body {behavior: url(/templates/2009/css/csshover.htc);} 
div#menu a {
margin: 0;
padding: 0;
background: white;
font: arial;
font-size: 11px;
}
 
div#menu ul {
margin: 0;
padding: 0;
cursor: pointer;
list-style-type:none;
text-align: center;
font-weight: bold;
background: #ffffff;
} 

div#menu li {
float: left;
margin : 0;
padding: 0;
text-align: center;
border: 1px solid #cccccc;
}
 
div#menu li:hover {
float: left;
margin : 0;
padding: 0;
color: #005A9A;
background: #cccccc;
display: block;
border: 1;
}

div#menu li.sousmenu:hover {
float: left;
margin : 0;
padding: 0;
color: #005A9A;
background: #cccccc;
font-weight: bold;
display: block;
border: 0 none;
}

/* rajout couleure de fond */ 
div#menu li.sousmenu {background: 95% 50% no-repeat; background-color:#ffffff} 
/* rajout pr pour flèche direction bas et couleur de fond*/ 
div#menu li.plop { background: 95% 50% no-repeat #ffffff;} 

/* une petite bordure en top*/ 
div#menu ul li {position:relative; list-style: none; float:left; border:1px solid #cccccc} 

div#menu ul ul {position:absolute; display:none; width:120px;} 
div#menu li a {text-decoration: bold; padding: 2px; display:block; width:120px} 
div#menu ul.niveau1 li.sousmenu:hover ul.niveau2,
div#menu ul.niveau2 li.sousmenu:hover ul.niveau3 {display:block;}
div#menu ul.niveau3 {top:2px; left: 125px;}