hide a message after 30 seconds.?
<p>How can after click on button show a message and next <strong>hide it after 30 seconds</strong>?</p>

<p><strong>Like:</strong></p>

<pre><code>$('#message').live('click', function() {
    $('#sm').hide();
    $('#sm').hide().show('slow').html('You have successfully registered');
    // how is hide "$('#sm')" after 30 seconds??
});
</code></pre>

<p>Please give me example in <a href="http://jsfiddle.net/" rel="nofollow">http://jsfiddle.net/</a></p>
