$("#id").click(function(){
    var url = "www.xxx.xxx";
        var title = "xxx";

        if (window.sidebar) { // Mozilla Firefox Bookmark
                window.sidebar.addPanel(title, url,"");
        } else if( window.external ) { // IE Favorite
                window.external.AddFavorite( url, title);
        } else if(window.opera) { // Opera 7+
                return false; // do nothing
        }
        else {
            alert('您的浏览器不支持,请按 Ctrl+D 手动收藏!');
        }
})