tooltip does not show up in iframe

[kenkang20]

I am working on a legacy system which has many iframe using top frame's jQuery object. In a iframe page, the plot tooltip plugin is called, but tooltip doesn't show up because of follows.

$tip.appendTo('body').hide().css({position: 'absolute'});
'body' always means top frame's body instead of current iframe's body, so I have figured it out by this change

$tip.appendTo($('body')).hide().css({position: 'absolute'});