The 'oeb-page-head' and 'oeb-page-foot' CSS properties as well as 'oeb-column-number' are currently supported by the eBookwise .IMP format as noted
in this thread.
These are defined as OPS 2.0 extras/extensions that could become part of ADE's implementation of ePub based on this
2007 blog posting (near the bottom of that page).
two years ago...