#menu {

line-height: 90%;
background: #ffffff url() no-repeat left top;
padding: 0px;
margin-left: auto;
margin-right: auto;
text-align: center;
}

.menu_box ul{
list-style-type:none;
padding:0;
margin:0;
}

.menu_box li{
float:left;
position:relative;
z-index: 100;
}

.menu_box table{
position:absolute;
border-collapse:collapse;
z-index:80;
left:-1px;
top:25px;
}

.menu_box a, .menu_box :visited {
display:block;
font-family: Verdana;
font-size:12px;
font-weight:bold;
width:112px;
padding:7px 0;
color:#000;
background:#fff;
text-decoration:none;
margin-right:0px;
text-align:center;
border-top: 0px solid black;
border-bottom: 1px solid black;
border-left: 0px solid black;
border-right: 0px solid black;
}

.menu_box :hover{
color:#fff;
background:#888;

}

.menu_box ul ul {
visibility:hidden;
position:absolute;
width:107px;
height:0;
}

.menu_box ul li:hover ul,
.menu_box ul a:hover ul{
visibility:visible;
}