var rotateImg = new Array();
  // Enter the names of the images below
  rotateImg[0]="images/Lemon.jpg";  
  rotateImg[1]="images/Mango.jpg";
  rotateImg[2]="images/Apple.jpg";  

var count = 0;
var countMax = rotateImg.length;

function rotateImage() {

  document.rotate.src=rotateImg[count];
  
  count++;
  if (count == countMax) {
    count = 0;
  }
  
  setTimeout("rotateImage()", 3*1000);  
  
}