See detail of the spec.
Request URL: http://www.kawa.net/works/ajax/romanize/romanize.cgi (POST method)
mode=hangul&ie=CHARSET&q=CHARSET
MODE is required; mode=hangul (fixed value).
CHARSET is optional; and default value is ie=UTF-8.
QUERY is URL encoded Korean phrases.
The response from server is a POX, Plain Old XML, format.
<?xml version="1.0" encoding="UTF-8" ?>
<ul>
<li>
<span title="seo">서</span>
<span title="ur">울</span>
</li>
</ul>