displaying dynamic menu on mouse click ASP.NET Menu Control

Hi,
I am having a asp.net (4.0) menu control, to populate the menu's, am fetching data from sql server.
I need help on adding the below two
1. I would like to change menu behaviour of displyaing the dynamic menu from on mouse over to mouse click
2. How can i add a separator or hr line in between two sub menus.


Your help is much appreciated, thank in advance.