#nav{
    height: 39px;
    border-radius: 3px;
    min-width:500px;
    border:0px solid #ddd;
    color:#000;
}  

#nav li{
    list-style: none;
    display: block;
    float: left;
    height: 40px;
    position: relative;
    background:#D4F4AD;
border-radius:15px;
-moz-border-radius:15px;
-webkit-border-radius:15px;
}
/* ขอบปกติ */
.normal
{
    list-style: none;
    display: block;
    float: left;
    height: 40px;
    position: relative;
    
}

#nav li a{
    padding: 0px 10px 0px 10px;
    margin: 0px 0;
    line-height: 40px;
    border-right: 1px solid #ddd;
    height: 40px;
}

#nav ul{
    padding: 0px;
    width:170px;
    border:1px solid #ddd;
}
#nav .site-name,#nav .site-name:hover{
    padding-left: 10px;
    padding-right: 10px;
    width: 160px;
}
#nav .site-name a{
    width: 129px;
    overflow:hidden;
}
#nav li a{
    display: block;
}
#nav ul li {
    border-right:none;
    border-bottom:1px solid #DDDDDD;
    width:170px;
    height:39px;
}
#nav ul li a {
    border-right: none;
    border-bottom:1px solid #FFFFFF;
}

/* Sub menus */
#nav ul{
    display: none;
        visibility:hidden;
    position: absolute;
    top: 40px;
}
/* Third-level menus */
#nav ul ul{
    top: 0px;
    left:170px;
    display: none;
        visibility:hidden;
    border: 1px solid #DDDDDD;
}
/* Fourth-level menus */
#nav ul ul ul{
    top: 0px;
    left:170px;
    display: none;
        visibility:hidden;
    border: 1px solid #DDDDDD;
}

#nav ul li{
    display: block;
        visibility:visible;
}
#nav li:hover > ul{
    display: block;
        visibility:visible;
}