code: function append_trial(data, metadata, element) {
      var div = document.createElement('div');
      element.append(div);
      var graph = new trial.TrialGraph('trial-' + utils.makeid(), div, {
        width: data.width,
        height: data.height
      });
      graph.load(data, data.trial1, data.trial2);
      return div;
    }
docs: /* Trial mime