How to access button inside movie clip

1

i have this code in an as layer within a movie clip called pages

ss_btn.addEventListener(MouseEvent.CLICK,reportCli ck);

function reportClick (myevent:MouseEvent):void {

// do something in response
addChild(img_holder);
removeChild(img_holder);

}

but the ss_btn im trying to access is within another movie clip called menu is there a way i can access the button