dropdown jump menu with categories?

Hi,

I’ve found some code that’s working to make a dropdown jump menu for the monthly archives, but can’t seem to get it to work for categories. Here’s what I’m using:

<?php

echo "<select name='archive-dropdown3' onChange='document.location.href=this.options[this.selectedIndex].value;'>
<option value=''>";
echo attribute_escape(__('Browse by Month'));
echo "</option>";
wp_get_archives('type=monthly&format=option&show_post_count=1');
echo "</select>";

?>

I’ve tried wp_list_categories, and the_category, but can’t get either to work with the above code. Any ideas?

Thanks!