Simple method of keeping menuItems from hiding after click?

Question

I have a menuItem with several checked subitems that may want to be checked or unchecked in quick succession.

Is there a simple way to keep the menu from closing each time a menuItem is clicked?

For reference, the menuItem structure is similar to this:

-View
--Types
--- All
--- (chk) Subset 1
--- (chk) Subset 2
--- (chk) Subset 3
--- (chk) Subset 4

Clicking "All" makes all of the types visible (checks all of the menuItems).  The user may want to quicly uncheck subsets 2, 3, and 4 without the menu closing after check uncheck.

Any ideas?

Thanks,

Josh