Using multiple CSS files on one page; how do I do this?

I want to make a page that will have several different templates I want to show off. I want to write something where I can have a menu to select different CSS sheets, and then reload the page using said sheet. How would I do this?

 

Try setting a cookie and give it the name of the current active style sheet.

Lets say you had 3 style sheets: style1.css, style2.css, style3.css

The simplest way would be too do something like this

<link rel="stylesheet" type="text/css" href="style<?php echo $_COOKIE['style']; ?>.css" />

Of course youd have to check the cookie was actually set, and a valid style but hopefully you get the idea