親がmain.swf、子がsub.swf以下はmain.swf。btnMcを配置

//sub.swfを読み込む
var url_sub : URLRequest = new URLRequest("sub.swf");
var loader_sub : Loader = new Loader();
loader_sub.load(url_sub);
stage.addChild (loader_sub);
btnMc.buttonMode = true;
// btnMcをクリックでsubSwfの”HandleEnterFrame”をremoveする
myMC.addEventListener(MouseEvent.CLICK,function(event){
var subSwf : Object = loader_sub.content;	// 子の root
subSwf.bg_fld.removeEventListener( Event.ENTER_FRAME, (subSwf as　MovieClip).HandleEnterFrame );
});