Here is a contact form for use with PHP or another server-side language written in HTML5 and JavaScript using the POST method.
All modern browsers supporting HTML5 are supported. There may be issues with earlier versions of Internet Explorer (as usual). If so, please let me know as I don't have Internet Explorer. It's tested on Firefox (Linux), Chrome (Linux), and Safari (iOS 7).
Copyright (C) 2014 Elliot J. Reed, CyanideSystems
Licenced under the GNU AFFERO GENERAL PUBLIC LICENSE (v3). See: LICENCE.txt