text: function onKeyPress(key) {
      if (key == NEXT) {
          var nextbutton = document.querySelector('div.player_wrapper > a.next');
          simulateClick(nextbutton);
      } else if (key == PREV) {
          var prevbutton = document.querySelector('div.player_wrapper > a.prev');
          simulateClick(prevbutton);
      } else if (key == PLAY) {
          var playbutton = document.querySelector('div.player_wrapper > a.playPause.pause');
          var pausebutton = document.querySelector('div.player_wrapper > a.playPause.play');
          if (playbutton)
              simulateClick(playbutton);
          else
              simulateClick(pausebutton);
      }
  }
  