Pass root flash vars to a child swf

gistfile1.txt

var flashVars:Object = root.loaderInfo.parameters;

var params:String = "";
var count:Number = 0;
for each (var value:String in flashVars) {
	if(count==0){
	  params += value + "=" + flashVars[value];
	} else {
	   params += "&" + value + "=" + flashVars[value];
	}
	count++;
}

var ldr:Loader = new Loader();
var url:String = "http://mysite.com/child.swf?" + params;
var urlReq:URLRequest = new URLRequest(url);
ldr.load(urlReq);
addChild(ldr);