var bannerImg = new Array();
var bannerUrl = new Array();
var bannerImage;
var bannerLink;

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

function cycleBan() {
   if (!firstLaunch)
    newBanner++;
else
    firstLaunch = false;

  if (newBanner == totalBan) {
    newBanner = 0;
}

bannerImage = document.getElementById("radDesigner__ctl2_imageBanner");
bannerLink = document.getElementById("radDesigner__ctl2_linkBanner");


    if (bannerLink != null && bannerImage != null && bannerImg[newBanner] != null) {
        bannerLink.href = bannerUrl[newBanner];
        bannerImage.src = bannerImg[newBanner];
   }

setTimeout("cycleBan()", 20*1000);
}

function showPrevImage() {
    if (newBanner > 0)
        newBanner--;
    else
        newBanner = bannerImg.length - 1;

    if (bannerLink != null && bannerImage != null) {
        bannerLink.href = bannerUrl[newBanner];
        bannerImage.src = bannerImg[newBanner];
    }
}

function showNextImage() {
    if (newBanner < bannerImg.length - 1)
        newBanner++;
    else
        newBanner = 0;

    if (bannerLink != null && bannerImage != null) {
        bannerLink.href = bannerUrl[newBanner];
        bannerImage.src = bannerImg[newBanner];
    }
}
window.onload=cycleBan;