div#wrapper{
 width: 720px:
 margin: 0;
 background-color: purple;
}
 
 
    
/* メニュー */
ul#menu{
 font-size:0.75em;
 margin-top:0;
 margin-bottom:0;
 padding-left:0;
 height:20px;
 background-color: black;
 background-image:url(menu.jpg); 
}
 
ul#menu li{
 list-style-type:none;
 float:left;
}
 
ul#menu li a{
 display:block;
 width:80px;
 text-decoration: none;
 line-height:20px;
 text-align:center;
 color:black;
 background-color: black;
 background-image:url(menu.jpg); 
}

ul#menu li a.change{
 display:block;
 width:80px;
 text-decoration: none;
 line-height:20px;
 text-align:center;
 color:black;
 background-color: white;
 background-image:url(menu3.jpg);
}

ul#menu li a:hover{
 background-color:red;
 background-image:url(menu3.jpg)
}