diff --git a/TBO/ApplicationLibrary.cs b/TBO/ApplicationLibrary.cs
index 573bb4e..22c27bf 100644
--- a/TBO/ApplicationLibrary.cs
+++ b/TBO/ApplicationLibrary.cs
@@ -1,25 +1,50 @@
 using System.Drawing;
 using TBO.i18n;
+using TBO.UI;
 using TBO.UI.tboTK;
 
 namespace TBO
 {
     class ApplicationLibrary : Application
     {
-        Button btFullscreen = new Button("btFullscreen") { Image = Properties.Resources.screen_full_256, Top = 5 };
+        Button btFullscreen = new Button("btFullscreen") { Image = Properties.Resources.screen_full, Top = 5 };
+        Button btClose = new Button("btClose") { Image = Properties.Resources.x, Top = 5, Visible = Shell.FullScreen };
         Panel pLib = new Panel("pLib") { Width = 500 };
+
         public ApplicationLibrary()
         {
             Add(btFullscreen);
+            Add(btClose);
+
+            btFullscreen.DoClick = btFullscreenClick;
+            btClose.DoClick = btCloseClick;
         }
 
         public override void ResizeTo(Size size)
         {
-            btFullscreen.Left = size.Width - (btFullscreen.Width + 5);
+            if (btClose.Visible)
+            {
+                btFullscreen.Left = size.Width - (btFullscreen.Width * 2 + 10);
+                btClose.Left = size.Width - (btClose.Width + 5);
+            }
+            else
+                btFullscreen.Left = size.Width - (btFullscreen.Width + 5);
             pLib.Height = size.Height;
             pLib.Left = (size.Width - pLib.Width) / 2;
         }
 
+        private void btFullscreenClick(Control c, Event e)
+        {
+            bool nfs = !Shell.FullScreen;
+            btClose.Visible = nfs;
+            Shell.FullScreen = nfs;
+        }
+
+        private void btCloseClick(Control c, Event e)
+        {
+            Shell.DoClose?.Invoke();
+        }
+
         public static string ApplicationId = "Library";
         public override string Id => ApplicationId;
         public override string Title => I18n.Lang.Library;
diff --git a/TBO/TBO.csproj b/TBO/TBO.csproj
index 9073526..214cb5d 100644
--- a/TBO/TBO.csproj
+++ b/TBO/TBO.csproj
@@ -125,9 +125,10 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="Resources\comicbg.png" />
-    <None Include="Resources\jump-left-256.png" />
-    <None Include="Resources\jump-right-256.png" />
-    <None Include="Resources\screen-full-256.png" />
+    <None Include="Resources\chevron-left.png" />
+    <None Include="Resources\chevron-right.png" />
+    <None Include="Resources\screen-full.png" />
+    <None Include="Resources\x.png" />
     <Content Include="tbo.ico" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />