lanuage installation in mozilla

[Sam Johnston]

browsing d.o in mozilla causes dialog boxes to appear on my mozilla 1.3a 
on win32 system requesting that additional (asian) languages be installed.

could this not be achieved with images rather than what I assume is 
unicode? is there another workaround? or is this minor inconvenience 
considered a fair trade for internationalisation? is browser negotiation 
not effective?

 - samj