OK, now I do get it:
var fn = function(e) {
console.log('event is:', e);
};
$('bla').addEvent('click', fn );
thank you for your patience.
Vic
>
> If you *don't* need to pass a second argument in addition to the
> event, you just
>
> addEvent( 'click', fn )
>
> fn(e) {
> // e is the Mootools event
> // e.event is the DOM event
>
> }
>
> -- S.
