% sample file
% http://theoval.cmp.uea.ac.uk/~nlct/latex/pdfdoc/

\NeedsTeXFormat{LaTeX2e}

\ProvidesPackage{pdfdoc}

% create a new page style that has a navigation bar in the footer

% \ifthenelse is used to determine if the Previous or Next needs
% to be greyed.

% The first page is determined by defining a new boolean called
% firstpage, which is initially set to true, but is changed
% to false after the title page (by modifying the titlepage
% environment, see below.)
%
% The page number is also surpressed on the first page.

% The last page is determined by defining a new boolean called
% lastpage, and setting in to true at the end of the index.
% (This is assuming that the index occurs at the very end
% of the document, which is the norm.)

\newboolean{lastpage}
\setboolean{lastpage}{false}

\newcommand\ps@online{
\renewcommand{\@oddhead}{}
\renewcommand{\@evenhead}{}
\renewcommand{\@oddfoot}{\hfill
   \ifthenelse{\boolean{firstpage}}
              {\textcolor[gray]{0.8}{Previous}}
              {\Acrobatmenu{PrevPage}{Previous}}
   \ifthenelse{\boolean{lastpage}}
              {\textcolor[gray]{0.8}{Next}}
              {\Acrobatmenu{NextPage}{Next}}
   \Acrobatmenu{FirstPage}{First}
   \Acrobatmenu{LastPage}{Last}
   \Acrobatmenu{GoBack}{Back}
   \Acrobatmenu{GoForward}{Forward}
   \hyperref[sec:index]{Index}\hfill
   \ifthenelse{\boolean{firstpage}}{}{\thepage}}
\renewcommand{\@evenfoot}{\@oddfoot}}

\renewenvironment{theindex}
               {\if@twocolumn
                  \@restonecolfalse
                \else
                  \@restonecoltrue
                \fi
                \columnseprule \z@
                \columnsep 35\p@
                \twocolumn[\section*{\indexname}]%
                \@mkboth{\MakeUppercase\indexname}%
                        {\MakeUppercase\indexname}%
                \label{sec:index}\addcontentsline{toc}{section}{\indexname}\parindent\z@
                \parskip\z@ \@plus .3\p@\relax
                \let\item\@idxitem}
               {\setboolean{lastpage}{true}\relax
                \if@restonecol\onecolumn\else\clearpage\fi}

% online version has the title on a page by itself.

\ifonline
  \newboolean{firstpage}
  \setboolean{firstpage}{true}

% titlepage environment needs to be redefined
% so that it doesn't set the pagestyle to empty

\renewenvironment{titlepage}
    {%
      \if@twocolumn
        \@restonecoltrue\onecolumn
      \else
        \@restonecolfalse\newpage
      \fi
    }%
    {\if@restonecol\twocolumn \else \newpage \fi
     \global\firstpagefalse
    }

% Make sure that maketitle uses titlepage environment

   \renewcommand\maketitle{\begin{titlepage}%
  \let\footnotesize\small
  \let\footnoterule\relax
  \let \footnote \thanks
  \null\vfil
  \vskip 60\p@
  \begin{center}%
    {\LARGE \@title \par}%
    \vskip 3em%
    {\large
     \lineskip .75em%
      \begin{tabular}[t]{c}%
        \@author
      \end{tabular}\par}%
      \vskip 1.5em%
    {\large \@date \par}%       % Set date in \large size.
  \end{center}\par
  \@thanks
  \vfil\null
  \end{titlepage}%
  \setcounter{footnote}{0}%
  \global\let\thanks\relax
  \global\let\maketitle\relax
  \global\let\@thanks\@empty
  \global\let\@author\@empty
  \global\let\@date\@empty
  \global\let\@title\@empty
  \global\let\title\relax
  \global\let\author\relax
  \global\let\date\relax
  \global\let\and\relax
  }
\fi

\endinput