if (tachyonstream_ad_slot != "" && tachyonstream_ad_width > 25 && tachyonstream_ad_height > 25) 
{
    document.write("<iframe src = \"http://ads.tachyonstream.com/pageads/ads?zone=" + tachyonstream_ad_slot + "&d=" + escape(document.domain) + "\" style = \"width:" + tachyonstream_ad_width + "px;height:" + tachyonstream_ad_height + "px;\" frameborder = \"0\" scrolling = \"no\"></iframe>");
}