<a href="main.html" title="Главная" target="mainFrame">Главная</a>

btmain_mc.addEventListener(MouseEvent.CLICK,menubar_main);
function menubar_main(e:Event):void {
navigateToURL(new URLRequest("main.html")); }

var format:TextFormat = new TextFormat();
format.color = 0xffffff;
format.size = 40;
format.bold = true;
var myText:TextField = new TextField();
myText.defaultTextFormat = format;
myText.selectable = false;
myText.width = 240;
myText.x = 10;
myText.htmlText = '<a href="main.html" title="Главная" target="mainFrame">Главная</a>';
myText.defaultTextFormat = format;
myText.selectable = false;
addChild(myText);