function _setSubscribeForm() {
    var form = document.getElementById('subscribe-form');
    if (form) {
        var actDOM = form['_action'];
        var act;
        for (var i=0; i<actDOM.length; i++) {
            if (actDOM[i].checked) {
                act = actDOM[i].value;
                break;
            }
        }
        if (act == 'subscribe') {
            $('#sf-name-input-container').show();
        } else {
            $('#sf-name-input-container').hide();
        }
    }
}
window.setSubscribeForm = _setSubscribeForm;