table.tablesorter thead tr th { 

    background-image: url(images/bg.gif); 

    cursor: pointer; 

    background-repeat: no-repeat; 

    background-position: right center;

}



table.tablesorter thead tr th{    border: 1px solid #dad9c7; }



table.tablesorter thead tr th.tablesorter-headerAsc { 

    background-image: url(images/asc.gif); 

}



table.tablesorter thead tr th.tablesorter-headerDesc { 

    background-image: url(images/desc.gif);

}



table.tablesorter thead tr .sortless{background-image:none; cursor: default;}