ul#topnav {
  margin: 0; 
  padding: 0;
  float: left;
  width: 779px;
  list-style: none;
  position: relative;
  font-size: 12px;
  /*background: url(topnav_stretch.gif) repeat-x;*/
   z-index:900;
}
ul#topnav li {
  float: left;
  margin: 0;
  padding: 0;
  border-right: 0px solid #555;
}
ul#topnav li a {
  padding: 10px 12px;
  display: block;
  color: #FFF;
  text-decoration: none;
}
ul#topnav li:hover {
background: #860714; 
z-index:900;
text-decoration: none;
height:10px;
}

.effet {
background: #860714; 
z-index:900;
text-decoration: none;
height:10px;
}

ul#topnav li span {
  float: right;
  padding: 15px 0;
  position: absolute;
  left: 0;
  text-align:center;
  top:26px;
  display: none;
  width: 779px;
  background:#cecece/*url(../images/fond_sousmenu.png) repeat*/;
  color: #000;
  -moz-border-radius-bottomright: 5px;
  -khtml-border-radius-bottomright: 5px;
  -webkit-border-bottom-right-radius: 5px;
  -moz-border-radius-bottomleft: 5px;
  -khtml-border-radius-bottomleft: 5px;
  -webkit-border-bottom-left-radius: 5px;
}
ul#topnav li:hover span { display: block;  font-size:12px;color: #000;}
ul#topnav li span a { display: inline; font-size:12px;color: #000;}
ul#topnav li span a:hover {text-decoration: none; font-size:12px;color: #000;}