这里实现跑马灯的方法是，依次灭掉前一个灯和点亮后一个灯，再延时一会，不断循环，就可以看到跑马灯的效果了。
请在编译后，进入仿真，点全速运行看结果-Marquee realize here the approach is to eliminate the former followed by a light and lit a lamp post, and then one will be delayed, and constantly cycle, you can see the effect of the Marquee. Please compiled into the simulation, watch the results point to run at full speed
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001026s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.100526s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000870s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001083s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001443s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004870s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001283s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.010127s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015427s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001149s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 109374 [ RunTime:0.023249s ]
