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Filename : parallax.min.js
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/*!
 * parallax.js v1.5.0 (http://pixelcog.github.io/parallax.js/)
 * @copyright 2016 PixelCog, Inc.
 * @license MIT (https://github.com/pixelcog/parallax.js/blob/master/LICENSE)
 */
!(function (t, i, e, s) {
    function o(i, e) {
        var h = this;
        "object" == typeof e &&
            (delete e.refresh, delete e.render, t.extend(this, e)),
            (this.$element = t(i)),
            !this.imageSrc &&
                this.$element.is("img") &&
                (this.imageSrc = this.$element.attr("src"));
        var r = (this.position + "").toLowerCase().match(/\S+/g) || [];
        if (
            (r.length < 1 && r.push("center"),
            1 == r.length && r.push(r[0]),
            ("top" != r[0] &&
                "bottom" != r[0] &&
                "left" != r[1] &&
                "right" != r[1]) ||
                (r = [r[1], r[0]]),
            this.positionX !== s && (r[0] = this.positionX.toLowerCase()),
            this.positionY !== s && (r[1] = this.positionY.toLowerCase()),
            (h.positionX = r[0]),
            (h.positionY = r[1]),
            "left" != this.positionX &&
                "right" != this.positionX &&
                (isNaN(parseInt(this.positionX))
                    ? (this.positionX = "center")
                    : (this.positionX = parseInt(this.positionX))),
            "top" != this.positionY &&
                "bottom" != this.positionY &&
                (isNaN(parseInt(this.positionY))
                    ? (this.positionY = "center")
                    : (this.positionY = parseInt(this.positionY))),
            (this.position =
                this.positionX +
                (isNaN(this.positionX) ? "" : "px") +
                " " +
                this.positionY +
                (isNaN(this.positionY) ? "" : "px")),
            navigator.userAgent.match(/(iPod|iPhone|iPad)/))
        )
            return (
                this.imageSrc &&
                    this.iosFix &&
                    !this.$element.is("img") &&
                    this.$element.css({
                        backgroundImage: "url(" + this.imageSrc + ")",
                        backgroundSize: "cover",
                        backgroundPosition: this.position,
                    }),
                this
            );
        if (navigator.userAgent.match(/(Android)/))
            return (
                this.imageSrc &&
                    this.androidFix &&
                    !this.$element.is("img") &&
                    this.$element.css({
                        backgroundImage: "url(" + this.imageSrc + ")",
                        backgroundSize: "cover",
                        backgroundPosition: this.position,
                    }),
                this
            );
        this.$mirror = t("<div />").prependTo(this.mirrorContainer);
        var a = this.$element.find(">.parallax-slider"),
            n = !1;
        0 == a.length
            ? (this.$slider = t("<img />").prependTo(this.$mirror))
            : ((this.$slider = a.prependTo(this.$mirror)), (n = !0)),
            this.$mirror
                .addClass("parallax-mirror")
                .css({
                    visibility: "hidden",
                    zIndex: this.zIndex,
                    position: "fixed",
                    top: 0,
                    left: 0,
                    overflow: "hidden",
                }),
            this.$slider.addClass("parallax-slider").one("load", function () {
                (h.naturalHeight && h.naturalWidth) ||
                    ((h.naturalHeight = this.naturalHeight || this.height || 1),
                    (h.naturalWidth = this.naturalWidth || this.width || 1)),
                    (h.aspectRatio = h.naturalWidth / h.naturalHeight),
                    o.isSetup || o.setup(),
                    o.sliders.push(h),
                    (o.isFresh = !1),
                    o.requestRender();
            }),
            n || (this.$slider[0].src = this.imageSrc),
            ((this.naturalHeight && this.naturalWidth) ||
                this.$slider[0].complete ||
                a.length > 0) &&
                this.$slider.trigger("load");
    }
    !(function () {
        for (
            var t = 0, e = ["ms", "moz", "webkit", "o"], s = 0;
            s < e.length && !i.requestAnimationFrame;
            ++s
        )
            (i.requestAnimationFrame = i[e[s] + "RequestAnimationFrame"]),
                (i.cancelAnimationFrame =
                    i[e[s] + "CancelAnimationFrame"] ||
