var billboardImg = new Array();
  // Enter the names of the images below
  billboardImg[0]="images/sas_building.jpg";
  billboardImg[1]="images/sas_building.jpg";  
  billboardImg[2]="images/sas_eyewear.jpg";
  billboardImg[3]="images/sas_gloves.jpg";
  billboardImg[4]="images/sas_automotive.jpg";
  billboardImg[5]="images/sas_led.jpg";
  billboardImg[6]="images/sas_comfort.jpg";
  

var newBillboard = 0;
var totalBillboard = billboardImg.length;

function cycleBillboard() {
  newBillboard++;
  if (newBillboard == totalBillboard) {
    newBillboard = 0;
  }
  document.billboard.src=billboardImg[newBillboard];
  setTimeout("cycleBillboard()", 20*1000);
}
window.onload=cycleBillboard;