diff --git a/index.html b/index.html
index 6242686..6e1606e 100644
--- a/index.html
+++ b/index.html
@@ -1,13 +1,13 @@
 <!DOCTYPE html>
-<html lang="">
+<html lang="zh-Hans-TW">
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>p5.js example</title>
+    <title>Wiwi Circle of Fifths</title>
     <style> body {padding: 0; margin: 0;} </style>
-    <script src="../p5.min.js"></script>
-    <script src="../addons/p5.dom.min.js"></script>
-    <script src="../addons/p5.sound.min.js"></script>
+    <script src="//cdnjs.cloudflare.com/ajax/libs/p5.js/0.8.0/p5.min.js"></script>
+    <script src="//cdnjs.cloudflare.com/ajax/libs/p5.js/0.8.0/addons/p5.dom.min.js"></script>
+    <script src="//cdnjs.cloudflare.com/ajax/libs/p5.js/0.8.0/addons/p5.sound.min.js"></script>
     <script src="sketch.js"></script>
   </head>
   <body>
