styling wp_nav_menu – horizontal, sub-menu drop downs

As you din’t post any live site with the example of menu, so if I don’t get you wrong, then a nice dropdown menu like this:

+--------+--------+--------+
| Menu 1 | Menu 2 | Menu 3 |
+--------+--------+--------+
         | Sub Menu 1 |
         +------------+
         | Sub Menu 2 |
         +------------+

can be attained easily by using THIS menu CSS. Though it’s raw HTML, CSS, but it’s pretty usable in WordPress too. 🙂