var ad = new Array('<a href="/eriesense/issues/Summer2008/MonsterAd.aspx"><img src="/eriesense/issues/Summer2008/images/MonsterAd.jpg" alt="Advertisement" border="0"></a>',
'<a href="/eriesense/issues/Summer2008/ReadyForAnything.aspx"><img src="/eriesense/issues/Summer2008/images/FloodArticleAd.jpg" alt="Advertisement" border="0"></a>');
var max = ad.length;
var num = Math.floor((Math.random() * max));
document.writeln(ad[num]);