var how_many_ads = 20;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
banner="templates/Main/images/left/1.jpg";
}
if (ad==2) {
banner="templates/Main/images/left/2.jpg";
}
if (ad==3) {
banner="templates/Main/images/left/3.jpg";
}
if (ad==4) {
banner="templates/Main/images/left/4.jpg";
}
if (ad==5) {
banner="templates/Main/images/left/5.jpg";
}
if (ad==6) {
banner="templates/Main/images/left/6.jpg";
}
if (ad==7) {
banner="templates/Main/images/left/7.jpg";
}
if (ad==8) {
banner="templates/Main/images/left/8.jpg";
}
if (ad==9) {
banner="templates/Main/images/left/9.jpg";
}
if (ad==10) {
banner="templates/Main/images/left/10.jpg";
}
if (ad==11) {
banner="templates/Main/images/left/11.jpg";
}
if (ad==12) {
banner="templates/Main/images/left/12.jpg";
}
if (ad==13) {
banner="templates/Main/images/left/13.jpg";
}
if (ad==14) {
banner="templates/Main/images/left/14.jpg";
}
if (ad==15) {
banner="templates/Main/images/left/15.jpg";
}
if (ad==16) {
banner="templates/Main/images/left/16.jpg";
}
if (ad==17) {
banner="templates/Main/images/left/17.jpg";
}
if (ad==18) {
banner="templates/Main/images/left/18.jpg";
}
if (ad==19) {
banner="templates/Main/images/left/19.jpg";
}
if (ad==20) {
banner="templates/Main/images/left/20.jpg";
}
document.write('<img src=\"' + banner + '\"')