//产品详情
var viewswiper2 = new swiper('#prod-lbt .view .swiper-container', {
    allowtouchmove: true,
    autoplay: {
        delay: 4000,
        disableoninteraction: false,
    },
    on:{
        slidechangetransitionstart: function() {
            updatenavposition2()
        }
    }
});

$('#prod-lbt .arrow-left').on('click', function(e) {
    e.preventdefault();
    if (viewswiper2.activeindex == 0) {
        viewswiper2.slideto(viewswiper2.slides.length - 1, 1000);
        return
    }
    viewswiper2.slideprev()
});
$('#prod-lbt .arrow-right').on('click', function(e) {
    e.preventdefault();
    if (viewswiper2.activeindex == viewswiper2.slides.length - 1) {
        viewswiper2.slideto(0, 1000);
        return
    }
    viewswiper2.slidenext()
});

var previewswiper2 = new swiper('#prod-lbt .preview .swiper-container', {
    //visibilityfullfit: true,
    slidesperview: 'auto',
    allowtouchmove: false,
    on:{
        tap: function() {
            viewswiper2.slideto(previewswiper2.clickedindex)
        }
    },
    breakpoints: {
		0: {
            slidesperview: 3,
            spacebetween:10, 
        },
        580: {
            slidesperview: 3,
            spacebetween:15, 
        },
        760: {
            slidesperview: 4,
            spacebetween:10, 
        },
        960: {
            slidesperview: 4,
            spacebetween:12, 
            },
		1200: {
            slidesperview: 4,
            spacebetween:13, 
        },
        1500: {
            slidesperview: 4,
            spacebetween:15, 
		},
		2000: {
            slidesperview: 4,
            spacebetween:15, 
		},
	},
});

function updatenavposition2() {
    $('#prod-lbt .preview .active-nav').removeclass('active-nav');
    var activenav = $('#prod-lbt .preview .swiper-slide').eq(viewswiper2.activeindex).addclass('active-nav');
    if (!activenav.hasclass('swiper-slide-visible')) {
        if (activenav.index() > previewswiper2.activeindex) {
            var thumbspernav = math.floor(previewswiper2.width / activenav.width()) - 1;
            previewswiper2 .slideto(activenav.index() - thumbspernav)
        } else {
            previewswiper2.slideto(activenav.index())
        }
    }
}