PHPMan–Live and learn

function addfavor(url,title) {
    if(confirm('确定添加收藏？')){
        var ua = navigator.userAgent.toLowerCase();
        if(ua.indexOf("msie 8")>-1){
            external.AddToFavoritesBar(url,title,'slice');//IE8
        }else{
            try {
                window.external.addFavorite(url, title);
            } catch(e) {
                try {
                    window.sidebar.addPanel(title, url, "");//firefox
                } catch(e) {
                    alert("加入收藏失败，请使用Ctrl+D进行添加");
                }
            }
        }
    }
    return false;
}