ul#menu{
clear:both;
list-style: none;
margin:0;
  }
  ul#menu li {
  float: left;
  }
ul#menu li a {
text-align: center;
width: 87px;
height: 15px;
display: block;
background-image:url(fondbouton.jpg);
background-repeat: no-repeat;
background-position: center left
 }
ul#menu li a:hover, ul#menu li a:active {
  background-position: top left;
}
ul#menu li a.selected {
  background-position: bottom left;
  cursor:default;
}