table.tablesorter thead tr td { 
	background: #dedede;
    background-image: url(images/bg.gif); 
    cursor: pointer; 
    background-repeat: no-repeat; 
    background-position: center bottom 10%;
	vertical-align: top;
}

table.tablesorter thead tr td.tablesorter-headerAsc { 
    background-image: url(images/desc.gif); 
}

table.tablesorter thead tr td.tablesorter-headerDesc { 
    background-image: url(images/asc.gif);
}

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