New Option for Complete Site Index at Bottom of All Pages

Some of you have expressed the desire to have the complete site index shown at the bottom of all pages as it had been. This feature is now optional.
 
I added a small on/off icon () beside the "Site Index" menu option on the navigation bar at the bottom of each page. Clicking on this icon toggles the bottom-of-the-page site index on and off. The sample image just shown is live - it will enable the index.
 
The site should then remember your choice on all pages except the home page, which does not include this feature (due to technical difficulties).