From f8ad8433659d24eacc2a3293ff9f5da43fedcd61 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Thu, 10 Apr 2014 22:49:49 -0400
Subject: [PATCH] Avoid warning about deprecated event.returnValue.

---
 unpacked/extensions/MathEvents.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/unpacked/extensions/MathEvents.js b/unpacked/extensions/MathEvents.js
index ff3c6ae98..fb67e60db 100644
--- a/unpacked/extensions/MathEvents.js
+++ b/unpacked/extensions/MathEvents.js
@@ -114,10 +114,9 @@
     False: function (event) {
       if (!event) {event = window.event}
       if (event) {
-        if (event.preventDefault) {event.preventDefault()}
+        if (event.preventDefault) {event.preventDefault()} else {event.returnValue = false}
         if (event.stopPropagation) {event.stopPropagation()}
         event.cancelBubble = true;
-        event.returnValue = false;
       }
       return false;
     },