.expandable-list dt{
    cursor: pointer;
    background: url('images/collapsed.png') no-repeat left;
    padding: 0 0 5px 15px;
    font-weight: bold;
}
.expandable-list dt.expanded {
    background: url('images/expanded.png') no-repeat left;
}

.expandable-list dd {
    display: none;
    margin: 0 0 10px 15px;
    padding: 0 0 10px 0;
    border-bottom: 1px solid #f1f1f1;
}

.expandable-list dd.show {
    display: block;
}