No Child Page – Show no side menu

Hi,

I have a site http://dev.ussailing.org which is using the child page navigation plugin for the side menu. I like how it works with showing the child menu but is it possible to show no menu when there is no child menu item within that page? For example http://dev.ussailing.org/index.php/membership/benefits/insurance/ its the insurance page and only showing the insurance page on the side menu.

any help appreciated.

http://wordpress.org/plugins/child-page-navigation/