function add_favourite(url,title) {

	if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) {
		window.external.AddFavorite (url,title);
	}
	else
	{
		var msg = "Don't forget to bookmark us!";
		if(navigator.appName == "Netscape") msg += "  press (CTRL-D)";
		alert(msg);
	}
}