Accordion: Stop A Change To A Section

Accordion: Stop A Change To A Section

Hi Guys,
I was wondering how to stop a change between accordion sections? I am
aware of the "changestart" event which I can bind to:
http://jqueryui.com/demos/accordion/#event-changestart
But it seems if I return false it still changes anyway? For example
the following doesn't stop the accordion from switching:
$(".accordion").accordion({
header: "h3",
clearStyle: true,
autoHeight: false,
change: function(event, ui) { return false; },
changestart: function(event, ui) { return false; }
});
Any tips?
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