Hi Renato,

Unfortunately, it's not so easy to adjust Drop-down menu your way. However I would recommend you to use CSS list menu for this purpose. It's also better to use this one because of accessibility point of view (e.g.: no javascript, no table layout).

So you could use CSS list menu to achieve your goal. Please see our Web parts reference on the page 129: http://devnet.kentico.com/downloads/KenticoCMS_WebParts.pdf for more details.

Since it's fully CSS driven you need to apply appropriate CSS design on it. Please see example here for inspiration: http://www.cssplay.co.uk/menus/doors_drop_line_three.html

Best regards
Ondrej Vasil