category dropdown not opening up?

Hello,

I am needing some assistance in setting up a custom category.

<?php wp_dropdown_categories(‘orderby=name&exclude=3,14,20,21&show_count=1&title_li=’); ?>

I’m putting this php code in a php widgit. All of it works except for the dropdown portion of it. It is dropping down the list of categories as it should but isn’t opening up when I click on them.

Am I missing another code snippet? If so, where does it go in the above php code?

Thanks in advance! ??