jquery not following redirect

jquery not following redirect

hello , i am using wcf restful services by .net with jquery , and I am trying to redirect from a service...but jquery is getting the response but not following the redirect , here is my code...can someone tell me what's the error?? I am getting the html page back
 
this._Proxy = function (serviceURL, dataType, type, success, error) {
    //Sets the url to the given service url .
    this._URL = serviceURL;
    //Sets the dataType to the given type
    this._DataType = dataType == null || dataType == 'undefined' || dataType == '' ? defaultDataType : dataType;
    //Sets the type to the given type
    this._Type = type == null || type == 'undefined' || type == '' ? defaultType : type;
    //registers the success as success event handler
    this._Success = success;
    //registers the error as error event handler
    this._Error = error;









    this.Invoke = function () {
        $.ajax({
            url: this._URL,
            dataType: this._DataType,
            type: this._Type,
            success: function (s, xhr, status, data) {
                debugger;
                if (!success) {
                    return;
                }
                success(s, xhr, status, data);
                return;
            },
            error: function (jqXHR, textStatus, errorThrown) {
                if (!error) {
                    return;
                }
                var statusId = parseInt(jqXHR.status);
                if (statusId != 400) {
                    error(jqXHR, textStatus, errorThrown);
                }
                else {
                    error(jqXHR, jqXHR.statusText, errorThrown);
                }






















                return;
            }
        });
    }


}