From 6bec6199c255b4fd3fa11b4682d97f2d0658ea4d Mon Sep 17 00:00:00 2001
From: John Resig <jeresig@gmail.com>
Date: Wed, 9 Dec 2009 20:37:14 -0800
Subject: [PATCH] Work around a weird computed number issue in WebKit. Fixes
 #5145.

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

diff --git a/src/support.js b/src/support.js
index 8e8d20e0e..91ee77d39 100644
--- a/src/support.js
+++ b/src/support.js
@@ -40,7 +40,8 @@
 
 		// Make sure that element opacity exists
 		// (IE uses filter instead)
-		opacity: a.style.opacity === "0.55",
+		// Use a regex to work around a WebKit issue. See #5145
+		opacity: /^0.55$/.test( a.style.opacity ),
 
 		// Verify style float existence
 		// (IE uses styleFloat instead of cssFloat)