Dovrebbe essere sufficiente modificare, in showcase.js:
codice:
	click: function (event) {
		event.stop();
		var element = event.findElement('a');
		if (!this.running) {
			eval("this." + element.rel + "()");
			}		
		this.animate(element.rel);
		},
con
codice:
	click: function (event) {
		var element = event.findElement('a');
		if (!this.running) {
			eval("this." + element.rel + "()");
			}		
		this.animate(element.rel);
		},