Hi, again…
Forgotten to mention the possibility of enforcing the use of mathml by setting force_mathml=yes (I’m not sure if this can be done easily in OEF)
In that way a browser will always show your tex as mathml.(however, in case of a mathml syntax error, there is an immediate fallback to math-with-images)
The Firefox / Gecko family of browsers will display mathml natively (fast !) and all others will have to do with the colossal mathjax library…
Joke