[jQuery] Accordion implementation

[jQuery] Accordion implementation

I have Firefox blinking every now and again when the accordion fx is
activated. It looks like it has to do with the scrollbars. I didn't
try it in any other browser.
I also thought I'd play a bit and see if the accordion effect was
protected from the double-click ".slideup/.slidedown" height issue
(solved by using oncomplete or the newer automagic-auto). It -- mostly
-- is protected. If you double-click a single link, the problem
doesn't occur.
However, if you click on one link and click on another while the first
is being shown, you get double-opens and can get truncated heights.
Due to the timing required, it was easiest for me to click the top two
links to get this issue. Although it takes some effort to get this to
happen with this example, I suspect when asynchronous behaviours are
thrown in, it may show up more often.
-- jk