function startStopVideoAndAudio(
  flagNumber, videoTagId, audio) {
  if (videoPlayPauseFlag[flagNumber] == false) {
    videoTagId.play();
    audio[0].play();
    videoPlayPauseFlag[flagNumber] = true;
  } else {
    videoTagId.pause();
    audio[0].pause();
    videoPlayPauseFlag[flagNumber] = false;
  }
}