adding level to menu

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

I want to add another level to this menu.
Click on "artists".
You will then see a choice of years or letters.
Where you see the block "A.B. Skhy". is really where I want the next level
to show up.
I want the next level to show a list of the artists in a table format.
So the user can click on either the letter for the full list or just the
group name.

Site Timeline