table.tablesorter thead tr .header {
	/*background-image: url(bg.gif);*/
	background-repeat: no-repeat;
	background-position: center right;
	cursor: pointer;
}

table.tablesorter thead tr .headerSortUp {
	background-image: url(img/sort_asc.png);
}
table.tablesorter thead tr .headerSortDown {
	background-image: url(img/sort_desc.png);
}