Comment from Sean on 2011-06-06:
Here’s a FIX for FF 3.6.17: I’m not sure why your example on this page works (transitional doctype?), but in my copy locally this happens:
After the first move you have to click either button twice to get it’s click event to register. I fixed this by adding style.height to both tags. Apparently they need “layout”. No problems in IE.
