From 3d0de29d5615c1b1d74c72e6272484961a4ba243 Mon Sep 17 00:00:00 2001
From: Dave Methvin <dave.methvin@gmail.com>
Date: Thu, 8 Sep 2011 15:03:40 -0400
Subject: [PATCH] Fix #6593. Don't trigger `change` event twice when simulating
 it on IE.

---
 src/event.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/event.js b/src/event.js
index 080e9d4749..4b50f93a2a 100644
--- a/src/event.js
+++ b/src/event.js
@@ -799,8 +799,8 @@ if ( !jQuery.support.changeBubbles ) {
 			jQuery._data( elem, "_change_data", val );
 		}
 
-		if ( val !== old && old != null ) {
-			simulate( "change", elem,  e, true );
+		if ( val !== old && old != null && elem.parentNode ) {
+			simulate( "change", elem.parentNode,  e, true );
 		}
 	},