#contenu {
	float:left;
	margin-left: -492px;
	margin-right: auto;
	margin-top:-50px;
	width:985px;
	height:2840px;
	z-index:1;
	background-image:url('images/bg.gif');
	background-repeat:repeat-y;
}

#contenu_gauche {
	float:left;
	width:50%;
	height:2690px;
	margin-top:100px;
	background-image:url(images/gauche.gif);
	background-repeat:repeat;
}

#actu {
	position:relative;
	left: 25px;
	top: 170px;
	margin-top: 15px;
	margin-left: 0px;
	width:925px;
	height:400px;
	z-index:1;
}
#presentation {
	position:relative;
	left:25px;
	top:250px;
	width:925px;
	height:543px;
	z-index:1;
}
#references {
	position:relative;
	left:25px;
	top:300px;
	width:925px;
	height:261px;
	z-index:1;
}
#contact {
	position:relative;
	left:25px;
	top:520px;
	width:925px;
	height:324px;
	z-index:1;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 18px;
	color: #575757;
}
#navig {
	position: fixed;
	left:0px;
	top:0px;
	width:985px;
	height:190px;
	z-index:1;
}
body {
	margin: 0;
}
#header {
	position:fixed;
	width:100%;
	z-index: 10;
}
#header_bg_gauche {
	background-image:url(images/gauche.gif);
	background-repeat:repeat;
	width:50%;
	height:188px;
	float:left;
	z-index: 10;
}

#header_bg_droit {
    background-image:url(images/droite.gif); 
	background-repeat:repeat-x; 
	width:50%; 
	height:188px;
	float:left;
	z-index: 10;
}

#header_centre {
    width:984px; 
	height:188px; 
	background-image:url(images/centre.gif); 
	position:relative; 
	z-index:2; 
	left:-492px; 
	float:left;
	z-index: 15;
}

#header_menu {
	position: absolute;
	padding:5px 25px;
	font-size:20px;
	width: 746px;
	top: 129px;
	z-index: 20;
}

#header_menu ul{
    list-style-type:none; 
	margin:0; 
	padding:0; 
	color:#FFF;
}

#header_menu ul li{
	float:left;
	padding:0 5px 0 5px;
	border-right: #FFF thin solid;
}

#header_menu ul li a{
	color:#FFF;
	text-decoration:none;
}

#header_menu ul li a:hover{
	color:#000;
	text-decoration:underline;
}

.border_0{ 
	border:none !important;
}

.clearer {
	clear:both;
}
#quisommesnous {
	position:absolute;
	left:357px;
	top:490px;
	width:38px;
	height:17px;
	z-index:3;
}
#folio {
	position:absolute;
	left:357px;
	top:1083px;
	width:38px;
	height:17px;
	z-index:3;
}
#email {
	position:absolute;
	left:356px;
	top:1564px;
	width:38px;
	height:18px;
	z-index:3;
}