diff --git a/res/scripts/stdlib.lua b/res/scripts/stdlib.lua
index d8397f57..d00f34b5 100644
--- a/res/scripts/stdlib.lua
+++ b/res/scripts/stdlib.lua
@@ -180,6 +180,10 @@ function Document.new(docname)
     })
 end
 
+_GUI_ROOT = Document.new("core:root")
+_MENU = _GUI_ROOT.menu
+menu = _MENU
+
 -- Deprecated functions
 block_index = block.index
 block_name = block.name
diff --git a/src/engine.cpp b/src/engine.cpp
index 9d1543ea..f1d0665e 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -1,5 +1,40 @@
 #include "engine.h"
 
+#define GLEW_STATIC
+
+#include "assets/Assets.h"
+#include "assets/AssetsLoader.h"
+#include "audio/audio.h"
+#include "coders/GLSLExtension.h"
+#include "coders/json.h"
+#include "coders/png.h"
+#include "content/Content.h"
+#include "content/ContentLoader.h"
+#include "content/ContentPack.h"
+#include "core_defs.h"
+#include "files/engine_paths.h"
+#include "files/files.h"
+#include "frontend/locale/langs.h"
+#include "frontend/menu/menu.h"
+#include "frontend/screens.h"
+#include "frontend/UiDocument.h"
+#include "graphics/core/Batch2D.h"
+#include "graphics/core/GfxContext.h"
+#include "graphics/core/ImageData.h"
+#include "graphics/core/Shader.h"
+#include "graphics/ui/GUI.h"
+#include "graphics/ui/elements/UINode.h"
+#include "graphics/ui/elements/containers.h"
+#include "logic/scripting/scripting.h"
+#include "util/platform.h"
+#include "voxels/DefaultWorldGenerator.h"
+#include "voxels/FlatWorldGenerator.h"
+#include "window/Camera.h"
+#include "window/Events.h"
+#include "window/input.h"
+#include "window/Window.h"
+#include "world/WorldGenerators.h"
+
 #include <memory>
 #include <iostream>
 #include <assert.h>
@@ -8,40 +43,6 @@
 #include <filesystem>
 #include <unordered_set>
 #include <functional>
-#define GLEW_STATIC
-
-#include "audio/audio.h"
-#include "assets/Assets.h"
-#include "assets/AssetsLoader.h"
-#include "world/WorldGenerators.h"
-#include "voxels/DefaultWorldGenerator.h"
-#include "voxels/FlatWorldGenerator.h"
-#include "window/Window.h"
-#include "window/Events.h"
-#include "window/Camera.h"
-#include "window/input.h"
-#include "graphics/core/Batch2D.h"
-#include "graphics/core/GfxContext.h"
-#include "graphics/core/Shader.h"
-#include "graphics/core/ImageData.h"
-#include "graphics/ui/GUI.h"
-#include "frontend/screens.h"
-#include "frontend/menu/menu.h"
-#include "util/platform.h"
-
-#include "coders/json.h"
-#include "coders/png.h"
-#include "coders/GLSLExtension.h"
-#include "files/files.h"
-#include "files/engine_paths.h"
-
-#include "content/Content.h"
-#include "content/ContentPack.h"
-#include "content/ContentLoader.h"
-#include "frontend/locale/langs.h"
-#include "logic/scripting/scripting.h"
-
-#include "core_defs.h"
 
 namespace fs = std::filesystem;
 
@@ -63,8 +64,6 @@ Engine::Engine(EngineSettings& settings, EnginePaths* paths)
     audio::create_channel("ui");
 
     auto resdir = paths->getResources();
-    scripting::initialize(this);
-
     std::cout << "-- loading assets" << std::endl;
     std::vector<fs::path> roots {resdir};
 
@@ -92,6 +91,18 @@ Engine::Engine(EngineSettings& settings, EnginePaths* paths)
     }
     setLanguage(settings.ui.language);
     addWorldGenerators();
+    onAssetsLoaded();
+    
+    scripting::initialize(this);
+}
+
+void Engine::onAssetsLoaded() {
+    assets->store(new UiDocument(
+        "core:root", 
+        uidocscript {}, 
+        std::dynamic_pointer_cast<gui::UINode>(gui->getContainer()), 
+        nullptr
+    ), "core:root");
 }
 
 void Engine::updateTimers() {
@@ -236,6 +247,7 @@ void Engine::loadContent() {
         }
     }
     assets->extend(*new_assets.get());
+    onAssetsLoaded();
 }
 
 void Engine::loadWorldContent(const fs::path& folder) {
diff --git a/src/engine.h b/src/engine.h
index b48bbe02..9545efdf 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -56,6 +56,8 @@ public:
     /// Automatically sets MenuScreen
     void mainloop();
 
+    /// @brief Called after assets loading when all engine systems are initialized
+    void onAssetsLoaded();
     
