Edit in JSFiddle

$(document).ready(function() {
        $("#timeout").fadeIn().queue(function() {
            setTimeout(function(){$("#timeout").dequeue();
            }, 3000);
        });
        $("#timeout").fadeOut();
});

#timeout{
    position:absolute;
    top:30px;
    left:50px;
    padding:20px; 
    border:1px solid #ddd;
    background:#eee;
}

<div id="timeout">
  <p>Time out</p>
</div>