Update navigation links to point to employee-login.php and enhance login error handling

js/script.js

@@ -1,49 +1,51 @@
-document.getElementById('ticketForm').addEventListener('submit', function (e) {
-    e.preventDefault();
+// Check if the ticket form exists before adding an event listener
+const ticketForm = document.getElementById('ticketForm');
+if (ticketForm) {
+    ticketForm.addEventListener('submit', function (e) {
+        e.preventDefault();
 
-    const name = document.getElementById('name').value;
-    const email = document.getElementById('email').value;
-    const category = document.getElementById('ticketCategory').value;
-    const quantity = document.getElementById('ticketQuantity').value;
+        const name = document.getElementById('name').value;
+        const email = document.getElementById('email').value;
+        const category = document.getElementById('ticketCategory').value;
+        const quantity = document.getElementById('ticketQuantity').value;
 
-  
-    const ticketId = `TICKET-${Date.now()}`;
+        const ticketId = `TICKET-${Date.now()}`;
 
-    
-    const qrContent = `Name: ${name}, Email: ${email}, Category: ${category}, Quantity: ${quantity}, Ticket ID: ${ticketId}`;
+        const qrContent = `Name: ${name}, Email: ${email}, Category: ${category}, Quantity: ${quantity}, Ticket ID: ${ticketId}`;
 
-   
-    const qrCodeContainer = document.getElementById('qrCodeContainer');
-    qrCodeContainer.innerHTML = ''; 
-    const qrCode = new QRCode(qrCodeContainer, {
-        text: qrContent,
-        width: 200,
-        height: 200,
+        const qrCodeContainer = document.getElementById('qrCodeContainer');
+        qrCodeContainer.innerHTML = '';
+        const qrCode = new QRCode(qrCodeContainer, {
+            text: qrContent,
+            width: 200,
+            height: 200,
+        });
+
+        alert('Ticket(s) successfully generated!');
     });
+}
 
-    alert('Ticket(s) successfully generated!');
-});
-
+// Function to toggle video playback
 function toggleVideo() {
     const video = document.getElementById('myVideo');
-    if (video.paused) {
-      video.play();
-    } else {
-      video.pause();
+    if (video) {
+        if (video.paused) {
+            video.play();
+        } else {
+            video.pause();
+        }
     }
-  }
+}
 
-
-  document.getElementById('loginForm').addEventListener('submit', function (e) {
+document.getElementById('loginForm').addEventListener('submit', function (e) {
     e.preventDefault();
 
     const username = document.getElementById('username').value;
     const password = document.getElementById('password').value;
 
-   
     if (username === 'admin' && password === 'password') {
         alert('Succesvol ingelogd!');
-        window.location.href = '../qr/qr.html'; 
+        window.location.href = '../qr/qr.html';
     } else {
         alert('Ongeldige inloggegevens.');
     }