var bannerWidth = 0;
var banner2Width = 0;
var opacity = 0;
var image = new Image();

window.onload = function() {
  SlideBanner(1);
  FadeInButtons();
}

function SlideBanner(bannerNum) {
  bannerWidth += 20;
  if(bannerWidth > 792) {
    bannerWidth = 792;
  }
  document.getElementById('mainbanner'+bannerNum).style.width = bannerWidth + 'px';
  prevBanner = bannerNum-1;
  if(prevBanner == 0) {
    prevBanner = 4;
  }
  if(banner2Width > 0) {
    banner2Width = 792-bannerWidth;
    document.getElementById('mainbanner'+prevBanner).style.width = banner2Width + 'px';
  }
  if(bannerWidth < 792) {
    window.setTimeout('SlideBanner('+bannerNum+');', 40);
  } else {
    banner2Width = 792;
    bannerWidth = 0;
    bannerNum++;
    if(bannerNum > 4) { bannerNum = 1; }
    window.setTimeout('SlideBanner('+bannerNum+');', 5000);
  }
}

function FadeInButtons() {
  try {
    opacity += 0.05;
    document.getElementById('frontbuttons').style.MozOpacity = opacity;
    document.getElementById('frontbuttons').style.opacity = opacity;
    document.getElementById('frontbuttons').style.filter = 'alpha(opacity='+(100*opacity)+')';
    if(opacity < 1) {
      window.setTimeout('FadeInButtons();', 30);
    }
  } catch (ex) {}
}