function clock() {
        d=new Date();
        t=d.getTime();
        d.setTime(t);

        h = d.getHours();
        if (h<10){h = "0" + h};
        min = d.getMinutes();
        if (min<10){min = "0" + min};
        sec  = d.getSeconds();
        if (sec<10){sec  = "0" + sec};

        document.getElementById('clock').innerHTML = "<font color=green>" + h + ":" + min + ":" + sec + "</font>";
        lauf = window.setTimeout('clock()', 1000);
}

function addEvent(obj, evType, fn) {
        if(obj.addEventListener) {
                obj.addEventListener(evType, fn, false);
                return true;
        } else if (obj.attachEvent) {
                var r = obj.attachEvent('on'+evType, fn);
                return r;
        } else {
                return false;
        }
}

addEvent(window,"load",clock);