switch (newstate){
  case 1:
   document.getElementById("playerinfo").innerHTML = "停止";
   break;
  case 2:
   document.getElementById("playerinfo").innerHTML = "暂停";
   break;
  case 3:
   document.getElementById("playerinfo").innerHTML = "正在播放";
   break;
  case 4:
   document.getElementById("playerinfo").innerHTML = "4";
   break;
  case 5:
   document.getElementById("playerinfo").innerHTML = "5";
   break;
  case 6:
   document.getElementById("playerinfo").innerHTML = "正在缓冲...";
   break;
  case 7:
   document.getElementById("playerinfo").innerHTML = "7";
   break;
  case 8:
   document.getElementById("playerinfo").innerHTML = "8";
   break;
  case 9:
   document.getElementById("playerinfo").innerHTML = "正在连接...";
   break;
  case 10:
   document.getElementById("playerinfo").innerHTML = "准备就绪，请点击播放按钮观看视频";
   break;
  case 11:
   document.getElementById("playerinfo").innerHTML = "11";
   break;
  default:
   document.getElementById("playerinfo").innerHTML = "";
}