btnName.onRelease = function():Void{
    this.getURL("http://www.arabteam2000.com", "_blank");
}

function navigateLink(evtHandle:MouseEvent):void {
    var rURL:URLRequest = new URLRequest("http://www.arabteam2000.com");
    navigateToURL(rURL);
}

btnName.addEventListener(MouseEvent.CLICK, navigateLink);