User language settings

[naugiedoggie]

Hello,

I would like to know how IE detects and sets the value expressed in
the Javascript navigator object property, userLanguage. I have
changed various values, such as locale, input language in control
panel, as well as setting the preferred browser language in Internet
Options. None of these changes change the value of
navigator.userLanguage, even after a system reboot.

I am using IE 8 on Win7 Pro, but I believe the answer will be
generic. If that is not the case, please let me know.

Thanks.

mp