Accordion is a collection of multiply panes, each of which has a header and content. To make a pane visible, you need just to click on the appropriate header (depending on the mode [single or multi],you can expand one or several panes at a time).
DhtmlxAccordion provides 4 skins and various items manipulations (showing/hiding, docking/undocking and etc.).
Also it gives you an opportunity to manipulate with the header, icon and locate various items in the cells: objects, dhtmlx components, web pages etc.
And just like a dhtmlxLayout, dhtmlxAccordion provides views, that allow to show different contents for the same cell, and the possibility to add Google Maps to an application..