Flickr actionQueue fav handler

gistfile1.js

F.actionQueue.register('button-bar-fave', {
    interim: function(id) {
        var fave_button = document.getElementById(id);
        if (fave_button.className.search(/fave/) === -1) {
            fave_button.className = 'Butt ywa-track fave-button fave';
        } else {
            fave_button.className = 'Butt ywa-track fave-button';
        }
    },
    cleanup: function(id) {
        F.actionQueue['photo-button-bar'].toggle_fave();
    }
}, 'photo-button-bar');