ul {
 padding:0;
 margin:0;
 list-style-type:none;
 }
li {
 float:left; /*pour IE*/
 border-left:0px;
 }
ul li a {
 display:block;
 float:left;   
 width:256px;
 line-height:24px; /*hauteur de l'image de fond*/
 background-color:#3B5FC3;
 text-align:center;
 text-decoration:none;
 font:"Palatino Linotype";
 font-size:16px;
 font-style:italic;
 font-weight:bold;
 color:white;
 }
ul li a:hover {
 background-color:#FF9933;
 font:"Palatino Linotype";
 font-size:16px;
 font-style:italic;
 font-weight:bold;
 color:white;
 }