jQuery(document).ready(function($){
	setInterval(function () {
		var $active = $('#slideshow img.active');
		if ( $active.length == 0 ) $active = $('#slideshow img:last');
		var $sibs  = $active.siblings();
		var rndNum = Math.floor(Math.random() * $sibs.length );
		var $next  = $( $sibs[ rndNum ] );
		$active.addClass('last-active');
		$next.css({opacity: 0.0})
			.addClass('active')
			.animate({opacity: 1.0}, 3000, function() {
				$active.removeClass('active last-active');
			});    
	}, 5000);
	
	setInterval(function () {
		var $active = $('#slideshow2 img.active');
		if ( $active.length == 0 ) $active = $('#slideshow2 img:last');
		var $sibs  = $active.siblings();
		var rndNum = Math.floor(Math.random() * $sibs.length );
		var $next  = $( $sibs[ rndNum ] );
		$active.addClass('last-active');
		$next.css({opacity: 0.0})
			.addClass('active')
			.animate({opacity: 1.0}, 3000, function() {
				$active.removeClass('active last-active');
			});    
	}, 5000);
	
	setInterval(function () {
		var $active = $('#slideshow3 img.active');
		if ( $active.length == 0 ) $active = $('#slideshow3 img:last');
		var $sibs  = $active.siblings();
		var rndNum = Math.floor(Math.random() * $sibs.length );
		var $next  = $( $sibs[ rndNum ] );
		$active.addClass('last-active');
	    $next.css({opacity: 0.0})
			.addClass('active')
			.animate({opacity: 1.0}, 3000, function() {
				$active.removeClass('active last-active');
			});    
	}, 4000);
	
	setInterval(function () {
		var $active = $('#slideshow4 img.active');
		if ( $active.length == 0 ) $active = $('#slideshow4 img:last');
		// 3 linee che servono per far comparire le immagini in ordine casuale
		var $sibs  = $active.siblings();
		var rndNum = Math.floor(Math.random() * $sibs.length );
		var $next  = $( $sibs[ rndNum ] );
		$active.addClass('last-active');
		$next.css({opacity: 0.0})
			.addClass('active')
			.animate({opacity: 1.0}, 3000, function() {
				$active.removeClass('active last-active');
			});    
	}, 4000);
	
	setInterval(function () {
		var $active = $('#slideshow5 img.active');
		if ( $active.length == 0 ) $active = $('#slideshow5 img:last');
		var $sibs  = $active.siblings();
		var rndNum = Math.floor(Math.random() * $sibs.length );
		var $next  = $( $sibs[ rndNum ] );
		$active.addClass('last-active');
	    $next.css({opacity: 0.0})
			.addClass('active')
			.animate({opacity: 1.0}, 3000, function() {
				$active.removeClass('active last-active');
			});    
	}, 5000);
});