Need Help with Superfish Menu Style in Wordpress Twentyten Header

I am working on customizing a wordpress site and I need help with my menu. I have decided to create the list myself and add it to a custom header. I am using Wordpress 3.1 and the 2011 with twentyten theme. I did have the suckerfish dropdown menu plugin installedd but I want to customize the menu a little more.
Here is what the menu should look like: http://secundsun.com/wordpress3/wp-content/themes/twentyten/example.html#

Here is the homepage I am trying to integrate it to: http://secundsun.com/wordpress3

Instead of header.php I created a test header to test this menu in called header_test.php.

I almost got it working but cannot find where that shadow in the submenu is coming from in the wordpress template because it isn't there in example.html. I would like to remove that shadow. Thanks!