\mode<presentation>

%
% Frame header
%
\defbeamertemplate*{frametitle}{corporate}[1][]{%
	\nointerlineskip
	% Add frame title
	\begin{beamercolorbox}[wd=\paperwidth, ht=3ex, dp=1.5ex, left, leftskip=2ex]{header}
		\centering\insertframetitle
	\end{beamercolorbox}
	% Add line after
	\nointerlineskip
		\begin{beamercolorbox}[wd=\paperwidth, ht=0.25ex ]{trailer}
	\end{beamercolorbox}
}

%
% Frame trailer
%
\defbeamertemplate*{footline}{corporate}{\hbox{%
	% Add website in the left-most portion of the trailer
	\begin{beamercolorbox}[wd=0.20\paperwidth, ht=2ex, dp=0.5ex, left]{trailer}
		\hfill
		www.sigsum.org
		\hfill
	\end{beamercolorbox}%
	% Add in the trailer's middle portion
	\begin{beamercolorbox}[wd=0.6\paperwidth, ht=2ex, dp=0.5ex, left]{header}
		\hfill
		\inserttitle
		\hfill
	\end{beamercolorbox}%
	% Add page counter in the right-most portion of the trailer
	\begin{beamercolorbox}[wd=0.20\paperwidth, ht=2ex, dp=0.5ex, left]{trailer}
		\hfill
		\insertframenumber/\inserttotalframenumber
		\hfill
	\end{beamercolorbox}
}}

\mode<all>