function tracker(event) {
    pageTracker._trackPageview("/outgoing/" + event.target.href);
}

pattern = /^https?:\/\/(?!www.keresve.hu)/;
links = document.getElementsByTagName("a");
for (var index = 0; index < links.length; index++) {
    if (!links[index].onclick && pattern.test(links[index].href)) {
        links[index].onclick = tracker;
    }
}