var bannerImg = new Array();
  bannerImg[0]="/images/index_body/pic1.jpg";
  bannerImg[1]="/images/index_body/pic2.jpg";
  bannerImg[2]="/images/index_body/pic3.jpg";
  bannerImg[3]="/images/index_body/pic4.jpg";
  bannerImg[4]="/images/index_body/pic5.jpg";
  bannerImg[5]="/images/index_body/pic6.jpg";
  bannerImg[6]="/images/index_body/pic7.jpg";
  bannerImg[7]="/images/index_body/pic8.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()", 4*1000);
}
window.onload=cycleBan;