onchange event in form

Hi, I have a form created with QuickForm and I need that some fields are filled depending on selection of combobox.

I think that I will need the "onchange" event in the combo but I don't know how to do it works in a QuickForm.

How can I do it? Halp please.

Thanks.

I'm too, EPESI poor in documents.
In QuickForm, I need select element with on_change_event, how to handle this event?

It depends on what you want to achieve.
As in your post here you can add onchange attribute using the last parameter.

...array('id'=>'employee'));

expand to

...array('id'=>'employee', 'onchange' => 'my_js_func()'));