- "<td align=\"center\" class=\"%s\"><b>Hostname</b></td>\n"
- "<td align=\"center\" class=\"%s\"><b>IPv4 Address</b></td>\n"
- "<td align=\"center\" class=\"%s\"><b>Port</b></td>\n"
- "<td align=\"center\" class=\"%s\"><b>Country</b></td>\n"
- "<td align=\"center\" class=\"%s\"><b>Oper</b></td>\n"
+ "<td align=\"center\" class=\"%s_header\"><b>Hostname</b></td>\n"
+ "<td align=\"center\" class=\"%s_header\"><b>IPv4 Address</b></td>\n"
+ "<td align=\"center\" class=\"%s_header\"><b>Port</b></td>\n"
+ "<td align=\"center\" class=\"%s_header\"><b>Country</b></td>\n"
+ "<td align=\"center\" class=\"%s_header\"><b>Oper</b></td>\n"