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n="".concat(this.nestingPrefix,"(.+?)").concat(this.nestingSuffix);this.nestingRegexp=new RegExp(n,"g")}},{key:"interpolate",value:function(e,t,n,o){var i,r,a,s=this,u=this.options&&this.options.interpolation&&this.options.interpolation.defaultVariables||{};function l(e){return e.replace(/\$/g,"$$$$")}var c=function(e){if(e.indexOf(s.formatSeparator)<0)return x(t,u,e);var o=e.split(s.formatSeparator),i=o.shift().trim(),r=o.join(s.formatSeparator).trim();return s.format(x(t,u,i),r,n)};this.resetRegExp();var f=o&&o.missingInterpolationHandler||this.options.missingInterpolationHandler;for(a=0;i=this.regexpUnescape.exec(e);){if(void 0===(r=c(i[1].trim())))if("function"==typeof f){var p=f(e,i,o);r="string"==typeof p?p:""}else this.logger.warn("missed to pass in variable ".concat(i[1]," for interpolating ").concat(e)),r="";else"string"==typeof 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a={};this.queue.forEach(function(n){var o,s,u,l,c,f;o=n.loaded,s=r,l=m(o,[i],Object),c=l.obj,f=l.k,c[f]=c[f]||[],u&&(c[f]=c[f].concat(s)),u||c[f].push(s),function(e,t){for(var n=e.indexOf(t);-1!==n;)e.splice(n,1),n=e.indexOf(t)}(n.pending,e),t&&n.errors.push(t),0!==n.pending.length||n.done||(Object.keys(n.loaded).forEach(function(e){a[e]||(a[e]=[]),n.loaded[e].length&&n.loaded[e].forEach(function(t){a[e].indexOf(t)<0&&a[e].push(t)})}),n.done=!0,n.errors.length?n.callback(n.errors):n.callback())}),this.emit("loaded",a),this.queue=this.queue.filter(function(e){return!e.done})}},{key:"read",value:function(e,t,n){var o=this,i=arguments.length>3&&void 0!==arguments[3]?arguments[3]:0,r=arguments.length>4&&void 0!==arguments[4]?arguments[4]:250,a=arguments.length>5?arguments[5]:void 0;return e.length?this.backend[n](e,t,function(s,u){s&&u&&i<5?setTimeout(function(){o.read.call(o,e,t,n,i+1,2*r,a)},r):a(s,u)}):a(null,{})}},{key:"prepareLoading",value:function(e,t){var n=this,o=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},i=arguments.length>3?arguments[3]:void 0;if(!this.backend)return this.logger.warn("No backend was added via i18next.use. 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0!==arguments[0]?arguments[0]:{},i=arguments.length>1?arguments[1]:void 0;function r(e){return e?"function"==typeof e?new e:e:null}if("function"==typeof n&&(i=n,n={}),this.options=o({},{debug:!1,initImmediate:!0,ns:["translation"],defaultNS:["translation"],fallbackLng:["dev"],fallbackNS:!1,whitelist:!1,nonExplicitWhitelist:!1,load:"all",preload:!1,simplifyPluralSuffix:!0,keySeparator:".",nsSeparator:":",pluralSeparator:"_",contextSeparator:"_",partialBundledLanguages:!1,saveMissing:!1,updateMissing:!1,saveMissingTo:"fallback",saveMissingPlurals:!0,missingKeyHandler:!1,missingInterpolationHandler:!1,postProcess:!1,postProcessPassResolved:!1,returnNull:!0,returnEmptyString:!0,returnObjects:!1,joinArrays:!1,returnedObjectHandler:!1,parseMissingKeyHandler:!1,appendNamespaceToMissingKey:!1,appendNamespaceToCIMode:!1,overloadTranslationOptionHandler:function(e){var n={};if("object"===t(e[1])&&(n=e[1]),"string"==typeof e[1]&&(n.defaultValue=e[1]),"string"==typeof e[2]&&(n.tDescription=e[2]),"object"===t(e[2])||"object"===t(e[3])){var o=e[3]||e[2];Object.keys(o).forEach(function(e){n[e]=o[e]})}return n},interpolation:{escapeValue:!0,format:function(e,t,n){return e},prefix:"{{",suffix:"}}",formatSeparator:",",unescapePrefix:"-",nestingPrefix:"$t(",nestingSuffix:")",maxReplaces:1e3}},this.options,U(n)),this.format=this.options.interpolation.format,i||(i=I),!this.options.isClone){this.modules.logger?h.init(r(this.modules.logger),this.options):h.init(null,this.options);var a=new P(this.options);this.store=new L(this.options.resources,this.options);var s=this.services;s.logger=h,s.resourceStore=this.store,s.languageUtils=a,s.pluralResolver=new F(a,{prepend:this.options.pluralSeparator,compatibilityJSON:this.options.compatibilityJSON,simplifyPluralSuffix:this.options.simplifyPluralSuffix}),s.interpolator=new A(this.options),s.utils={hasLoadedNamespace:this.hasLoadedNamespace.bind(this)},s.backendConnector=new V(r(this.modules.backend),s.resourceStore,s,this.options),s.backendConnector.on("*",function(t){for(var n=arguments.length,o=new Array(n>1?n-1:0),i=1;i<n;i++)o[i-1]=arguments[i];e.emit.apply(e,[t].concat(o))}),this.modules.languageDetector&&(s.languageDetector=r(this.modules.languageDetector),s.languageDetector.init(s,this.options.detection,this.options)),this.modules.i18nFormat&&(s.i18nFormat=r(this.modules.i18nFormat),s.i18nFormat.init&&s.i18nFormat.init(this)),this.translator=new N(this.services,this.options),this.translator.on("*",function(t){for(var n=arguments.length,o=new Array(n>1?n-1:0),i=1;i<n;i++)o[i-1]=arguments[i];e.emit.apply(e,[t].concat(o))}),this.modules.external.forEach(function(t){t.init&&t.init(e)})}["getResource","addResource","addResources","addResourceBundle","removeResourceBundle","hasResourceBundle","getResourceBundle","getDataByLanguage"].forEach(function(t){e[t]=function(){var n;return(n=e.store)[t].apply(n,arguments)}});var u=v(),l=function(){e.changeLanguage(e.options.lng,function(t,n){e.isInitialized=!0,e.logger.log("initialized",e.options),e.emit("initialized",e.options),u.resolve(n),i(t,n)})};return this.options.resources||!this.options.initImmediate?l():setTimeout(l,0),u}},{key:"loadResources",value:function(){var e=this,t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:I;if(!this.options.resources||this.options.partialBundledLanguages){if(this.language&&"cimode"===this.language.toLowerCase())return t();var n=[],o=function(t){t&&e.services.languageUtils.toResolveHierarchy(t).forEach(function(e){n.indexOf(e)<0&&n.push(e)})};if(this.language)o(this.language);else this.services.languageUtils.getFallbackCodes(this.options.fallbackLng).forEach(function(e){return o(e)});this.options.preload&&this.options.preload.forEach(function(e){return o(e)}),this.services.backendConnector.load(n,this.options.ns,t)}else t(null)}},{key:"reloadResources",value:function(e,t,n){var o=v();return e||(e=this.languages),t||(t=this.options.ns),n||(n=I),this.services.backendConnector.reload(e,t,function(e){o.resolve(),n(e)}),o}},{key:"use",value:function(e){return"backend"===e.type&&(this.modules.backend=e),("logger"===e.type||e.log&&e.warn&&e.error)&&(this.modules.logger=e),"languageDetector"===e.type&&(this.modules.languageDetector=e),"i18nFormat"===e.type&&(this.modules.i18nFormat=e),"postProcessor"===e.type&&R.addPostProcessor(e),"3rdParty"===e.type&&this.modules.external.push(e),this}},{key:"changeLanguage",value:function(e,t){var n=this,o=v();this.emit("languageChanging",e);var i=function(e){e&&(n.language=e,n.languages=n.services.languageUtils.toResolveHierarchy(e),n.translator.language||n.translator.changeLanguage(e),n.services.languageDetector&&n.services.languageDetector.cacheUserLanguage(e)),n.loadResources(function(i){!function(e,i){n.translator.changeLanguage(i),i&&(n.emit("languageChanged",i),n.logger.log("languageChanged",i)),o.resolve(function(){return 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this.translator&&(e=this.translator).exists.apply(e,arguments)}},{key:"setDefaultNamespace",value:function(e){this.options.defaultNS=e}},{key:"hasLoadedNamespace",value:function(e){var t=this;if(!this.isInitialized)return this.logger.warn("hasLoadedNamespace: i18next was not initialized",this.languages),!1;if(!this.languages||!this.languages.length)return this.logger.warn("hasLoadedNamespace: i18n.languages were undefined or empty",this.languages),!1;var n=this.languages[0],o=!!this.options&&this.options.fallbackLng,i=this.languages[this.languages.length-1];if("cimode"===n.toLowerCase())return!0;var r=function(e,n){var o=t.services.backendConnector.state["".concat(e,"|").concat(n)];return-1===o||2===o};return!!this.hasResourceBundle(n,e)||(!this.services.backendConnector.backend||!(!r(n,e)||o&&!r(i,e)))}},{key:"loadNamespaces",value:function(e,t){var n=this,o=v();return this.options.ns?("string"==typeof 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/*********/
(function(){

    // Copyright (c) 2005  Tom Wu
    // All Rights Reserved.
    // See "LICENSE" for details.

