in templates/ydotm/bootstrap3.js [584:594]
$.fn.collapse = function (option) {
return this.each(function () {
var $this = $(this)
var data = $this.data('bs.collapse')
var options = $.extend({}, Collapse.DEFAULTS, $this.data(), typeof option == 'object' && option)
if (!data && options.toggle && option == 'show') option = !option
if (!data) $this.data('bs.collapse', (data = new Collapse(this, options)))
if (typeof option == 'string') data[option]()
})
}