function tick(){
    var var_upload,a_upload,a_upload_disp;
    var var_users,a_users,a_users_disp;
    var idt;
    a_upload        = 30000;
    a_upload_disp   = 40000;
    a_users         = 210;
    a_users_disp    = 40;

    var_upload   = a_upload + Math.floor(a_upload_disp * Math.random());
    var_users    = a_users + Math.floor(a_users_disp * Math.random());
    document.getElementById('users').innerHTML    = var_users;
    document.getElementById('upload').innerHTML   = var_upload;

    window.setTimeout('tick()',2000);
}
tick();