From 6de5275687cabf1016649899407c9cfb26d4ed70 Mon Sep 17 00:00:00 2001
From: John Resig <jeresig@gmail.com>
Date: Wed, 10 Jan 2007 01:06:22 +0000
Subject: [PATCH] More jQuery.speed() fixes.

---
 src/fx/fx.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fx/fx.js b/src/fx/fx.js
index 0ede5eea9..d83bf0dd4 100644
--- a/src/fx/fx.js
+++ b/src/fx/fx.js
@@ -363,7 +363,7 @@ jQuery.extend({
 			easing: fn && easing || easing && easing.constructor != Function && easing
 		};
 
-		opt.duration = (opt.duration.constructor == Number ? 
+		opt.duration = (opt.duration && opt.duration.constructor == Number ? 
 			opt.duration : 
 			{ slow: 600, fast: 200 }[opt.duration]) || 400;