function fiche(id){
url = 'http://www.mecgay.net/fiche/' + id + '.htm';
winwidth = screen.availWidth - 10;
winheight = screen.availHeight - 30;
window.open(url, '_self', 'scrollbars=yes, width=' + winwidth + ', height=' + winheight + ', top=0, left=0, resizable');
}