It could be something along the following lines:

var currentItem, snapBackTimer;

// On mouseout
snapBackTimer = setTimeout(yourSnapBackCall, 500);

// On mouseover
snapBackTimer && clearTimeout(snapBackTimer);
snapBackTimer = null;
if (currentItem == enteredItem)
   return;
currentItem = enteredItem;
yourSnapDownCall();

-- 
Christophe Porteneuve aka TDD
[EMAIL PROTECTED]

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