code: function (sortableElement) {
          var opts = addData(sortableElement, 'opts');
          var items = _filter(sortableElement.children, opts.items);
          var handles = _getHandles(items, opts.handle);
          addAttribute(sortableElement, 'aria-dropeffect', 'move');
          addData(sortableElement, '_disabled', 'false');
          addAttribute(handles, 'draggable', 'true');
          // @todo: remove this fix
          // IE FIX for ghost
          // can be disabled as it has the side effect that other events
          // (e.g. click) will be ignored
          if (opts.disableIEFix === false) {
              var spanEl = (document || window.document).createElement('span');
              if (typeof spanEl.dragDrop === 'function') {
                  addEventListener(handles, 'mousedown', function () {
                      if (items.indexOf(this) !== -1) {
                          this.dragDrop();
                      }
                      else {
                          var parent = this.parentElement;
                          while (items.indexOf(parent) === -1) {
                              parent = parent.parentElement;
                          }
                          parent.dragDrop();
                      }
                  });
              }
          }
      }
docs: Enable the sortable
  @param {HTMLElement} sortableElement a single sortable