\documentclass[11pt,a4paper,oneside]{article}
\usepackage{aeguill}
\usepackage{fancyhdr}
\usepackage{url}
\usepackage{vmargin}
\usepackage{ifthen}
\usepackage{pstricks}
\usepackage{multicol}
\usepackage{alltt}
\usepackage[dvips]{eso-pic,graphicx}
\usepackage[dvips]{color}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[french]{babel}

\newboolean{mailcrans}

\setpapersize{A4}
\setmarginsrb{18mm}{14mm}{18mm}{14mm}{\headheight}{12pt}{\footheight}{20pt}

\pagestyle{fancy}
\renewcommand{\headrulewidth}{0.8pt}
\renewcommand{\footrulewidth}{0.2pt}
\lhead{\textbf{Notification d'adresse mail invalide}}
\rhead{\textbf{CR@NS}}
\cfoot{\textbf{CR@NS}}

%Define snow flakes
\newcommand{\flakepart}{%
\pspolygon(0,0)(0.5,1)(0.5,3)(1.9,4.4)(1.2,5.1)(0.5,4.4)(0.5,5.7)(-0.5,5.7)(-0.5,4.4)(-1.2,5.1)(-1.9,4.4)(-0.5,3)(-0.5,1)}
\newcommand{\snowflake}[1]{%
\psset{unit=#1}%
\multips{0}(0,0){1}{\flakepart}%
\multips{60}(0,0){1}{\flakepart}%
\multips{120}(0,0){1}{\flakepart}%
\multips{180}(0,0){1}{\flakepart}%
\multips{240}(0,0){1}{\flakepart}%
\multips{300}(0,0){1}{\flakepart}%
}
\newcommand{\multiflake}{%
\rput(0.0 ,1.6){\snowflake{0.06}}%
\rput(0.2 ,0.0){\snowflake{0.06}}%
\rput(0.5 ,0.6){\snowflake{0.04}}%
\rput(0.1 ,1  ){\snowflake{0.04}}%
\rput(0.8 ,1.4){\snowflake{0.06}}%
}


\begin{document}