var total_divs=0; //do not change this. it will be calculated automatically
var className='fadeThis'; //name of your class assigned to the divs you would like to rotate. Need to change it
$(document).ready(function(){

$("."+className).attr("id", function (arr) {
total_divs++;
return "fade" + (arr+1);
})
fadeEngine(0);
});


function fadeEngine(x) {
var y=x;
if(x==total_divs) y=1; else y++;
$("#fade"+x).css("display","none");
$("#fade"+y).fadeIn("slow");
setTimeout('fadeEngine('+y+')',8000);
}