js fix

index.html

@@ -28,6 +28,7 @@
         <link rel="icon" href="assets/afb/favicon.png" type="image/png">
         <link href="/assets/css/mrl.css" rel="stylesheet">
         <link href="/assets/fontawesome/css/all.css" rel="stylesheet">
+        <script type="text/javascript" src="/assets/js/mrl.js"></script>
         <!--- site-->
   <meta name="viewport" content="width=device-width, initial-scale=1" >
 </head>
@@ -98,15 +99,4 @@
     </section>
   </div>
 </body>
-
-<script>
-function hamburgermenuknopje() {
-  var x = document.getElementById('main_menu_01');
-  if (x.style.display === "block") {
-    x.style.display = "none";
-  } else {
-    x.style.display = "block";
-  }
-}
-</script>
 </html>