I may be able to provide a translation of the default/supplied Apache error pages into Hungarian, by a native Hungarian supervised by a web-tech native English speaker.
Could someone kindly direct me to the appropriate documentation on formats and conventions, please?
Thanks in anticipation.

Lee Goddard
Internet Application Development
European Aviation Safety Agency
Administrative Directorate

E: Lee.Goddard@EASA.EU.int 
T: +49 221 89990 3221
F: +49 221 89990 3721
W: www.easa.eu.int

Post: Postfach 10 12 53, D-50452 Köln
Visit: Ottoplatz 1, D-50679 Köln