var bannerImg = new Array();
  // Enter the names of the images below
  bannerImg[0]="1.jpg";
  bannerImg[1]="2.jpg";
  bannerImg[2]="3.jpg";
  bannerImg[3]="4.jpg";
  bannerImg[4]="1a.jpg";
  bannerImg[5]="2a.jpg";
  bannerImg[6]="3a.jpg";
  bannerImg[7]="4a.jpg";
var newBanner = 0;
var totalBan = bannerImg.length;

function cycleBan() {
  newBanner++;
  if (newBanner == totalBan) {
    newBanner = 0;
  }
  document.banner.src=bannerImg[newBanner];
  // set the time below for length of image display
  // i.e., "4*1000" is 4 seconds
  setTimeout("cycleBan()", 5*1000);
}
window.onload=cycleBan;