    // Basic JavaScript BN library - subset useful for RSA encryption.

    // Bits per digit
    var dbits;

    // JavaScript engine analysis
    var canary = 0xdeadbeefcafe;
    var j_lm = ((canary&0xffffff)==0xefcafe);

    // (public) Constructor
    function BigInteger(a,b,c) {
      if(a != null)
        if("number" == typeof a) this.fromNumber(a,b,c);
        else if(b == null && "string" != typeof a) this.fromString(a,256);
        else this.fromString(a,b);
    }

    // return new, unset BigInteger
    function nbi() { return new BigInteger(null); }

    // am: Compute w_j += (x*this_i), propagate carries,
    // c is initial carry, returns final carry.
    // c < 3*dvalue, x < 2*dvalue, this_i < dvalue
    // We need to select the fastest one that works in this environment.

    // am1: use a single mult and divide to get the high bits,
    // max digit bits should be 26 because
    // max internal value = 2*dvalue^2-2*dvalue (< 2^53)
    function am1(i,x,w,j,c,n) {
      while(--n >= 0) {
        var v = x*this[i++]+w[j]+c;
        c = Math.floor(v/0x4000000);
        w[j++] = v&0x3ffffff;
      }
      return c;
    }
    // am2 avoids a big mult-and-extract completely.
    // Max digit bits should be <= 30 because we do bitwise ops
    // on values up to 2*hdvalue^2-hdvalue-1 (< 2^31)
    function am2(i,x,w,j,c,n) {
      var xl = x&0x7fff, xh = x>>15;
      while(--n >= 0) {
        var l = this[i]&0x7fff;
        var h = this[i++]>>15;
        var m = xh*l+h*xl;
        l = xl*l+((m&0x7fff)<<15)+w[j]+(c&0x3fffffff);
        c = (l>>>30)+(m>>>15)+xh*h+(c>>>30);
        w[j++] = l&0x3fffffff;
      }
      return c;
    }
    // Alternately, set max digit bits to 28 since some
    // browsers slow down when dealing with 32-bit numbers.
    function am3(i,x,w,j,c,n) {
      var xl = x&0x3fff, xh = x>>14;
      while(--n >= 0) {
        var l = this[i]&0x3fff;
        var h = this[i++]>>14;
        var m = xh*l+h*xl;
        l = xl*l+((m&0x3fff)<<14)+w[j]+c;
        c = (l>>28)+(m>>14)+xh*h;
        w[j++] = l&0xfffffff;
      }
      return c;
    }
    var inBrowser = typeof navigator !== "undefined";
    if(inBrowser && j_lm && (navigator.appName == "Microsoft Internet Explorer")) {
      BigInteger.prototype.am = am2;
      dbits = 30;
    }
    else if(inBrowser && j_lm && (navigator.appName != "Netscape")) {
      BigInteger.prototype.am = am1;
      dbits = 26;
    }
    else { // Mozilla/Netscape seems to prefer am3
      BigInteger.prototype.am = am3;
      dbits = 28;
    }

    BigInteger.prototype.DB = dbits;
    BigInteger.prototype.DM = ((1<<dbits)-1);
    BigInteger.prototype.DV = (1<<dbits);

    var BI_FP = 52;
    BigInteger.prototype.FV = Math.pow(2,BI_FP);
    BigInteger.prototype.F1 = BI_FP-dbits;
    BigInteger.prototype.F2 = 2*dbits-BI_FP;

    // Digit conversions
    var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz";
    var BI_RC = new Array();
    var rr,vv;
    rr = "0".charCodeAt(0);
    for(vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv;
    rr = "a".charCodeAt(0);
    for(vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv;
    rr = "A".charCodeAt(0);
    for(vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv;

    function int2char(n) { return BI_RM.charAt(n); }
    function intAt(s,i) {
      var c = BI_RC[s.charCodeAt(i)];
      return (c==null)?-1:c;
    }

    // (protected) copy this to r
    function bnpCopyTo(r) {
      for(var i = this.t-1; i >= 0; --i) r[i] = this[i];
      r.t = this.t;
      r.s = this.s;
    }

    // (protected) set from integer value x, -DV <= x < DV
    function bnpFromInt(x) {
      this.t = 1;
      this.s = (x<0)?-1:0;
      if(x > 0) this[0] = x;
      else if(x < -1) this[0] = x+this.DV;
      else this.t = 0;
    }

    // return bigint initialized to value
    function nbv(i) { var r = nbi(); r.fromInt(i); return r; }

    // (protected) set from string and radix
    function bnpFromString(s,b) {
      var k;
      if(b == 16) k = 4;
      else if(b == 8) k = 3;
      else if(b == 256) k = 8; // byte array
      else if(b == 2) k = 1;
      else if(b == 32) k = 5;
      else if(b == 4) k = 2;
      else { this.fromRadix(s,b); return; }
      this.t = 0;
      this.s = 0;
      var i = s.length, mi = false, sh = 0;
      while(--i >= 0) {
        var x = (k==8)?s[i]&0xff:intAt(s,i);
        if(x < 0) {
          if(s.charAt(i) == "-") mi = true;
          continue;
        }
        mi = false;
        if(sh == 0)
          this[this.t++] = x;
        else if(sh+k > this.DB) {
          this[this.t-1] |= (x&((1<<(this.DB-sh))-1))<<sh;
          this[this.t++] = (x>>(this.DB-sh));
        }
        else
          this[this.t-1] |= x<<sh;
        sh += k;
        if(sh >= this.DB) sh -= this.DB;
      }
      if(k == 8 && (s[0]&0x80) != 0) {
        this.s = -1;
        if(sh > 0) this[this.t-1] |= ((1<<(this.DB-sh))-1)<<sh;
      }
      this.clamp();
      if(mi) BigInteger.ZERO.subTo(this,this);
    }

    // (protected) clamp off excess high words
    function bnpClamp() {
      var c = this.s&this.DM;
      while(this.t > 0 && this[this.t-1] == c) --this.t;
    }

    // (public) return string representation in given radix
    function bnToString(b) {
      if(this.s < 0) return "-"+this.negate().toString(b);
      var k;
      if(b == 16) k = 4;
      else if(b == 8) k = 3;
      else if(b == 2) k = 1;
      else if(b == 32) k = 5;
      else if(b == 4) k = 2;
      else return this.toRadix(b);
      var km = (1<<k)-1, d, m = false, r = "", i = this.t;
      var p = this.DB-(i*this.DB)%k;
      if(i-- > 0) {
        if(p < this.DB && (d = this[i]>>p) > 0) { m = true; r = int2char(d); }
        while(i >= 0) {
          if(p < k) {
            d = (this[i]&((1<<p)-1))<<(k-p);
            d |= this[--i]>>(p+=this.DB-k);
          }
          else {
            d = (this[i]>>(p-=k))&km;
            if(p <= 0) { p += this.DB; --i; }
          }
          if(d > 0) m = true;
          if(m) r += int2char(d);
        }
      }
      return m?r:"0";
    }

    // (public) -this
    function bnNegate() { var r = nbi(); BigInteger.ZERO.subTo(this,r); return r; }

    // (public) |this|
    function bnAbs() { return (this.s<0)?this.negate():this; }

    // (public) return + if this > a, - if this < a, 0 if equal
    function bnCompareTo(a) {
      var r = this.s-a.s;
      if(r != 0) return r;
      var i = this.t;
      r = i-a.t;
      if(r != 0) return (this.s<0)?-r:r;
      while(--i >= 0) if((r=this[i]-a[i]) != 0) return r;
      return 0;
    }

    // returns bit length of the integer x
    function nbits(x) {
      var r = 1, t;
      if((t=x>>>16) != 0) { x = t; r += 16; }
      if((t=x>>8) != 0) { x = t; r += 8; }
      if((t=x>>4) != 0) { x = t; r += 4; }
      if((t=x>>2) != 0) { x = t; r += 2; }
      if((t=x>>1) != 0) { x = t; r += 1; }
      return r;
    }

    // (public) return the number of bits in "this"
    function bnBitLength() {
      if(this.t <= 0) return 0;
      return this.DB*(this.t-1)+nbits(this[this.t-1]^(this.s&this.DM));
    }

    // (protected) r = this << n*DB
    function bnpDLShiftTo(n,r) {
      var i;
      for(i = this.t-1; i >= 0; --i) r[i+n] = this[i];
      for(i = n-1; i >= 0; --i) r[i] = 0;
      r.t = this.t+n;
      r.s = this.s;
    }

    // (protected) r = this >> n*DB
    function bnpDRShiftTo(n,r) {
      for(var i = n; i < this.t; ++i) r[i-n] = this[i];
      r.t = Math.max(this.t-n,0);
      r.s = this.s;
    }

    // (protected) r = this << n
    function bnpLShiftTo(n,r) {
      var bs = n%this.DB;
      var cbs = this.DB-bs;
      var bm = (1<<cbs)-1;
      var ds = Math.floor(n/this.DB), c = (this.s<<bs)&this.DM, i;
      for(i = this.t-1; i >= 0; --i) {
        r[i+ds+1] = (this[i]>>cbs)|c;
        c = (this[i]&bm)<<bs;
      }
      for(i = ds-1; i >= 0; --i) r[i] = 0;
      r[ds] = c;
      r.t = this.t+ds+1;
      r.s = this.s;
      r.clamp();
    }

