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Filename : lazysize.min.js
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/*! lazysizes - v5.3.2 */

!(function (e) {
  var t = (function (u, D, f) {
    "use strict";
    var k, H;
    if (
      ((function () {
        var e;
        var t = {
          lazyClass: "lazyload",
          loadedClass: "lazyloaded",
          loadingClass: "lazyloading",
          preloadClass: "lazypreload",
          errorClass: "lazyerror",
          autosizesClass: "lazyautosizes",
          fastLoadedClass: "ls-is-cached",
          iframeLoadMode: 0,
          srcAttr: "data-src",
          srcsetAttr: "data-srcset",
          sizesAttr: "data-sizes",
          minSize: 40,
          customMedia: {},
          init: true,
          expFactor: 1.5,
          hFac: 0.8,
          loadMode: 2,
          loadHidden: true,
          ricTimeout: 0,
          throttleDelay: 125,
        };
        H = u.lazySizesConfig || u.lazysizesConfig || {};
        for (e in t) {
          if (!(e in H)) {
            H[e] = t[e];
          }
        }
      })(),
      !D || !D.getElementsByClassName)
    ) {
      return { init: function () {}, cfg: H, noSupport: true };
    }
    var O = D.documentElement,
      i = u.HTMLPictureElement,
      P = "addEventListener",
      $ = "getAttribute",
      q = u[P].bind(u),
      I = u.setTimeout,
      U = u.requestAnimationFrame || I,
      o = u.requestIdleCallback,
      j = /^picture$/i,
      r = ["load", "error", "lazyincluded", "_lazyloaded"],
      a = {},
      G = Array.prototype.forEach,
      J = function (e, t) {
        if (!a[t]) {
          a[t] = new RegExp("(\\s|^)" + t + "(\\s|$)");
        }
        return a[t].test(e[$]("class") || "") && a[t];
      },
      K = function (e, t) {
        if (!J(e, t)) {
          e.setAttribute("class", (e[$]("class") || "").trim() + " " + t);
        }
      },
      Q = function (e, t) {
        var a;
        if ((a = J(e, t))) {
          e.setAttribute("class", (e[$]("class") || "").replace(a, " "));
        }
      },
      V = function (t, a, e) {
        var i = e ? P : "removeEventListener";
        if (e) {
          V(t, a);
        }
        r.forEach(function (e) {
          t[i](e, a);
        });
      },
      X = function (e, t, a, i, r) {
        var n = D.createEvent("Event");
        if (!a) {
          a = {};
        }
        a.instance = k;
        n.initEvent(t, !i, !r);
        n.detail = a;
        e.dispatchEvent(n);
        return n;
      },
      Y = function (e, t) {
        var a;
        if (!i && (a = u.picturefill || H.pf)) {
          if (t && t.src && !e[$]("srcset")) {
            e.setAttribute("srcset", t.src);
          }
          a({ reevaluate: true, elements: [e] });
        } else if (t && t.src) {
          e.src = t.src;
        }
      },
      Z = function (e, t) {
        return (getComputedStyle(e, null) || {})[t];
      },
      s = function (e, t, a) {
        a = a || e.offsetWidth;
        while (a < H.minSize && t && !e._lazysizesWidth) {
          a = t.offsetWidth;
          t = t.parentNode;
        }
        return a;
      },
      ee = (function () {
        var a, i;
        var t = [];
        var r = [];
        var n = t;
        var s = function () {
          var e = n;
          n = t.length ? r : t;
          a = true;
          i = false;
          while (e.length) {
            e.shift()();
          }
          a = false;
        };
        var e = function (e, t) {
          if (a && !t) {
            e.apply(this, arguments);
          } else {
            n.push(e);
            if (!i) {
              i = true;
              (D.hidden ? I : U)(s);
            }
          }
        };
        e._lsFlush = s;
        return e;
      })(),
      te = function (a, e) {
        return e
          ? function () {
              ee(a);
            }
          : function () {
              var e = this;
              var t = arguments;
              ee(function () {
                a.apply(e, t);
              });
            };
      },
      ae = function (e) {
        var a;
        var i = 0;
        var r = H.throttleDelay;
