Can a rollover be delayed so user can move over it fast without triggering?

I have a gallery with an index area and a content area and rolling over the index images brings up a large image (by loading it in a new level) - but I’d like the user to be able to move the cursor from the index to the content area quickly without triggering. Is this even possible? Searches are turning up nothing applicable.


and click on any of the 6 portfolio galleries (bottom right 6 thumbnails) to see what I’m talking about.