Credo sia qualche parentesi mancata...

Ma a me non da nessun errore:

codice:
onClipEvent(enterFrame){
	if(_parent.avanti){ 
		if (_parent._currentframe>(_parent._totalframes/2)) { 
				gotoAndPlay (_parent._totalframes-_parent._currentframe); 
		} else { 
			_parent.play (); 
		} 
	} else { 
		if (_parent._currentframe<(_parent._totalframes/2)) { 
			gotoAndPlay (_parent._totalframes-_parent._currentframe); 
		} else { 
			_parent.play (); 
		} 
	} 
}