import flash.net.navigateToURL;
import flash.net.URLRequest;
const LINK_URL:String = “http://www.yahoo.co.jp”;
Link_btn.addEventListener(MouseEvent.CLICK,xLinkClick);
function xLinkClick(evt:MouseEvent):void{
var urlReq:URLRequest = new URLRequest(LINK_URL);
navigateToURL(urlReq,”_blank”);
}