Question about loading an external swf

Hi, I’m using this code (below) from a site I found. Works fine.

I’d like to know what would be the arguement to removeChild. In other words, what would I put in the parentheses to remove the child the code created?

import flash.net.URLRequest; 
import flash.display.Loader; 
import flash.events.Event; 
import flash.events.ProgressEvent; 
function startLoad() { 
    var mLoader:Loader = new Loader(); 
    var mRequest:URLRequest = new URLRequest('home.swf'); 
    mLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onCompleteHandler); 
    mLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler); 
    mLoader.load(mRequest); 
} 
function onCompleteHandler(loadEvent:Event) {         
    addChild(loadEvent.currentTarget.content); 
} 
function onProgressHandler(mProgress:ProgressEvent) { 
    var percent:Number = mProgress.bytesLoaded/mProgress.bytesTotal; 
    trace(percent); 
} 
startLoad();