diff --git a/layout/common/scripts.jsx b/layout/common/scripts.jsx
index a356020..0339842 100644
--- a/layout/common/scripts.jsx
+++ b/layout/common/scripts.jsx
@@ -34,6 +34,7 @@ module.exports = class extends Component {
             <script dangerouslySetInnerHTML={{ __html: `moment.locale("${language}");` }}></script>
             <script dangerouslySetInnerHTML={{ __html: embeddedConfig }}></script>
             {clipboard ? <script src={cdn('clipboard', '2.0.4', 'dist/clipboard.min.js')} defer={true}></script> : null}
+            <script src={url_for('/js/column.js')}></script>
             <Plugins site={site} config={config} page={page} helper={helper} head={false} />
             <script src={url_for('/js/main.js')} defer={true}></script>
         </Fragment>;
diff --git a/source/js/animation.js b/source/js/animation.js
index f147d8b..50c7c3f 100644
--- a/source/js/animation.js
+++ b/source/js/animation.js
@@ -3,12 +3,6 @@
         return Array.prototype.slice.call(document.querySelectorAll.apply(document, arguments));
     }
 
-    if ($('.columns .column-right').length && $('.columns .column-right-shadow').length && !$('.columns .column-right-shadow')[0].children.length) {
-        for (const child of $('.columns .column-right')[0].children) {
-            $('.columns .column-right-shadow')[0].append(child.cloneNode(true));
-        }
-    }
-
     $('body > .navbar, body > .section, body > .footer').forEach(element => {
         element.style.transition = '0s';
         element.style.opacity = '0';
diff --git a/source/js/column.js b/source/js/column.js
new file mode 100644
index 0000000..a39d8aa
--- /dev/null
+++ b/source/js/column.js
@@ -0,0 +1,12 @@
+(function() {
+    function $() {
+        return Array.prototype.slice.call(document.querySelectorAll.apply(document, arguments));
+    }
+
+    // copy widgets in the right column, when exist, to the bottom of the left column
+    if ($('.columns .column-right').length && $('.columns .column-right-shadow').length && !$('.columns .column-right-shadow')[0].children.length) {
+        for (const child of $('.columns .column-right')[0].children) {
+            $('.columns .column-right-shadow')[0].append(child.cloneNode(true));
+        }
+    }
+}());
diff --git a/source/js/main.js b/source/js/main.js
index 3efa91f..7f46128 100644
--- a/source/js/main.js
+++ b/source/js/main.js
@@ -20,10 +20,6 @@
         $('.justified-gallery').justifiedGallery();
     }
 
-    if (!$('.columns .column-right-shadow').children().length) {
-        $('.columns .column-right-shadow').append($('.columns .column-right').children().clone());
-    }
-
     if (typeof moment === 'function') {
         $('.article-meta time').each(function() {
             $(this).text(moment($(this).attr('datetime')).fromNow());