From 432ea4ca6cbd63cd972718d3a44772fe8ef1022b Mon Sep 17 00:00:00 2001
From: Brandon Aaron <brandon.aaron@gmail.com>
Date: Wed, 22 Apr 2009 05:29:01 +0000
Subject: [PATCH] offset returns null for window and document elements. fixes
 #4136 again

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

diff --git a/src/offset.js b/src/offset.js
index 92eace90..964844e7 100644
--- a/src/offset.js
+++ b/src/offset.js
@@ -1,7 +1,7 @@
 if ( "getBoundingClientRect" in document.documentElement )
 	jQuery.fn.offset = function() {
 		var elem = this[0];
-		if ( !elem ) return null;
+		if ( !elem || !elem.ownerDocument ) return null;
 		if ( elem === elem.ownerDocument.body ) return jQuery.offset.bodyOffset( elem );
 		var box = elem.getBoundingClientRect(), doc = elem.ownerDocument, body = doc.body, docElem = doc.documentElement,
 			clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
@@ -12,7 +12,7 @@ if ( "getBoundingClientRect" in document.documentElement )
 else
 	jQuery.fn.offset = function() {
 		var elem = this[0];
-		if ( !elem ) return null;
+		if ( !elem || !elem.ownerDocument ) return null;
 		if ( elem === elem.ownerDocument.body ) return jQuery.offset.bodyOffset( elem );
 		jQuery.offset.initialize();