home = 'www.folk.de';
if (parent.location.hostname != home &&
    parent.location.hostname.substring(0,3) != '10.' &&
    location.protocol != 'file:') 
{
    url = location.href;
    page = url.substring(url.indexOf('/kraeuterhexe/')+14, url.length);
    // Laenderkennung entfernen;
    if (page.indexOf('/')==2) {page = page.substring(3, page.length)};
    location.href = 'http://' +home +'/kraeuterhexe/index.htm?page=' +page;
}