function ajax_search_keycheck(e) {
    var code;
    if (e.keyCode) code = e.keyCode;
    else if (e.which) code = e.which;
    if (code == 13) {
        ajax_search();
    }
}

function ajax_search() {
    var el = $('q');
    if (el.value != '') {
        new Ajax.Request('ajax_search.php?q=' + el.value, {
                    method: 'get',
                    onSuccess: function(transport) {
                        el = $('google_searchresults');
                        el.innerHTML = transport.responseText;
                        el = $('google_searchresults_wrapper');
                        new Effect.Appear(el);
                        new Effect.ScrollTo('google_searchresults_wrapper');
                    }});
    }
}