function right(e)
    {
    if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2))
        return false;
    else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3))
        {
        alert("Sorry, der Quelltext dieser WEB-Site ist geschützt!");
        return false;
        }
    return true;
    }

    document.onmousedown=right;
    document.onmouseup=right;
    if (document.layers) window.captureEvents(Event.MOUSEDOWN);
    if (document.layers) window.captureEvents(Event.MOUSEUP);
    window.onmousedown=right;
    window.onmouseup=right;