diff --git a/examples/options-default.html b/examples/options-default.html
index ed785b6..9a26fc2 100644
--- a/examples/options-default.html
+++ b/examples/options-default.html
@@ -16,6 +16,11 @@
         "use strict";
         $('#Default').perfectScrollbar();
       });
+      var updateSize = function () {
+        var width = parseInt($('#width').val(), 10);
+        var height = parseInt($('#height').val(), 10);
+        $('#Default').width(width).height(height).perfectScrollbar('update');
+      };
     </script>
   </head>
   <body>
@@ -23,6 +28,11 @@
       <div class="content">
       </div>
     </div>
+    <p style='text-align: center'>
+      Width <input type='text' id='width' value='600'>
+      Height <input type='text' id='height' value='400'>
+      <button onclick='updateSize()'>Change!</button>
+    </p>
   </body>
 </html>
 
