Collapsable content page for Wordpress site

This is for a wordpress site. We have content that needs to have nested collapsible information. There are three or four levels of nesting. Within the content on some of these levels, we have tooltips for further information, which will need to be preserved. So Header Content List Each content list item should be clickable to reveal more information. Content List Yet more information. Header Content List Each content list item should be clickable to reveal more information. Content List Yet more information. Etc. We have Jquery Collapse-o-matic installed, but if you have a tool that would be better, that's fine too.