Jquery post authenticity_token is not sent

I have installed jquery-ujs driver and include jquery script in my view.

In my view I have the following function

$(function () {          $('#alert').click(function () {            $.ajax({           type: "POST",           data: ({ lat: this.getAttribute('data-lat'), lon: 22.3908355 }),           url: '/map/setc'           //dataType: 'script'          });            return false;          })        });

but during the post authenticity_token is not send.

Authenticity token is only send with form_tag. Is there anyway to use jQuery.ajaxSetup in order to append to the data the authenticity token?

I have found the solution according to the post http://henrik.nyh.se/2008/05/rails-authenticity-token-with-jquery I included in my application.js the following

$(document).ajaxSend(function(event, request, settings) {   if (typeof(AUTH_TOKEN) == "undefined") return;   // settings.data is a serialized string like "foo=bar&baz=boink" (or null)   settings.data = settings.data || "";   settings.data += (settings.data ? "&" : "") + "authenticity_token=" + encodeURIComponent(AUTH_TOKEN); });

so every time an ajax request is made authenticity_token is included in the request