Hi all. I'm trying to use the SlideDown/SlideUp effects to build nifty
dropdown menus. I've run into a few stumbling blocks and wanted to run
things by the experts. So two questions:

- Is there a way to figure out the progress so far in an event? I'd
like it so when you mouseout of menu that's in the process of sliding
down from a mouseover, that is stop halfway and start sliding up
immediately. This requires that I get the current percentage progress
from the SlideDown, stop that event, and start a new SlideUp that
starts with that value for progress. I didn't see any property in the
effect for this.

- Is there an event that fires at the end of an effect that lets me
set a callback? Seems like that would be pretty handy.

The website's article on EffectQueues was pretty handy for all this:
http://wiki.script.aculo.us/scriptaculous/show/EffectQueues


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