Effects: Force a non-empty hash of properties for class animations to ensure the callback is always executed. Fixes #4396 - animateClass does nothing if there are no styles changes. See jQuery core bug #5459 for the cause.
Effects: Force a non-empty hash of properties for class animations to ensure the callback is always executed. Fixes #4396 - animateClass does nothing if there are no styles changes. See jQuery core bug #5459 for the cause.

GrayYoung/jQuery.UI.Extension,GrayYoung/jQuery.UI.Extension