var debug_obj = undefined;

function debug_init()
{
    debug_obj = document.getElementById('debug');
}

function debug (msg)
{
    if ( ! debug_obj ) return;

    debug_obj.innerHTML += "<span style='color: #999999'>" + new Date() + "</span> " + msg + "<br>";
    debug_obj.scrollTop = debug_obj.offsetHeight;
}