code: function restoreTextSelection() {
      $('#__dragtable_disable_text_selection__').remove();
      if (body_onselectstart_save) {
        $(document.body).attr('onselectstart', body_onselectstart_save);
      } else {
        $(document.body).removeAttr('onselectstart');
      }
      if (body_unselectable_save) {
        $(document.body).attr('unselectable', body_unselectable_save);
      } else {
        $(document.body).removeAttr('unselectable');
      }
    }
docs: remove the <style> tag, and restore the original <body> onselectstart attribute