I've finally had a chance to put a fiddle together, which hopefully shows the issue (which may just be my own ignorance).
http://jsfiddle.net/GHWX3/4/ So if you run that fiddle as-is, nothing happens the first time you roll over either of the tip anchors, but you do see the tip on each subsequent rollover. that makes sense, since the Tip is being attached, but not explicitly fired, on the first mouseover. What I can't figure out is how to actually fire the tip. If I uncomment the "thistip.show()" line, I get the identical behavior as before. So, obviously I'm doing something wrong--I just can't figure out what it is. (Also, I stripped out the store/retrieve stuff to simplify the example). The other, perhaps expected, behavior has to do with adding ":once" after "relay:a(tipanchor)". If you have "relay:a(tipanchor):once", then the mouseover is not fired once per child element, but once per parent. So, a tip gets attached to the first tip anchor that is moused over, and that's it. No other tip anchor gets the tip behavior. I guess that makes sense? ":once" means "once per parent" rather than "once per child"? For the record, I likely won't use this delegation method for Tips, but I would like to understand it, now that I've started down the path. And I haven't had time to look at the Behavior stuff, though I still intend to. Thanks, Ben
