This sample demonstrates a menu tree with sub menus that have different styles (CSS classes) set.
With the SmartMenus script you can set a custom style (CSS class) for any sub menu if you like. To learn how you can do this, you can take a look at the following sections of the SmartMenus 6 User's Manual ("manual.html" in the SmartMenus download package):
"4.3 Setting custom style (CSS class) for any sub menu"
You can download the complete example or just see the configuration file and the images used for it.