In this video, I'll show onw technique you can use to re-create the menu of the met site ( http://metmuseum.org ) as an exercice to practice widget visibility and dynamic panel skills.
This first technique uses groups of widgets for each submenu, with show / hide interactions that control which menu is displayed at any given time. When using this technique, remember to use the "Bring panel to front" options to avoid the most common display issue.
In the next video, we'll have a look at a technique that uses dynamic panels instead to display each sub-menu.