Telerik r.a.d.panelbar is a versatile component for building collapsible side-menu systems. It is developed to facilitate what is found in almost any Web site - the typical left/right-side navigation, but cannot be achieved using dropdown menu components. R.a.d.panelbar is built as a fully managed ASP.NET server control that generates DHTML output using an XML source file with the menu structure. Its visual appearance can be customized extensively (with or without CSS) to deliver attractive and convenient navigation - from standard Outlook-bars to fully graphical side-menus. The product offers wide cross-browser compatibility (Internet Explorer5+, NS6+, Mozilla, Opera) and is available in two editions: r.a.d.panelbar (full featured version) and r.a.d.panelbar Lite (limited free version).