[Pharo-users] Seaside on Pharo - Why the weird jQuery integration syntax compared to Scriptaculous?

Seaside on Pharo - Why the weird jQuery integration syntax compared to Scriptaculous? Ex1: html scriptaculous sortable onUpdate: (html scriptaculous... etc). html jQuery new sortable onStop: (html jQuery... etc). Ex2: html scriptaculous effect id: helpId; toggleAppear. (html jQuery id: helpId) slideToggle: 1 seconds. The way jQuery and Scriptaculous were integrated 'seems' similar. Can anyone explain what design change took place between the two and it's effect on syntax? PS. Especially in the last example.