function result(data)
                        {
                             var s = "";
                             $j('errors error', data).each(function () { s += $j(this).text() + "\n"; });
                             if (s == "")
                             {
                                 var errors = $j('error > error', data);
                                 if (errors.size() == 0)
                                 {
                                    registered = !registered;
                                    _update_subscribe_mode();
                                 }
                                 else
                                 {
                                     var errorInfo = "";
                                     $j.each(errors, function(i) {
                                         errorInfo += "\n* " + $j(errors[i]).text();
                                     }); 
                                     alert("<i18n:text i18n:key="PLUGINS_PAGE_SUBSCRIBE_FORM_ERROR_DESCRIPTION"  i18n:catalogue="plugin.page-subscription"/>" + errorInfo)
                                 }
                             }
                             else
                             {
                                 alert(s);
                             }
                         }