From 51c9c416d42956d70b331b82c330d63e19d4ad1d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Lucas?= <sebastien@slucas.fr>
Date: Thu, 20 Jun 2013 11:11:01 +0200
Subject: [PATCH] Add a function to test if a variable is undefined.

---
 util.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/util.js b/util.js
index 3b3d559..e68d12e 100644
--- a/util.js
+++ b/util.js
@@ -23,6 +23,11 @@ function strformat () {
     return s;
 }
 
+function isDefined(x) {
+    var undefined;
+    return x !== undefined;
+}
+
 function getCurrentOption (option) {
     return $.cookie (option);
 }