TOC- Make Only One Layer Visible at a Time

Discussion created by askewwa on Mar 25, 2014
Latest reply on Mar 26, 2014 by JUihlein-esristaff
I am using the table of contents widget written by nliu located at the following link:

I was wondering if it is possible to modify the widget to only make one layer visible at a time?  I would like to keep the tree structure of the widget for grouping/ organizational purposes, but force it to be where only one check box in each group layer can be checked at a time.  Does anyone know how I could go about doing this?