diff --git a/web/index.html b/web/index.html
index a22c713..19f3f15 100644
--- a/web/index.html
+++ b/web/index.html
@@ -106,7 +106,7 @@
            href="mailto:aed@openstreetmap.pl">Kontakt</a>
       </div>
       <div class="navbar-item px-1">
-        <button class="button is-white is-outlined" onclick="showSidebar2()" aria-label="Otwórz panel">
+        <button class="button is-white is-outlined" onclick="toggleSidebar2()" aria-label="Otwórz panel">
           <svg class="icon" style="width:24px;height:24px" viewBox="0 0 24 24">
             <path
               d="M12,15.5A3.5,3.5 0 0,1 8.5,12A3.5,3.5 0 0,1 12,8.5A3.5,3.5 0 0,1 15.5,12A3.5,3.5 0 0,1 12,15.5M19.43,12.97C19.47,12.65 19.5,12.33 19.5,12C19.5,11.67 19.47,11.34 19.43,11L21.54,9.37C21.73,9.22 21.78,8.95 21.66,8.73L19.66,5.27C19.54,5.05 19.27,4.96 19.05,5.05L16.56,6.05C16.04,5.66 15.5,5.32 14.87,5.07L14.5,2.42C14.46,2.18 14.25,2 14,2H10C9.75,2 9.54,2.18 9.5,2.42L9.13,5.07C8.5,5.32 7.96,5.66 7.44,6.05L4.95,5.05C4.73,4.96 4.46,5.05 4.34,5.27L2.34,8.73C2.21,8.95 2.27,9.22 2.46,9.37L4.57,11C4.53,11.34 4.5,11.67 4.5,12C4.5,12.33 4.53,12.65 4.57,12.97L2.46,14.63C2.27,14.78 2.21,15.05 2.34,15.27L4.34,18.73C4.46,18.95 4.73,19.03 4.95,18.95L7.44,17.94C7.96,18.34 8.5,18.68 9.13,18.93L9.5,21.58C9.54,21.82 9.75,22 10,22H14C14.25,22 14.46,21.82 14.5,21.58L14.87,18.93C15.5,18.67 16.04,18.34 16.56,17.94L19.05,18.95C19.27,19.03 19.54,18.95 19.66,18.73L21.66,15.27C21.78,15.05 21.73,14.78 21.54,14.63L19.43,12.97Z"
diff --git a/web/js/other-ui-stuff.js b/web/js/other-ui-stuff.js
index 3631061..0d45c80 100644
--- a/web/js/other-ui-stuff.js
+++ b/web/js/other-ui-stuff.js
@@ -343,6 +343,15 @@ function showSidebar(properties) {
         console.log('Sidebar not found.');
 }
 
+function toggleSidebar2() {
+    let sidebar = document.getElementById(sidebar2DivId);
+    if (sidebar.classList.contains('is-invisible')) {
+        showSidebar2();
+    } else {
+        sidebar.classList.add('is-invisible');
+    }
+}
+
 function showSidebar2() {
     let sidebar = document.getElementById(sidebar2DivId);
     if (sidebar) {