in src/main/resources/js/bootstrap-2.3.2.js [516:538]
, show: function () {
var dimension
, scroll
, actives
, hasData
if (this.transitioning || this.$element.hasClass('in')) return
dimension = this.dimension()
scroll = $.camelCase(['scroll', dimension].join('-'))
actives = this.$parent && this.$parent.find('> .accordion-group > .in')
if (actives && actives.length) {
hasData = actives.data('collapse')
if (hasData && hasData.transitioning) return
actives.collapse('hide')
hasData || actives.data('collapse', null)
}
this.$element[dimension](0)
this.transition('addClass', $.Event('show'), 'shown')
$.support.transition && this.$element[dimension](this.$element[0][scroll])
}