--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config.js	Sun Mar 20 11:53:21 2016 +0800
@@ -0,0 +1,4 @@
+_(Tram.config).extend({
+//    host: location.host,
+//    domain: location.hostname
+});

--- a/register.html	Sun Mar 20 11:52:25 2016 +0800
+++ b/register.html	Sun Mar 20 11:53:21 2016 +0800
@@ -87,6 +87,7 @@
 
     <script src='/js/tram.js'></script>
     <script src='/js/validation.js'></script>
+    <script src='/config.js'></script>
     <script src='/js/register.js'></script>
   </body>
 </html>