diff --git a/WebApplication/Application.cpp b/WebApplication/Application.cpp
index ab7e1ad..9f37c4c 100644
--- a/WebApplication/Application.cpp
+++ b/WebApplication/Application.cpp
@@ -24,7 +24,8 @@
 #include <format>
 
 namespace WebToolkit {
-Application::Application(const Wt::WEnvironment &env, bool embedded) : Wt::WApplication(env) {
+Application::Application(const Wt::WEnvironment &env, bool embedded)
+    : Wt::WApplication(env), m_startup(this, "startup"), m_logout(this, "logout") {
     messageResourceBundle().use(appRoot() + "wt");
     messageResourceBundle().use(appRoot() + "auth_strings");
     messageResourceBundle().use(appRoot() + "auth_css_theme");
@@ -33,6 +34,7 @@ Application::Application(const Wt::WEnvironment &env, bool embedded) : Wt::WAppl
     m_session = Database::session();
     m_session->login().changed().connect(this, &Application::authEvent);
     setTheme(std::make_shared<BulmaTheme>("bulma", !embedded));
+    std::string externalPath;
     if (!embedded) {
         m_navigationBar = root()->addNew<NavigationBar>();
         m_navigationBar->registerClicked.connect([this]() {
@@ -54,10 +56,10 @@ Application::Application(const Wt::WEnvironment &env, bool embedded) : Wt::WAppl
             LOG(error) << "Missing: parameter: 'div'";
             m_root = nullptr;
         }
-        auto externalPath = env.getParameter("path");
-        if (externalPath != nullptr) {
-            m_externalPath = *externalPath;
-            LOG(info) << "external path: " << m_externalPath;
+        auto path = env.getParameter("path");
+        if (path != nullptr) {
+            externalPath = *path;
+            LOG(info) << "external path: " << externalPath;
         } else {
             auto parameters = env.getParameterMap();
             for (auto &p : parameters) {
@@ -74,14 +76,27 @@ Application::Application(const Wt::WEnvironment &env, bool embedded) : Wt::WAppl
 
     auto app = Amass::Singleton<WebToolkit::Server>::instance();
     m_loginPage = std::make_unique<LoginPage>(app->authService(), m_session->users(), m_session->login());
-    if (m_externalPath.empty()) {
+    if (externalPath.empty()) {
         m_loginPage->processEnvironment();
     } else {
-        m_loginPage->processExternalEnvironment(m_externalPath, app->authService());
+        m_loginPage->processExternalEnvironment(externalPath, app->authService());
     }
-
-    handlePathChange(m_externalPath.empty() ? internalPath() : m_externalPath);
+    m_logout.connect([this]() {
+        LOG(info) << "logout from external callbak.";
+        m_session->login().logout();
+    });
+    m_startup.connect(this, [externalPath]() {
+        LOG(info) << "wtapp started.";
+        auto app = Wt::WApplication::instance();
+        auto path = externalPath.empty() ? app->internalPath() : externalPath;
+        if (path != app->internalPath()) {
+            app->setInternalPath(externalPath.empty() ? app->internalPath() : externalPath, true);
+        } else {
+            dynamic_cast<Application *>(app)->handlePathChange(path);
+        }
+    });
     internalPathChanged().connect(this, &Application::handlePathChange);
+    doJavaScript(m_startup.createCall({}));
 }
 
 Application::~Application() {
@@ -119,8 +134,13 @@ void Application::authEvent() {
             setCookie(cookie);
         }
     } else {
-        m_loginPage = m_navigationBar->removeLoginItem();
-        LOG(info) << "User logged out.";
+        if (m_navigationBar != nullptr) {
+            m_loginPage = m_navigationBar->removeLoginItem();
+        }
+        LOG(info) << "user logged out, internal path: " << internalPath();
+        if (internalPath() == "/wt/login") {
+            handlePathChange(internalPath());
+        }
     }
     doJavaScript("if (window.updateAuthStatus) window.updateAuthStatus();");
 }
diff --git a/WebApplication/Application.h b/WebApplication/Application.h
index 362ea47..48f0684 100644
--- a/WebApplication/Application.h
+++ b/WebApplication/Application.h
@@ -36,12 +36,13 @@ protected:
 
 private:
     std::unique_ptr<Session> m_session;
-    std::string m_externalPath;
+    Wt::JSignal<> m_startup;
 
     Wt::WContainerWidget *m_root = nullptr;
     NavigationBar *m_navigationBar = nullptr;
     std::unique_ptr<LoginPage> m_loginPage;
     LoginPage *m_loginPageRef = nullptr;
+    Wt::JSignal<> m_logout;
 };
 
 class Server {
diff --git a/WebApplication/HomePage.cpp b/WebApplication/HomePage.cpp
index b26fd99..c13def8 100644
--- a/WebApplication/HomePage.cpp
+++ b/WebApplication/HomePage.cpp
@@ -11,10 +11,13 @@ HomePage::HomePage() {
 
     auto ul = addWidget(std::make_unique<Wt::WContainerWidget>());
     ul->setList(true);
-    auto li = ul->addWidget(std::make_unique<Wt::WText>(R"(<a href="/wt/login">登录页面</a>)"));
+    auto li = ul->addNew<Wt::WContainerWidget>();
     li->setHtmlTagName("li");
-    li = ul->addWidget(std::make_unique<Wt::WText>(R"(<a href="/wt/visitor/analysis">访客数据</a>)"));
+    li->addNew<Wt::WAnchor>(Wt::WLink(Wt::LinkType::InternalPath, "/wt/login"), "登录页面");
+
+    li = ul->addNew<Wt::WContainerWidget>();
     li->setHtmlTagName("li");
+    li->addNew<Wt::WAnchor>(Wt::WLink(Wt::LinkType::InternalPath, "/wt/visitor/analysis"), "访客数据");
 
     addWidget(std::make_unique<Wt::WText>("Your name, please ? "));
     m_nameEdit = addWidget(std::make_unique<Wt::WLineEdit>());