                    i[e[s] + "CancelRequestAnimationFrame"]);
        i.requestAnimationFrame ||
            (i.requestAnimationFrame = function (e) {
                var s = new Date().getTime(),
                    o = Math.max(0, 16 - (s - t)),
                    h = i.setTimeout(function () {
                        e(s + o);
                    }, o);
                return (t = s + o), h;
            }),
            i.cancelAnimationFrame ||
                (i.cancelAnimationFrame = function (t) {
                    clearTimeout(t);
                });
    })(),
        t.extend(o.prototype, {
            speed: 0.2,
            bleed: 0,
            zIndex: -100,
            iosFix: !0,
            androidFix: !0,
            position: "center",
            overScrollFix: !1,
            mirrorContainer: "body",
            refresh: function () {
                (this.boxWidth = this.$element.outerWidth()),
                    (this.boxHeight =
                        this.$element.outerHeight() + 2 * this.bleed),
                    (this.boxOffsetTop =
                        this.$element.offset().top - this.bleed),
                    (this.boxOffsetLeft = this.$element.offset().left),
                    (this.boxOffsetBottom = this.boxOffsetTop + this.boxHeight);
                var t,
                    i = o.winHeight,
                    e = o.docHeight,
                    s = Math.min(this.boxOffsetTop, e - i),
                    h = Math.max(this.boxOffsetTop + this.boxHeight - i, 0),
                    r = (this.boxHeight + (s - h) * (1 - this.speed)) | 0,
                    a = ((this.boxOffsetTop - s) * (1 - this.speed)) | 0;
                r * this.aspectRatio >= this.boxWidth
                    ? ((this.imageWidth = (r * this.aspectRatio) | 0),
                      (this.imageHeight = r),
                      (this.offsetBaseTop = a),
                      (t = this.imageWidth - this.boxWidth),
                      "left" == this.positionX
                          ? (this.offsetLeft = 0)
                          : "right" == this.positionX
                          ? (this.offsetLeft = -t)
                          : isNaN(this.positionX)
                          ? (this.offsetLeft = (-t / 2) | 0)
                          : (this.offsetLeft = Math.max(this.positionX, -t)))
                    : ((this.imageWidth = this.boxWidth),
                      (this.imageHeight =
                          (this.boxWidth / this.aspectRatio) | 0),
                      (this.offsetLeft = 0),
                      (t = this.imageHeight - r),
                      "top" == this.positionY
                          ? (this.offsetBaseTop = a)
                          : "bottom" == this.positionY
                          ? (this.offsetBaseTop = a - t)
                          : isNaN(this.positionY)
                          ? (this.offsetBaseTop = (a - t / 2) | 0)
                          : (this.offsetBaseTop =
                                a + Math.max(this.positionY, -t)));
            },
            render: function () {
                var t = o.scrollTop,
                    i = o.scrollLeft,
                    e = this.overScrollFix ? o.overScroll : 0,
                    s = t + o.winHeight;
                this.boxOffsetBottom > t && this.boxOffsetTop <= s
                    ? ((this.visibility = "visible"),
                      (this.mirrorTop = this.boxOffsetTop - t),
                      (this.mirrorLeft = this.boxOffsetLeft - i),
                      (this.offsetTop =
                          this.offsetBaseTop -
                          this.mirrorTop * (1 - this.speed)))
                    : (this.visibility = "hidden"),
                    this.$mirror.css({
                        transform:
                            "translate3d(" +
                            this.mirrorLeft +
                            "px, " +
                            (this.mirrorTop - e) +
                            "px, 0px)",
                        visibility: this.visibility,
                        height: this.boxHeight,
                        width: this.boxWidth,
                    }),
                    this.$slider.css({
                        transform:
                            "translate3d(" +
                            this.offsetLeft +
                            "px, " +
                            this.offsetTop +
                            "px, 0px)",
                        position: "absolute",
                        height: this.imageHeight,
                        width: this.imageWidth,
                        maxWidth: "none",
