function trackvisitor() {
    var url = window.location;
    var referrer = document.referrer;
    var title = document.title + '';
    if (title == '') {
        title = $('title', $('head')).text() + '';
    }
    if (title == '') {
        title = 'page title not found';
    }
    var xmlHttpReq;
    if (window.XMLHttpRequest) { xmlHttpReq = new XMLHttpRequest(); }
    else if (window.ActiveXObject) { xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP"); }
    if (xmlHttpReq) {
        xmlHttpReq.open("POST", "/ajax_trackvisitor.asp?trackurl=" + url + "&trackreferrer=" + referrer + "&tracktitle=" + title, true);
        xmlHttpReq.onreadystatechange = function () {
            if (xmlHttpReq.readyState == 4) {
                //alert(xmlHttpReq.responseText);
            }
        }
        xmlHttpReq.send();
    }
}
trackvisitor();