     /// @brief Set screen (scene).
     /// nullptr may be used to delete previous screen before creating new one,
diff --git a/src/graphics/ui/GUI.cpp b/src/graphics/ui/GUI.cpp
index 273f021c..ad2dfa53 100644
--- a/src/graphics/ui/GUI.cpp
+++ b/src/graphics/ui/GUI.cpp
@@ -22,6 +22,7 @@ GUI::GUI() {
     uicamera->flipped = true;
 
     menu = std::make_shared<PagesControl>();
+    menu->setId("menu");
     container->add(menu);
     container->setScrollable(false);
 }
diff --git a/src/graphics/ui/elements/containers.cpp b/src/graphics/ui/elements/containers.cpp
index 33a83086..63a9d430 100644
--- a/src/graphics/ui/elements/containers.cpp
+++ b/src/graphics/ui/elements/containers.cpp
@@ -285,6 +285,10 @@ Page& PagesControl::getCurrent() {
     return current;
 }
 
+const std::string& PagesControl::getCurrentName() const {
+    return curname;
+}
+
 void PagesControl::clearHistory() {
     pageStack = std::stack<std::string>();
 }
diff --git a/src/graphics/ui/elements/containers.h b/src/graphics/ui/elements/containers.h
index d947b57d..9ea0802c 100644
--- a/src/graphics/ui/elements/containers.h
+++ b/src/graphics/ui/elements/containers.h
@@ -107,6 +107,7 @@ namespace gui {
         void reset();
     
         Page& getCurrent();
+        const std::string& getCurrentName() const;
     };
 }
 #endif // GRAPHICS_UI_ELEMENTS_CONTAINERS_H_
diff --git a/src/graphics/ui/gui_util.cpp b/src/graphics/ui/gui_util.cpp
index 23c6c42c..5f10b8db 100644
--- a/src/graphics/ui/gui_util.cpp
+++ b/src/graphics/ui/gui_util.cpp
@@ -7,6 +7,7 @@
 
 #include "../../logic/scripting/scripting.h"
 #include "../../frontend/locale/langs.h"
+#include "../../util/stringutil.h"
 #include "../../delegates.h"
 
 using namespace gui;
@@ -25,13 +26,11 @@ std::shared_ptr<Button> guiutil::gotoButton(
     std::shared_ptr<PagesControl> menu
 ) {
     text = langs::get(text, L"menu");
-    return std::make_shared<Button>(text, glm::vec4(10.f), [=](GUI* gui) {
-        if (menu->has(page)) {
-            menu->setPage(page);
-        } else {
-            menu->setPage("404");
-        }
-    });
+    return std::dynamic_pointer_cast<Button>(create(
+        "<button onclick='menu.page=\""+page+"\"' padding='10,10,10,10'>"+
+            util::wstr2str_utf8(text)+
+        "</button>"
+    ));
 }
 
 std::shared_ptr<gui::UINode> guiutil::create(const std::string& source) {
diff --git a/src/logic/scripting/lua/libgui.cpp b/src/logic/scripting/lua/libgui.cpp
index 7f981c11..cfbc1013 100644
--- a/src/logic/scripting/lua/libgui.cpp
+++ b/src/logic/scripting/lua/libgui.cpp
@@ -104,6 +104,16 @@ static bool getattr(lua_State* L, gui::FullCheckBox* box, const std::string& att
     return false;
 }
 
+static bool getattr(lua_State* L, gui::PagesControl* menu, const std::string& attr) {
+    if (menu == nullptr)
+        return false;
+    if (attr == "page") {
+        lua_pushstring(L, menu->getCurrentName().c_str());
+        return true;
+    }
+    return false;
+}
+
 static bool getattr(lua_State* L, gui::TextBox* box, const std::string& attr) {
     if (box == nullptr)
         return false;
@@ -162,6 +172,21 @@ static bool setattr(lua_State* L, gui::Label* label, const std::string& attr) {
     return false;
 }
 
+static bool setattr(lua_State* L, gui::PagesControl* menu, const std::string& attr) {
+    if (menu == nullptr)
+        return false;
+    if (attr == "page") {
+        auto page = lua_tostring(L, 4);
+        if (menu->has(page)) {
+            menu->setPage(page);
+        } else {
+            menu->setPage("404");
+        }
+        return true;
+    }
+    return false;
+}
+
 static int l_gui_getattr(lua_State* L) {
     auto docname = lua_tostring(L, 1);
     auto element = lua_tostring(L, 2);
@@ -194,6 +219,8 @@ static int l_gui_getattr(lua_State* L) {
         return 1;
     if (getattr(L, dynamic_cast<gui::FullCheckBox*>(node), attr))
         return 1;
+    if (getattr(L, dynamic_cast<gui::PagesControl*>(node), attr))
+        return 1;
 
     return 0;
 }
@@ -232,6 +259,8 @@ static int l_gui_setattr(lua_State* L) {
             return 0;
         if (setattr(L, dynamic_cast<gui::FullCheckBox*>(node), attr))
             return 0;
+        if (setattr(L, dynamic_cast<gui::PagesControl*>(node), attr))
+            return 0;
     }
     return 0;
 }