Thanks for the mod, it's working, but there is one problem with bbcodes. I updated the database of my forum from 3.0.12 to 3.1.6 and then installed the mod for mathjax. Formulas in my old forum were surrounded by bbcodes [tex][/tex], so I changed these codes in the ACP Math BBCode Settings.
But formulas in old messages did not render, they displayed as simple text between bbcodes [tex][/tex]. I added new message - and formulas in this new message appeared correctly. I changed one of the old messages - and formulas appeared in this message!
For example, the in the third message of the topic http://www.dmath.ru/forum/viewtopic.php?f=14&t=224
formulas render correctly, but formulas in the first and the second messages do not render.
May be it's possible to fix this problem?