.tablesorter-default .header, .tablesorter-default .tablesorter-header{
    background-image: url(data:image/gif;base64,R0lGODlhFQAJAIAAACMtMP///yH5BAEAAAEALAAAAAAVAAkAAAIXjI+AywnaYnhUMoqt3gZXPmVg94yJVQAAOw==);
    background-position: center left;
    background-repeat: no-repeat;
}

.tablesorter-default thead .headerSortUp, .tablesorter-default thead .tablesorter-headerAsc, .tablesorter-default thead .tablesorter-headerSortUp {
    background-image: url(data:image/gif;base64,R0lGODlhFQAEAIAAACMtMP///yH5BAEAAAEALAAAAAAVAAQAAAINjI8Bya2wnINUMopZAQA7);
}

.tablesorter-default thead .headerSortDown, .tablesorter-default thead .tablesorter-headerDesc, .tablesorter-default thead .tablesorter-headerSortDown {
    background-image: url(data:image/gif;base64,R0lGODlhFQAEAIAAACMtMP///yH5BAEAAAEALAAAAAAVAAQAAAINjB+gC+jP2ptn0WskLQA7);
}

.tablesorter-header-inner {
    padding-left: 15px;
}