Fixed a issue when script was loaded before jquery

js/christmas.js

@@ -17,6 +17,18 @@ if (new Date().getMonth() === 11) {
 
     // Wait for the snowfall script and jQuery to load
     window.addEventListener('load', function () {
+        defer(proceedWithJquery);
+    });
+}
+
+function defer(method) {
+    if (window.jQuery)
+        method();
+    else
+        setTimeout(function() { defer(method) }, 50);
+}
+
+function proceedWithJquery() {
     $(document).snowfall({
         flakeCount: ($(document).width() > 992 ? 500 : 100),
         flakeIndex: -1,
@@ -30,5 +42,4 @@ if (new Date().getMonth() === 11) {
 
     // Change background artist in the footer
     $('#background-artist').html('<a href="http://www.publicdomainpictures.net/view-image.php?image=28562&picture=christmas-bulbs-red-background">Debi Geroux - Public Domain</a>');
-    });
 }