function addfav(link, title) {
	NS4 = (document.layers) ? 1 : 0;
	IE4 = (document.all) ? 1 : 0;
	if (NS4) {
		alert('Press CTRL+B to bookmark this site')
	} else {
		window.external.AddFavorite(link, "City and Guilds - " + title);
	}
}