Or, at least, I think it is.
The first page with the menu works just fine, but when you go to any of the other pages it won't let you highlight the text to copy and paste - in certain circumstances.
It works fine on my home computer which is running Windows XP. I've been able to work with it in all browsers.
Does anyone have any ideas as to why? Might there be any work arounds? On 14.html which is the Index (as in book, not the main web page) the switch div is gone but it's still not working. However, I tested just the switch div script on another web-site without the previous/next page menu and that also doesn't work.
This is the switch div code: