Output encoding of HTML

output encoding of HTML pages is set according to SP_ENCODING

you must instruct browser to switch to proper encoding by following meta tag:

<meta http-equiv="Content-Type"
      content="text/html; charset=iso-8859-2">

meta tag can be inserted automatically by stylesheets:

<!DOCTYPE style-sheet PUBLIC "-//James Clark//DTD DSSSL Style Sheet//EN" [
<!ENTITY docbook.dsl SYSTEM "/path/to/your/copy/of/dsssl/html/docbook.dsl" CDATA DSSSL>
]>
<style-specification id="my-docbook-html" use="docbook">

(define %html-header-tags% 
  '(("META" ("HTTP-EQUIV" "Content-Type") 
            ("CONTENT" "text/html; charset=iso-8859-2"))))

</style-specification>

<external-specification id="docbook" document="docbook.dsl">