diff --git a/src/mibew/configs/routing.yml b/src/mibew/configs/routing.yml
index cdccd8c3..436d5510 100644
--- a/src/mibew/configs/routing.yml
+++ b/src/mibew/configs/routing.yml
@@ -90,6 +90,13 @@ cron:
     path: /cron
     defaults: { _controller: Mibew\Controller\CronController::runAction }
 
+# A set of localization constants for the client side applications is generated
+# dynamically
+js_translation:
+    path: /locales/{locale}/translation.js
+    defaults:
+        _controller: Mibew\Controller\Localization\JsTranslationController::indexAction
+
 license:
     path: /license
     defaults: { _controller: Mibew\Controller\LicenseController::indexAction }
diff --git a/src/mibew/libs/classes/Mibew/Controller/Localization/JsTranslationController.php b/src/mibew/libs/classes/Mibew/Controller/Localization/JsTranslationController.php
new file mode 100644
index 00000000..af5fb4a4
--- /dev/null
+++ b/src/mibew/libs/classes/Mibew/Controller/Localization/JsTranslationController.php
@@ -0,0 +1,64 @@
+<?php
+/*
+ * This file is a part of Mibew Messenger.
+ *
+ * Copyright 2005-2014 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace Mibew\Controller\Localization;
+
+use Mibew\Controller\AbstractController;
+use Stash\Invalidation;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Generates translation file for a client side application.
+ */
+class JsTranslationController extends AbstractController
+{
+    /**
+     * Generates a JavaScript file with client-side localization constants.
+     *
+     * @param Request $request Incoming request.
+     * @return Response Prepared JavaScript file with client side localization
+     * constants.
+     */
+    public function indexAction(Request $request)
+    {
+        $locale = $request->attributes->get('locale');
+
+        $item = $this->getCache()->getItem('translation/js/' . $locale);
+        $content = $item->get(Invalidation::OLD);
+        if ($item->isMiss()) {
+            $item->lock();
+
+            $messages = load_messages($locale);
+            $content = sprintf(
+                '%s(%s);',
+                'Mibew.Localization.set',
+                json_encode($messages)
+            );
+
+            $item->set($content);
+        }
+
+        $response = new Response();
+        $response->headers->set('Content-Type', 'text/javascript');
+        $response->setContent($content);
+
+        return $response;
+    }
+}
diff --git a/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationController.php b/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationController.php
index 73ee1bc4..36bf250f 100644
--- a/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationController.php
+++ b/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationController.php
@@ -190,6 +190,9 @@ class TranslationController extends AbstractController
 
         save_message($target, $string['source'], $translation);
 
+        // Remove cached client side translations.
+        $this->getCache()->getItem('translation/js/' . $target)->clear();
+
         $page['saved'] = true;
         $page['title'] = getlocal("Translations");
         $page = array_merge(
diff --git a/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationImportController.php b/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationImportController.php
index c936e454..a4131752 100644
--- a/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationImportController.php
+++ b/src/mibew/libs/classes/Mibew/Controller/Localization/TranslationImportController.php
@@ -116,6 +116,9 @@ class TranslationImportController extends AbstractController
                 // Try to import new messages.
                 import_messages($target, $file->getRealPath(), $override);
 
+                // Remove cached client side translations.
+                $this->getCache()->getItem('translation/js/' . $target)->clear();
+
                 // The file is not needed any more. Remove it.
                 unlink($file->getRealPath());
             } catch (\Exception $e) {
diff --git a/src/mibew/styles/dialogs/default/templates_src/server_side/chat.handlebars b/src/mibew/styles/dialogs/default/templates_src/server_side/chat.handlebars
index 8b354d49..ac492117 100644
--- a/src/mibew/styles/dialogs/default/templates_src/server_side/chat.handlebars
+++ b/src/mibew/styles/dialogs/default/templates_src/server_side/chat.handlebars
@@ -22,6 +22,9 @@
         <script type="text/javascript" src="{{asset "js/compiled/default_app.js"}}"></script>
         <script type="text/javascript" src="{{asset "js/compiled/chat_app.js"}}"></script>
 
+        <!-- Localized string -->
+        <script type="text/javascript" src="{{route "js_translation" locale=currentLocale}}"></script>
+
         <!-- Add style scripts -->
         <script type="text/javascript" src="{{asset "@CurrentStyle/js/compiled/scripts.js"}}"></script>
 
