old_contents: define([
      'backbone'
  ], function(Backbone) {
  
      return Backbone.View.extend({
  
          attributes: {
              style: 'display:none;'
          },
  
          show: function() {
              this.$el.show();
  
              this.$el.attr('data-pagename', this.pageName);      // for Selenium testing
  
              this.update();
          },
  
          hide: function() {
              this.$el.hide();
          },
  
          isVisible: function() {
              return this.$el.is(':visible');
          },
  
          update: $.noop,
  
          getSelectedRoute: $.noop
  
      });
  
  });
new_contents: define([
      'backbone'
  ], function(Backbone) {
  
      return Backbone.View.extend({
  
          attributes: {
              style: 'display:none;'
          },
  
          show: function() {
              this.$el.show();
  
              // for Selenium testing
              this.$el.attr('data-pagename', this.pageName);
  
              this.update();
          },
  
          hide: function() {
              this.$el.hide();
          },
  
          isVisible: function() {
              return this.$el.is(':visible');
          },
  
          update: $.noop,
  
          getSelectedRoute: $.noop
  
      });
  
  });
subject: Fix whitespace. [rev: trivial]