I'm trying to get a style switcher going for my site(for the colour scheme)

Question

I'd like to give my users the choice of changing the colour
scheme of my site (
http://chaoscoalition.net) at
will, through css style changing buttons such as the ones on the
forum's theme(
http://forum.chaoscoalition.net).
I've read many articles and tutorials on how to set up
alternate stylesheets for a webpage, but I can't quite get it
right. Every time I seem to have gotten it right, it either opens
the php file that sets the cookie, or it opens the stylesheet as
text. I want to end up with something like the forum's theme
changing module, but for the homepage.
I have 5 different versions of the page made, all as
different pages(php format), but I don't understand how to link the
buttons at the top to trigger the stylesheet change, and I don't
even knwo if it's possible to rely on a css file to change the
whole colour scheme of the page(which is image based).
It'd be great if someone could walk me through this, or offer
some tutorial that explains how to do this from scratch.
Thank you.

Answer 1

First, never use Fireworks or any graphics app to build HTML and CSS for you.  The resulting code is rigid, fragile and only good for quick comps or prototypes to show a client.  Use DW to generate actual site code.
Secondly, external stylesheets must not contain JavaScripts or X/HTML code as your green.css does.  Only CSS rules and comments are allowed inside external stylesheets - like so:
/**Green CSS**/
body {
     margin:0 auto;/**this centers page**/
     padding:0;
     width: 900px;
     font-family: arial, helvetica, sans-serif;
     color: white;
     background: green; /**this is green**/
Nancy O.
Alt-Web Design & Publishing
Web | Graphics | Print | Media  Specialists
www.alt-web.com/