function KeepSessionAlive() {
	var d = new Date();
	url = 'http://www.capitolconnect.com/humana/keepalive.aspx?unique='
	xmlhttp=new XMLHttpRequest();
	xmlhttp.open("GET",url+d.getTime(),true);
	xmlhttp.send(null);
}

setInterval("KeepSessionAlive()",540000);