The Web Viewer in FileMaker allows you to build deeper functionality by integrating web libraries into a custom application. Jeremy Brown introduces a Web Viewer Integrations Library free for your use.
The introduction of FileMaker 13 gave us a tremendous amount of new user interface functionality. One example of this is the venerable Hamburger Menu (a.k.a: Sidebar, a.k.a: Drawer.) Regardless of how you feel about this widget, this example is meant to demonstrate a technique that you can use how you wish in your own solutions. The ultimate implementation is up to you.