ZK 5 pewview now makes use of jQuery for clientside scripting purposes, I have written two articles on implementing effects using jQuery & ZK 5.0 preview, they can be located at the following links:
http://docs.zkoss.org/wiki/ZK_5.0_and_jQuery and http://docs.zkoss.org/wiki/ZK_5.0_and_jQuery_part_2 Any feedback would be welcomed! Thanks, Tim