@@ -30,43 +33,11 @@
         <script type="text/javascript"><!--
             // Localized strings for the core
             Mibew.Localization.set({
-                'Are you sure want to leave chat?': '{{#jsString}}{{l10n "Are you sure want to leave chat?"}}{{/jsString}}',
-                'Remote user is typing...': '{{#jsString}}{{l10n "Remote user is typing..."}}{{/jsString}}',
-                'Select answer...': '{{#jsString}}{{l10n "Select answer..."}}{{/jsString}}',
-                'Send message': '{{#jsString}}{{l10n "Send message"}}{{/jsString}}',
                 'chat.window.send_message_short_and_shortcut': '{{#jsString}}{{l10n "Send ({0})" send_shortcut}}{{/jsString}}',
-                'Close chat': '{{#jsString}}{{l10n "Close chat"}}{{/jsString}}',
-                'Refresh': '{{#jsString}}{{l10n "Refresh"}}{{/jsString}}',
-                'Send chat history by e-mail': '{{#jsString}}{{l10n "Send chat history by e-mail"}}{{/jsString}}',
-                'Redirect visitor to another operator': '{{#jsString}}{{l10n "Redirect visitor to another operator"}}{{/jsString}}',
-                'Visit history': '{{#jsString}}{{l10n "Visit history"}}{{/jsString}}',
-                'You are': '{{#jsString}}{{l10n "You are"}}{{/jsString}}',
-                'Change name': '{{#jsString}}{{l10n "Change name"}}{{/jsString}}',
-                'Turn off sound': '{{#jsString}}{{l10n "Turn off sound"}}{{/jsString}}',
-                'Turn on sound': '{{#jsString}}{{l10n "Turn on sound"}}{{/jsString}}',
-                'Powered by:': '{{#jsString}}{{l10n "Powered by:"}}{{/jsString}}',
-                'Close...': '{{#jsString}}{{l10n "Close..."}}{{/jsString}}',
-                'Choose Department:': '{{#jsString}}{{l10n "Choose Department:"}}{{/jsString}}',
-                'Department description:': '{{#jsString}}{{l10n "Department description:"}}{{/jsString}}',
-                'Your email': '{{#jsString}}{{l10n "Your email"}}{{/jsString}}',
-                'Your name': '{{#jsString}}{{l10n "Your name"}}{{/jsString}}',
-                'Message': '{{#jsString}}{{l10n "Message"}}{{/jsString}}',
-                'Close': '{{#jsString}}{{l10n "Close"}}{{/jsString}}',
-                'Sorry. None of the support team is available at the moment. <br/>Please leave a message and someone will get back to you shortly.': '{{#jsString}}{{l10n "Sorry. None of the support team is available at the moment. <br/>Please leave a message and someone will get back to you shortly."}}{{/jsString}}',
-                'Thank you for your message. We\'ll answer your query by email as soon as possible.': '{{#jsString}}{{l10n "Thank you for your message. We'll answer your query by email as soon as possible."}}{{/jsString}}',
                 'leavemessage.error.email.required': '{{#jsString}}{{localized.[email.required]}}{{/jsString}}',
                 'leavemessage.error.name.required': '{{#jsString}}{{localized.[name.required]}}{{/jsString}}',
                 'leavemessage.error.message.required': '{{#jsString}}{{localized.[message.required]}}{{/jsString}}',
                 'leavemessage.error.wrong.email': '{{#jsString}}{{localized.[wrong.email]}}{{/jsString}}',
-                'The letters you typed don\'t match the letters that were shown in the picture.': '{{#jsString}}{{l10n "The letters you typed don't match the letters that were shown in the picture."}}{{/jsString}}',
-                'Send': '{{#jsString}}{{l10n "Send"}}{{/jsString}}',
-                'Name:': '{{#jsString}}{{l10n "Name:"}}{{/jsString}}',
-                'Email:': '{{#jsString}}{{l10n "Email:"}}{{/jsString}}',
-                'Initial Question:': '{{#jsString}}{{l10n "Initial Question:"}}{{/jsString}}',
-                'Start Chat': '{{#jsString}}{{l10n "Start Chat"}}{{/jsString}}',
-                'Wrong email address.': '{{#jsString}}{{l10n "Wrong email address."}}{{/jsString}}',
-                'Live support': '{{#jsString}}{{l10n "Live support"}}{{/jsString}}',
-                'Thank you for contacting us. Please fill out the form below and click the Start Chat button.': '{{#jsString}}{{l10n "Thank you for contacting us. Please fill out the form below and click the Start Chat button."}}{{/jsString}}'
             });
             // Plugins localization
             Mibew.Localization.set({{{additional_localized_strings}}});
diff --git a/src/mibew/styles/pages/default/templates_src/server_side/users.handlebars b/src/mibew/styles/pages/default/templates_src/server_side/users.handlebars
index 9cc951fc..c668cefe 100644
--- a/src/mibew/styles/pages/default/templates_src/server_side/users.handlebars
+++ b/src/mibew/styles/pages/default/templates_src/server_side/users.handlebars
@@ -25,53 +25,15 @@
         <script type="text/javascript" src="{{asset "js/compiled/default_app.js"}}"></script>
         <script type="text/javascript" src="{{asset "js/compiled/users_app.js"}}"></script>
 
