Professional :: Load An External .swf File On Internal Movie Clip?

I have a movie clip called - contenct_mc       ----------------inside this movie clip I have another movie clip called - Introduction_mc    ------inside this mvovie clip There is another movie clip called - Footer_mc       -------inside this movie clip on actions layer I have copied the below code to show clock.swf file....but the following code doesn't work
 
CODE:I am using Flash CS4 AS3
 
var R:Loader=new Loader();addChild(R);
R.load(new URLRequest("clock.swf"));R.x = 540;R.y = 205;
R.contentLoaderInfo.addEventListener(Event.INIT, RgrowLoader);
function RgrowLoader(evt:Event):void {
R.width = 200;     R.height = 200;}