Unload clip and show buttons

I have a movie that loads another video. When it goes to video by hitting button
below I can hide buttons underneath.
When I unload the movie, I need the buttons to show up again and clickable.

I added the onEnterFrame, but makes no difference.

Can someone help as to how I can bring the buttons back when movie that was loaded is unloaded?

onEnterFrame(_root.VideoBtn.enabled._visible = true);

VideoBtn.onRelease = function(){
loadMovieNum(“video.swf”, 10);
VideoBtn._visible = false;

Thank you in advance.