#nav, #nav ul{
text-align:left;
margin:0;
padding:0;
list-style-type:none;
list-style-position:outside;
position:absolute;
z-index:100;
line-height:1.5em; 
}

/*讓首頁可以先下顏色，不在這裡使用
#nav a{
display:block;
padding:12px 14px;
color:#fff;
text-decoration:none;
background-color:#F2F2F2;
font-size:16px;
font-weight:bold;
font-family:'微軟正黑體','Microsoft JhengHei','arial';
}
*/

.nav_top{
background-color:white;
}

.nav_down{
-moz-box-shadow: 1px 0px 1px 0px #222222;
-webkit-box-shadow: 1px 0px 1px 0px #222222;
box-shadow: 1px 0px 1px 0px #222222;
}

#nav li{
float:left;
position:relative;
}

#nav ul {
position:absolute;
display:none;
width:228px;
/*top:48px;*/
background-color:white;
}

#nav li ul a{
width:200px;
height:auto;
float:left;
}

#nav ul ul{
top:auto;
}	

#nav li ul ul {
left:228px;
margin:0px;
top:-1px;
}

#nav li:hover ul ul, #nav li:hover ul ul ul, #nav li:hover ul ul ul ul{
display:none;
}
#nav li:hover ul, #nav li li:hover ul, #nav li li li:hover ul, #nav li li li li:hover ul{
display:block;
}