<script type="text/javascript">
 
        function updateHTML(elmId, value) {
          document.getElementById(elmId).innerHTML = value;
        }
 
        function setytplayerState(newState) {
          var nst="";
          if(newState == -1){nst = "未開始";}
          else if(newState == 0){nst = "終了";} 
          else if(newState == 1){nst = "再生中";} 
          else if(newState == 2){nst = "一時停止中";} 
          else if(newState == 3){nst = "バッファ中";}
          else if(newState == 5){nst = "動画キュー";}
          updateHTML("playerstate", nst);
        }
 
        //function onYouTubePlayerReady(playerId) {
        //  ytplayer = document.getElementById("myytplayer");
        //  setInterval(updateytplayerInfo, 250);
        //  updateytplayerInfo();
        //  ytplayer.addEventListener("onStateChange", "onytplayerStateChange");
        //  ytplayer.addEventListener("onError", "onPlayerError");
        //}
 
        function onPlayerError(errorCode) {
          alert("An error occured: " + errorCode);
        }
 
        function onytplayerStateChange(newState) {
          setytplayerState(newState);
        }
 
        function updateytplayerInfo() {
          updateHTML("bytesloaded", getBytesLoaded());
          updateHTML("bytestotal", getBytesTotal());
          updateHTML("videoduration", getDuration());
          updateHTML("videotime", getCurrentTime());
          updateHTML("startbytes", getStartBytes());
          updateHTML("volume", getVolume());
        }
 
        // functions for the api calls
        function loadNewVideo(id, startSeconds) {
          if (ytplayer) {
            ytplayer.loadVideoById(id, parseInt(startSeconds));
          }
        }
 
        function cueNewVideo(id, startSeconds) {
          if (ytplayer) {
            ytplayer.cueVideoById(id, startSeconds);
          }
        }
 
        function play() {
          if (ytplayer) {
            ytplayer.playVideo(); ytplayer1.playVideo();
          }
        }
 
        function pause() {
          if (ytplayer) {
            ytplayer.pauseVideo();
          }
        }
 
        function stop() {
          if (ytplayer) {
            ytplayer.stopVideo();
          }
        }
 
        function getPlayerState() {
          if (ytplayer) {
            return ytplayer.getPlayerState();
          }
        }
 
        function seekTo(seconds) {
          if (ytplayer) {
            ytplayer.seekTo(seconds, true);
          }
        }
 
        function getBytesLoaded() {
          if (ytplayer) {
            return ytplayer.getVideoBytesLoaded();
          }
        }
 
        function getBytesTotal() {
          if (ytplayer) {
            return ytplayer.getVideoBytesTotal();
          }
        }
 
        function getCurrentTime() {
          if (ytplayer) {
            return ytplayer.getCurrentTime();
          }
        }
 
        function getDuration() {
          if (ytplayer) {
            return ytplayer.getDuration();
          }
        }
 
        function getStartBytes() {
          if (ytplayer) {
            return ytplayer.getVideoStartBytes();
          }
        }
 
        function mute() {
          if (ytplayer) {
            ytplayer.mute();
          }
        }
 
        function unMute() {
          if (ytplayer) {
            ytplayer.unMute();
          }
        }
        
        function getEmbedCode() {
          alert(ytplayer.getVideoEmbedCode());
        }
 
        function getVideoUrl() {
          alert(ytplayer.getVideoUrl());
        }
        
        function setVolume(newVolume) {
          if (ytplayer) {
            ytplayer.setVolume(newVolume);
          }
        }
 
        function getVolume() {
          if (ytplayer) {
            return ytplayer.getVolume();
          }
        }
 
        function clearVideo() {
          if (ytplayer) {
            ytplayer.clearVideo();
          }
        }
        
 
    </script>