Hittest() embeded MC buttons within MC

1

I have a MC called soundtab_mc, this soundtab_mc has MC buttons inside of it. soundtab_mc I want to be on side of movie and onRollOver have it slide in and then display buttons to control sounds. Here is my AS I am using the onRollOver and Rolloff works however it does not stop when mouse is still over soundtab_mc so it slides in but slides right back out and doesnt stop on desired frame.


var startTracking = function() {
 soundtab_mc.onEnterFrame = function() {
  if(!hitTest(_xmouse,_ymouse,true)) {
   delete this.onEnterFrame;
   this.gotoAndPlay(15);
  }
 }
}
 
soundtab_mc.onRollOver = function() {
 soundtab_mc.gotoAndPlay(2);
 startTracking();
}

It should stop on line 14 however it doesnt it plays through without reading AS within the MC. Any ideas? Thanks in advance. M<T