\documentclass[ignorenonframetext,a4paper,orientation=landscape]{beamer} 

\input{general_header.inc}

\usepackage[bars]{beamerthemetree} % Beamer theme v 2.2
\usetheme{PaloAlto} % Beamer theme v 3.0
\usecolortheme{seagull} % Beamer color theme

\makeatletter
  \setbeamersize{sidebar width left=0.2\paperwidth, sidebar width right=0cm}
  \setlength{\beamer@sidebarwidth}{0.2\paperwidth}
  \setbeamertemplate{sidebar \beamer@sidebarside}
  {
    \beamer@tempdim=\beamer@sidebarwidth%
    \advance\beamer@tempdim by -6pt%
    \vskip4em%
    \insertverticalnavigation{\beamer@sidebarwidth}%
    \vfill
    \ifx\beamer@sidebarside\beamer@lefttext%
    \else%
      \usebeamercolor{normal text}%
      \llap{\usebeamertemplate***{navigation symbols}\hskip0.1cm}%
      \vskip2pt%
    \fi%
  }%

\setbeamertemplate{section in sidebar}%{sidebar theme}
{%
  \vbox{%
    \vskip1ex%
    \beamer@sidebarformat{3pt}{section in sidebar}{\insertsectionheadnumber~\insertsectionhead}%
  }%
}
\setbeamertemplate{section in sidebar shaded}%{sidebar theme}
{%
  \vbox{%
    \vskip1ex%
    \beamer@sidebarformat{3pt}{section in sidebar shaded}{\insertsectionheadnumber~\insertsectionhead}%
  }%
}
\makeatother

\usepackage{multicol}

\addtobeamertemplate{frametitle}{}{%
\begin{textblock*}{30mm}(.78\paperwidth,3mm)
\includegraphics[height=0.7cm,width=2.1cm]{uni-basel-logo}
\end{textblock*}}

%
\setbeamercolor{author in head/foot}{fg=white}
\setbeamercolor{title in head/foot}{fg=black}
\setbeamercolor{section in head/foot}{fg=black}
\setbeamertemplate{section in head/foot shaded}{\color{white!70!black}\insertsectionhead}
\setbeamercolor{subsection in head/foot}{fg=mycolor}
\setbeamertemplate{subsection in head/foot shaded}{\color{white!70!black}\insertsubsectionhead}
\setbeamercolor{frametitle}{fg=black}
\setbeamercolor{framesubtitle}{fg=black}
\setbeamertemplate{caption}{\hfill\tiny\insertcaption}
\setbeamerfont{caption}{size=\footnotesize}

\input{main.inc} 
