function writeAd(image,url) {
document.write('<a href="' + url + '" target="_blank"><img src="' + image + '" border="0" width="728" height="90"></a>');
//do nothing for now
//document.write('Ad');
}

var rand=Math.floor(Math.random()*4);

//writeAd('http://adf.ly/images/banners/adfly.300x250.1.gif', 'http://adf.ly/?id=1092202');

if (rand == 1) { writeAd('http://banners.popads.net/728x90.gif', 'https://www.popads.net/users/refer/228'); }
else if (rand == 2) { writeAd('http://adf.ly/images/banners/adfly.728x90.2.gif', 'http://adf.ly/?id=1092202'); }
else if (rand == 3) { writeAd('http://images.dreamhost.com/rewards/728x90-a.gif', 'http://www.dreamhost.com/r.cgi?116192'); }
else { writeAd('http://bl.wavecdn.de/lan/banner/en/728_90_1.gif', 'https://binlayer.com/ref-194054.html'); }