These are pop-out java menu applets available in numerous themes and suitable for a sidebar navigation layout with the menu positioned at the side of your page. The menus have pop-up submenus, which can pop up over anything on your page - e.g. frame edges, HTML content, flash movies, etc - but are easily removed again afterwards - just like a submenu for normal computer applications. Buttons and menu-items are non-sticky, which means they release immediately unless a submenu launches.
