function adzInit()  {
    var adz = getElementsByClass('ad');
    for (i=0; i<adz.length; i++) {
        if (adz[i].getElementsByTagName('img').length || adz[i].getElementsByTagName('iframe').length || adz[i].getElementsByTagName('object').length || adz[i].getElementsByTagName('embed').length) {
            adz[i].style.display = 'block';
        }
    }

    // begin:: a t-online-os superman-banner irgumjat-burgumjat nekije (2008-01-16 - 2008-02-03)
    var billboard = document.getElementById('billboard');
    if (billboard) {
        var billboardIframes = billboard.getElementsByTagName('iframe');
        if (billboardIframes.length) {
            var billboardIframe = billboardIframes[0];
            billboardIframe.style.width = "330px";
            billboardIframe.style.height = "247px";
            billboardIframe.style.marginTop = "0";
        }
    }

    // end::

 }

addEventHandler(window, 'load', adzInit);