.nav ul { 
background-color: #DBDBDB;
position: absolute;
display:none; 
width:180px;
top:3.5em; 
}

ul#submenu{
padding: 5px 0 5px 0;
margin: 0;
}

ul#submenu li a{
font-family: Geneva, Arial, Helvetica, sans-serif;
color: #454F72;
width: 170px;
height: 18px;
line-height: 18px;
padding-top: 0;
text-align: left;
font-size: 12px;
padding-left: 10px;
text-transform: none;
margin: 0;
text-decoration: none;
}

.nav ul li{
list-style-type: none;
}

.nav li ul a{
width:12em;
height:auto;
float:left;
}

.nav li ul a:hover{
    background: none;
    background-color: #F5F5F5;
}

.nav ul ul{
top:auto;
}	

.nav li ul ul {
left:12em;
margin:0 0 0 10px;
}

.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;
}