public void OnLowButtonClicked()
{
graphicsController.SetLowQuality();
lowOff.gameObject.SetActive(false);
lowOn.gameObject.SetActive(true);
medOff.gameObject.SetActive(true);
medOn.gameObject.SetActive(false);
highOff.gameObject.SetActive(true);
highOn.gameObject.SetActive(false);
ultraOff.gameObject.SetActive(true);
ultraOn.gameObject.SetActive(false);
}