A simple jquery dropdown box when clicked

I can't find the one I want anywhere, 开发者_运维百科yet it's really simple. All I want is a simple jQuery script that when I click on a link, it pops a small div out (over the top of the current page, not hiding a DIV and sliding it in).

If I've not explained it very well, best think to look at is the notifications popout on Facebook, that's basically what I want.

This is also a good example, except it doesn't seem to work properly when I download the code from here: http://www.awmcreative.com/blog/jquery/jquery-pop-menu/#more-713

Here's an image of what I mean:

Doesn't matter if it retracts by clicking again, or by moving mouse out of the area.

Cheers.

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jQuery UI has this functionality built in.