anchor.diff:      querySelector('#linkResult').attributes['href'] = router.url('result');
   
       router.listen();
  +    
  +    scaffold = querySelector('#scaffold') as CoreScaffold;
     }
     
     showHome(RouteEvent e) {
  
positive.code: import 'package:polymer/polymer.dart';
  import 'package:route_hierarchical/client.dart';
  import 'dart:html';
  
  @CustomTag('sr-router')
  class SrRouter extends PolymerElement {
    
    SrRouter.created() : super.created() {
      print('created');
  
negative.code:   selectSection(String sectionSelector) {
      querySelectorAll('section').classes.remove('core-selected');
      querySelector(sectionSelector).classes.add('core-selected');
      scaffold.closeDrawer();
    }
  }
  