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I have built a tree navigation for pages I have in a site, that loads the content of each page into FCK editor. The parent nodes are shown at the beginning, and the child nodes are in display:none hidden divs that are toggled with scriptaculous bindup and binddown. If the user clicks on one of the children, I want that div to remain visible on page refresh. I''m pretty new with app programming, and I''m not sure how to tackle this. I was thinking session, but I have a suspicion it might be easier? I''ve tried sett...