<script type="text/javascript">

function aktualizacja_czas()
{
    var data = new Date();

    var day = data.getDate();
    var month = data.getMonth()+1;
    var year = data.getFullYear();

    var hour = data.getHours();
    if (hour<10) hour = "0" + hour;
    var minutes = data.getMinutes();
    if (minutes<10) minutes = "0" + minutes;
    var seconds = data.getSeconds();
    if (seconds<10) seconds = "0" + seconds;

    document.getElementById("zegarek").innerHTML =
    day +"/" + month + "/" + year +  " | " + hour + ":" + minutes + ":" + seconds;

    setTimeout("aktualizacja_czas()",1000);
}
</script>