From cc6c014125ad2d6c8a705f0d543069ce5802757e Mon Sep 17 00:00:00 2001
From: Dave Methvin <dave.methvin@gmail.com>
Date: Wed, 25 Jul 2012 21:44:44 -0400
Subject: [PATCH] Unbreak isHidden args, they're needed by the .filter() call.

---
 src/css.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/css.js b/src/css.js
index 744e7a545..85c73c090 100644
--- a/src/css.js
+++ b/src/css.js
@@ -43,7 +43,8 @@ function vendorPropName( style, name ) {
 	return origName;
 }
 
-function isHidden( elem ) {
+function isHidden( elem, el ) {
+	elem = el || elem;
 	return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument.documentElement, elem );
 }