function updateHTML(elmId, value) {
              document.getElementById(elmId).innerHTML = value;
            }

            function setytplayerState(newState) {
              updateHTML("playerstate", newState);
            }

            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() {

            }

            // 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();
              }
            }

            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();
              }
            }
            
    		function onytplayerStateChange(newState) {
    			if(newState == 0) {
    				window.location.href = 'http://www.idirittialzanolavoce.org/intro/';
    			}
    			//alert("Player's new state: " + newState);
    		}