                    });
            },
        }),
        t.extend(o, {
            scrollTop: 0,
            scrollLeft: 0,
            winHeight: 0,
            winWidth: 0,
            docHeight: 1 << 30,
            docWidth: 1 << 30,
            sliders: [],
            isReady: !1,
            isFresh: !1,
            isBusy: !1,
            setup: function () {
                function s() {
                    if (p == i.pageYOffset)
                        return i.requestAnimationFrame(s), !1;
                    (p = i.pageYOffset), h.render(), i.requestAnimationFrame(s);
                }
                if (!this.isReady) {
                    var h = this,
                        r = t(e),
                        a = t(i),
                        n = function () {
                            (o.winHeight = a.height()),
                                (o.winWidth = a.width()),
                                (o.docHeight = r.height()),
                                (o.docWidth = r.width());
                        },
                        l = function () {
                            var t = a.scrollTop(),
                                i = o.docHeight - o.winHeight,
                                e = o.docWidth - o.winWidth;
                            (o.scrollTop = Math.max(0, Math.min(i, t))),
                                (o.scrollLeft = Math.max(
                                    0,
                                    Math.min(e, a.scrollLeft())
                                )),
                                (o.overScroll = Math.max(
                                    t - i,
                                    Math.min(t, 0)
                                ));
                        };
                    a
                        .on("resize.px.parallax load.px.parallax", function () {
                            n(),
                                h.refresh(),
                                (o.isFresh = !1),
                                o.requestRender();
                        })
                        .on("scroll.px.parallax load.px.parallax", function () {
                            l(), o.requestRender();
                        }),
                        n(),
                        l(),
                        (this.isReady = !0);
                    var p = -1;
                    s();
                }
            },
            configure: function (i) {
                "object" == typeof i &&
                    (delete i.refresh,
                    delete i.render,
                    t.extend(this.prototype, i));
            },
            refresh: function () {
                t.each(this.sliders, function () {
                    this.refresh();
                }),
                    (this.isFresh = !0);
            },
            render: function () {
                this.isFresh || this.refresh(),
                    t.each(this.sliders, function () {
                        this.render();
                    });
            },
            requestRender: function () {
                var t = this;
                t.render(), (t.isBusy = !1);
            },
            destroy: function (e) {
                var s,
                    h = t(e).data("px.parallax");
                for (h.$mirror.remove(), s = 0; s < this.sliders.length; s += 1)
                    this.sliders[s] == h && this.sliders.splice(s, 1);
                t(e).data("px.parallax", !1),
                    0 === this.sliders.length &&
                        (t(i).off(
                            "scroll.px.parallax resize.px.parallax load.px.parallax"
                        ),
                        (this.isReady = !1),
                        (o.isSetup = !1));
            },
        });
    var h = t.fn.parallax;
    (t.fn.parallax = function (s) {
        return this.each(function () {
            var h = t(this),
                r = "object" == typeof s && s;
            this == i || this == e || h.is("body")
                ? o.configure(r)
                : h.data("px.parallax")
                ? "object" == typeof s && t.extend(h.data("px.parallax"), r)
                : ((r = t.extend({}, h.data(), r)),
                  h.data("px.parallax", new o(this, r))),
                "string" == typeof s &&
                    ("destroy" == s ? o.destroy(this) : o[s]());
        });
    }),
        (t.fn.parallax.Constructor = o),
        (t.fn.parallax.noConflict = function () {
            return (t.fn.parallax = h), this;
        }),
        t(function () {
            t('[data-parallax="scroll"]').parallax();
        });
})(jQuery, window, document);