function trackdl(dl) {
    if(undefined !== window.debugMode && debugMode === true)
        alert('Trackdl() triggered with trackId: ' + dl);

    var href = 'http://www.babylon.com/dltracker.php?id=' + dl;
    document.getElementById('trackdl').innerHTML = '<iframe src="' + href + '" width="1" height="1" frameborder="0" scrolling="no"></iframe>'; 
}