var banner = document.getElementById("banner-box");
var banner_count = count_Divs();
var b = -1;

function change_banner()
{
	if(b>=0){
		document.getElementById('banners-' + b).style.display="none";
		document.getElementById('banners-' + b).parentNode.style.display="none";
	}
	b++;
	if(b == banner_count) b = 0;
	document.getElementById('banners-' + b).style.display="block";
	document.getElementById('banners-' + b).parentNode.style.display="";
	var t = setTimeout("change_banner()",16000);
} 

change_banner();

function count_Divs() {
	var allDIVS = document.getElementsByTagName('DIV');
	var el, i = 0, count = 0;
	while (el = allDIVS.item(i++)) if (el.id.substr(0,8) == 'banners-') count++;
	return count;
}