Toggles all descendant checkboxes in a tree structure to match the checked state of the parent checkbox. Given a checkbox's ID, finds its parent and cascades its 'checked' value to all child checkboxes within the same tree.
The DOM element ID of the parent tree checkbox.
Toggles all descendant checkboxes in a tree structure to match the checked state of the parent checkbox. Given a checkbox's ID, finds its parent and cascades its 'checked' value to all child checkboxes within the same tree.