diff --git a/templates/_base.html b/templates/_base.html
index 7d451e1..9a1be1f 100644
--- a/templates/_base.html
+++ b/templates/_base.html
@@ -210,12 +210,32 @@
     </script>
 
     <script>
+      function deviceIsMobile() {
+        // https://coderwall.com/p/i817wa/one-line-function-to-detect-mobile-devices-with-javascript
+        return (
+          (typeof window.orientation !== 'undefined') ||
+          navigator.userAgent.match(/Android/i) ||
+          navigator.userAgent.match(/webOS/i) ||
+          navigator.userAgent.match(/iPhone/i) ||
+          navigator.userAgent.match(/iPad/i) ||
+          navigator.userAgent.match(/iPod/i) ||
+          navigator.userAgent.match(/BlackBerry/i) ||
+          navigator.userAgent.match(/Windows Phone/i) ||
+          (navigator.userAgent.indexOf('IEMobile') !== -1)
+        );
+      };
+
       (function () {
         var mywindow = $(window);
         var mypos = mywindow.scrollTop();
         var up = false;
         var newscroll;
         var navbarSupportedContent = $('#navbarSupportedContent');
+
+        if (!deviceIsMobile()) {
+          return;
+        }
+
         mywindow.scroll(function () {
           newscroll = mywindow.scrollTop();
           if (newscroll < 30) {