    // (protected) r = this >> n
    function bnpRShiftTo(n,r) {
      r.s = this.s;
      var ds = Math.floor(n/this.DB);
      if(ds >= this.t) { r.t = 0; return; }
      var bs = n%this.DB;
      var cbs = this.DB-bs;
      var bm = (1<<bs)-1;
      r[0] = this[ds]>>bs;
      for(var i = ds+1; i < this.t; ++i) {
        r[i-ds-1] |= (this[i]&bm)<<cbs;
        r[i-ds] = this[i]>>bs;
      }
      if(bs > 0) r[this.t-ds-1] |= (this.s&bm)<<cbs;
      r.t = this.t-ds;
      r.clamp();
    }

    // (protected) r = this - a
    function bnpSubTo(a,r) {
      var i = 0, c = 0, m = Math.min(a.t,this.t);
      while(i < m) {
        c += this[i]-a[i];
        r[i++] = c&this.DM;
        c >>= this.DB;
      }
      if(a.t < this.t) {
        c -= a.s;
        while(i < this.t) {
          c += this[i];
          r[i++] = c&this.DM;
          c >>= this.DB;
        }
        c += this.s;
      }
      else {
        c += this.s;
        while(i < a.t) {
          c -= a[i];
          r[i++] = c&this.DM;
          c >>= this.DB;
        }
        c -= a.s;
      }
      r.s = (c<0)?-1:0;
      if(c < -1) r[i++] = this.DV+c;
      else if(c > 0) r[i++] = c;
      r.t = i;
      r.clamp();
    }

    // (protected) r = this * a, r != this,a (HAC 14.12)
    // "this" should be the larger one if appropriate.
    function bnpMultiplyTo(a,r) {
      var x = this.abs(), y = a.abs();
      var i = x.t;
      r.t = i+y.t;
      while(--i >= 0) r[i] = 0;
      for(i = 0; i < y.t; ++i) r[i+x.t] = x.am(0,y[i],r,i,0,x.t);
      r.s = 0;
      r.clamp();
      if(this.s != a.s) BigInteger.ZERO.subTo(r,r);
    }

    // (protected) r = this^2, r != this (HAC 14.16)
    function bnpSquareTo(r) {
      var x = this.abs();
      var i = r.t = 2*x.t;
      while(--i >= 0) r[i] = 0;
      for(i = 0; i < x.t-1; ++i) {
        var c = x.am(i,x[i],r,2*i,0,1);
        if((r[i+x.t]+=x.am(i+1,2*x[i],r,2*i+1,c,x.t-i-1)) >= x.DV) {
          r[i+x.t] -= x.DV;
          r[i+x.t+1] = 1;
        }
      }
      if(r.t > 0) r[r.t-1] += x.am(i,x[i],r,2*i,0,1);
      r.s = 0;
      r.clamp();
    }

    // (protected) divide this by m, quotient and remainder to q, r (HAC 14.20)
    // r != q, this != m.  q or r may be null.
    function bnpDivRemTo(m,q,r) {
      var pm = m.abs();
      if(pm.t <= 0) return;
      var pt = this.abs();
      if(pt.t < pm.t) {
        if(q != null) q.fromInt(0);
        if(r != null) this.copyTo(r);
        return;
      }
      if(r == null) r = nbi();
      var y = nbi(), ts = this.s, ms = m.s;
      var nsh = this.DB-nbits(pm[pm.t-1]);   // normalize modulus
      if(nsh > 0) { pm.lShiftTo(nsh,y); pt.lShiftTo(nsh,r); }
      else { pm.copyTo(y); pt.copyTo(r); }
      var ys = y.t;
      var y0 = y[ys-1];
      if(y0 == 0) return;
      var yt = y0*(1<<this.F1)+((ys>1)?y[ys-2]>>this.F2:0);
      var d1 = this.FV/yt, d2 = (1<<this.F1)/yt, e = 1<<this.F2;
      var i = r.t, j = i-ys, t = (q==null)?nbi():q;
      y.dlShiftTo(j,t);
      if(r.compareTo(t) >= 0) {
        r[r.t++] = 1;
        r.subTo(t,r);
      }
      BigInteger.ONE.dlShiftTo(ys,t);
      t.subTo(y,y);  // "negative" y so we can replace sub with am later
      while(y.t < ys) y[y.t++] = 0;
      while(--j >= 0) {
        // Estimate quotient digit
        var qd = (r[--i]==y0)?this.DM:Math.floor(r[i]*d1+(r[i-1]+e)*d2);
        if((r[i]+=y.am(0,qd,r,j,0,ys)) < qd) {   // Try it out
          y.dlShiftTo(j,t);
          r.subTo(t,r);
          while(r[i] < --qd) r.subTo(t,r);
        }
      }
      if(q != null) {
        r.drShiftTo(ys,q);
        if(ts != ms) BigInteger.ZERO.subTo(q,q);
      }
      r.t = ys;
      r.clamp();
      if(nsh > 0) r.rShiftTo(nsh,r); // Denormalize remainder
      if(ts < 0) BigInteger.ZERO.subTo(r,r);
    }

    // (public) this mod a
    function bnMod(a) {
      var r = nbi();
      this.abs().divRemTo(a,null,r);
      if(this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r,r);
      return r;
    }

    // Modular reduction using "classic" algorithm
    function Classic(m) { this.m = m; }
    function cConvert(x) {
      if(x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m);
      else return x;
    }
    function cRevert(x) { return x; }
    function cReduce(x) { x.divRemTo(this.m,null,x); }
    function cMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
    function cSqrTo(x,r) { x.squareTo(r); this.reduce(r); }

    Classic.prototype.convert = cConvert;
    Classic.prototype.revert = cRevert;
    Classic.prototype.reduce = cReduce;
    Classic.prototype.mulTo = cMulTo;
    Classic.prototype.sqrTo = cSqrTo;

    // (protected) return "-1/this % 2^DB"; useful for Mont. reduction
    // justification:
    //         xy == 1 (mod m)
    //         xy =  1+km
    //   xy(2-xy) = (1+km)(1-km)
    // x[y(2-xy)] = 1-k^2m^2
    // x[y(2-xy)] == 1 (mod m^2)
    // if y is 1/x mod m, then y(2-xy) is 1/x mod m^2
    // should reduce x and y(2-xy) by m^2 at each step to keep size bounded.
    // JS multiply "overflows" differently from C/C++, so care is needed here.
    function bnpInvDigit() {
      if(this.t < 1) return 0;
      var x = this[0];
      if((x&1) == 0) return 0;
      var y = x&3;       // y == 1/x mod 2^2
      y = (y*(2-(x&0xf)*y))&0xf; // y == 1/x mod 2^4
      y = (y*(2-(x&0xff)*y))&0xff;   // y == 1/x mod 2^8
      y = (y*(2-(((x&0xffff)*y)&0xffff)))&0xffff;    // y == 1/x mod 2^16
      // last step - calculate inverse mod DV directly;
      // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
      y = (y*(2-x*y%this.DV))%this.DV;       // y == 1/x mod 2^dbits
      // we really want the negative inverse, and -DV < y < DV
      return (y>0)?this.DV-y:-y;
    }

    // Montgomery reduction
    function Montgomery(m) {
      this.m = m;
      this.mp = m.invDigit();
      this.mpl = this.mp&0x7fff;
      this.mph = this.mp>>15;
      this.um = (1<<(m.DB-15))-1;
      this.mt2 = 2*m.t;
    }

    // xR mod m
    function montConvert(x) {
      var r = nbi();
      x.abs().dlShiftTo(this.m.t,r);
      r.divRemTo(this.m,null,r);
      if(x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r,r);
      return r;
    }

    // x/R mod m
    function montRevert(x) {
      var r = nbi();
      x.copyTo(r);
      this.reduce(r);
      return r;
    }

    // x = x/R mod m (HAC 14.32)
    function montReduce(x) {
      while(x.t <= this.mt2) // pad x so am has enough room later
        x[x.t++] = 0;
      for(var i = 0; i < this.m.t; ++i) {
        // faster way of calculating u0 = x[i]*mp mod DV
        var j = x[i]&0x7fff;
        var u0 = (j*this.mpl+(((j*this.mph+(x[i]>>15)*this.mpl)&this.um)<<15))&x.DM;
        // use am to combine the multiply-shift-add into one call
        j = i+this.m.t;
        x[j] += this.m.am(0,u0,x,i,0,this.m.t);
        // propagate carry
        while(x[j] >= x.DV) { x[j] -= x.DV; x[++j]++; }
      }
      x.clamp();
      x.drShiftTo(this.m.t,x);
      if(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
    }

    // r = "x^2/R mod m"; x != r
    function montSqrTo(x,r) { x.squareTo(r); this.reduce(r); }

    // r = "xy/R mod m"; x,y != r
    function montMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }

    Montgomery.prototype.convert = montConvert;
    Montgomery.prototype.revert = montRevert;
    Montgomery.prototype.reduce = montReduce;
    Montgomery.prototype.mulTo = montMulTo;
    Montgomery.prototype.sqrTo = montSqrTo;

