function swap(name, mode) {

    document.images[name].src = 'gfx/menu/' + mode + '/' + name + '.gif';

    if ((name != 'kontakt') && (name != 'referenzen') && (name != 'partner')) {
        if (mode == 'hi') {
            document.images['mo'].src = 'gfx/mouseOver/' + name + '.jpg';
        } else {
            document.images['mo'].src = 'gfx/mouseOver/plain.jpg';
        }
    }
}