.menu{width:666px; margin:auto; list-style:none;}
	.menu li{float:center; margin:0px 30px 0 0;}
	.menu a{text-indent:-5999px;}
	.menu span{display:block; width:32px; height:32px;} 
	
	.menu #arbo span {background:url('img/SiteOuebTRANCHES2.png') 0 0 no-repeat;}
	.menu #arbo span:hover {background:url('img/SiteOuebTRANCHES2.png') 0 -32px no-repeat;}
	.menu #ppam span {background:url('img/SiteOuebTRANCHES2.png') -32px 0 no-repeat;}
	.menu #ppam span:hover {background:url('img/SiteOuebTRANCHES2.png') -32px -32px no-repeat;}
	.menu #vivaces span {background:url('img/SiteOuebTRANCHES2.png') -64px 0 no-repeat;}
	.menu #vivaces span:hover {background:url('img/SiteOuebTRANCHES2.png') -64px -32px no-repeat;}
	.menu #pepibou span {background:url('img/SiteOuebTRANCHES2.png') -96px 0 no-repeat;}
	.menu #pepibou span:hover {background:url('img/SiteOuebTRANCHES2.png') -96px -32px no-repeat;