function trackadclicks() {
        var a = document.getElementsByTagName("A")
        for(var i = 0; i < a.length; i++) {
            if(a[i].className == "sidead" || a[i].className == "sponsorad" || a[i].className == "bannerad") {
                a[i].onclick = function() {
                    var request = getHTTPRequest();
                    var url = "/adclick.aspx?";
                    url += ("pos=" + this.id);
                    var adname = this.firstChild.src;
                    adname = adname.replace("http://www.catholicnewworld.com", "");
					adname = adname.replace("http://catholicnewworld.com", "");
                    adname = adname.replace("/images/ads/", "");
                    adname = adname.replace(/.png|.jpg|.jpeg|.gif/, "");
                    adversion = adname.substr(adname.length-4);
                    adname = adname.replace(/Tile[0-9]{4}/, "");
                    adname = adname.replace(/Sponsor[0-9]{4}/, "");
                    adname = adname.replace(/Banner[0-9]{4}/, "");
                    url += ("&ad=" + adname + "&adver=" + adversion);
                    url += ("&page=" + window.location.pathname);
                    request.open("POST", url, false);
                    request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                    request.send('');
                    return true; 
                }
            }
        }
    }

window.onload = trackadclicks;