var bannerImg = new Array();
  // Enter the names of the images below
  bannerImg[0]="/emsfema/images/bigstock_rescue_431771.gif";  
  bannerImg[1]="/emsfema/images/bigstock_policemen_closeup_787064.gif";      
  bannerImg[2]="/emsfema/images/bigstock_firefighter_at_scene_5234989.gif";

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., "2*1000" is 2 seconds
  setTimeout("cycleBan()", 2*1000);
}
window.onload=cycleBan;