<!--
function adArray() {
 for (i=0; i*2<adArray.arguments.length; i++) {
	this[i] = new Object();
	this[i].src = adArray.arguments[i*2];
	this[i].href = adArray.arguments[i*2+1];
 }
 this.length = i;
}
function getAdNum() {
 dat = new Date();
 dat = (dat.getTime()+"").charAt(8);
 if (dat.length == 1)
	ad_num = dat%ads.length;
 else
	ad_num = 0;
 return ad_num;
}
var ads = new adArray (
"images/banners/banner-sasfaa.gif","http://www.sasfaa.org",
"images/banners/banner-CGS.gif","cgs/default.htm",
"images/banners/GreatLakes.jpg","http://www.mygreatlakes.org");
var ad_num = getAdNum(); 
document.write('<a href="'+ads[ad_num].href+'" target="_blank"><img src="'+ads[ad_num].src+'" '
+'width="468" height="60" border=0 name=js_ad></a>');
link_num = document.links.length-1;
function rotateSponsor() {
 if (document.images) {
	ad_num = (ad_num+1)%ads.length;
	document.js_ad.src = ads[ad_num].src;
	document.links[link_num].href = ads[ad_num].href;
	setTimeout("rotateSponsor()",15000);
 }
}
setTimeout("rotateSponsor()",15000);
// -->
