.tablesorter thead{cursor:pointer}.headerSortDown:after,.headerSortUp:after{content:' ';position:relative;left:10px;border:7px solid transparent}.headerSortDown:after{top:10px;border-top-color:silver}.headerSortUp:after{bottom:15px;border-bottom-color:silver}.headerSortDown,.headerSortUp{padding-left:20px;opacity:.8}