Menu question (list menu)

[Karl-Inge Reknes]

Is there anyone how can help me with a vertical menu with this behavior:
Item A
Item B
Item C
When the user clicks on Item A the menu expands as shown:
Item A
Item A 1
Item A 2
Item A 3
Item B
Item C
I have used asp:TreeView / asp:Menu and web.sitemap to make an navigation
menu and that works, but I’m not able to find out this layout.

Regards
Karl-Inge