function getVideoPath(){    
    var videoPath = document.location.toString();
    if(videoPath.indexOf('p_video') == -1){
      return;
    }
    videoPath = videoPath.substring(videoPath.indexOf('p_video'));
    videoPath = videoPath.indexOf('&') != -1 ? videoPath.substring(0, videoPath.indexOf('&') ) : videoPath;
    videoPath = videoPath.substring(videoPath.indexOf('=') + 1);    
    return videoPath;
  }