// 获取无限级上级，传入openid、需要等级
		public function getUpAgent($openid, $level)
		{
			global $_W, $_GPC;
			$member = m('member')->getMember($openid);
			if($member['agentlevel'] >= $level){
				return $member;
			}else{
				if($member['agentid']){
					$this->getUpAgent($member['agentid'], $level);
				}else{
					return false;
				}
			}
		}