ul {
    margin: 0;
    padding: 0;
    list-style: none;
    }
    
ul li {
    float:left;          
    width:80px;
    position: relative;
    }
    
li ul {
    position: absolute;
    left: -20px; /* Set 1px less than menu width */
    top: 24px;
    display: none;
    }

/* Styles for Menu Items */
ul li a {
    display: block;
    text-decoration: none;
    color: #777777;
    background: #0c4907; /* IE6 Bug */
    padding: 4px;
    font-size: 10px;
    border-bottom: 0;
    text-align: center;
    z-index:100;
    }
    
.green_bg {
    background: #0c4907;
    border-bottom: solid 1px #FFF;
}    


li:hover ul, li.over ul { display: block; } /* The magic */

.nav {
    color: #FFF;
    font-size: 11px; 
    padding: 4px;
}