YUI().use('node-base', 'node-style', 'event-base', function(Y) {    
    var classList = [
            'cancun-sunset',
            'catalina-hiking',
            'catalina-ocean',
            'hong-kong',
            'korea-gate',
            'laos-temple',
            'morocco-market',
            'nepal-red',
            'nepal-sheep',
            'ping-an',
            'semporna-hut'
        ],
        useIndex = Math.floor(Math.random() * classList.length),
	    links = Y.all('a'),
		docBody = Y.one('body');
				
	docBody.addClass(classList[useIndex]);	

	links.on('click', function(e) {
		e.preventDefault();
		window.open(e.target.get('href'));
	});
});