Ajax Control Toolkit (Now part of the ASP.NET Ajax Library) - Accordion Control CLOSED Startup State

I get many (MANY) email from customers who are struggle to answer specific technical problems. As time permits I'm going to start answering them here,
I recently received an email from a developer building an application using the Ajax Control Toolkit and he needed his page to contain an Accordion Control in which all Panes were CLOSED when the page was initially loaded.
Like this ..

The Accordion Control in the earliest versions of the Ajax Control Toolkit lacked this ability but now it's pretty easy.
By default, the Acco ...