var nAds = 6;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % nAds;
ad +=1;



if (ad==1) {
banner='<a href="http://ad.zanox.com/ppc/?10307473C761222131T"><img src="http://ad.zanox.com/ppv/?10307473C761222131" align="bottom" width="160" height="600" border="0" hspace="1" alt="160 x 600 multi segments gif"></a>';
}

if (ad==2) {
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}

if (ad==3) {
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}

if (ad==4) {
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}

if (ad==5) {
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}

if (ad==6) {
banner='<a href="http://ad.zanox.com/ppc/?15130819C1360739039T"><img src="http://ad.zanox.com/ppv/?15130819C1360739039" align="bottom" width="160" height="600" border="0" hspace="1" alt="01.02. Promotions160x600 gif"></a>';
}


document.write(banner);