function skate(id) {
  new Ajax.Updater('skateItem', 'skateboarding_cb.php', {
    parameters: { id: id },
    method: 'get',
    onLoading: $('skateItem').innerHTML = '<div class="skateItem" style="text-align: center; padding: 30px"><img src="images/loader.gif" alt="Loading..." title="Loading..." width="32" height="32" /></div>'
  });
}