At this time the CMS is displaying a page for all "unsupported browser".
So it could be nice to improve it and this is some ideas:

• do not display a specific screen, just display a nice and modern pop-up (like the feedback on http://www.ametys.org/fr/index.html)
  or change the Ametys logo on the top by another color blinking during "one minute" and with a small message beside during a short time...
  => They are so many ideas... "smart" as the CMS
• list the compatible browser
• list the incompatible browser
• explain that is most of the case it works for new browser and it is just because the test are not already done.
  The goal is to minimize the impact and to be closer to the reality, because in most of the cases it works wonderfully.