var how_many_ads = 1;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;

if (ad==1) {
url="#";
alt="New Site Launch";
banner="images/banners/newsite.jpg";
message="(window.status='New Site Launch'); return true";
messageout="window.status=' ';return true;";
}

document.write('<a href=\"' + url + '\" onMouseOver=\"'+message+'\" onmouseout=\"'+messageout+'\"><img src=\"' + banner + '\" alt=\"' + alt + '\" border=0></a>');