MarkUsProject/Markus — pull request #978 by danielstjules (2013-01-20 09:18:17+00:00)
Title: Fix for issue 617: Display a modal warning users about functionality in IE, and suggesting switching browsers. Only shown on first visit of any session at the login page

This is in reference to: https://github.com/MarkUsProject/Markus/issues/617
It uses a modal for consistency, and it's only displayed at the beginning of each session. Otherwise you'd receive the notification on each redirect, including login errors.