var how_many_ads = 5;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
txt="";
url="http://shop.persiangraphic.com/index.php?productID=10";
alt="";
banner="http://persiangraphic.com/shop_ads_720/topsecret.jpg";
width="728";
height="90";
}
if (ad==2) {
txt="";
url="http://shop.persiangraphic.com/index.php?productID=5";
alt="";
banner="http://persiangraphic.com/shop_ads_720/vector2.gif";
width="728";
height="90";
}
if (ad==3) {
txt="";
url="http://shop.persiangraphic.com/index.php?productID=14";
alt="";
banner="http://persiangraphic.com/shop_ads_720/vector-art.jpg";
width="728";
height="90";
}
if (ad==4) {
txt="";
url="http://shop.persiangraphic.com/index.php?productID=12";
alt="";
banner="http://persiangraphic.com/shop_ads_720/arab.jpg";
width="728";
height="90";
}
if (ad==5) {
txt="";
url="http://forum.persiangraphic.com/showthread.php?p=2841";
alt="";
banner="http://persiangraphic.com/banners/bannerramezan.gif";
width="728";
height="90";
}


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>');