var currentImage = 0;
 
Event.observe(window, 'load', function() {
	var periodEx = createPE();

});

function createPE() {
    var homepageImages = $$('div#ImageTickerHolder div.img');
    var periodEx = new PeriodicalExecuter(function(pe) {
        new Effect.Fade(homepageImages[currentImage], { duration: 1});
        
        currentImage = (currentImage >= homepageImages.length - 1 ? currentImage = 0 : currentImage + 1);
        
        new Effect.Appear(homepageImages[currentImage], { duration: 1});
    }, 5);
    return periodEx;
}
//]]>