addAntiForgeryToken = function (data) {
    data.__RequestVerificationToken = $('#__AjaxAntiForgeryForm input[name=__RequestVerificationToken]').val();
    return data;
};

pushAntiForgeryToken = function (data) {
    var token = $('#__AjaxAntiForgeryForm input[name=__RequestVerificationToken]').val();
    data.push({name:'__RequestVerificationToken',value: token});
    return data;
};