    // (protected) true iff this is even
    function bnpIsEven() { return ((this.t>0)?(this[0]&1):this.s) == 0; }

    // (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79)
    function bnpExp(e,z) {
      if(e > 0xffffffff || e < 1) return BigInteger.ONE;
      var r = nbi(), r2 = nbi(), g = z.convert(this), i = nbits(e)-1;
      g.copyTo(r);
      while(--i >= 0) {
        z.sqrTo(r,r2);
        if((e&(1<<i)) > 0) z.mulTo(r2,g,r);
        else { var t = r; r = r2; r2 = t; }
      }
      return z.revert(r);
    }

    // (public) this^e % m, 0 <= e < 2^32
    function bnModPowInt(e,m) {
      var z;
      if(e < 256 || m.isEven()) z = new Classic(m); else z = new Montgomery(m);
      return this.exp(e,z);
    }

    // protected
    BigInteger.prototype.copyTo = bnpCopyTo;
    BigInteger.prototype.fromInt = bnpFromInt;
    BigInteger.prototype.fromString = bnpFromString;
    BigInteger.prototype.clamp = bnpClamp;
    BigInteger.prototype.dlShiftTo = bnpDLShiftTo;
    BigInteger.prototype.drShiftTo = bnpDRShiftTo;
    BigInteger.prototype.lShiftTo = bnpLShiftTo;
    BigInteger.prototype.rShiftTo = bnpRShiftTo;
    BigInteger.prototype.subTo = bnpSubTo;
    BigInteger.prototype.multiplyTo = bnpMultiplyTo;
    BigInteger.prototype.squareTo = bnpSquareTo;
    BigInteger.prototype.divRemTo = bnpDivRemTo;
    BigInteger.prototype.invDigit = bnpInvDigit;
    BigInteger.prototype.isEven = bnpIsEven;
    BigInteger.prototype.exp = bnpExp;

    // public
    BigInteger.prototype.toString = bnToString;
    BigInteger.prototype.negate = bnNegate;
    BigInteger.prototype.abs = bnAbs;
    BigInteger.prototype.compareTo = bnCompareTo;
    BigInteger.prototype.bitLength = bnBitLength;
    BigInteger.prototype.mod = bnMod;
    BigInteger.prototype.modPowInt = bnModPowInt;

    // "constants"
    BigInteger.ZERO = nbv(0);
    BigInteger.ONE = nbv(1);

    // Copyright (c) 2005-2009  Tom Wu
    // All Rights Reserved.
    // See "LICENSE" for details.

    // Extended JavaScript BN functions, required for RSA private ops.

    // Version 1.1: new BigInteger("0", 10) returns "proper" zero
    // Version 1.2: square() API, isProbablePrime fix

    // (public)
    function bnClone() { var r = nbi(); this.copyTo(r); return r; }

    // (public) return value as integer
    function bnIntValue() {
      if(this.s < 0) {
        if(this.t == 1) return this[0]-this.DV;
        else if(this.t == 0) return -1;
      }
      else if(this.t == 1) return this[0];
      else if(this.t == 0) return 0;
      // assumes 16 < DB < 32
      return ((this[1]&((1<<(32-this.DB))-1))<<this.DB)|this[0];
    }

    // (public) return value as byte
    function bnByteValue() { return (this.t==0)?this.s:(this[0]<<24)>>24; }

    // (public) return value as short (assumes DB>=16)
    function bnShortValue() { return (this.t==0)?this.s:(this[0]<<16)>>16; }

    // (protected) return x s.t. r^x < DV
    function bnpChunkSize(r) { return Math.floor(Math.LN2*this.DB/Math.log(r)); }

    // (public) 0 if this == 0, 1 if this > 0
    function bnSigNum() {
      if(this.s < 0) return -1;
      else if(this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0;
      else return 1;
    }

    // (protected) convert to radix string
    function bnpToRadix(b) {
      if(b == null) b = 10;
      if(this.signum() == 0 || b < 2 || b > 36) return "0";
      var cs = this.chunkSize(b);
      var a = Math.pow(b,cs);
      var d = nbv(a), y = nbi(), z = nbi(), r = "";
      this.divRemTo(d,y,z);
      while(y.signum() > 0) {
        r = (a+z.intValue()).toString(b).substr(1) + r;
        y.divRemTo(d,y,z);
      }
      return z.intValue().toString(b) + r;
    }

    // (protected) convert from radix string
    function bnpFromRadix(s,b) {
      this.fromInt(0);
      if(b == null) b = 10;
      var cs = this.chunkSize(b);
      var d = Math.pow(b,cs), mi = false, j = 0, w = 0;
      for(var i = 0; i < s.length; ++i) {
        var x = intAt(s,i);
        if(x < 0) {
          if(s.charAt(i) == "-" && this.signum() == 0) mi = true;
          continue;
        }
        w = b*w+x;
        if(++j >= cs) {
          this.dMultiply(d);
          this.dAddOffset(w,0);
          j = 0;
          w = 0;
        }
      }
      if(j > 0) {
        this.dMultiply(Math.pow(b,j));
        this.dAddOffset(w,0);
      }
      if(mi) BigInteger.ZERO.subTo(this,this);
    }

    // (protected) alternate constructor
    function bnpFromNumber(a,b,c) {
      if("number" == typeof b) {
        // new BigInteger(int,int,RNG)
        if(a < 2) this.fromInt(1);
        else {
          this.fromNumber(a,c);
          if(!this.testBit(a-1))    // force MSB set
            this.bitwiseTo(BigInteger.ONE.shiftLeft(a-1),op_or,this);
          if(this.isEven()) this.dAddOffset(1,0); // force odd
          while(!this.isProbablePrime(b)) {
            this.dAddOffset(2,0);
            if(this.bitLength() > a) this.subTo(BigInteger.ONE.shiftLeft(a-1),this);
          }
        }
      }
      else {
        // new BigInteger(int,RNG)
        var x = new Array(), t = a&7;
        x.length = (a>>3)+1;
        b.nextBytes(x);
        if(t > 0) x[0] &= ((1<<t)-1); else x[0] = 0;
        this.fromString(x,256);
      }
    }

    // (public) convert to bigendian byte array
    function bnToByteArray() {
      var i = this.t, r = new Array();
      r[0] = this.s;
      var p = this.DB-(i*this.DB)%8, d, k = 0;
      if(i-- > 0) {
        if(p < this.DB && (d = this[i]>>p) != (this.s&this.DM)>>p)
          r[k++] = d|(this.s<<(this.DB-p));
        while(i >= 0) {
          if(p < 8) {
            d = (this[i]&((1<<p)-1))<<(8-p);
            d |= this[--i]>>(p+=this.DB-8);
          }
          else {
            d = (this[i]>>(p-=8))&0xff;
            if(p <= 0) { p += this.DB; --i; }
          }
          if((d&0x80) != 0) d |= -256;
          if(k == 0 && (this.s&0x80) != (d&0x80)) ++k;
          if(k > 0 || d != this.s) r[k++] = d;
        }
      }
      return r;
    }

    function bnEquals(a) { return(this.compareTo(a)==0); }
    function bnMin(a) { return(this.compareTo(a)<0)?this:a; }
    function bnMax(a) { return(this.compareTo(a)>0)?this:a; }

    // (protected) r = this op a (bitwise)
    function bnpBitwiseTo(a,op,r) {
      var i, f, m = Math.min(a.t,this.t);
      for(i = 0; i < m; ++i) r[i] = op(this[i],a[i]);
      if(a.t < this.t) {
        f = a.s&this.DM;
        for(i = m; i < this.t; ++i) r[i] = op(this[i],f);
        r.t = this.t;
      }
      else {
        f = this.s&this.DM;
        for(i = m; i < a.t; ++i) r[i] = op(f,a[i]);
        r.t = a.t;
      }
      r.s = op(this.s,a.s);
      r.clamp();
    }

    // (public) this & a
    function op_and(x,y) { return x&y; }
    function bnAnd(a) { var r = nbi(); this.bitwiseTo(a,op_and,r); return r; }

    // (public) this | a
    function op_or(x,y) { return x|y; }
    function bnOr(a) { var r = nbi(); this.bitwiseTo(a,op_or,r); return r; }

    // (public) this ^ a
    function op_xor(x,y) { return x^y; }
    function bnXor(a) { var r = nbi(); this.bitwiseTo(a,op_xor,r); return r; }

    // (public) this & ~a
    function op_andnot(x,y) { return x&~y; }
    function bnAndNot(a) { var r = nbi(); this.bitwiseTo(a,op_andnot,r); return r; }

    // (public) ~this
    function bnNot() {
      var r = nbi();
      for(var i = 0; i < this.t; ++i) r[i] = this.DM&~this[i];
      r.t = this.t;
      r.s = ~this.s;
      return r;
    }

    // (public) this << n
    function bnShiftLeft(n) {
      var r = nbi();
      if(n < 0) this.rShiftTo(-n,r); else this.lShiftTo(n,r);
      return r;
    }

    // (public) this >> n
    function bnShiftRight(n) {
      var r = nbi();
      if(n < 0) this.lShiftTo(-n,r); else this.rShiftTo(n,r);
      return r;
    }

