This is the source code for the changes/updates on the NOMAC website (www.nomac.nl).
Lots of info on what we use can be found at these URL's
- http://au.php.net/manual/en/function.filter-var.php
- http://wordpress.org/support/topic/404-pops-after-custom-form-submission-by-post
- http://codex.wordpress.org/Function_Reference/add_shortcode - to register shortcodes.
- http://adambrown.info/p/wp_hooks/hook - all wordpress hooks
- http://www.onextrapixel.com/2009/07/01/how-to-design-and-style-your-wordpress-plugin-admin-panel/