function affCache(obj){
	var el = document.getElementById(obj);
	if (el.style.display == "block") {
		el.style.display = "none";
	}else {
		el.style.display = "block";
	}
}

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);
}