ul.dropdown {
    list-style: none;
    margin:0;
    padding:0;
    width:100%;
    z-index:99;
}
ul.dropdown * ul {
    list-style: none;
    margin:0;
    padding: 0;
    display:none;
    position:absolute;
    z-index:99;
    width:150px;
}
ul.dropdown li {
    float:left;
}
ul.dropdown li * li {
    border:1px solid #fff;
    float:none;
    position: relative;
}
ul.dropdown ul * ul {
    left:98%;
    top:0;
}
ul.dropdown a {
    display:block;
}
ul.dropdown ul * a {
    height:100%;
}
ul.dropdown li:hover ul ul, ul.dropdown li:hover ul ul ul, ul.dropdown li:hover ul ul ul ul {
    display:none;
}
ul.dropdown li:hover ul, ul.dropdown ul li:hover ul, ul.dropdown ul ul li:hover ul {
    display:block;
}