#menu {
float: left;	
}

#mainlevelmainnav {
text-align:center; 
font-family: arial,verdana, sans-serif; 
position:relative; 
font-size:1em;
height:1.8em ;
margin:0;
padding:0; 
list-style-type:none;
font-weight: bold;
z-index: 150;
}

#mainlevelmainnav ul {
padding:0; 
margin:0; 
list-style-type:none;  
}

#mainlevelmainnav li {
float:left; 
position:relative; 
border-right: 1px solid #666666;
background: none repeat scroll 0 0 #F26921;
}


#mainlevelmainnav li a, #mainlevelmainnav li a:visited { 
display:block; 
text-decoration:none; 
color:#FFF; 
float:left;  
height:1em;
line-height:1em; 
padding:5px 10px;
}

#mainlevelmainnav li ul { /* affiche ou non les sous-menus */
display:none;
visibility:hidden; 
position:absolute; 
top:2.5em; 
left:0; 
height:0; 
overflow:hidden;
}




#mainlevelmainnav li:hover,
#mainlevelmainnav li a:hover {  /* pour IE6 */ 
text-decoration:none; border:0;
background:#434343;
}


#mainlevelmainnav li:hover ul,
#mainlevelmainnav li a:hover ul {
visibility:visible; 
display:block; 
height:auto; 
width:7.8em; 
background:#F26921; 
left:0; 
top:1.7em; /* = heigth de #mainlevelmainnav -0.1*/     
overflow:visible;
}

#mainlevelmainnav li:hover ul li {
border-top:1px solid #666666; 
border-right:none;
width:7.8em;
}