ul.dropdown, ul.dropdown li, ul.dropdown ul {
    list-style: none outside none;
    margin: 0;
    padding: 0;
}
ul.dropdown {
    float: left;
    position: relative;
    z-index: 0;/*597*/
}
ul.dropdown li {
    float: left;
    line-height: 1.3em;
    vertical-align: middle;
}
ul.dropdown li.hover, ul.dropdown li:hover {
    cursor: default;
    position: relative;
    z-index: 0;/*597*/
}
ul.dropdown ul {
    left: 0;
    position: absolute;
    top: 100%;
    visibility: hidden;
    width: 100%;
    z-index: 0;/*597*/
}
ul.dropdown ul li {
    float: none;
}
ul.dropdown ul ul {
    left: 99%;
    top: 1px;
}
ul.dropdown li:hover > ul {
    visibility: visible;
}