var bannerImg = new Array();
  // Enter the names of the images below
  bannerImg[0]="images/dogs1.jpg";
  bannerImg[1]="images/dogs2.jpg";
  bannerImg[2]="images/dogs3.jpg";
  bannerImg[3]="images/dogs4.jpg";
  bannerImg[4]="images/dogs5.jpg";
  bannerImg[5]="images/dogs6.jpg";
  bannerImg[6]="images/dogs7.jpg";
  bannerImg[7]="images/dogs8.jpg";
  bannerImg[8]="images/dogs9.jpg";
  bannerImg[9]="images/dogs10.jpg";
  bannerImg[10]="images/dogs11.jpg";
  bannerImg[11]="images/dogs12.jpg";
  bannerImg[12]="images/dogs13.jpg";
  bannerImg[13]="images/dogs14.jpg";
  bannerImg[14]="images/dogs15.jpg";
  bannerImg[15]="images/dogs17.jpg";

var newBanner = 0;
var totalBan = bannerImg.length;
var firsttime = 1;

function cycleBan() {
  if (firsttime == 1) {
    firsttime = 0;
    newBanner=Math.floor(Math.random() * (totalBan + 1));
    }
  else { 
    newBanner++;
    }

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