bibtex2html can't recognize the style file in current dir (  -s
./customstyle.bst ) and it can't
deal with customize bib style file very well.

So, is it possible use different bibtex styles when I export to html?

For example:

#+BIBLIOGRAPHY: hbuuthesis plain  limit:t  option:-i export:html
\bibliographystyle{customstyle}
\bibliography{foo}

or:

#+BIBLIOGRAPHY: hbuuthesis plain  limit:t  option:-i export:html
#+BIBLIOGRAPHY: hbuuthesis customstyle  limit:t  option:-i export:latex