twttr.anywhere(
        function(twitter) {
            twitter.linkifyUsers();
        }
    );


    twttr.anywhere(
        function(twitter) {
            twitter.hovercards();
        }
    );
    twttr.anywhere(
        function(twitter) {
            if (twitter.isConnected()) {        // twitter.isConnected から変更。関数呼び出しなので () が必要
                currentUser = twitter.currentUser;        // twitter.User.current から変更。
                screenName = currentUser.data('screen_name');
                profileImage = currentUser.data('profile_image_url');
                profileImageTag = "<img src='" + profileImage + "'/>";
                document.getElementById('twitter_state').innerHTML
                    = "logged in as " + profileImageTag + " " + screenName;
            } else {
                twitter("#twitter_state").connectButton({ size: "small" });
            };
        }
    );
    twttr.anywhere(
        function(twitter) {
            twitter("#twitter_login").connectButton();
        }
    );
twttr.anywhere(function(twitter) {
    twitter("#followButton").followButton("AzabuAgora");
});