def wait_for_ajax
    Selenium::WebDriver::Wait.new(:timeout => 60).until do
      sleep 1
      @selenium.execute_script("return jQuery.active") == 0
    end                
  end  
  
  
    public void waitForAjax() {

    new WebDriverWait(selenium, 60000) {
    }.until(new ExpectedCondition<Boolean>() {
      @Override
      public Boolean apply(WebDriver driverObject) {
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
        Long
            returnedValue =
            (Long) ((JavascriptExecutor) driverObject).executeScript("return jQuery.active");

        return returnedValue == 0;
      }

    });
  }