# Hyperlink button in all pages [duplicate]

Possible Duplicate:
How to edit Beamer theme CambridgeUS

How do I put the same hyperlink button (that opens a pdf file list.pdf) in all slides at same position (header bar or footline ) in the beamer presentation while using cambridgeUS theme?

The preamble looks like this

%\usecolortheme[named=Brown]{structure}
\usetheme{CambridgeUS}
%\usecolortheme{seahorse}
\setbeamertemplate{items}[ball]
\setbeamercolor{title}{bg=red!65!black, fg=white}
%% Macro for inserting Page number in Warsaw theme
%\newcommand*\oldmacro{}%
%\let\oldmacro\insertshorttitle%
%\renewcommand*\insertshorttitle{%
%  \oldmacro\hfill%

\usepackage{ragged2e}\title{Lecture 003}
\author[The Author]{The Author}
\pgfdeclareimage[height=1cm]{iitmlogo}{/home/melvinp/Dropbox/NPTEL/Lecture2/IITMLogo.pdf}
\logo{\pgfuseimage{iitmlogo}}

\date{}

\AtBeginDocument{\setlength{\abovedisplayskip}{0pt}}

%\AtBeginSubsection[]
%{
%  \begin{frame}<beamer>
%    \frametitle{Layout}
%    \tableofcontents[currentsection,currentsubsection]
%  \end{frame}
%}
\justifying{


I'm new to LyX and I don't know LaTeX.

I'm using beamer document class and have around 1500 slides of presentation, which is too big. So I split it into 15 files with 100 slides each as Lecture1.lyx + Lecture1.pdf, Lecture2.lyx + Lecture2.pdf etc. I've developed list.lyx and list.pdf with of all the sections,subsection, and subsubsections (in article document class). When I click on one of the topic in list.pdf the corresponding lecture##.pdf opens because I have hyperlinked them.

But, I want a button in all my 1500 slides, that when I click it, the list.pdf must open (what is the code that i can put in the preamble for this?).

In some cases, when I click on a subsubsection it should open the corresponding PDF file and go to the exact slide where the data is present.

If these are possible then the next problem is that so many PDF files get opened after going through for some time. So, when I click a hyperlink "abc" in list.pdf, the list.pdf should close and the corresponding PDF file opens and points to the required slide. Similarly, when I click the button on any of the 1500 slides, the file that contains the button should close and the list.pdf should open. So, at a time I have only one PDF file open.

-

## marked as duplicate by Gonzalo Medina, Martin Schröder, Marco Daniel, percusse, Tom BombadilAug 23 '12 at 19:51

It's hard to answer your question without more details on what you want, but you could easily add a hyperlink on the header bar or the footline, for example by doing:

\setbeamertemplate{footline}{
\begin{beamercolorbox}[sep=0.2em,wd=\paperwidth,leftskip=0.5cm,rightskip=0.5cm]{footlinecolor}
\hspace{0.3cm}%