th.headerSortUp {
    background-image: url(../images/sort_asc.gif);
    background-color: #FFF;
}
th.headerSortDown {
    background-image: url(../images/sort_desc.gif);
    background-color: #FFF;
}
th.header {
    background-image: url(../images/sort.gif);
    cursor: pointer;
    font-weight: bold;
    background-repeat: no-repeat;
    background-position: center right;
    padding-right: 20px;
    border-left: 1px solid #dad9c7;
    margin-right: -1px;
}