[jQuery] slideup timer

hi, I've this:
<script type="text/javascript">
$(document).ready(function() {
$('#flash').slideDown("slow")({
});
});
</script>
<div id="flash" style="display:none;">

<?php echo $content; ?>

</div>
is there a jquery way to have this #flash slideup after a certain amount
of time?
thanks, I'm new to jquery.
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