<!--
function affich(quel){
obj=document.getElementById(quel);
if (obj.style.display=="none"){
obj.style.display="block";}
else{obj.style.display="none";}
}


function PopupCentrer(page,largeur,hauteur,options)
{
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}