var adv_side="";
var num=Math.floor(Math.random()*4);
if(num=="0"){
adv_side='<iframe src="ads/adv2default.html" width="100px" height="255px" scrolling="no" frameborder="0"></iframe>';
}
else if(num=="1"){
adv_side='<iframe src="ads/adv1562318.html" width="100px" height="255px" scrolling="no" frameborder="0"></iframe>';
}
else if(num=="2"){
adv_side='<iframe src="ads/adv1562319.html" width="100px" height="255px" scrolling="no" frameborder="0"></iframe>';
}
else if(num=="3"){
adv_side='<iframe src="ads/adv1562451.html" width="100px" height="255px" scrolling="no" frameborder="0"></iframe>';
}