Loaded clip controlling main timeline

I am having a strange little glitch which I can’t seem to makse sense of:

I have a main movie timeline which loads in an external clip of a map on frame 10. When you click on a particular area of the map, this external clip sends the main timeline to another frame which loads another clip (using _level0.gotoAndPlay(75):wink:

…at least this is how it works when testing from Flash. However, as soon as I run the movies in my browser (from Safari or Firefox), it stops working. It will not send the main timeline to another frame. I’ve trid using _root as well as _level0, but no luck.

Any ideas?

Thanks!