function onYouTubePlayerReady(player) {
  ytplayer = document.getElementById("ytplayer");
  if (ytplayer) {
    ytplayer.cueVideoById($video);
  }
}

function pauseVideo() {
  if (ytplayer.getPlayerState() == 2) {
    ytplayer.playVideo();
  } else {
    ytplayer.pauseVideo();
  }
}