startpage_norefresh.htm => opens the TML ticketshop at exactly 11u.00m.00s. and doesn't refresh the page.
startpage_refresh_after4sec.htm => opens the TML ticketshop at exactly 11u.00m.00s. and does 1x refresh at exactly 11u.00m.04s.
startpage_refresh_after1min.htm => opens the TML ticketshop at exactly 11u.00m.00s. and does 1x refresh at exactly 11u.01m.00s.

eerst alle container browser vensters aanmaken in tabs, manueel inloggen op https://my.tomorrowland.com zodat cookie correct wordt aangemaakt (niet nodig).
dan in elke container browser venster, deze pagina openen http://tomorrowland.dailymichael.be/. Tip: tijdelijke link in bookmark bar maken.

25 vensters openen met startpage_norefresh.htm
25 vensters openen met startpage_refresh_after4sec.htm
25 vensters openen met startpage_refresh_after1min.htm

Firefox add-ons:
Firefox Multi-Account Containers
Tab Rotator
Image Block

Google Chrome add-ons:
MultiLogin
Revolver - Tabs
Wizmage Image Hider