[jQuery] make a div invisible when it is empty

[jQuery] make a div invisible when it is empty


Good morning,
I am Graphic designer and I use Jquery with Moss (sharepoint) CMS
Microsoft, developers of this gas plant have no sense of aesthetics
code and optimization.
I assumed that with a little magic wand, I was going to do div
disappear when they are empty, then yes I could have use easily use.
empty (), but generates sharepoint   and I can not delete
upstream. This small function
is not much in this case.
<script type="text/javascript">
$(document).ready(function () {
$("#header div empty").hide("slow");
});
</script>
<div id="header">
<div id="Auteur" style="">&nbsp;</div>
<div id="Date" style="">&nbsp;</div>
<div id="accroche-page" style=""><div dir=""></
div>&nbsp;</div>
</div>
Can you help me please