var how_many_ads = 3; //количество перебираемых баннеров
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
banner="<EMBED height=250 type=application/x-shockwave-flash width=300 src=http://poltavanews.com.ua/media/1345280/sy_300x250_01.swf quality=best wmode=opaque play=true loop=true menu=false allowscriptaccess=always>";
}
if (ad==2) {
banner="<div style=\"background-color:#F1F2F3; padding:10px 0 10px 12px;\"><EMBED height=350 type=application/x-shockwave-flash width=240 src=http://poltavanews.com.ua/media/1403445/ban-c3-c4-edit2.swf quality=best wmode=opaque play=true loop=true menu=false allowscriptaccess=always></div>";
}
if (ad==3) {
banner="<EMBED height=250 type=application/x-shockwave-flash width=300 src=http://poltavanews.com.ua/media/1345286/geely_300x250_06_under90kb.swf quality=best wmode=opaque play=true loop=true menu=false allowscriptaccess=always>";

}
document.getElementById('r-adv').innerHTML=banner;