diff --git a/app-localize-behavior.html b/app-localize-behavior.html
index a990747..7448cd5 100644
--- a/app-localize-behavior.html
+++ b/app-localize-behavior.html
@@ -110,12 +110,30 @@
    * @event app-resources-error
    */
 
+  /**
+   * This event is fired when each instance of app-localize-behavior
+   * is created. It is useful for collecting the instances so that
+   * later a method can be called on each of them.  For an example,
+   * see demo/app-localize-behavior-mgr.html.
+   *
+   * @event app-localize-behavior-ready
+   */
+
+  /**
+   * This event is fired every time the language is changed.
+   * For an example of how this might be used,
+   * see demo/app-localize-behavior-mgr.html.
+   *
+   * @event app-language-changed
+   */
+
   properties: {
     /**
      * The language used for translation.
      */
     language: {
-      type: String
+      type: String,
+      observer: '__languageChanged'
     },
 
     /**
@@ -194,6 +212,10 @@
     }
   },
 
+  ready() {
+    this.fire('app-localize-behavior-ready', this);
+  },
+
   /**
    * Returns a computed `localize` method, based on the current `language`.
    */
@@ -227,6 +249,10 @@
     };
   },
 
+  __languageChanged: function() {
+    this.fire('app-language-changed', this.language);
+  },
+
   __onRequestResponse: function(event) {
     this.resources = event.response;
     this.fire('app-resources-loaded');
diff --git a/demo/app-localize-behavior-mgr.html b/demo/app-localize-behavior-mgr.html
new file mode 100644
index 0000000..18ef456
--- /dev/null
+++ b/demo/app-localize-behavior-mgr.html
@@ -0,0 +1,44 @@
+<link rel="import" href="../../polymer/polymer.html">
+
+<dom-module id="app-localize-behavior-mgr">
+  <template>
+    <content></content>
+  </template>
+
+  <script>
+    Polymer({
+      is: "app-localize-behavior-mgr",
+      properties: {
+        _instances: {
+          type: Array,
+          value: function () {
+            return [];
+          }
+        },
+        _lastLanguage: String
+      },
+
+      listeners: {
+        'app-localize-behavior-ready': '__addInstance',
+        'app-language-changed': '__changeLanguage'
+      },
+
+      __addInstance(event) {
+        this.push('_instances', event.detail);
+      },
+
+      __changeLanguage(event) {
+        var language = event.detail;
+        if (language === this._lastLanguage) {
+          return;
+        }
+
+        this._lastLanguage = language;
+
+        this._instances.forEach(function (instance) {
+          instance.language = language;
+        });
+      }
+    });
+  </script>
+</dom-module>
diff --git a/demo/index.html b/demo/index.html
index a25f461..6c4068a 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -20,6 +20,7 @@
     <link rel="import" href="../../paper-styles/typography.html">
     <link rel="import" href="x-translate.html">
     <link rel="import" href="x-local-translate.html">
+    <link rel="import" href="app-localize-behavior-mgr.html">
 
     <!-- Intl polyfill -->
     <script src="../../intl/dist/Intl.min.js"></script>
@@ -27,7 +28,9 @@
   </head>
 
   <body unresolved>
-    <x-translate></x-translate>
-    <x-local-translate></x-local-translate>
+    <app-localize-behavior-mgr>
+      <x-translate></x-translate>
+      <x-local-translate></x-local-translate>
+    </app-localize-behavior-mgr>
   </body>
 </html>
diff --git a/demo/x-local-translate.html b/demo/x-local-translate.html
index afd2014..7bb6406 100644
--- a/demo/x-local-translate.html
+++ b/demo/x-local-translate.html
@@ -47,7 +47,8 @@ <h4>This demo's resources are loaded statically, not from an external file.</h4>
         /* Overriden from AppLocalizeBehavior */
         language: {
           value: 'en',
-          type: String
+          type: String,
+          observer: '_changeLanguage'
         },
 
         /* Overriden from AppLocalizeBehavior */
@@ -76,6 +77,10 @@ <h4>This demo's resources are loaded statically, not from an external file.</h4>
         }
       },
 
+      _changeLanguage() {
+        this.$.switch.checked = this.language === 'fr';
+      },
+
       _toggle: function() {
         this.language = this.$.switch.checked ? 'fr' : 'en';
       }
diff --git a/demo/x-translate.html b/demo/x-translate.html
index cd90baa..0881792 100644
--- a/demo/x-translate.html
+++ b/demo/x-translate.html
@@ -70,7 +70,8 @@ <h4>{{localize('header_2')}}</h4>
         /* Overriden from AppLocalizeBehavior */
         language: {
           value: 'en',
-          type: String
+          type: String,
+          observer: '_changeLanguage'
         },
 
         /* Overriden from AppLocalizeBehavior */
@@ -88,6 +89,10 @@ <h4>{{localize('header_2')}}</h4>
         this.loadResources(this.resolveUrl('locales.json'));
       },
 
+      _changeLanguage() {
+        this.$.switch.checked = this.language === 'fr';
+      },
+
       _toggle: function() {
         this.language = this.$.switch.checked ? 'fr' : 'en';
       }
diff --git a/index.html b/index.html
index 0b14f7c..6330210 100644
--- a/index.html
+++ b/index.html
@@ -23,8 +23,6 @@
 
   </head>
   <body>
-
     <iron-component-page></iron-component-page>
-
   </body>
 </html>
