General Purpose Contact Form

This form uses a post-to-itself method. I developed this about two years ago when I needed a simple contact page for my site. This form reposts to itself upon submit without having to use other testing .php pages, which is very convenient. I have been providing this form or an adapted version, upon request for many buyers on RentACoder and figured I would place it here if anyone would like to use it or learn from it. You can find the code here. For a working copy of this code, including configuration, view my contact page.

Tested successfully in both Firefox 2.0/3.0 and IE7. Click the picture to view the working demo.