[Seaside] tree control?

[Cees de Groot]

Might be a faq, but is there a tree control widget somewhere? We have an  
opportunity for our P2P software but the customer wants to see a web  
interface, so I'm preparing a quick port of what we have now from WxSqueak  
to Seaside (was planned to have both interfaces anyway).

The most pronounced components on the WxSqueak UI are a tree control and a  
notebook control. It would save me alot of thinking if I could just copy  
the whole UI design for the time being :)