itemid,ID,
title,证书标题,
style,颜色,
content,内容,
authority,发证机构,
thumb,标题图,
hits,点击次数,
username,会员名,
addtime,添加时间,
fromtime,开始时间,
totime,过期时间,
editor,编辑,
edittime,修改时间,
status,状态,
linkurl,链接地址,
note,备注,