#menu_acc ul, #menu li {
margin:0;
padding: 0;
list-style-type: none;
	}
#menu_acc ul {
line-height: 29px;
position : absolute;
z-index:4;
/*background: url(img/menu.gif) left top no-repeat;*/
height: 29px;
width: 507px;
top:150px;
left:240px;
}
#menu_acc li {
background:none;
height: 29px;
float:left;
}
#menu_acc li a {
display: block; 
height: 28px;
background: transparent url(img/menu.gif) left top no-repeat;
}
/*#menu li a:hover {
line-height: 29px;
text-decoration:none;
background: transparent url(img/menu.gif) left top no-repeat;
}*/
#menu_acc li a#menu1 {
width:172px;
background-position: 0 0;
}
#menu_acc li a#menu1:hover {
background-position: 0 -31px;
}
#menu_acc li a#menu2 {
width:119px;
background-position: -172px 0;
}
#menu_acc li a#menu2:hover {
background-position: -172px -31px;
}
#menu_acc li a#menu3 {
width:104px;
background-position: -290px 0;
}
#menu_acc li a#menu3:hover {
background-position: -290px -31px;
}
#menu_acc li a#menu4 {
width:112px;
background-position: -397px 0;
}
#menu_acc li a#menu4:hover {
background-position: -397px -31px;
}
a#contact_acc{
position:absolute;
display:block;
width:171px;
height:25px;
top:380px;
left:540px;
background: transparent url(img/contact_acc1.gif) left top no-repeat;
}
a#contact_acc:hover {
background: transparent url(img/contact_acc2.gif) left top no-repeat;
}
/*------------------------------------------ menu interne   */
a#qui, a#quiaktif {
display:block;
margin:5px 0 5px 0;
width:171px;
height:25px;
background: transparent url(img/qui1.gif) left top no-repeat;
}
a#qui:hover, a#quiaktif {
background: transparent url(img/qui2.gif) left top no-repeat;
}

a#offre, a#offreaktif {
display:block;
margin:5px 0 5px 0;
width:171px;
height:25px;
background: transparent url(img/offre1.gif) left top no-repeat;
}
a#offre:hover, a#offreaktif {
background: transparent url(img/offre2.gif) left top no-repeat;
}

a#expert, a#expertaktif {
display:block;
margin:5px 0 5px 0;
width:171px;
height:25px;
background: transparent url(img/expertise1.gif) left top no-repeat;
}
a#expert:hover, a#expertaktif {
background: transparent url(img/expertise2.gif) left top no-repeat;
}

a#produit, a#produitaktif {
display:block;
margin:5px 0 5px 0;
width:171px;
height:25px;
background: transparent url(img/produits1.gif) left top no-repeat;
}
a#produit:hover, a#produitaktif {
background: transparent url(img/produits2.gif) left top no-repeat;
}

a#reference, a#referenceaktif {
display:block;
margin:5px 0 5px 0;
width:171px;
height:25px;
background: transparent url(img/reference1.gif) left top no-repeat;
}
a#reference:hover, a#referenceaktif {
background: transparent url(img/reference2.gif) left top no-repeat;
}

a#contact, a#contactaktif {
display:block;
margin:5px 0 5px 0;
width:171px;
height:25px;
background: transparent url(img/contact1.gif) left top no-repeat;
}
a#contact:hover, a#contactaktif {
background: transparent url(img/contact2.gif) left top no-repeat;
}