From 1535546d7d6fac0d002e9b3fa16c580be386336e Mon Sep 17 00:00:00 2001
From: Rouslan Placella <rouslan@placella.com>
Date: Mon, 19 Nov 2012 21:38:43 +0000
Subject: [PATCH] Fixed JS error

---
 js/navigation.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/navigation.js b/js/navigation.js
index f8370c7e5c..abc6e3e898 100644
--- a/js/navigation.js
+++ b/js/navigation.js
@@ -609,7 +609,7 @@ var ResizeHandler = function () {
      * @return void
      */
     this.mousemove = function (event) {
-        if (event.data.resize_handler.active) {
+        if (event.data && event.data.resize_handler && event.data.resize_handler.active) {
             event.preventDefault();
             var pos = event.data.resize_handler.getPos(event);
             event.data.resize_handler.setWidth(pos);