[html-formfu] event.observe handling

[kewei xiao]

I am not sure How I can handle event.observe in yml file, something like 
this:

Event.observe( window, 'load',
        function () {
            Event.observe( 'country', 'click',  function () { 
countryChosen('country'); } );
            Event.observe( 'country', 'keypress',  function () { 
countryChosen('country'); } );
            countryChosen( 'country' );

Can I use "attributes_xml: { onchange: countryChosen(this.id) }" to 
handle the event.observe?

Kewei