number_of_sponsors=3;

var sctr=0;
var halt=0;
var isn=new Array();

for (i=0;i<number_of_sponsors;i++){
 isn[i]=new Image();
}

isn[0].src="images/fp1.jpg";
isn[1].src="images/fp3.jpg";
isn[2].src="images/fp2.jpg";

function rotateIt(){
 if (halt!=1){
  sctr++;
  if (sctr>number_of_sponsors-1){
   sctr=0;
   }

  document.sponsor.src=isn[sctr].src;
  setTimeout("rotateIt()",3750);
  }
 }