Added preference cookie

src/index.html

@@ -44,6 +44,27 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/fullPage.js/3.0.2/fullpage.min.js" integrity="sha384-6yU9abmAgbGzbp5/zFigT6Ltjr3M5b0gSE6XFSO+ZMMuS1AXZlyh2tqWSVgIHRu+" crossorigin="anonymous"></script>
     <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
 
+
+    <script type="text/javascript">
+    
+    function toProductionSite() {
+        var name="site-preference";
+        var value=0;
+        var days=30;
+        var expires = "";
+        if (days) {
+            var date = new Date();
+            date.setTime(date.getTime() + (days*24*60*60*1000));
+            expires = "; expires=" + date.toUTCString();
+        }
+        document.cookie = name + "=" + (value || "")  + expires + "; domain=.harambee.utwente.nl path=/";
+
+        window.location.href = "https://harambee.utwente.nl";
+    };
+
+    </script>
+
+
     <style>
         p {
             font-size: 120%;
@@ -215,7 +236,7 @@
                 <source src="video.mp4" type="video/mp4">
             </video>
 
-            <a href="https://harambee.utwente.nl" role="button" class="shadow regular-site btn btn-sm" aria-pressed="true">
+            <a href="#" onclick="toProductionSite()" role="button" class="shadow regular-site btn btn-sm" aria-pressed="true">
                 <i class="align-middle fas fa-rocket"></i>&nbsp; To the regular site
             </a>