function drucken()
{
        if (druckfenster = window.open('','', 'width=1024px, height=700px, scrollbars=yes'))
        {
        druckfenster.document.body.innerHTML = window.document.body.innerHTML;
        druckfenster.document.getElementById("oben").parentNode.removeChild(druckfenster.document.getElementById("oben"));
        druckfenster.document.getElementById("unten").parentNode.removeChild(druckfenster.document.getElementById("unten"));
        //if (druckfenster.document.getElementById("nav_1"))
        druckfenster.document.getElementById("nav_l").parentNode.removeChild(druckfenster.document.getElementById("nav_l"));
        druckfenster.document.getElementById("css").setAttribute("href", "M2ie_druck.css");
        druckfenster.print();
        druckfenster.close();
        }
}