    // return index of lowest 1-bit in x, x < 2^31
    function lbit(x) {
      if(x == 0) return -1;
      var r = 0;
      if((x&0xffff) == 0) { x >>= 16; r += 16; }
      if((x&0xff) == 0) { x >>= 8; r += 8; }
      if((x&0xf) == 0) { x >>= 4; r += 4; }
      if((x&3) == 0) { x >>= 2; r += 2; }
      if((x&1) == 0) ++r;
      return r;
    }

    // (public) returns index of lowest 1-bit (or -1 if none)
    function bnGetLowestSetBit() {
      for(var i = 0; i < this.t; ++i)
        if(this[i] != 0) return i*this.DB+lbit(this[i]);
      if(this.s < 0) return this.t*this.DB;
      return -1;
    }

    // return number of 1 bits in x
    function cbit(x) {
      var r = 0;
      while(x != 0) { x &= x-1; ++r; }
      return r;
    }

    // (public) return number of set bits
    function bnBitCount() {
      var r = 0, x = this.s&this.DM;
      for(var i = 0; i < this.t; ++i) r += cbit(this[i]^x);
      return r;
    }

    // (public) true iff nth bit is set
    function bnTestBit(n) {
      var j = Math.floor(n/this.DB);
      if(j >= this.t) return(this.s!=0);
      return((this[j]&(1<<(n%this.DB)))!=0);
    }

    // (protected) this op (1<<n)
    function bnpChangeBit(n,op) {
      var r = BigInteger.ONE.shiftLeft(n);
      this.bitwiseTo(r,op,r);
      return r;
    }

    // (public) this | (1<<n)
    function bnSetBit(n) { return this.changeBit(n,op_or); }

    // (public) this & ~(1<<n)
    function bnClearBit(n) { return this.changeBit(n,op_andnot); }

    // (public) this ^ (1<<n)
    function bnFlipBit(n) { return this.changeBit(n,op_xor); }

    // (protected) r = this + a
    function bnpAddTo(a,r) {
      var i = 0, c = 0, m = Math.min(a.t,this.t);
      while(i < m) {
        c += this[i]+a[i];
        r[i++] = c&this.DM;
        c >>= this.DB;
      }
      if(a.t < this.t) {
        c += a.s;
        while(i < this.t) {
          c += this[i];
          r[i++] = c&this.DM;
          c >>= this.DB;
        }
        c += this.s;
      }
      else {
        c += this.s;
        while(i < a.t) {
          c += a[i];
          r[i++] = c&this.DM;
          c >>= this.DB;
        }
        c += a.s;
      }
      r.s = (c<0)?-1:0;
      if(c > 0) r[i++] = c;
      else if(c < -1) r[i++] = this.DV+c;
      r.t = i;
      r.clamp();
    }

    // (public) this + a
    function bnAdd(a) { var r = nbi(); this.addTo(a,r); return r; }

    // (public) this - a
    function bnSubtract(a) { var r = nbi(); this.subTo(a,r); return r; }

    // (public) this * a
    function bnMultiply(a) { var r = nbi(); this.multiplyTo(a,r); return r; }

    // (public) this^2
    function bnSquare() { var r = nbi(); this.squareTo(r); return r; }

    // (public) this / a
    function bnDivide(a) { var r = nbi(); this.divRemTo(a,r,null); return r; }

    // (public) this % a
    function bnRemainder(a) { var r = nbi(); this.divRemTo(a,null,r); return r; }

    // (public) [this/a,this%a]
    function bnDivideAndRemainder(a) {
      var q = nbi(), r = nbi();
      this.divRemTo(a,q,r);
      return new Array(q,r);
    }

    // (protected) this *= n, this >= 0, 1 < n < DV
    function bnpDMultiply(n) {
      this[this.t] = this.am(0,n-1,this,0,0,this.t);
      ++this.t;
      this.clamp();
    }

    // (protected) this += n << w words, this >= 0
    function bnpDAddOffset(n,w) {
      if(n == 0) return;
      while(this.t <= w) this[this.t++] = 0;
      this[w] += n;
      while(this[w] >= this.DV) {
        this[w] -= this.DV;
        if(++w >= this.t) this[this.t++] = 0;
        ++this[w];
      }
    }

    // A "null" reducer
    function NullExp() {}
    function nNop(x) { return x; }
    function nMulTo(x,y,r) { x.multiplyTo(y,r); }
    function nSqrTo(x,r) { x.squareTo(r); }

    NullExp.prototype.convert = nNop;
    NullExp.prototype.revert = nNop;
    NullExp.prototype.mulTo = nMulTo;
    NullExp.prototype.sqrTo = nSqrTo;

    // (public) this^e
    function bnPow(e) { return this.exp(e,new NullExp()); }

    // (protected) r = lower n words of "this * a", a.t <= n
    // "this" should be the larger one if appropriate.
    function bnpMultiplyLowerTo(a,n,r) {
      var i = Math.min(this.t+a.t,n);
      r.s = 0; // assumes a,this >= 0
      r.t = i;
      while(i > 0) r[--i] = 0;
      var j;
      for(j = r.t-this.t; i < j; ++i) r[i+this.t] = this.am(0,a[i],r,i,0,this.t);
      for(j = Math.min(a.t,n); i < j; ++i) this.am(0,a[i],r,i,0,n-i);
      r.clamp();
    }

    // (protected) r = "this * a" without lower n words, n > 0
    // "this" should be the larger one if appropriate.
    function bnpMultiplyUpperTo(a,n,r) {
      --n;
      var i = r.t = this.t+a.t-n;
      r.s = 0; // assumes a,this >= 0
      while(--i >= 0) r[i] = 0;
      for(i = Math.max(n-this.t,0); i < a.t; ++i)
        r[this.t+i-n] = this.am(n-i,a[i],r,0,0,this.t+i-n);
      r.clamp();
      r.drShiftTo(1,r);
    }

    // Barrett modular reduction
    function Barrett(m) {
      // setup Barrett
      this.r2 = nbi();
      this.q3 = nbi();
      BigInteger.ONE.dlShiftTo(2*m.t,this.r2);
      this.mu = this.r2.divide(m);
      this.m = m;
    }

    function barrettConvert(x) {
      if(x.s < 0 || x.t > 2*this.m.t) return x.mod(this.m);
      else if(x.compareTo(this.m) < 0) return x;
      else { var r = nbi(); x.copyTo(r); this.reduce(r); return r; }
    }

    function barrettRevert(x) { return x; }

    // x = x mod m (HAC 14.42)
    function barrettReduce(x) {
      x.drShiftTo(this.m.t-1,this.r2);
      if(x.t > this.m.t+1) { x.t = this.m.t+1; x.clamp(); }
      this.mu.multiplyUpperTo(this.r2,this.m.t+1,this.q3);
      this.m.multiplyLowerTo(this.q3,this.m.t+1,this.r2);
      while(x.compareTo(this.r2) < 0) x.dAddOffset(1,this.m.t+1);
      x.subTo(this.r2,x);
      while(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
    }

    // r = x^2 mod m; x != r
    function barrettSqrTo(x,r) { x.squareTo(r); this.reduce(r); }

    // r = x*y mod m; x,y != r
    function barrettMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }

    Barrett.prototype.convert = barrettConvert;
    Barrett.prototype.revert = barrettRevert;
    Barrett.prototype.reduce = barrettReduce;
    Barrett.prototype.mulTo = barrettMulTo;
    Barrett.prototype.sqrTo = barrettSqrTo;

    // (public) this^e % m (HAC 14.85)
    function bnModPow(e,m) {
      var i = e.bitLength(), k, r = nbv(1), z;
      if(i <= 0) return r;
      else if(i < 18) k = 1;
      else if(i < 48) k = 3;
      else if(i < 144) k = 4;
      else if(i < 768) k = 5;
      else k = 6;
      if(i < 8)
        z = new Classic(m);
      else if(m.isEven())
        z = new Barrett(m);
      else
        z = new Montgomery(m);

      // precomputation
      var g = new Array(), n = 3, k1 = k-1, km = (1<<k)-1;
      g[1] = z.convert(this);
      if(k > 1) {
        var g2 = nbi();
        z.sqrTo(g[1],g2);
        while(n <= km) {
          g[n] = nbi();
          z.mulTo(g2,g[n-2],g[n]);
          n += 2;
        }
      }

      var j = e.t-1, w, is1 = true, r2 = nbi(), t;
      i = nbits(e[j])-1;
      while(j >= 0) {
        if(i >= k1) w = (e[j]>>(i-k1))&km;
        else {
          w = (e[j]&((1<<(i+1))-1))<<(k1-i);
          if(j > 0) w |= e[j-1]>>(this.DB+i-k1);
        }

        n = k;
        while((w&1) == 0) { w >>= 1; --n; }
        if((i -= n) < 0) { i += this.DB; --j; }
        if(is1) {    // ret == 1, don't bother squaring or multiplying it
          g[w].copyTo(r);
          is1 = false;
        }
        else {
          while(n > 1) { z.sqrTo(r,r2); z.sqrTo(r2,r); n -= 2; }
          if(n > 0) z.sqrTo(r,r2); else { t = r; r = r2; r2 = t; }
          z.mulTo(r2,g[w],r);
        }

        while(j >= 0 && (e[j]&(1<<i)) == 0) {
          z.sqrTo(r,r2); t = r; r = r2; r2 = t;
          if(--i < 0) { i = this.DB-1; --j; }
        }
      }
      return z.revert(r);
    }

