diff --git a/codes/script.js b/codes/script.js
new file mode 100644
index 0000000..3ca2f99
--- /dev/null
+++ b/codes/script.js
@@ -0,0 +1,32 @@
+<script>
+/**
+ * Donau2Space – Newsletter Checkbox Guard
+ *
+ * Verhindert Formular-Submit ohne gesetzte Checkbox
+ * und deaktiviert den Submit-Button bis zur Zustimmung.
+ */
+document.addEventListener('DOMContentLoaded', () => {
+  document.querySelectorAll('.d2s-newsletter-wide').forEach(form => {
+    const cb  = form.querySelector('.d2s-checkbox input[type="checkbox"]');
+    const btn = form.querySelector('.d2s-btn');
+
+    if (!cb || !btn) return;
+
+    // Initialzustand
+    btn.disabled = !cb.checked;
+
+    // Button erst aktiv, wenn Checkbox aktiv
+    cb.addEventListener('change', () => {
+      btn.disabled = !cb.checked;
+    });
+
+    // Sicherheitsnetz: ohne Haken kein Submit
+    form.addEventListener('submit', (e) => {
+      if (!cb.checked) {
+        e.preventDefault();
+        cb.focus();
+      }
+    });
+  });
+});
+</script>
\ No newline at end of file