}
    }

    public static void addBefore(Element sibling, Node n) {
        def parent = sibling.parentNode
        parent.insertBefore(n, sibling)
    }

    public static Object addAfter(Element sibling, Closure cl) {
        DomBuilder builder = new DomBuilder(sibling.ownerDocument, null)
        cl.delegate = builder
        cl.call()
        def parent = sibling.parentNode