complete: fn || !fn && easing ||
jQuery.isFunction( speed ) && speed,
duration: speed,
- easing: fn && easing || jQuery.isFunction(easing) && easing
+ easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
};
opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :