diff --git a/public/libs/showdown.js b/public/libs/showdown.js
index e0dd082..a3a8b8e 100644
--- a/public/libs/showdown.js
+++ b/public/libs/showdown.js
@@ -195,7 +195,7 @@ this.makeHtml = function (text) {
       return wholeMatch; 
     }
     href = wholeMatch.replace(/^http:\/\/github.com\//, "https://github.com/")
-    var urlreg = /(https?|ftp|mms):\/\/([A-z0-9]+[_\-]?[A-z0-9]+\.)*[A-z0-9]+\-?[A-z0-9]+\.[A-z]{2,}(\/.*)*\/?/;
+    var urlreg = /(https?|ftp|mms):\/\/((([A-z0-9]+[_\-]?[A-z0-9]+\.)*[A-z0-9]+\-?[A-z0-9]+\.[A-z]{2,})|(([0-9]{1,3}\.){3}[0-9]{1,3}))(\/.*)*\/?/;
     return "<a href='" + (urlreg.test(href)?href:("http://www.cnodejs.org"+href)) + "'>" + wholeMatch + "</a>";
   });
   text = text.replace(/[a-z0-9_\-+=.]+@[a-z0-9\-]+(\.[a-z0-9-]+)+/ig, function(wholeMatch){return "<a href='mailto:" + wholeMatch + "'>" + wholeMatch + "</a>";});