This movie is supposed to start on a random frame, but the code seems to get ignored in Firefox. I also have some weird behavior when i test it locally, but it works fine in IE8, Safari, and Chrome:
Here is the code:
i = Math.floor(Math.random()*3385);
//trace("Current Frame: "+this._currentframe);
The .fla can be downloaded here:
you must delay execution of that goto until enough frames have loaded.