diff --git a/js/ditto.js b/js/ditto.js
index f652fd1..3b604da 100644
--- a/js/ditto.js
+++ b/js/ditto.js
@@ -26,9 +26,9 @@ var disqusCode = '<h3>留言</h3><div id="disqus_thread"></div>'
 	+ " })();"
 	+ '</script>'; 
 
-var disqus_identifier;
+var disqus_identifier=location.hash;
 var disqus_title;
-var disqus_url;
+var disqus_url='http://'+location.host+'/'+location.hash.replace("#", "");
 
 function initialize() {
     // initialize sidebar and buttons