window.addEvent('load', function() {
	
	if( $('historia') ) {
		$$('#historia ul li ul li a.opener').each(function(element) {
			element.addEvent('click', function(event) {
				event.stop();
				
				var container = this.getParent().getElement('div');
				var closer = container.getElement('a');
				
				container.setStyles({ 'display' : 'block' });
				element.setStyles({ 'display' : 'none' });
				
				closer.addEvent('click', function(event2) {
					event2.stop();
					
					container.setStyles({ 'display' : 'none' });
					element.setStyles({ 'display' : 'block' });
				});
			});
		});
	}
	
});