var bannerImg = new Array();
  // Enter the names of the images below
  bannerImg[0]="test.gif";
  bannerImg[1]="test1.gif";
  bannerImg[2]="test2.gif";
  bannerImg[3]="test3.gif";
  bannerImg[4]="test4.gif";
  bannerImg[5]="test5.gif";
  bannerImg[6]="test6.gif";
  bannerImg[7]="test7.gif";
  bannerImg[8]="test8.gif";
  bannerImg[9]="test9.gif";
  bannerImg[10]="test10.gif";
  bannerImg[11]="test11.gif";
  bannerImg[12]="test12.gif";
  bannerImg[13]="test13.gif";
  bannerImg[14]="test14.gif";
  bannerImg[15]="test15.gif";
  bannerImg[16]="test16.gif";
  bannerImg[17]="test17.gif";
  bannerImg[18]="test18.gif";
  bannerImg[19]="test19.gif";
  bannerImg[20]="test20.gif";
  bannerImg[21]="test21.gif";



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

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