Are those TRUE menu-applets or are they just applications that make there way to the menu bar? If the latter is true, then their pseudo-window is being treated like the others in Tiger, with the shade.
You can tell if you Command+Click on the icon there. If it turns grey-ish and you can drag it to the left and right (or down to make it poof) then its a menu-applet. Otherwise, its a real app that fakes it.