var how_many_ads = 4;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
txt="";
url="http://afaghhosting.net/";
alt="آفاق هاستینگ";
banner="http://afaghhosting.net/images/afaghbanner1.gif";
width="468";
height="60";
}
if (ad==2) {
txt="";
url="http://www.njavan.com/";
alt="نخبگان جوان";
banner="http://www.njavan.com/forum/imagehosting/149844a330998e.jpg";
width="468";
height="60";
}
if (ad==3) {
txt="";
url="http://www.hirka2music.com/";
alt="سایت موزیک";
banner="http://img.webme.com/pic/h/hirka2music/baner.gif";
width="468";
height="60";
}
if (ad==4) {
txt="";
url="http://www.greenv.info/";
alt="فروش اکانت اختصاصی VPN";
banner="http://njavan.com/forum/imagehosting/14a5b7b626e7db.jpg";
width="468";
height="60";
}



document.write('<center>');
document.write('<a href="' + url + '" target="_blank">');
document.write('<img src="' + banner + '" width=')
document.write(width + ' height=' + height + ' ');
document.write('alt="' + alt + '" border=0><br>');
document.write('<small>' + txt + '</small></a>');
document.write('</center>');