In the file /usr/sausalito/ui/web/libJs/collapsibleList.js (My file was dated Dec 12, 2000.) Line 249 has: 249 doc.write("<DIV ID=\""+_cList_elementId+"\"STYLE=\"position:absolute; visibility:hidden; left:"+_cList_x+";top:"+_cList_y+";\">"); I changed the "visibility:hidden" to "visibility:visible", and it works fine.
I'd be extremely wary of using anything other than IE or the Netscape 4 family of browsers with the Cobalt admin.
For whatever reasons (most likely budgetary) the admin wasn't designed to support "(at the time) next generation", w3c compliant browsers like Mozilla, Safari, Konqueror etc, and Sun never saw fit to update the Admin before EOLing the product.
While altering the collapsibleList.js allowed you to see the left hand navigation, there may be other Javascript that doesn't work with Mozilla that could cause more serious problems down the line. (for example, if there's incompatible javascript somewhere in the series of scripts/pages to create a new account, it could end up failing half way through and you'd end up with some kind of email hash conflict).
All that said, if you *do* decide to continue using Mozilla, keep the list updated with any problems you run into :)
-- Alan Storm astorm@xxxxxxxxxxxxx