Twitter bootstrap 3.0 icon change on collapse

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The collapse events are handled differently in Bootstrap 3. Now it would be something like:

$('#collapseDiv').on('shown.bs.collapse', function () {
   $(".glyphicon").removeClass("glyphicon-folder-close").addClass("glyphicon-folder-open");
});

$('#collapseDiv').on('hidden.bs.collapse', function () {
   $(".glyphicon").removeClass("glyphicon-folder-open").addClass("glyphicon-folder-close");
});

Demo: http://www.bootply.com/73101

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