    // (public) gcd(this,a) (HAC 14.54)
    function bnGCD(a) {
      var x = (this.s<0)?this.negate():this.clone();
      var y = (a.s<0)?a.negate():a.clone();
      if(x.compareTo(y) < 0) { var t = x; x = y; y = t; }
      var i = x.getLowestSetBit(), g = y.getLowestSetBit();
      if(g < 0) return x;
      if(i < g) g = i;
      if(g > 0) {
        x.rShiftTo(g,x);
        y.rShiftTo(g,y);
      }
      while(x.signum() > 0) {
        if((i = x.getLowestSetBit()) > 0) x.rShiftTo(i,x);
        if((i = y.getLowestSetBit()) > 0) y.rShiftTo(i,y);
        if(x.compareTo(y) >= 0) {
          x.subTo(y,x);
          x.rShiftTo(1,x);
        }
        else {
          y.subTo(x,y);
          y.rShiftTo(1,y);
        }
      }
      if(g > 0) y.lShiftTo(g,y);
      return y;
    }

    // (protected) this % n, n < 2^26
    function bnpModInt(n) {
      if(n <= 0) return 0;
      var d = this.DV%n, r = (this.s<0)?n-1:0;
      if(this.t > 0)
        if(d == 0) r = this[0]%n;
        else for(var i = this.t-1; i >= 0; --i) r = (d*r+this[i])%n;
      return r;
    }

    // (public) 1/this % m (HAC 14.61)
    function bnModInverse(m) {
      var ac = m.isEven();
      if((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO;
      var u = m.clone(), v = this.clone();
      var a = nbv(1), b = nbv(0), c = nbv(0), d = nbv(1);
      while(u.signum() != 0) {
        while(u.isEven()) {
          u.rShiftTo(1,u);
          if(ac) {
            if(!a.isEven() || !b.isEven()) { a.addTo(this,a); b.subTo(m,b); }
            a.rShiftTo(1,a);
          }
          else if(!b.isEven()) b.subTo(m,b);
          b.rShiftTo(1,b);
        }
        while(v.isEven()) {
          v.rShiftTo(1,v);
          if(ac) {
            if(!c.isEven() || !d.isEven()) { c.addTo(this,c); d.subTo(m,d); }
            c.rShiftTo(1,c);
          }
          else if(!d.isEven()) d.subTo(m,d);
          d.rShiftTo(1,d);
        }
        if(u.compareTo(v) >= 0) {
          u.subTo(v,u);
          if(ac) a.subTo(c,a);
          b.subTo(d,b);
        }
        else {
          v.subTo(u,v);
          if(ac) c.subTo(a,c);
          d.subTo(b,d);
        }
      }
      if(v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO;
      if(d.compareTo(m) >= 0) return d.subtract(m);
      if(d.signum() < 0) d.addTo(m,d); else return d;
      if(d.signum() < 0) return d.add(m); else return d;
    }

    var lowprimes = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997];
    var lplim = (1<<26)/lowprimes[lowprimes.length-1];

    // (public) test primality with certainty >= 1-.5^t
    function bnIsProbablePrime(t) {
      var i, x = this.abs();
      if(x.t == 1 && x[0] <= lowprimes[lowprimes.length-1]) {
        for(i = 0; i < lowprimes.length; ++i)
          if(x[0] == lowprimes[i]) return true;
        return false;
      }
      if(x.isEven()) return false;
      i = 1;
      while(i < lowprimes.length) {
        var m = lowprimes[i], j = i+1;
        while(j < lowprimes.length && m < lplim) m *= lowprimes[j++];
        m = x.modInt(m);
        while(i < j) if(m%lowprimes[i++] == 0) return false;
      }
      return x.millerRabin(t);
    }

    // (protected) true if probably prime (HAC 4.24, Miller-Rabin)
    function bnpMillerRabin(t) {
      var n1 = this.subtract(BigInteger.ONE);
      var k = n1.getLowestSetBit();
      if(k <= 0) return false;
      var r = n1.shiftRight(k);
      t = (t+1)>>1;
      if(t > lowprimes.length) t = lowprimes.length;
      var a = nbi();
      for(var i = 0; i < t; ++i) {
        //Pick bases at random, instead of starting at 2
        a.fromInt(lowprimes[Math.floor(Math.random()*lowprimes.length)]);
        var y = a.modPow(r,this);
        if(y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) {
          var j = 1;
          while(j++ < k && y.compareTo(n1) != 0) {
            y = y.modPowInt(2,this);
            if(y.compareTo(BigInteger.ONE) == 0) return false;
          }
          if(y.compareTo(n1) != 0) return false;
        }
      }
      return true;
    }

    // protected
    BigInteger.prototype.chunkSize = bnpChunkSize;
    BigInteger.prototype.toRadix = bnpToRadix;
    BigInteger.prototype.fromRadix = bnpFromRadix;
    BigInteger.prototype.fromNumber = bnpFromNumber;
    BigInteger.prototype.bitwiseTo = bnpBitwiseTo;
    BigInteger.prototype.changeBit = bnpChangeBit;
    BigInteger.prototype.addTo = bnpAddTo;
    BigInteger.prototype.dMultiply = bnpDMultiply;
    BigInteger.prototype.dAddOffset = bnpDAddOffset;
    BigInteger.prototype.multiplyLowerTo = bnpMultiplyLowerTo;
    BigInteger.prototype.multiplyUpperTo = bnpMultiplyUpperTo;
    BigInteger.prototype.modInt = bnpModInt;
    BigInteger.prototype.millerRabin = bnpMillerRabin;

    // public
    BigInteger.prototype.clone = bnClone;
    BigInteger.prototype.intValue = bnIntValue;
    BigInteger.prototype.byteValue = bnByteValue;
    BigInteger.prototype.shortValue = bnShortValue;
    BigInteger.prototype.signum = bnSigNum;
    BigInteger.prototype.toByteArray = bnToByteArray;
    BigInteger.prototype.equals = bnEquals;
    BigInteger.prototype.min = bnMin;
    BigInteger.prototype.max = bnMax;
    BigInteger.prototype.and = bnAnd;
    BigInteger.prototype.or = bnOr;
    BigInteger.prototype.xor = bnXor;
    BigInteger.prototype.andNot = bnAndNot;
    BigInteger.prototype.not = bnNot;
    BigInteger.prototype.shiftLeft = bnShiftLeft;
    BigInteger.prototype.shiftRight = bnShiftRight;
    BigInteger.prototype.getLowestSetBit = bnGetLowestSetBit;
    BigInteger.prototype.bitCount = bnBitCount;
    BigInteger.prototype.testBit = bnTestBit;
    BigInteger.prototype.setBit = bnSetBit;
    BigInteger.prototype.clearBit = bnClearBit;
    BigInteger.prototype.flipBit = bnFlipBit;
    BigInteger.prototype.add = bnAdd;
    BigInteger.prototype.subtract = bnSubtract;
    BigInteger.prototype.multiply = bnMultiply;
    BigInteger.prototype.divide = bnDivide;
    BigInteger.prototype.remainder = bnRemainder;
    BigInteger.prototype.divideAndRemainder = bnDivideAndRemainder;
    BigInteger.prototype.modPow = bnModPow;
    BigInteger.prototype.modInverse = bnModInverse;
    BigInteger.prototype.pow = bnPow;
    BigInteger.prototype.gcd = bnGCD;
    BigInteger.prototype.isProbablePrime = bnIsProbablePrime;

    // JSBN-specific extension
    BigInteger.prototype.square = bnSquare;

    // Expose the Barrett function
    BigInteger.prototype.Barrett = Barrett

    // BigInteger interfaces not implemented in jsbn:

    // BigInteger(int signum, byte[] magnitude)
    // double doubleValue()
    // float floatValue()
    // int hashCode()
    // long longValue()
    // static BigInteger valueOf(long val)

    // Random number generator - requires a PRNG backend, e.g. prng4.js

    // For best results, put code like
    // <body onClick='rng_seed_time();' onKeyPress='rng_seed_time();'>
    // in your main HTML document.

    var rng_state;
    var rng_pool;
    var rng_pptr;

    // Mix in a 32-bit integer into the pool
    function rng_seed_int(x) {
      rng_pool[rng_pptr++] ^= x & 255;
      rng_pool[rng_pptr++] ^= (x >> 8) & 255;
      rng_pool[rng_pptr++] ^= (x >> 16) & 255;
      rng_pool[rng_pptr++] ^= (x >> 24) & 255;
      if(rng_pptr >= rng_psize) rng_pptr -= rng_psize;
    }

    // Mix in the current time (w/milliseconds) into the pool
    function rng_seed_time() {
      rng_seed_int(new Date().getTime());
    }

