I found a viable alternative to the recommended JS libraries - the native GWT Java library called GWT-FX , developed by Adam Tacy. Some of its functions include built-in effects (Fade, Slide, Highlight), types of physics transitions (linear, ease in / out, elastic) and the ability to create custom effects by defining CSS rules or โpropertiesโ (declarations).
Check out the google wiki and / or demo for more information.
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