gistfile1.txt

 if (_postsFrameChangedNotifications && !_inhibitFrameAndBoundsChangedNotifications)
        objj_msgSend(CachedNotificationCenter, "postNotificationName:object:", CPViewFrameDidChangeNotification, self);
    var transform = _superview ? _superview._boundsTransform : NULL;
    if (transform) var ____p = { x:CGPointMake(origin.x, origin.y).x * transform.a + CGPointMake(origin.x, origin.y).y * transform.c + transform.tx, y:CGPointMake(origin.x, origin.y).x * transform.b + CGPointMake(origin.x, origin.y).y * transform.d + transform.ty }; else var ____p = { x:origin.x, y:origin.y }; _DOMElement.style.left = ROUND(____p.x) + "px";_DOMElement.style.top = ROUND(____p.y) + "px";;
}


IE is giving an SCRIPT87: Invalid argument. 
anonymous code (107), line 376 character 360

on the following:

_DOMElement.style.top = ROUND(____p.y) + "px"