Hi,

I would like to not show the name of each chapter on the header of its each page. I also like to have nothing in the headers for abstract, acknowledgement, table of content, list of figures and list of tables. But currently I have header on each page, for example:

Here is my code when specifying these parts in my tex file \begin{abstract}
...
\end{abstract}

\begin{acknowledgement}  
...  
\end{acknowledgement}  

% generate table of contents  
\tableofcontents  

% generate list of tables  
\listoftables  

% generate list of figures  
\listoffigures  

\chapter{Introduction}  
\label{chp1}  

%% REFERENCES  
\appendix  
\input{appendiximages.tex}  

\bibliographystyle{plain}  
%%\bibliographystyle{abbrvnat}  
\bibliography{thesis}

Here is what I believe to be the definition of the commands. More details can be found in these two files jhu12.clo and thesis.cls.

% \chapter:  
\def\chaptername{Chapter}  

% ABSTRACT  
% MODIFIED to include section name in headers   
\def\abstract{  
   \newpage  
   \dsp  
   \chapter*{\abstractname\@mkboth{\uppercase{\abstractname}}{\uppercase{\abstractname}}}  
   \fmfont  
   \vspace{8pt}    

   \addcontentsline{toc}{chapter}{\abstractname}  
}  

\def\endabstract{\par\vfil\null}  


% DEDICATION  
% Modified to make dedication its own section  
%\newenvironment{dedication}  
%{\begin{alwayssingle}}  
%{\end{alwayssingle}}  
\def\dedication{  
    \newpage  
    \dsp  
    \chapter*{Dedication\@mkboth{DEDICATION}{DEDICATION}}  
    \fmfont}  
\def\endacknowledgement{\par\vfil\null}  

% ACKNOWLEDGEMENTS  
% MODIFIED to include section name in headers   

\def\acknowledgement{  
   \newpage  
   \dsp  
   \chapter*{\acknowledgename\@mkboth{\uppercase{\acknowledgename}}{\uppercase{\acknowledgename}}}  
   \fmfont  

   \addcontentsline{toc}{chapter}{\acknowledgename}  
}  

\def\endacknowledgement{\par\vfil\null}  


\def\thechapter       {\arabic{chapter}}  

% \@chapapp is initially defined to be '\chaptername'.  The \appendix  
% command redefines it to be '\appendixname'.  
%  
\def\@chapapp{\chaptername}  

\def\chapter{  
    \clearpage  
    \thispagestyle{plain}  
    \if@twocolumn            % IF two-column style  
      \onecolumn              %  THEN \onecolumn  
      \@tempswatrue           %       @tempswa := true  
     \else \@tempswafalse     %  ELSE @tempswa := false  
    \fi  
    \dsp                     % double spacing  
    \secdef\@chapter\@schapter}  

% TABLEOFCONTENTS  
%  In ucthesis style, \tableofcontents, \listoffigures, etc. are always  
%  set in single-column style.  @restonecol  

\def\tableofcontents{\@restonecolfalse  
  \if@twocolumn\@restonecoltrue\onecolumn\fi  
  %%%%% take care of getting page number in right spot %%%%%  
  \clearpage   % starts new page  
  \thispagestyle{botcenter}   % Page style of frontmatter is botcenter  
  \global\@topnum\z@          % Prevents figures from going at top of page  
  %%%%%  
  \@schapter{\contentsname  
        \@mkboth{\uppercase{\contentsname}}{\uppercase{\contentsname}}}%  
  {\ssp\@starttoc{toc}}\if@restonecol\twocolumn\fi}  

\def\l@part#1#2{\addpenalty{-\@highpenalty}%  
   \addvspace{2.25em plus\p@}% space above part line  
   \begingroup  
   \@tempdima 3em         % width of box holding part number, used by  
     \parindent \z@ \rightskip \@pnumwidth             %% \numberline  
     \parfillskip -\@pnumwidth  
     {\large \bfseries          % set line in \large boldface  
     \leavevmode          % TeX command to enter horizontal mode.  
     #1\hfil \hbox to\@pnumwidth{\hss #2}}\par  
     \nobreak             % Never break after part entry  
    \global\@nobreaktrue                        %% Added 24 May 89 as  
    \everypar{\global\@nobreakfalse\everypar{}}%% suggested by  
                                               %% Jerry Leichter  
   \endgroup}  

% LIST OF FIGURES  
%  
% Single-space list of figures, add it to the table of contents.  

\def\listoffigures{\@restonecolfalse  
  \if@twocolumn\@restonecoltrue\onecolumn\fi  
  %%%%% take care of getting page number in right spot %%%%%  
  \clearpage  
  \thispagestyle{botcenter}   % Page style of frontmatter is botcenter  
  \global\@topnum\z@          % Prevents figures from going at top of page.  
  \@schapter{\listfigurename\@mkboth{\uppercase{\listfigurename}}%  
   {\uppercase{\listfigurename}}}  
   \addcontentsline{toc}{chapter}{\listfigurename}  
   {\ssp\@starttoc{lof}}\if@restonecol\twocolumn\fi}  

\def\l@figure{\@dottedtocline{1}{1.5em}{2.3em}}  

% bibliography  
\def\thebibliography#1{\chapter*{\bibname\@mkboth  
  {\uppercase{\bibname}}{\uppercase{\bibname}}}  
  \addcontentsline{toc}{chapter}{\bibname}  
  \list{\@biblabel{\arabic{enumiv}}}{\settowidth\labelwidth{\@biblabel{#1}}%  
    \leftmargin\labelwidth  
    \advance\leftmargin\labelsep  
    \usecounter{enumiv}%  
    \let\p@enumiv\@empty  
    \def\theenumiv{\arabic{enumiv}}}%  
    \def\newblock{\hskip .11em plus.33em minus.07em}%  
    \sloppy\clubpenalty4000\widowpenalty4000  
    \sfcode`\.=\@m}

Thanks and regards!

EDIT:

I just replaced \thispagestyle{botcenter} with \thispagestyle{plain}. The latter is said to clear the header (http://en.wikibooks.org/wiki/LaTeX/Page_Layout), but it does not. How shall I do?

Thanks!