\if@twoside
\def\ps@bfheadings{\def\@oddfoot{}\def\@evenfoot{}%
\def\@evenhead{\bf \thepage\hfil \bf \leftmark}%
\def\@oddhead{\hbox{}\bf \rightmark \hfil \bf\thepage}%
\def\chaptermark##1{\markboth {\ifnum \c@secnumdepth >\m@ne
\thechapter \ \ \fi ##1}{}}%
\def\sectionmark##1{\markright {\ifnum \c@secnumdepth >\z@
\thesection \ \ \fi ##1}}}
\else
\def\ps@bfheadings{\def\@oddfoot{}\def\@evenfoot{}%
\def\@oddhead{\hbox {}\bf \rightmark \hfil \bf\thepage}%
\def\chaptermark##1{\markright {\ifnum \c@secnumdepth >\m@ne
\thechapter \ \ \fi ##1}}}
\fi
\let\@oldenddocument\enddocument
\def\enddocument{\label{@lastpage}\@oldenddocument}
\if@twoside
\def\ps@numheadings{\def\@oddfoot{}\def\@evenfoot{}%
\def\@evenhead{\rm \thepage/\pageref{@lastpage}\hfil \sl \leftmark}%
\def\@oddhead{\hbox{}\sl \rightmark \hfil \rm\thepage/\pageref{@lastpage}}%
\def\chaptermark##1{\markboth {\ifnum \c@secnumdepth >\m@ne
\thechapter \ \ \fi ##1}{}}%
\def\sectionmark##1{\markright {\ifnum \c@secnumdepth >\z@
\thesection \ \ \fi ##1}}}
\else
\def\ps@numheadings{\def\@oddfoot{}\def\@evenfoot{}%
\def\@oddhead{\hbox {}\sl \rightmark \hfil \rm\thepage/\pageref{@lastpage}}%
\def\chaptermark##1{\markright {\ifnum \c@secnumdepth >\m@ne
\thechapter \ \ \fi ##1}}}
\fi
\def\ps@mynumheadings{\let\@mkboth\@gobbletwo
\def\@oddhead{\hbox{}\sl\rightmark \hfil \rm\thepage/\pageref{@lastpage}}%
\def\@oddfoot{}\def\@evenhead{\rm \thepage/\pageref{@lastpage}%
\hfil\sl\leftmark\hbox {}}%
\def\@evenfoot{}\def\sectionmark##1{}\def\subsectionmark##1{}}
\if@twoside
\def\ps@bfnumheadings{\def\@oddfoot{}\def\@evenfoot{}%
\def\@evenhead{\bf \thepage/\pageref{@lastpage}\hfil \bf \leftmark}%
\def\@oddhead{\hbox{}\bf \rightmark \hfil \bf\thepage/\pageref{@lastpage}}%
\def\chaptermark##1{\markboth {\ifnum \c@secnumdepth >\m@ne
\thechapter \ \ \fi ##1}{}}%
\def\sectionmark##1{\markright {\ifnum \c@secnumdepth >\z@
\thesection \ \ \fi ##1}}}
\else
\def\ps@bfnumheadings{\def\@oddfoot{}\def\@evenfoot{}%
\def\@oddhead{\hbox {}\bf \rightmark \hfil \bf\thepage/\pageref{@lastpage}}%
\def\chaptermark##1{\markright {\ifnum \c@secnumdepth >\m@ne
\thechapter \ \ \fi ##1}}}
\fi