function addKropek(id,adverts) {
    advert = adverts[Math.floor((adverts.length)*Math.random())];
    if (advert && advert.hasOwnProperty('media') && advert.hasOwnProperty('link')) {
        if (advert.hasOwnProperty('width')) {
            width = advert.width;
        }
        else {
            width = 150;
        }
        if (advert.hasOwnProperty('height')) {
            height = advert.height;
        }
        else {
            height = 100;
        }
        if (advert.media.search(/\.swf$/) != -1) {
            $(id).flashembed({
                src: advert.media + '?clickTag=' + escape(advert.link),
                wmode: 'opaque',
                width: width,
                height: height
            });
        }
        else {
            $(id).html('<a href="' + advert.link + '"><img src="' + advert.media + '" alt="" width="' + width + '" height="' + height + '" /></a>');
        }
    }
}