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/**
 * jQuery-viewport-checker - v1.8.8 - 2017-09-25
 * https://github.com/dirkgroenen/jQuery-viewport-checker
 *
 * Copyright (c) 2017 Dirk Groenen
 * Licensed MIT <https://github.com/dirkgroenen/jQuery-viewport-checker/blob/master/LICENSE>
 */

! function(a) {
    a.fn.viewportChecker = function(b) {
        var c = {
            classToAdd: "visible",
            classToRemove: "invisible",
            classToAddForFullView: "full-visible",
            removeClassAfterAnimation: !1,
            offset: 100,
            repeat: !1,
            invertBottomOffset: !0,
            callbackFunction: function(a, b) {},
            scrollHorizontal: !1,
            scrollBox: window
        };
        a.extend(c, b);
        var d = this,
            e = {
                height: a(c.scrollBox).height(),
                width: a(c.scrollBox).width()
            };
        return this.checkElements = function() {
            var b, f;
            c.scrollHorizontal ? (b = Math.max(a("html").scrollLeft(), a("body").scrollLeft(), a(window).scrollLeft()), f = b + e.width) : (b = Math.max(a("html").scrollTop(), a("body").scrollTop(), a(window).scrollTop()), f = b + e.height), d.each(function() {
                var d = a(this),
                    g = {},
                    h = {};
                if (d.data("vp-add-class") && (h.classToAdd = d.data("vp-add-class")), d.data("vp-remove-class") && (h.classToRemove = d.data("vp-remove-class")), d.data("vp-add-class-full-view") && (h.classToAddForFullView = d.data("vp-add-class-full-view")), d.data("vp-keep-add-class") && (h.removeClassAfterAnimation = d.data("vp-remove-after-animation")), d.data("vp-offset") && (h.offset = d.data("vp-offset")), d.data("vp-repeat") && (h.repeat = d.data("vp-repeat")), d.data("vp-scrollHorizontal") && (h.scrollHorizontal = d.data("vp-scrollHorizontal")), d.data("vp-invertBottomOffset") && (h.scrollHorizontal = d.data("vp-invertBottomOffset")), a.extend(g, c), a.extend(g, h), !d.data("vp-animated") || g.repeat) {
                    String(g.offset).indexOf("%") > 0 && (g.offset = parseInt(g.offset) / 100 * e.height);
                    var i = g.scrollHorizontal ? d.offset().left : d.offset().top,
                        j = g.scrollHorizontal ? i + d.width() : i + d.height(),
                        k = Math.round(i) + g.offset,
                        l = g.scrollHorizontal ? k + d.width() : k + d.height();
                    g.invertBottomOffset && (l -= 2 * g.offset), k < f && l > b ? (d.removeClass(g.classToRemove), d.addClass(g.classToAdd), g.callbackFunction(d, "add"), j <= f && i >= b ? d.addClass(g.classToAddForFullView) : d.removeClass(g.classToAddForFullView), d.data("vp-animated", !0), g.removeClassAfterAnimation && d.one("webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend", function() {
                        d.removeClass(g.classToAdd)
                    })) : d.hasClass(g.classToAdd) && g.repeat && (d.removeClass(g.classToAdd + " " + g.classToAddForFullView), g.callbackFunction(d, "remove"), d.data("vp-animated", !1))
                }
            })
        }, ("ontouchstart" in window || "onmsgesturechange" in window) && a(document).on("touchmove MSPointerMove pointermove", this.checkElements), a(c.scrollBox).on("load scroll", this.checkElements), a(window).on('resize', function(b) {
            e = {
                height: a(c.scrollBox).height(),
                width: a(c.scrollBox).width()
            }, d.checkElements()
        }), this.checkElements(), this
    }
}(jQuery);