CMenu and pro_dropline

Hello, is there any way to achieve menu structure using CMenu like this one:

As far as I can see, main differences are:

CMenu renders all items in one <ul> list. pro_dropline has separate <ul> list for every top level item.

CMenu uses only <ul> <li> <span> tags. pro_dropline uses <div> tags as well.

I know that I can extend Cmenu into my own class and make changes there, but, I don’t know where to start :(

Can you help me and point me to some direction?

Thanks in advance