This the code you'd use auto-open any banner.

<script type="text/javascript">
function autoExpand() {
setTimeout("ExpandableBanners.openAd('squaretopleft')",2000);
setTimeout("ExpandableBanners.openAd('squaretopcenter')",2500);
setTimeout("ExpandableBanners.openAd('squaretopright')",3000);
setTimeout("ExpandableBanners.openAd('squarecenterright')",3500);
setTimeout("ExpandableBanners.openAd('squarebottomright')",4000);
setTimeout("ExpandableBanners.openAd('squarecenterbottom')",4500);
setTimeout("ExpandableBanners.openAd('squarebottomleft')",5000);
setTimeout("ExpandableBanners.openAd('squarecenterleft')",5500);
setTimeout("ExpandableBanners.openAd('squarecentercenter')",6000);

setTimeout("ExpandableBanners.closeAd('squaretopleft')",6500);
setTimeout("ExpandableBanners.closeAd('squaretopcenter')",7000);
setTimeout("ExpandableBanners.closeAd('squaretopright')",7500);
setTimeout("ExpandableBanners.closeAd('squarecenterright')",8000);
setTimeout("ExpandableBanners.closeAd('squarebottomright')",8500);
setTimeout("ExpandableBanners.closeAd('squarecenterbottom')",9000);
setTimeout("ExpandableBanners.closeAd('squarebottomleft')",9500);
setTimeout("ExpandableBanners.closeAd('squarecenterleft')",10000);
setTimeout("ExpandableBanners.closeAd('squarecentercenter')",10500);
}
if (document.addEventListener) {
document.addEventListener("DOMContentLoaded",autoExpand);
}
else if (!window.onload) window.onload = autoExpand;
</script>