Pulldown list without "submit button"

I have an exposed taxonomy list (only this). How do I go about if i wanted to have a filter without the 'submit button". Shall it be done with http://www.angrydonuts.com/displaying_views_exposed_filters instead?

For example this is from domain navigation module that has this feature.

function theme_domain_nav_default($options) {
global $_domain;
$current = $options[$_domain['domain_id']];
$output = '
';
$output .= '
';
$output .= ''. t('Jump to...') .'';
foreach ($options as $key => $value) {
($value['active']) ? $selected = ' selected' : $selected = '';
$output .= ''. filter_xss_admin($value['sitename']) .'';
}
$output .= '

';
$output .= '

';
return $output;
}