[Seaside] keypress event with argument

[Dennis Schetinin]

How can I generate something similar to
	html script: '$(document).keypress(function(e){  alert(e.which + " "
+ e.keyCode); });'.
with "pure" Seaside?
Trying
	html script: (html jQuery this onKeyPress: (html jQuery ajax script:
[:s | s alert: '!!!'])).
gives no event argument. TIA

-- 
Dennis Schetinin