\makeatletter % pga \@chapapp
\makepagestyle{bog} % laver en ny tom pagestyle
\makeevenhead {bog}{}{\small\sffamily\leftmark} {}
\makeoddhead  {bog}{}{\small\sffamily\rightmark}{}
\makeevenfoot {bog}{\small\sffamily\thepage}  {}{}
\makeoddfoot  {bog}{}{}{\small\sffamily\thepage}
\makepsmarks  {bog}{
  \createmark{chapter}      {both} {shownumber} {\@chapapp\ }{. \ }
  \createmark{section}      {right}{nonumber}   {}           {. \ }
  \createmark{subsection}   {right}{nonumber}   {}           {. \ }
  \createmark{subsubsection}{right}{nonumber}   {}           {. \ }
  \createplainmark{toc}     {both}{\contentsname}
  \createplainmark{lof}     {both}{\listfigurename}
  \createplainmark{lot}     {both}{\listtablename}
  \createplainmark{bib}     {both}{\bibname}
  \createplainmark{index}   {both}{\indexname}
}
\nouppercaseheads % ingen rene kapitaler
\makeatother