I had change the Book Shoppe menu since I originally posted here. But I am still experiencing the problem with the rest of the menu that has a 3rd level. I have attached 2 screen shots, 1 from Firefox, and 1 from Google chrome. IE and Opera look the same as the others. I also attached the menu.css and menustyle.xml files in a zip file.
FiFi's Boutique > Special Apparel has the problem as does Emporium > Shirts, and Gift Shoppe > Special Handmade Items, and Bazaar > Garden Flags. The second level blocks out parts of the 3rd level. And as I mention in my original message, I can't seem to find the problem in the CSS file.
I should be able to adjust this menu, right?