I have a problem in database connection after switching server
example
http://www.pnl-nlp.org/courses/ebooks/page.php?pid=101&bid=101&pageid=2256
http://www.pnl-nlp.org/courses/ebooks/page.php?pid=100&bid=100&pageid=2238
http://www.pnl-nlp.org/courses/ebooks/index.php?bid=101
http://www.pnl-nlp.org/courses/ebooks/index.php?bid=100
http://www.pnl-nlp.org/courses/ebooks/index.php?bid=58