        var n = H.ricTimeout;
        var t = function () {
          a = false;
          i = f.now();
          e();
        };
        var s =
          o && n > 49
            ? function () {
                o(t, { timeout: n });
                if (n !== H.ricTimeout) {
                  n = H.ricTimeout;
                }
              }
            : te(function () {
                I(t);
              }, true);
        return function (e) {
          var t;
          if ((e = e === true)) {
            n = 33;
          }
          if (a) {
            return;
          }
          a = true;
          t = r - (f.now() - i);
          if (t < 0) {
            t = 0;
          }
          if (e || t < 9) {
            s();
          } else {
            I(s, t);
          }
        };
      },
      ie = function (e) {
        var t, a;
        var i = 99;
        var r = function () {
          t = null;
          e();
        };
        var n = function () {
          var e = f.now() - a;
          if (e < i) {
            I(n, i - e);
          } else {
            (o || r)(r);
          }
        };
        return function () {
          a = f.now();
          if (!t) {
            t = I(n, i);
          }
        };
      },
      e = (function () {
        var v, m, c, h, e;
        var y, z, g, p, C, b, A;
        var n = /^img$/i;
        var d = /^iframe$/i;
        var E = "onscroll" in u && !/(gle|ing)bot/.test(navigator.userAgent);
        var _ = 0;
        var w = 0;
        var M = 0;
        var N = -1;
        var L = function (e) {
          M--;
          if (!e || M < 0 || !e.target) {
            M = 0;
          }
        };
        var x = function (e) {
          if (A == null) {
            A = Z(D.body, "visibility") == "hidden";
          }
          return (
            A ||
            !(
              Z(e.parentNode, "visibility") == "hidden" &&
              Z(e, "visibility") == "hidden"
            )
          );
        };
        var W = function (e, t) {
          var a;
          var i = e;
          var r = x(e);
          g -= t;
          b += t;
          p -= t;
          C += t;
          while (r && (i = i.offsetParent) && i != D.body && i != O) {
            r = (Z(i, "opacity") || 1) > 0;
            if (r && Z(i, "overflow") != "visible") {
              a = i.getBoundingClientRect();
              r =
                C > a.left && p < a.right && b > a.top - 1 && g < a.bottom + 1;
            }
          }
          return r;
        };
        var t = function () {
          var e, t, a, i, r, n, s, o, l, u, f, c;
          var d = k.elements;
          if ((h = H.loadMode) && M < 8 && (e = d.length)) {
            t = 0;
            N++;
            for (; t < e; t++) {
              if (!d[t] || d[t]._lazyRace) {
                continue;
              }
              if (!E || (k.prematureUnveil && k.prematureUnveil(d[t]))) {
                R(d[t]);
                continue;
              }
              if (!(o = d[t][$]("data-expand")) || !(n = o * 1)) {
                n = w;
              }
              if (!u) {
                u =
                  !H.expand || H.expand < 1
                    ? O.clientHeight > 500 && O.clientWidth > 500
                      ? 500
                      : 370
                    : H.expand;
                k._defEx = u;
                f = u * H.expFactor;
                c = H.hFac;
                A = null;
                if (w < f && M < 1 && N > 2 && h > 2 && !D.hidden) {
                  w = f;
                  N = 0;
                } else if (h > 1 && N > 1 && M < 6) {
                  w = u;
                } else {
                  w = _;
                }
              }
              if (l !== n) {
                y = innerWidth + n * c;
                z = innerHeight + n;
                s = n * -1;
                l = n;
              }
              a = d[t].getBoundingClientRect();
              if (
                (b = a.bottom) >= s &&
                (g = a.top) <= z &&
                (C = a.right) >= s * c &&
                (p = a.left) <= y &&
                (b || C || p || g) &&
                (H.loadHidden || x(d[t])) &&
