Attach JavaScript event handler to Zend_Form_Element

I need to attach some javascript to the onchange event of the Zend_Form_Element. How do I do that?

From stackoverflow

• Try with setAttrib($name, $value), for example:

  $element->setAttrib('onchange', 'jsFunction();');
  

  You can find more detailed information about Zend_Form_Element's here.