[jQuery] Why doesn't my prev() work?

[jQuery] Why doesn't my prev() work?


Hi,
I'm sure to a whizz this is going to be a bit of a noob question, but
why doesn't my prev() work here:
<script type="text/javascript">
$(document).ready(function() {
$('.child').hide();
$('name=selected').prev('.child').show();
});
</script>
HTML:
<ul class="parent">
<li><a href="">test 1</a></li>
<li><a href="">test 1</a>
<ul class="child">
<li><a href="" name="selected">test 1</a></li>
<li><a href="">test 1</a></li>
</ul>
</li>
<li><a href="">test 1</a>
<ul class="child">
<li><a href="">test 1</a></li>
<li><a href="">test 1</a></li>
</ul>
</li>
</ul>
Cheers chaps,
Keir