import fl.controls.*;
import fl.events.*;

var botao:Button = new Button();
botao.label ="Clique Aqui!";
botao.setSize(200, 25);
botao.move(10, 10);
addChild(botao);
 
botao.addEventListener(MouseEvent.CLICK, jsAlertWindow);

function jsAlertWindow(event:MouseEvent):void{
	var alert:URLRequest = new URLRequest("javascript:alert('Hello World!')");
	navigateToURL(alert, "_self");
}