+        <!-- Localized string -->
+        <script type="text/javascript" src="{{route "js_translation" locale=currentLocale}}"></script>
+
         <!-- Plugins JavaScript files -->
         {{{additional_js}}}
 
 
         <!-- Localization constants -->
         <script type="text/javascript"><!--
-            // Localized strings for the core
-            Mibew.Localization.set({
-                'Click to chat with the visitor': "{{#jsString}}{{l10n 'Click to chat with the visitor'}}{{/jsString}}",
-                'Watch the chat': "{{#jsString}}{{l10n 'Watch the chat'}}{{/jsString}}",
-                'Ban this visitor': "{{#jsString}}{{l10n 'Ban this visitor'}}{{/jsString}}",
-                'Show menu >>': "{{#jsString}}{{l10n 'Show menu >>'}}{{/jsString}}",
-                'Hide menu >>': "{{#jsString}}{{l10n 'Hide menu >>'}}{{/jsString}}",
-                'A new visitor is waiting for an answer.': "{{#jsString}}{{l10n 'A new visitor is waiting for an answer.'}}{{/jsString}}",
-                'Tracked visitor\'s path': "{{#jsString}}{{l10n 'Tracked visitor\'s path'}}{{/jsString}}",
-                'Invite to chat': "{{#jsString}}{{l10n 'Invite to chat'}}{{/jsString}}",
-                'Away': "{{#jsString}}{{l10n 'Away'}}{{/jsString}}",
-                'Up to date': "{{#jsString}}{{l10n 'Up to date'}}{{/jsString}}",
-                'Set status as "Available"': "{{#jsString}}{{l10n 'Set status as "Available"'}}{{/jsString}}",
-                'Set status as "Away"': "{{#jsString}}{{l10n 'Set status as "Away"'}}{{/jsString}}",
-                'Name': "{{#jsString}}{{l10n 'Name'}}{{/jsString}}",
-                'Actions': "{{#jsString}}{{l10n 'Actions'}}{{/jsString}}",
-                'Visitor\'s address': "{{#jsString}}{{l10n 'Visitor\'s address'}}{{/jsString}}",
-                'State': "{{#jsString}}{{l10n 'State'}}{{/jsString}}",
-                'Operator': "{{#jsString}}{{l10n 'Operator'}}{{/jsString}}",
-                'Total time': "{{#jsString}}{{l10n 'Total time'}}{{/jsString}}",
-                'Waiting time': "{{#jsString}}{{l10n 'Waiting time'}}{{/jsString}}",
-                'Misc': "{{#jsString}}{{l10n 'Misc'}}{{/jsString}}",
-                'Actions': "{{#jsString}}{{l10n 'Actions'}}{{/jsString}}",
-                'Name': "{{#jsString}}{{l10n 'Name'}}{{/jsString}}",
-                'Visitor\'s address': "{{#jsString}}{{l10n 'Visitor\'s address'}}{{/jsString}}",
-                'First seen': "{{#jsString}}{{l10n 'First seen'}}{{/jsString}}",
-                'Last seen': "{{#jsString}}{{l10n 'Last seen'}}{{/jsString}}",
-                'Invited by': "{{#jsString}}{{l10n 'Invited by'}}{{/jsString}}",
-                'Invitation time': "{{#jsString}}{{l10n 'Invitation time'}}{{/jsString}}",
-                'Invitations / Chats': "{{#jsString}}{{l10n 'Invitations / Chats'}}{{/jsString}}",
-                'Misc': "{{#jsString}}{{l10n 'Misc'}}{{/jsString}}",
-                'There are no visitors ready to chat on your site at present time': "{{#jsString}}{{l10n 'There are no visitors ready to chat on your site at present time'}}{{/jsString}}",
-                'The list of visitors waiting is empty': "{{#jsString}}{{l10n 'The list of visitors waiting is empty'}}{{/jsString}}",
-                'In queue': "{{#jsString}}{{l10n 'In queue'}}{{/jsString}}",
-                'Waiting for operator': "{{#jsString}}{{l10n 'Waiting for operator'}}{{/jsString}}",
-                'In chat': "{{#jsString}}{{l10n 'In chat'}}{{/jsString}}",
-                'Closed': "{{#jsString}}{{l10n 'Closed'}}{{/jsString}}",
-                'Loading': "{{#jsString}}{{l10n 'Loading'}}{{/jsString}}",
-                '[spam]': "{{#jsString}}{{l10n '[spam]'}}{{/jsString}}",
-                'Network problems detected. Please refresh the page.': "{{#jsString}}{{l10n 'Network problems detected. Please refresh the page.'}}{{/jsString}}"
-            });
             // Plugins localization
             Mibew.Localization.set({{{additional_localized_strings}}});
         //--></script>