var CruisesFormPage = Class.create({
    initialize: function() {
        $('perform-search').observe('click', function() {
            if ($F('location-list')) {
                $('searchfrm').action = '/cruises-in-' 
                                      + $('location-list').options[$('location-list').selectedIndex]
                                                          .text.toLowerCase().replace(/\s/g, '-') + '/';
                $('searchfrm').submit();
            } else {
                alert($('location-list').getAttribute('message'));
            }
        });    
    }
});