                ((m && M < 3 && !o && (h < 3 || N < 4)) || W(d[t], n))
              ) {
                R(d[t]);
                r = true;
                if (M > 9) {
                  break;
                }
              } else if (
                !r &&
                m &&
                !i &&
                M < 4 &&
                N < 4 &&
                h > 2 &&
                (v[0] || H.preloadAfterLoad) &&
                (v[0] ||
                  (!o && (b || C || p || g || d[t][$](H.sizesAttr) != "auto")))
              ) {
                i = v[0] || d[t];
              }
            }
            if (i && !r) {
              R(i);
            }
          }
        };
        var a = ae(t);
        var S = function (e) {
          var t = e.target;
          if (t._lazyCache) {
            delete t._lazyCache;
            return;
          }
          L(e);
          K(t, H.loadedClass);
          Q(t, H.loadingClass);
          V(t, B);
          X(t, "lazyloaded");
        };
        var i = te(S);
        var B = function (e) {
          i({ target: e.target });
        };
        var T = function (e, t) {
          var a = e.getAttribute("data-load-mode") || H.iframeLoadMode;
          if (a == 0) {
            e.contentWindow.location.replace(t);
          } else if (a == 1) {
            e.src = t;
          }
        };
        var F = function (e) {
          var t;
          var a = e[$](H.srcsetAttr);
          if ((t = H.customMedia[e[$]("data-media") || e[$]("media")])) {
            e.setAttribute("media", t);
          }
          if (a) {
            e.setAttribute("srcset", a);
          }
        };
        var s = te(function (t, e, a, i, r) {
          var n, s, o, l, u, f;
          if (!(u = X(t, "lazybeforeunveil", e)).defaultPrevented) {
            if (i) {
              if (a) {
                K(t, H.autosizesClass);
              } else {
                t.setAttribute("sizes", i);
              }
            }
            s = t[$](H.srcsetAttr);
            n = t[$](H.srcAttr);
            if (r) {
              o = t.parentNode;
              l = o && j.test(o.nodeName || "");
            }
            f = e.firesLoad || ("src" in t && (s || n || l));
            u = { target: t };
            K(t, H.loadingClass);
            if (f) {
              clearTimeout(c);
              c = I(L, 2500);
              V(t, B, true);
            }
            if (l) {
              G.call(o.getElementsByTagName("source"), F);
            }
            if (s) {
              t.setAttribute("srcset", s);
            } else if (n && !l) {
              if (d.test(t.nodeName)) {
                T(t, n);
              } else {
                t.src = n;
              }
            }
            if (r && (s || l)) {
              Y(t, { src: n });
            }
          }
          if (t._lazyRace) {
            delete t._lazyRace;
          }
          Q(t, H.lazyClass);
          ee(function () {
            var e = t.complete && t.naturalWidth > 1;
            if (!f || e) {
              if (e) {
                K(t, H.fastLoadedClass);
              }
              S(u);
              t._lazyCache = true;
              I(function () {
                if ("_lazyCache" in t) {
                  delete t._lazyCache;
                }
              }, 9);
            }
            if (t.loading == "lazy") {
              M--;
            }
          }, true);
        });
        var R = function (e) {
          if (e._lazyRace) {
            return;
          }
          var t;
          var a = n.test(e.nodeName);
          var i = a && (e[$](H.sizesAttr) || e[$]("sizes"));
          var r = i == "auto";
          if (
            (r || !m) &&
            a &&
            (e[$]("src") || e.srcset) &&
            !e.complete &&
            !J(e, H.errorClass) &&
            J(e, H.lazyClass)
          ) {
            return;
          }
          t = X(e, "lazyunveilread").detail;
          if (r) {
            re.updateElem(e, true, e.offsetWidth);
          }
          e._lazyRace = true;
          M++;
          s(e, t, r, i, a);
        };
        var r = ie(function () {
          H.loadMode = 3;
