Setup for Firefox (and browsers using own settings):

Tools >> Options >> General >> Network Proxy >> Settings >> Automatic proxy configuration URL:

Setup for Edge / Internet Explorer (and browsers using system settings, e.g. Chrome):

"Shortcut" for Win10: Settings (gear icon in the Start menu) >> Network and Internet >> Proxy >> Use configuration script >> Script address:

Win7,8,8.1,10: Control Panel >> Network and Internet >> Internet Options >> Connections >> LAN settings >> Use automatic configuration script >> Address:

If you use mobile connection (e.g. usb modem), the connection must be set up as well (in Connections >> Dial up and Virtual Private Network settings).

Account information will be asked for after you click on a database link in the "E-zdroje / E-resources" section at the main page.

Preset portable Firefox browser [100+MB] is available here:

Univerzal (cross platform) setup for Firefox: