accessible drop-down menus in d7

Hi all,

I'm very much a newbie to drupal 7, so forgive what may be a rather inane question. I should also point out at the start of this post that I'm a blind drupal user and most of my work is carried out on the mac.

Ok I'll be as brief as possible. I had an old, perfectly functional and adequate d6 site. The structure was based around a very very simple menu which had 4 top-level menu items. When I activated one of them (say the link called "teaching") all of the courses I taught expanded out as submenu items.

So I updated to d7 and lo and behold, the top level menus were there, but when I clicked on "teaching" none of the links to the submenu items popped out. I'm using standard d7 core and the Bartik theme.

I tried to install a theme called Bartik Plus, which purports to solve the issue. However, I found that it created problems with the screenreaders I used to test the site. The list expanded when the requisite link was pressed, but promptly disappeared again. I believe this is based on Superfish, and there seems to be something in that which causes the submenus to fold back into the main menu item after a specific delay.

So is there an accepted accessible way to achieve this? I can of course do an entire site re-design but don't want to if at all possible. I'm happy to change themes, that isn't an issue.

Thanks for any help,

Dónal