From 9ced0274653b8b17ceb6b0675e2ae05433dcf202 Mon Sep 17 00:00:00 2001
From: Mike Sherov <mike.sherov@gmail.com>
Date: Sun, 30 Sep 2012 17:41:42 -0400
Subject: Fix #12537, element.css('filter') returns undefined in IE9. Close
 gh-942.

---
 src/css.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/css.js b/src/css.js
index 9e72073eb..403516e0f 100644
--- a/src/css.js
+++ b/src/css.js
@@ -290,7 +290,9 @@ if ( window.getComputedStyle ) {
 
 		if ( computed ) {
 
-			ret = computed[ name ];
+			// getPropertyValue is only needed for .css('filter') in IE9, see #12537
+			ret = computed.getPropertyValue( name ) || computed[ name ];
+
 			if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
 				ret = jQuery.style( elem, name );
 			}
-- 
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