytalk_mc plays, then the playhead proceeds to frame 2 with a frame label of “buttons”. Here’s the code:

lobbyTalk_mc.addEventListener(VideoEvent.COMPLETE, onPlaybackComplete);
function onPlaybackComplete(ev: VideoEvent):void {
     gotoAndPlay("buttons");

The buttons are parts of a graphic on the “buttons” frame and allow the user navigation to new web pages via the navigateToURL call. That is all well and good.

My problem is that once the user watches this very long intro animation and navigates to another page, he/she must use their browser back button to return to the intro page to navigate to a new area. Of course, when they do this, the intro animation starts playing again. Is there some way to keep this from happening? I would prefer that once the user has either watched the whole movieclip or invoked the skip intro button the first time they were there that they not be hassled with doing it a second/third/fourth time whenever they return.

Thanks!

Graham