[texhax] PDF forms: fill in textfield once, show its contents often throughout document

[Susan Dittmar]

Hi folks,

after days of searching the 'net and trying to wrap my mind around the problem, 
I come to you in hope one of you might have a good idea for me.

I would like to generate a PDF document with textfields that can be filled in by 
the user (that part works). What I don't know how to archive is that I want the 
user-supplied contents to be displayed at several places thoughout the document, 
preferably without further user action. And to ease writing, I want those 
repetitions provided by a macro.

I certainly don't have a _working_ minimal example, but I hacked together my 
rough ideas in case someone wants a starting point for development. But please 
don't feel restricted by its form or choice of packages! I might well have run 
into a mental cul-de-sac.

Any suggestions welcome!

	Susan

\documentclass{article}
\usepackage[pdftex]{hyperref}   % probably pdftex option is not needed

\usepackage[pdftex]{insdljs}    % probably pdftex option is not needed
\begin{insDLJS}[test]{test}{JavaScript}
% whatever callbacks might be needed...
\end{insDLJS}

%% no idea if this really must be here:
%\OpenAction{/S/JavaScript/JS(docOpen();)}

\begin{document}

Here's the master textfield:
\TextField[name={FirstName}, value={Susan}, width=9em]{}%

% a command to display the master textfield's contents
% (this.getField("FirstName").value):
\newcounter{DisplayFirstNameCount}
\setcounter{DisplayFirstNameCount}{0}
\newcommand{\DisplayFirstName}{%
     % No idea how to access this.getField("FirstName").value here.
     % I probably need another (readonly) textfield and some callbacks:
     \stepcounter{DisplayFirstNameCount}
     \TextField[name={FirstName\theDisplayFirstNameCount},
         % <--- what to put in here???
         width=9em, align=2, readonly=true]{}%
}

Within the rest of the document, I would like to use \DisplayFirstName macro 
many times
to have the first TextField's contents (\DisplayFirstName) shown.

\end{document}