Странно... по идее весь код в первом кейфрейме на слое actions...

Код AS3:
send_mc.buttonMode = true;
var urlReq:URLRequest = new URLRequest("return.php");
var urlLoader:URLLoader = new URLLoader();
var urlVars:URLVariables = new URLVariables();
send_mc.addEventListener(MouseEvent.CLICK, sendName);
function sendName(event:MouseEvent):void
{
urlVars.userName = input_txt.text;
urlReq.data = urlVars;
urlLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
urlReq.method = URLRequestMethod.POST;
urlLoader.addEventListener(Event.COMPLETE, checkUserName);
try
{
urlLoader.load(urlReq);
}
catch(e:Error)
{
stat_txt.text = "ERROR!";
}
}
function checkUserName(event:Event):void
{
stat_txt.text = "FINISH!";
output_txt.text = urlLoader.data.user;
urlLoader.close();
}