\usepackage{etex}
\usepackage{pgfpages}
\usepackage{color}
\usepackage{tikz}
\usetikzlibrary{shapes}
\usetikzlibrary{backgrounds}
% beamer mode
\mode<beamer>{
\useinnertheme[shadow=true]{rounded}
\useoutertheme{shadow}
\usecolortheme{orchid}
\usecolortheme{whale}
\setbeamerfont{block title}{size={}}
\setbeamertemplate{headline}
{%
}
\setbeamertemplate{footline}
{%
\leavevmode%
\hbox{\begin{beamercolorbox}[wd=.25\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm,rightskip=.3cm]{author in head/foot}%
\usebeamerfont{author in head/foot}\insertshortauthor
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.25\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm,rightskip=.3cm]{title in head/foot}%
\usebeamerfont{title in head/foot}\insertshorttitle
\end{beamercolorbox}}%
\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex]{section in head/foot}%
\insertsectionnavigationhorizontal{.5\paperwidth}{}{\hskip0pt plus1filll}%
\end{beamercolorbox}%
\vskip0pt%
}
}
% transparency mode
\mode<trans>{
\usetheme{Warsaw}
}
% handout mode
\mode<handout>{
\usetheme{default}
\setbeamercolor{background canvas}{bg=black!5}
\pgfpagesuselayout{4 on 1}[letterpaper,landscape,border shrink=2.5mm]
}
\newcommand{\return}[2]{\hyperlink{#1}{\beamerreturnbutton{#2}}}
\newcommand{\goto}[2]{\hyperlink{#1}{\beamergotobutton{#2}}}
\newcommand{\skipto}[2]{\hyperlink{#1}{\beamerskipbutton{#2}}}
\beamertemplatetransparentcovered
\setbeamertemplate{navigation symbols}{} % no navigation symbols, please
\mode<beamer>{\setbeamercolor{block title}{bg=green!40!black}}
\beamersetuncovermixins
{\opaqueness<1->{60}}
{}