/* TODO: handle these responses: 

1.
HTTP/1.0 200 OK
Refresh: 0;URL=http://mail.google.com/mail/

2.
HTTP/1.0 302 Moved Temporarily
Location: https://www.google.com/accounts/ServiceLogin?service=mail&passive=true&rm=false&continue=http%3A%2F%2Fmail.google.com%2Fmail%2F%3Fui%3Dhtml%26zy%3Dl&bsv=zpwhtygjntrz&scc=1&ltmpl=default&ltmplcache=2

3.
HTTP/1.1 301 Moved Permanently
Location: /s/philip+sch%c3%b6gler

4. 
non-200 responses?

TODO: support following links.
TODO: support input fields.
TODO: support HTTPS.
TODO: support Cookies (with Set-Cookie header).
TODO: support Referer.
TODO: support Content-Length and keeping the connection open.

TODO: make yacc understand element_endtagless_P.

TODO support predefined &...;s (nbsp etc). Case sensitive?
TODO support tables.
TODO mailto
*/
support framesets?