table thead tr .tablesorter-header {
    background: url(images/tablesorter/bg.gif) center right no-repeat;
    cursor: pointer;
}
.odd {
    background-color:#fcfcfc;
}
table thead tr .tablesorter-headerAsc {
    background-image: url(images/tablesorter/asc.gif);
}
table thead tr .tablesorter-headerDesc {
    background-image: url(images/tablesorter/desc.gif);
}
table thead tr .tablesorter-headerAsc,
table thead tr .tablesorter-headerDesc {
    background-color: #68b7ef;
    color: #fff;
}

table thead tr .sorter-false,
table thead tr .sorter-false {
    background-image: none;
    cursor: default;
}