function afficherSousMenu(num) {
  if (num==1)
    document.getElementById("sousmenu").innerHTML="<table><tr><td class='txt'><a href='/origines.php'>Origines</a> | <a href='/aujourdhui.php'>Aujourd'hui</a> | <a href='/lacompetition.php'>La compétition</a></td></tr></table>";
  else if (num==2)
    document.getElementById("sousmenu").innerHTML="<table><tr><td class='txt'><a href='/present_club.php'>Présentation</a> | <a href='/enseignants.php'>Les enseignants</a> | <a href='/eleves.php'>Les élèves</a></td></tr></table>";
  else
    document.getElementById("sousmenu").innerHTML="&nbsp;";
}

function popupCentree(page,width,height) {
  window.open(page,'popup','width='+width+',height='+height+',left='+((screen.width/2)-(width/2))+',top='+((screen.height/2)-(height/2))+',resize=0,status=0,toolbar=0,scrollbars=0,location=0');
}