An introduction to my query:
I found a web page with pieces of code and a tutorial for what I will later describe, but did not bookmark it and the project I made containing this code was deleted by a two year old. Being something of a novice I did not completely understand the code but knew enough to use and modify it. As such, I do not remember it and cannot find it online.
The product of this tutorial was a single HTML document that created the illusion of having multiple pages by using divs and Z-index to change the background and page contents when you navigated within the document. To further explain, there were a given number of divs which had links in the navigation bar. When you clicked a link, the current page contents and background would appear swap with another, though in reality it was just being hidden. There was absolutely no JS or JQuery involved.
What I need:
If anyone has a link to this tutorial or another like it that would be fantastic. Otherwise, I can get by with an explanation of how to change/hide backgrounds using divs and Z-index.
I hope this all makes sense. Any help is appreciated.