jQuery Trigger for AHAH Form Submit

So I spent a lot of time messing with ahah and node form... painful.
Needless to say I did discover your answer and wanted to share.
If you have a submit button setup as follows:

$form['choice_info']['update_usage'] = array(
    '#type' => 'submit',
    '#value' => t('More choices'),
    '#description' => t("If the amount of boxes above isn't enough, click here to add more choices."),
    '#weight' => 1,
    '#submit' => array('poll_more_choices_submit'), // If no javascript action.
    '#ahah' => array(
      'path' => 'challenge/genre/js',
      'wrapper' => 'genre-info-wrapper',
      'method' => 'replace',
      'effect' => 'fade',
      'event' => 'click',
    ),
  );

The important part here is the 'event' => 'click' once that is in place you can add a simple jQuery to your form:

drupal_add_js('$(document).ready(function() {
    $("#edit-choice-info-platform").change(function() {
	alert("Try and trigger submit");
        $("#edit-choice-info-update-usage").triggerHandler("click");
    });
});', 'inline');

Notice the use of jQuery triggerHandler. In my case what I did was when a select option was changed I would fire the submit button to populate another select options. Using AHAH in a custom node, as part of the select, causes the value chosen in the select to not be posted via AJAX. Three very painful days later. So I guess I am posting this for anyone else wondering.

You saved my life. Really... thanks for posting this!!

Super helpful. Also, here are the default handlers for AHAH events on different form element types: http://api.drupal.org/api/drupal/developer!topics!forms_api_reference.ht...