I have a need to display SharePoint content as a treeview. What are the available options? I'd rather use a solution that doesn't require server side implementation (hosted SharePoint), and works on both SP 2007 and SP 2010.
My content could be either default SharePoint stuff (sites/lists/folders/items), or specific content (e.g. topics/documents/Web pages).
What I am looking for is similar to the treview available in the left navigation area of SharePoint sites, but I need one that I can customize with my own hierarchy and icon set.