function galeria(n) {
    $("._principal").attr("src", "img/layout/produtos/ampliada/" + n);
}

// START CARROSSEL
$(document).ready(function () {
	setInterval( "slideSwitch()", 6000 );

    if ($("._produtos").length > 0) {
        $("._produtos").jcarousel({
            visible: 6,
            scroll: 1,
            animation: 500,
            wrap: 'last',
            initCallback: mycarousel_initCallback,
            // This tells jCarousel NOT to autobuild prev/next buttons
            buttonNextHTML: null,
            buttonPrevHTML: null
        });
    }
});

function mycarousel_initCallback(carousel) {
    jQuery('._next').bind('click', function () {
        carousel.next();
        return false;
    });

    jQuery('._back').bind('click', function () {
        carousel.prev();
        return false;
    });
};

function slideSwitch() {
    var $active = $('#slideshow IMG.active');

    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

    // use this to pull the images in the order they appear in the markup
    var $next =  $active.next().length ? $active.next() : $('#slideshow IMG:first');

    // uncomment the 3 lines below to pull the images in random order
    
    // 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}, 1000, function() {
            $active.removeClass('active last-active');
        });
}