using paul bakaus comicstrip navigation with 1.4.2

using paul bakaus comicstrip navigation with 1.4.2

Hi All
The comicstrip strip navigation works with version 1.3.2  but i find an upgrade is necessary. The  demo from paul bakaus is at http://paulbakaus.com/lab/navigation/comicstrip/ 

You can find my adaptation  at http://www.bartlensink.nl

can somebody explain why version 1.4.2 of jquery does not work here? help is much appreciated

cheers
geert baven -