var how_many_ads =10;
var now = new Date();
var sec = now.getSeconds();
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
document.write("")
}
if (ad==2) {
document.write("")
}
if (ad==3) {
document.write("")
}
if (ad==4) {
document.write("")
}
if (ad==5) {
document.write("")
}
if (ad==6) {
document.write("")
}
if (ad==7) {
document.write("")
}
if (ad==8) {
document.write("")
}
if (ad==9) {
document.write("")
}
if (ad==10) {
document.write("")
}