function popup_mention(){
	var Largeur = screen.width/2;
	var Hauteur = screen.height/2;
	var PosX = Largeur - Largeur/2;
	var PosY = Hauteur - Hauteur/2;
	window.open("mention/mention.htm", "mention", "toolbar=no,directories=no,scrollbars=yes,menubar=no,status=no,location=no,resizable=no,width="+Largeur+",height="+Hauteur+",top="+PosY+",left="+PosX+"")
}