// set the email field with instruction to type email address
window.addEvent('domready', function() {
    if ($('site_search_form')) {
        var s = 'Enter keyword to search the site...';
        if ($('id_site_search').value == '') {
            $('id_site_search').set('value', s);
        }
    
        $('id_site_search').addEvent('focus', function() {
            if ($('id_site_search').value == s) {
                $('id_site_search').set('value', '');
            }
        });
    
        $('id_site_search').addEvent('blur', function() {
            if ($('id_site_search').value == '') {
                $('id_site_search').set('value', s);
            }
        });
    
        $('site_search_form').addEvent('submit', function() {
            if ($('id_site_search').value == s) {
                $('id_site_search').set('value', '');
            }
        });
    }
});