Is this a valid url parameter in jquery.ajax(),

<script type="text/javascript">
   $(document).ready(function() {
    getRecordspage();
  });

  function getRecordspage() {
    $.ajax({
        type: "POST",
        url: "http://localhost/codeigniter_cup_myth/index.php/adminController/mainAccount",
        data: "",
        contentType: "application/json; charset=utf-8",
        global:false,
        async: false,
        dataType: "json",
        success: function(jsonObj) {
           alert(jsonobj);
        }
    });
}
 </script>

The url doesn't seem to go to my controller function...