Works fine here. tried some basic "haxxoring" of your email form but to no success. Gave up. Could try further but to be honest noone would.

Not understanding why youve used seperate folders for everything though.

lol you need to get into the habit of using text files for content and html for structure, use php to load the contents of the text files into the pages.

I use folders to segregate off files and piccies, but I shove all my pages in one folder.

lol well I usually have the index.php as the only html structured coded page on a site.

It contains the menu and headers and footers (banners and copyright notices).

Then the rest of the pages are made in text files.

home.txt
about.txt
contact.txt
links.txt

Using html where appropriate in the text files but not to structure it. The index.php file will handle that.

http://www.m3-computers.com/test/itskills/index.php?page=main.txt is an example. Bare in mind its now an old defunct page that im no longer developing and may display oddly in firefox, so fire up IE to browse it

No iframes are used in it at all. Just the one index.php file, loading the text files into it. if you take the text file names at the end of the url, you can load them up and have a look at the contents.