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