    // Initialize the pool with junk if needed.
    if(rng_pool == null) {
      rng_pool = new Array();
      rng_pptr = 0;
      var t;
      if(typeof window !== "undefined" && window.crypto) {
        if (window.crypto.getRandomValues) {
          // Use webcrypto if available
          var ua = new Uint8Array(32);
          window.crypto.getRandomValues(ua);
          for(t = 0; t < 32; ++t)
            rng_pool[rng_pptr++] = ua[t];
        }
        else if(navigator.appName == "Netscape" && navigator.appVersion < "5") {
          // Extract entropy (256 bits) from NS4 RNG if available
          var z = window.crypto.random(32);
          for(t = 0; t < z.length; ++t)
            rng_pool[rng_pptr++] = z.charCodeAt(t) & 255;
        }
      }
      while(rng_pptr < rng_psize) {  // extract some randomness from Math.random()
        t = Math.floor(65536 * Math.random());
        rng_pool[rng_pptr++] = t >>> 8;
        rng_pool[rng_pptr++] = t & 255;
      }
      rng_pptr = 0;
      rng_seed_time();
      //rng_seed_int(window.screenX);
      //rng_seed_int(window.screenY);
    }

    function rng_get_byte() {
      if(rng_state == null) {
        rng_seed_time();
        rng_state = prng_newstate();
        rng_state.init(rng_pool);
        for(rng_pptr = 0; rng_pptr < rng_pool.length; ++rng_pptr)
          rng_pool[rng_pptr] = 0;
        rng_pptr = 0;
        //rng_pool = null;
      }
      // TODO: allow reseeding after first request
      return rng_state.next();
    }

    function rng_get_bytes(ba) {
      var i;
      for(i = 0; i < ba.length; ++i) ba[i] = rng_get_byte();
    }

    function SecureRandom() {}

    SecureRandom.prototype.nextBytes = rng_get_bytes;

    // prng4.js - uses Arcfour as a PRNG

    function Arcfour() {
      this.i = 0;
      this.j = 0;
      this.S = new Array();
    }

    // Initialize arcfour context from key, an array of ints, each from [0..255]
    function ARC4init(key) {
      var i, j, t;
      for(i = 0; i < 256; ++i)
        this.S[i] = i;
      j = 0;
      for(i = 0; i < 256; ++i) {
        j = (j + this.S[i] + key[i % key.length]) & 255;
        t = this.S[i];
        this.S[i] = this.S[j];
        this.S[j] = t;
      }
      this.i = 0;
      this.j = 0;
    }

    function ARC4next() {
      var t;
      this.i = (this.i + 1) & 255;
      this.j = (this.j + this.S[this.i]) & 255;
      t = this.S[this.i];
      this.S[this.i] = this.S[this.j];
      this.S[this.j] = t;
      return this.S[(t + this.S[this.i]) & 255];
    }

    Arcfour.prototype.init = ARC4init;
    Arcfour.prototype.next = ARC4next;

    // Plug in your RNG constructor here
    function prng_newstate() {
      return new Arcfour();
    }

    // Pool size must be a multiple of 4 and greater than 32.
    // An array of bytes the size of the pool will be passed to init()
    var rng_psize = 256;

    if (typeof exports !== 'undefined') {
        exports = module.exports = {
            default: BigInteger,
            BigInteger: BigInteger,
            SecureRandom: SecureRandom,
        };
    } else {
        this.jsbn = {
          BigInteger: BigInteger,
          SecureRandom: SecureRandom
        };
    }

}).call(this);

/*********/
(function (factory) {
    "use strict";

    var root = (typeof self === "object" && self.self === self && self) ||
                (typeof global === "object" && global.global === global && global);


    if (typeof exports !== "undefined") {
        var BigInteger = require("jsbn").BigInteger;
        factory(root, exports, BigInteger);
    } else {
        var BigInt = root.BigInteger ? root.BigInteger : root.jsbn.BigInteger;
        root.Money = factory(root, {}, BigInt);
    }
}(function (root, Money, BigInteger) {
    "use strict";

    var Currency = function (code) {
            this.code = code;
        },

        separateThousands = function (inStr, withStr) {
            var sign = "",
                src = inStr,
                ret = "",
                appendix;

            if (inStr[0] === "-") {
                sign = "-";
                src = src.substr(1);
            }


            while (src.length > 0) {
                if (ret.length > 0) {
                    ret = withStr + ret;
                }

                if (src.length <= 3) {
                    ret = src + ret;
                    break;
                }

                appendix = src.substr(src.length - 3, 3);
                ret = appendix + ret;
                src = src.substr(0, src.length - 3);
            }

            return sign + ret;
        },

        integerValue = function (amount) {
            return (/^(\-?\d+)\.\d\d$/).exec(amount)[1];
        },

        isString = function (obj) {
            return Object.prototype.toString.call(obj) === "[object String]";
        },

        round = function (amount) {
            var fraction = parseInt(amount.substr(-2), 10),
                wholeAmount = integerValue(amount) + ".00";

            return (
                fraction < 50 ?
                    wholeAmount :
                    Money.add(wholeAmount, "1.00")
            );
        };

    Currency.prototype.format = function (amount) {
        switch (this.code) {
        case "JPY":
            return separateThousands(integerValue(amount), ",");

        case "EUR":
        case "GBP":
            return separateThousands(integerValue(amount), ".") + "," + amount.substr(-2);

        case "CHF":
        case "USD":
            return separateThousands(integerValue(amount), ",") + "." + amount.substr(-2);

        case "SEK":
        case "LTL":
        case "PLN":
        case "SKK":
        case "UAH":
            return separateThousands(integerValue(amount), " ") + "," + amount.substr(-2);

        default:
            return amount;
        }
    };

    Money.amountToCents = function (amount) {
        return amount.replace(".", "").replace(/^0+/, "");
    };

    Money.centsToAmount = function (cents) {
        var sign,
            abs;

        if (!isString(cents)) {
            return undefined;
        }

        sign = (cents[0] === "-" ? "-" : "");
        abs = (sign === "-" ? cents.substr(1) : cents);

        while (abs.length < 3) {
            abs = ["0", abs].join("");
        }

        return sign + abs.substr(0, abs.length - 2) + "." + abs.substr(-2);
    };

    Money.floatToAmount = function (f) {
        return ("" + (Math.round(f * 100.0) / 100.0))
            .replace(/^-(\d+)$/, "-$1.00")              //-xx
            .replace(/^(\d+)$/, "$1.00")                //xx
            .replace(/^-(\d+)\.(\d)$/, "-$1.$20")       //-xx.xx
            .replace(/^(\d+)\.(\d)$/, "$1.$20");        //xx.xx
    };

    Money.integralPart = function (amount) {
        return integerValue(amount);
    };

    Money.format = function (currency, amount) {
        return new Currency(currency).format(amount);
    };

    Money.add = function (a, b) {
        return Money.centsToAmount(
            new BigInteger(
                Money.amountToCents(a)
            ).add(
                new BigInteger(Money.amountToCents(b))
            ).toString()
        );
    };

    Money.subtract = function (a, b) {
        return Money.centsToAmount(
            new BigInteger(
                Money.amountToCents(a)
            ).subtract(
                new BigInteger(Money.amountToCents(b))
            ).toString()
        );
    };

    Money.mul = function (a, b) {
        var hundredthsOfCents = new BigInteger(
                Money.amountToCents(a)
            ).multiply(
                new BigInteger(Money.amountToCents(b))
            ),

            remainder = parseInt(hundredthsOfCents.toString().substr(-2), 10);

        return Money.centsToAmount(
            hundredthsOfCents.divide(
                new BigInteger("100")
            ).add(
                new BigInteger(remainder >= 50 ? "1" : "0")
            ).toString()
        );
    };

    Money.div = function (a, b) {
        var hundredthsOfCents = new BigInteger(
                Money.amountToCents(a)
            ).multiply(
                new BigInteger("10000")
            ).divide(
                new BigInteger(Money.amountToCents(b))
            ),

            remainder = parseInt(hundredthsOfCents.toString().substr(-2), 10);

        return Money.centsToAmount(
            hundredthsOfCents.divide(
                new BigInteger("100")
            ).add(
                new BigInteger(remainder >= 50 ? "1" : "0")
            ).toString()
        );
    };

    Money.percent = function (value, percent) {
        var p = new BigInteger(
                Money.amountToCents(value)
            ).multiply(
                new BigInteger(Money.amountToCents(percent))
            ),

            q = p.divide(new BigInteger("10000")),
            r = p.mod(new BigInteger("10000"));

        return Money.centsToAmount(
            (r.compareTo(new BigInteger("4999")) > 0 ? q.add(new BigInteger("1")) : q).toString()
        );
    };

    Money.roundUpTo5Cents = function (amount) {
        var lastDigit = parseInt(amount.substr(-1), 10),
            additon = "0.00";

        if ((lastDigit % 5) !== 0) {
            additon = "0.0" + (5 - (lastDigit % 5));
        }

        return Money.add(amount, additon);
    };

    Money.roundTo5Cents = function (amount) {
        return Money.div(
            round(Money.mul(amount, "20.00")),
            "20.00"
        );
    };

    Money.cmp = function (a, b) {
        return new BigInteger(a.replace(".", "")).compareTo(new BigInteger(b.replace(".", "")));
    };

    Money.isEqual = function (a, b) {
        return Money.cmp(a, b) === 0;
    };

    Money.isZero = function (a) {
        return Money.isEqual(a, "0.00");
    };

    Money.isNegative = function (a) {
        return Money.cmp(a, "0.00") < 0;
    };

    Money.isPositive = function (a) {
        return Money.cmp(a, "0.00") > 0;
    };

    return Money;
}));

