public function register_levbank_message() {
		global $_G;
		$uid = $_G['uid'];
		if (!$uid) return '';
		$xcid = getcookie('levbankxcid');
		if (!$xcid) return '';
		if (strpos($_GET['referer'], 'shuadan') ===FALSE) return '';
		$xc = DB::fetch_all("SELECT * FROM ".DB::table('lev_bank_xc')." WHERE xcid='{$xcid}'");
		if (self::$PL_G['ckip']) {
			foreach ($xc as $r) {
				$ip = cutstr($r['regip'], 10, '');
				if ($ip && strpos($_G['clientip'], $ip) !==FALSE) return '';
			}
		}
		$maxxc = intval(self::$PL_G['maxxc']);
		if ($maxxc >0) {
			$count = DB::result_first("SELECT COUNT(*) FROM ".DB::table('lev_bank_xc')." WHERE xcid='{$_G['uid']}'");
			if ($count >=$maxxc) return '';
		}
		//新增老用户判断，如果已经存在了，就不可能成为另外的人的下线
		$userinfo = DB::fetch_first("SELECT * FROM ".DB::table('common_member')." WHERE uid='$uid'");
		$regdate = substr(date("YmdHis",$userinfo['regdate']),0,12);
		$nowdate = substr(date("YmdHis"), 0,12);
		$havleader = DB::fetch_first("SELECT COUNT(*) cnt FROM ".DB::table('lev_bank_xc')." WHERE uid='$uid'");
		if($regdate == $nowdate && $xcid<$uid && $havleader['cnt'] == "0"){
			DB::insert('lev_bank_xc', array('uid'=>$uid, 'bbsname'=>$_G['username'], 'xcid'=>$xcid, 'regip'=>$_G['clientip'], 'addtime'=>TIMESTAMP));
		}
	}