Base Library:
<div id="accordionID">
<div id="Panel1">
<div id="Header1">
Overview
</div>
<div id="Content1">
... content text ...
</div>
</div>
</div>
new Rico.Accordion( 'accordionID',
{panelHeight:200, cookieName: 'Rico.AccCookie'} );
The cookieName parameter causes the accordion to remember its current state in a cookie.