When I try to view your realtime.txt file, I sometimes get a blank page and sometimes a 404 (with Firefox), but always a 404 with IE. I don't know how the banner script is apparently managing to get data from that. I am wondering if your realtime.txt is actually not going to
http://levinweather.host22.com/realtime.txt and wherever it is actually going, the PHP banner script manages to pick it up from there, but http does not. If you turn on ftp logging, the realtimeftplog.txt file may give a clue.