Code to enable download button on LostFilm.tv series page

runOnSeriesPage.js

(function() {
  var data = document.getElementsByClassName("mark-rate-pane")[0].getAttribute("rel").split(",");

  if (document.getElementsByClassName("external-btn2").length !== 0) {
    window.copyrightedEpisode = undefined;
    var episode = "";
    
    for (var i = 0; i < data.length; i++) {
      episode += ('00' + data[i]).slice(-3);
    }
    
    document.getElementsByClassName("external-btn2")[0].setAttribute("onclick", "PlayEpisode(" + episode + ")");
    document.getElementsByClassName("external-btn2")[0].setAttribute("class", "external-btn");
  }
})();