.sort-arrow.descending {
    background-image:		url("/res/images/list_open.gif");
    text-decoration: none;
    width: 30px;
    height: 23px;
}
.sort-arrow.ascending {
    background-image:		url("/res/images/list_close.gif");
    text-decoration: none;
    width: 30px;
    height: 23px;
}