Mootools Accordion bug in IE

I’ve happened across an apparent bug in the way Internet Explorer renders the Mootools Accordion javascript when inside a table. Specifically, I’m trying to use the Accordion to show and hide a new table row. I’ve put the stretcher div inside a td cell, which opens and closes correctly in Firefox, but exhibits two distinct problems in IE 6 and 7. For one, the action should be smooth, but is bouncy and jerky. For another, after the div collapses, it springs open a few pixels and remains that way, impacting the consistency of the table layout.

I’ve put together a simple demonstration page to illustrate this bug.

If anyone has any suggestions on how to correct this buggy behavior, I’d be much obliged.