MOZILLA_FIVE_HOME=$LIBDIR
-MOZLOCALE=`echo $LANG | sed "s|_\([^.]*\).*|-\1|g"`
+MOZLOCALE="$(/usr/bin/locale | grep "^LC_MESSAGES=" | sed -e "s|LC_MESSAGES=||g" -e "s|\"||g" )"
+eval MOZLOCALE="$(echo $MOZLOCALE | sed -e "s|_\([^.]*\).*|-\1|g")"
[ -f $MOZILLA_FIVE_HOME/chrome/$MOZLOCALE.jar ] && MOZARGS="-UILocale $MOZLOCALE"