Radio Button & ajax_load

Radio Button & ajax_load

Hi

i try to send a value from an radio button. But the script doesent work because the value was not send.
Any idea to solve this problem?
  1.   $(function () {
         $('#id_radio').click(function () {
              var checkedradio = $('[name="id_radio"]:radio:checked').val();
             $("#div_container").html(ajax_load).load("my_url");
          });
        });