nav {
    overflow:hidden;
 height:64px;
  width:0px;
    position:center top;
    width:900px;
    background-image:url('../images/menu_middle.gif'); no-repeat scroll left top transparent;
    -moz-border-radius:10px;
    -webkit-border-radius:10px;
    -border-radius:10px;
	margin:10px auto;
    padding:0px;
	}
nav ul {
    list-style-image:none;
    list-style-type:none;
    position:center top;
    margin:0;
    padding:0;
}
nav ul li {
    float:left;
 }
nav ul li a {
     display:block;
 }