diff --git a/src/js/vocabulary.js b/src/js/vocabulary.js
index 2f32af68..4617dd68 100644
--- a/src/js/vocabulary.js
+++ b/src/js/vocabulary.js
@@ -1,37 +1,43 @@
 const exploreButton = document.querySelector('button.explore');
 const explorePanel = document.querySelector('.explore-panel');
 
-// explorePanel.classList.add('hide');
-if(exploreButton!==null && explorePanel!==null) {
-    exploreButton.addEventListener('click', (event) => {
-        explorePanel.classList.toggle('expand');
-        // explorePanel.classList.toggle('hide');
-    });
-}
-
+exploreButton.addEventListener('click', (event) => {
+    explorePanel.classList.toggle('expand');
 
+    // Toggle button text between 'View' and 'Close'
+    if (explorePanel.classList.contains('expand')) {
+        exploreButton.textContent = 'Close';
+    } else {
+        exploreButton.textContent = 'View';
+    }
+});
 
 const menuButton = document.querySelector('button.expand-menu');
 const menuPanel = document.querySelector('.primary-menu');
 
-if(menuButton !== null && menuPanel !== null) {
-    menuButton.addEventListener('click', (event) => {
-        menuPanel.classList.toggle('expand');
-        // explorePanel.classList.toggle('hide');
-    });
-}
-
+menuButton.addEventListener('click', (event) => {
+    menuPanel.classList.toggle('expand');
 
+    // Toggle button text between 'View' and 'Close'
+    if (menuPanel.classList.contains('expand')) {
+        menuButton.textContent = 'Close';
+    } else {
+        menuButton.textContent = 'View';
+    }
+});
 
 const attributionButton = document.querySelector('button.expand-attribution');
 const attributionPanel = document.querySelector('.attribution-panel');
 
-if (attributionButton !== null && attributionPanel !== null ) {
-
+if (attributionButton !== null && attributionPanel !== null) {
     attributionButton.addEventListener('click', (event) => {
-        attributionButton.classList.toggle('selected');
         attributionPanel.classList.toggle('expand');
-        // explorePanel.classList.toggle('hide');
-    });
 
-}
+        // Toggle button text between 'View' and 'Close'
+        if (attributionPanel.classList.contains('expand')) {
+            attributionButton.textContent = 'Close';
+        } else {
+            attributionButton.textContent = 'View';
+        }
+    });
+}
\ No newline at end of file