Collapsible menu and amount of links in a web page
One of my pages contain three levels of a collapsible menu (JS + CSS from mycssmenu.com). There are a dozen first level items displayed to users, each one with various second level items, and finally a lot of third level items, each one containing a link to open related content.
This generates a lot of internal links (300+). Google SEO recommends to have a 'reasonable' number of links in a page. How would I change the menu without affecting the page usability?
I would like to avoid users to have to open a new page just to only look for the wanted third level item he has found from the menu and follow its link. Hope I was clear, if not I could add a sample.