In this task we'll prepare the demo page and the other files we'll need ready for the script.
To make the benefits of this technique obvious, we'll need to use a number of extra elements that strictly speaking aren't part of the required elements for the sidebar that we'll be fixing in place.
The sidebar that we'll use as the focus of this example will need to sit within the structure of a complete page, and to see the fixed position effect, the page will also need to be quite long.
We'll be using a range of HTML5 elements when building our demo page and you should be aware that these are not supported in older versions of some browsers. If you find that you do need to support legacy browsers, you'll need to use the html5shiv script available at Google Code (http://code.google.com/p/html5shiv/).