root/trunk/apps/main/modules/people/templates/_filterForm.php

<?php echo form_tag('@people_home', 'method=get id=country_form') ?>
  <p>
    <?php echo label_for('country', __('Filter by country')) ?>
    <?php echo select_tag('country',
                          options_for_select($countries,
                                             $sf_request->getParameter('country'),
                                             array('include_custom' => __('All countries'))),
                          array("onchange" => "document.getElementById('city').selectedIndex=0;".
                                              "document.getElementById('city_selector').style.display='none';".
                                              "return false")) ?>
  </p>
  <?php if ($sf_request->hasParameter('country') && isset($cities)): ?>
  <p id="city_selector">
    <?php echo label_for('country', __('Filter by city in %country%',
                                       array('%country%' => format_country($sf_request->getParameter('country'))))) ?>
    <?php echo select_tag('city',
                          options_for_select($cities,
                                             $sf_params->getRaw('selected_city'),
                                             array('include_custom' => __('All cities')))) ?>
  </p>
  <?php endif; ?>
  <p>
    <?php echo checkbox_tag('available', 1, $sf_request->hasParameter('available'), 'id=available') ?>
    <?php echo label_for('available', __('Only people available for hire'), 'class=left') ?>
  </p>
  <p>
    <?php echo submit_tag(__('Filter')) ?>
  </p>
<?php echo end_form() ?>