thead tr .header {
	background-image: url(/common_files/js/jquery/tablesorter/bg.gif);
	background-repeat: no-repeat;
	background-position: center right;
	cursor: pointer;
}	
thead tr .headerSortUp {
	background-image: url(/common_files/js/jquery/tablesorter/asc.gif);
}
thead tr .headerSortDown {
	background-image: url(/common_files/js/jquery/tablesorter/desc.gif);
}