\newcommand{\myfoot}{%
\long\def\@makefntext##1{\parindent 1em\noindent\$@thefnmark$.~~##1}}

\newcommand{\mpfoot}{%

 \long\def\@makefntext##1{\scriptsize\sf\parindent 1em%
   \noindent\@thefnmark.~~##1}

 \def\footnoterule{\vspace*{-\arrayrulewidth}%
   \rule{\linewidth}{\arrayrulewidth}\vspace*{2.6pt}}
}