linking to a parent frame

[dynasty_four]

i know how to make a link to a parent frame in AS3

about_btn.addEventListener(MouseEvent.CLICK, aboutClick);

function aboutClick(event:MouseEvent):void{
MovieClip(parent).gotoAndStop("about");
}

thats what i use.. works great. But how to I go up two movie clips, becuase the code above only goes up one movie clip. I'm trying to go up two movie clips instead of one now. any help would greatly be appreciated. Thanks!