../blocks_horizontal/event.js"></script>
    <script src="../blocks_horizontal/wedo.js"></script>
    <script src="../blocks_horizontal/default_toolbox.js"></script>
    <script>
      'use strict';

      var fakeDragStack = [];
      var workspace = null;

      function start() {
        var soundsEnabled = null;
        if (sessionStorage) {
          // Restore sounds state.
          soundsEnabled = sessionStorage.getItem('soundsEnabled');
          if (soundsEnabled === null) {
            soundsEnab