Titus said:
I am interested in getting the drop downs as a method of removing
screen clutter - 30ish menu items to 4 main areas.
I would suggest not bother making the drop-down submenus accessible to
keyboard users, among which are blind users. Make the 4 top-level items
links to section index pages. List the submenu items as plain text links
on this page.
I suggest this because I am primarily a keyboard user myself. I've come
across a few DHTML menus that automatically open a submenu when focus is
put on the parent menu item. This can be a royal PITA. It means that if
I'm tabbing to get to the last menu, I have to go through all those
other menus first. For someone using a screen reader, they could still
end up listening to 30 links on every page. It is counter-productive.
Granted, there are usually ways for a keyboard user to get around these
annoynaces, but the point is the annoynace needn't be there to begin
with. A limited number of choices per page is not a bad thing. Don't
feel you need to include a site map on every page. Make a separate page
for that and/or include site search.