in themes/kube/static/js/kube.js [1192:1201]
removeActive: function(item)
{
item.$box.removeClass('open');
item.$el.removeClass('active');
if (item.$caret !== false) item.$caret.addClass('down').removeClass('up');
if (item.$parent !== false) item.$parent.removeClass('active');
this.opts.currentItem = false;
},