$(document).ready(function(){

    // prepare slideshow

    $('.image-holder:first').addClass('active');

})

// slideshow

function slideSwitch() {

	var $active = $('.image-holder.active');

	if ( $active.length == 0 ) $active = $('.image-holder:last');

	var $next =  $active.next().length ? $active.next() : $('.image-holder:first');

	$active.addClass('last-active');

	$next.css({opacity: 0.0})
		.addClass('active')
		.animate({opacity: 1.0}, 2000, function() {
			$active.removeClass('active last-active');
		});

}

$(function() {
	setInterval("slideSwitch()", 5000);
});