Persisting state on a master page's hierarchical list
<p>I'm writing an ASP.Net application (no AJAX, but maybe) and there's a requirement to have a list of companies graded under a traffic light system. I intend to have these in a collapsible hierarchical list on the Master page, e.g. Red expands to show companies, and then companies can be further expanded.</p>

<p>Question is, how can I keep the expanded list in the same place, with the same content visible, between page loads?</p>

<p>I'm only looking for pointers, not spoonfeeding ;-)</p>

<p>Mike K.</p>
