maintaining state

[Lowell Kirsh]

I have created a web page which has a javascript tree of links to other
pages. There are also folders which contain the links. When a folder is
clicked, it expands. When clicked again, it contracts. Right now, when I
click a (non-folder) link on the page, the browser will go to that page.
But when I click 'back' on my browser, it goes back to my page of links,
but none of the folders which were opened are remembered. Is there a way
that the page can 'remember' the state of the folders?

Lowell