You might be able to use the
sectiontoggle plugin. It was designed with mobile devices in mind but can be used in any device context. It turns h1-h4 headers into toggles but can be configured to omit selected header sizes. It can be set to work across an entire wiki or for a selected page. If you have a mobile device -- phone, tablet -- you can see it at work on www.mturner.org/devel or www.mturner.org/fckgLite