[Seaside] Button w/ liveCallback for Canvas API?

[Rick Flower]

Is there such a thing as a button that has a liveCallback associated 
with it? 
I was thinking of using a submit button but when this button is to be 
pressed I only
want a livecallback event associated with it which would update the 
contents of a
div with stuff -- kinda like adding an item to a shopping cart..  I 
tried using a
liveCallback on a submit button and it complained.. Is there some other 
button
available that is capable of a liveCallback or is my only option to use 
the regular
callback: method?

Thanks!