function update_values() {
        new Ajax.Request('#{R(ErrorValAjax)}', {
          method: 'get',
            onSuccess: function(transport) {
              var values = transport.responseText.split(\";\");

              document.getElementById(\"testdiv\").innerHTML = values[0];
            }
          });
        };
        
        update_values();
        new PeriodicalExecuter(update_values(), 3);"