          a();
        });
        var o = function () {
          if (H.loadMode == 3) {
            H.loadMode = 2;
          }
          r();
        };
        var l = function () {
          if (m) {
            return;
          }
          if (f.now() - e < 999) {
            I(l, 999);
            return;
          }
          m = true;
          H.loadMode = 3;
          a();
          q("scroll", o, true);
        };
        return {
          _: function () {
            e = f.now();
            k.elements = D.getElementsByClassName(H.lazyClass);
            v = D.getElementsByClassName(H.lazyClass + " " + H.preloadClass);
            q("scroll", a, true);
            q("resize", a, true);
            q("pageshow", function (e) {
              if (e.persisted) {
                var t = D.querySelectorAll("." + H.loadingClass);
                if (t.length && t.forEach) {
                  U(function () {
                    t.forEach(function (e) {
                      if (e.complete) {
                        R(e);
                      }
                    });
                  });
                }
              }
            });
            if (u.MutationObserver) {
              new MutationObserver(a).observe(O, {
                childList: true,
                subtree: true,
                attributes: true,
              });
            } else {
              O[P]("DOMNodeInserted", a, true);
              O[P]("DOMAttrModified", a, true);
              setInterval(a, 999);
            }
            q("hashchange", a, true);
            [
              "focus",
              "mouseover",
              "click",
              "load",
              "transitionend",
              "animationend",
            ].forEach(function (e) {
              D[P](e, a, true);
            });
            if (/d$|^c/.test(D.readyState)) {
              l();
            } else {
              q("load", l);
              D[P]("DOMContentLoaded", a);
              I(l, 2e4);
            }
            if (k.elements.length) {
              t();
              ee._lsFlush();
            } else {
              a();
            }
          },
          checkElems: a,
          unveil: R,
          _aLSL: o,
        };
      })(),
      re = (function () {
        var a;
        var n = te(function (e, t, a, i) {
          var r, n, s;
          e._lazysizesWidth = i;
          i += "px";
          e.setAttribute("sizes", i);
          if (j.test(t.nodeName || "")) {
            r = t.getElementsByTagName("source");
            for (n = 0, s = r.length; n < s; n++) {
              r[n].setAttribute("sizes", i);
            }
          }
          if (!a.detail.dataAttr) {
            Y(e, a.detail);
          }
        });
        var i = function (e, t, a) {
          var i;
          var r = e.parentNode;
          if (r) {
            a = s(e, r, a);
            i = X(e, "lazybeforesizes", { width: a, dataAttr: !!t });
            if (!i.defaultPrevented) {
              a = i.detail.width;
              if (a && a !== e._lazysizesWidth) {
                n(e, r, i, a);
              }
            }
          }
        };
        var e = function () {
          var e;
          var t = a.length;
          if (t) {
            e = 0;
            for (; e < t; e++) {
              i(a[e]);
            }
          }
        };
        var t = ie(e);
        return {
          _: function () {
            a = D.getElementsByClassName(H.autosizesClass);
            q("resize", t);
          },
          checkElems: t,
          updateElem: i,
        };
      })(),
      t = function () {
        if (!t.i && D.getElementsByClassName) {
          t.i = true;
          re._();
          e._();
        }
      };
    return (
      I(function () {
        H.init && t();
      }),
      (k = {
        cfg: H,
        autoSizer: re,
        loader: e,
        init: t,
        uP: Y,
        aC: K,
        rC: Q,
        hC: J,
        fire: X,
        gW: s,
        rAF: ee,
      })
    );
  })(e, e.document, Date);
  (e.lazySizes = t),
    "object" == typeof module && module.exports && (module.exports = t);
})("undefined" != typeof window ? window : {});