/*********/
!function(){"use strict";if("undefined"!=typeof window){var t=window.navigator.userAgent.match(/Edge\/(\d{2})\./),e=t?parseInt(t[1],10):null,n=!!e&&(16<=e&&e<=18);if(!("objectFit"in document.documentElement.style!=!1)||n){var o=function(t,e,i){var n,o,l,a,d;if((i=i.split(" ")).length<2&&(i[1]=i[0]),"x"===t)n=i[0],o=i[1],l="left",a="right",d=e.clientWidth;else{if("y"!==t)return;n=i[1],o=i[0],l="top",a="bottom",d=e.clientHeight}if(n!==l&&o!==l){if(n!==a&&o!==a)return"center"===n||"50%"===n?(e.style[l]="50%",void(e.style["margin-"+l]=d/-2+"px")):void(0<=n.indexOf("%")?(n=parseInt(n,10))<50?(e.style[l]=n+"%",e.style["margin-"+l]=d*(n/-100)+"px"):(n=100-n,e.style[a]=n+"%",e.style["margin-"+a]=d*(n/-100)+"px"):e.style[l]=n);e.style[a]="0"}else e.style[l]="0"},l=function(t){var e=t.dataset?t.dataset.objectFit:t.getAttribute("data-object-fit"),i=t.dataset?t.dataset.objectPosition:t.getAttribute("data-object-position");e=e||"cover",i=i||"50% 50%";var n=t.parentNode;return function(t){var e=window.getComputedStyle(t,null),i=e.getPropertyValue("position"),n=e.getPropertyValue("overflow"),o=e.getPropertyValue("display");i&&"static"!==i||(t.style.position="relative"),"hidden"!==n&&(t.style.overflow="hidden"),o&&"inline"!==o||(t.style.display="block"),0===t.clientHeight&&(t.style.height="100%"),-1===t.className.indexOf("object-fit-polyfill")&&(t.className=t.className+" object-fit-polyfill")}(n),function(t){var e=window.getComputedStyle(t,null),i={"max-width":"none","max-height":"none","min-width":"0px","min-height":"0px",top:"auto",right:"auto",bottom:"auto",left:"auto","margin-top":"0px","margin-right":"0px","margin-bottom":"0px","margin-left":"0px"};for(var n in i)e.getPropertyValue(n)!==i[n]&&(t.style[n]=i[n])}(t),t.style.position="absolute",t.style.width="auto",t.style.height="auto","scale-down"===e&&(e=t.clientWidth<n.clientWidth&&t.clientHeight<n.clientHeight?"none":"contain"),"none"===e?(o("x",t,i),void o("y",t,i)):"fill"===e?(t.style.width="100%",t.style.height="100%",o("x",t,i),void o("y",t,i)):(t.style.height="100%",void("cover"===e&&t.clientWidth>n.clientWidth||"contain"===e&&t.clientWidth<n.clientWidth?(t.style.top="0",t.style.marginTop="0",o("x",t,i)):(t.style.width="100%",t.style.height="auto",t.style.left="0",t.style.marginLeft="0",o("y",t,i))))},i=function(t){if(void 0===t||t instanceof Event)t=document.querySelectorAll("[data-object-fit]");else if(t&&t.nodeName)t=[t];else{if("object"!=typeof t||!t.length||!t[0].nodeName)return!1;t=t}for(var e=0;e<t.length;e++)if(t[e].nodeName){var i=t[e].nodeName.toLowerCase();if("img"===i){if(n)continue;t[e].complete?l(t[e]):t[e].addEventListener("load",function(){l(this)})}else"video"===i?0<t[e].readyState?l(t[e]):t[e].addEventListener("loadedmetadata",function(){l(this)}):l(t[e])}return!0};"loading"===document.readyState?document.addEventListener("DOMContentLoaded",i):i(),window.addEventListener("resize",i),window.objectFitPolyfill=i}else window.objectFitPolyfill=function(){return!1}}}();
/*********/
/**
 * Copyright 2016 Google Inc. All Rights Reserved.
 *
 * Licensed under the W3C SOFTWARE AND DOCUMENT NOTICE AND LICENSE.
 *
 *  https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
 *
 */
(function() {
'use strict';

// Exit early if we're not running in a browser.
if (typeof window !== 'object') {
  return;
}

// Exit early if all IntersectionObserver and IntersectionObserverEntry
// features are natively supported.
if ('IntersectionObserver' in window &&
    'IntersectionObserverEntry' in window &&
    'intersectionRatio' in window.IntersectionObserverEntry.prototype) {

  // Minimal polyfill for Edge 15's lack of `isIntersecting`
  // See: https://github.com/w3c/IntersectionObserver/issues/211
  if (!('isIntersecting' in window.IntersectionObserverEntry.prototype)) {
    Object.defineProperty(window.IntersectionObserverEntry.prototype,
      'isIntersecting', {
      get: function () {
        return this.intersectionRatio > 0;
      }
    });
  }
  return;
}


/**
 * A local reference to the document.
 */
var document = window.document;


/**
 * An IntersectionObserver registry. This registry exists to hold a strong
 * reference to IntersectionObserver instances currently observing a target
 * element. Without this registry, instances without another reference may be
 * garbage collected.
 */
var registry = [];


/**
 * Creates the global IntersectionObserverEntry constructor.
 * https://w3c.github.io/IntersectionObserver/#intersection-observer-entry
 * @param {Object} entry A dictionary of instance properties.
 * @constructor
 */
function IntersectionObserverEntry(entry) {
  this.time = entry.time;
  this.target = entry.target;
  this.rootBounds = entry.rootBounds;
  this.boundingClientRect = entry.boundingClientRect;
  this.intersectionRect = entry.intersectionRect || getEmptyRect();
  this.isIntersecting = !!entry.intersectionRect;

  // Calculates the intersection ratio.
  var targetRect = this.boundingClientRect;
  var targetArea = targetRect.width * targetRect.height;
  var intersectionRect = this.intersectionRect;
  var intersectionArea = intersectionRect.width * intersectionRect.height;

  // Sets intersection ratio.
  if (targetArea) {
    // Round the intersection ratio to avoid floating point math issues:
    // https://github.com/w3c/IntersectionObserver/issues/324
    this.intersectionRatio = Number((intersectionArea / targetArea).toFixed(4));
  } else {
    // If area is zero and is intersecting, sets to 1, otherwise to 0
    this.intersectionRatio = this.isIntersecting ? 1 : 0;
  }
}


/**
 * Creates the global IntersectionObserver constructor.
 * https://w3c.github.io/IntersectionObserver/#intersection-observer-interface
 * @param {Function} callback The function to be invoked after intersection
 *     changes have queued. The function is not invoked if the queue has
 *     been emptied by calling the `takeRecords` method.
 * @param {Object=} opt_options Optional configuration options.
 * @constructor
 */
function IntersectionObserver(callback, opt_options) {

  var options = opt_options || {};

  if (typeof callback != 'function') {
    throw new Error('callback must be a function');
  }

  if (options.root && options.root.nodeType != 1) {
    throw new Error('root must be an Element');
  }

  // Binds and throttles `this._checkForIntersections`.
  this._checkForIntersections = throttle(
      this._checkForIntersections.bind(this), this.THROTTLE_TIMEOUT);

  // Private properties.
  this._callback = callback;
  this._observationTargets = [];
  this._queuedEntries = [];
  this._rootMarginValues = this._parseRootMargin(options.rootMargin);

  // Public properties.
  this.thresholds = this._initThresholds(options.threshold);
  this.root = options.root || null;
  this.rootMargin = this._rootMarginValues.map(function(margin) {
    return margin.value + margin.unit;
  }).join(' ');
}


/**
 * The minimum interval within which the document will be checked for
 * intersection changes.
 */
IntersectionObserver.prototype.THROTTLE_TIMEOUT = 100;


/**
 * The frequency in which the polyfill polls for intersection changes.
 * this can be updated on a per instance basis and must be set prior to
 * calling `observe` on the first target.
 */
IntersectionObserver.prototype.POLL_INTERVAL = null;

/**
 * Use a mutation observer on the root element
 * to detect intersection changes.
 */
IntersectionObserver.prototype.USE_MUTATION_OBSERVER = true;


/**
 * Starts observing a target element for intersection changes based on
 * the thresholds values.
 * @param {Element} target The DOM element to observe.
 */
IntersectionObserver.prototype.observe = function(target) {
  var isTargetAlreadyObserved = this._observationTargets.some(function(item) {
    return item.element == target;
  });

  if (isTargetAlreadyObserved) {
    return;
  }

  if (!(target && target.nodeType == 1)) {
    throw new Error('target must be an Element');
  }

  this._registerInstance();
  this._observationTargets.push({element: target, entry: null});
  this._monitorIntersections();
  this._checkForIntersections();
};


/**
 * Stops observing a target element for intersection changes.
 * @param {Element} target The DOM element to observe.
 */
IntersectionObserver.prototype.unobserve = function(target) {
  this._observationTargets =
      this._observationTargets.filter(function(item) {

    return item.element != target;
  });
  if (!this._observationTargets.length) {
    this._unmonitorIntersections();
    this._unregisterInstance();
  }
};


/**
 * Stops observing all target elements for intersection changes.
 */
IntersectionObserver.prototype.disconnect = function() {
  this._observationTargets = [];
  this._unmonitorIntersections();
  this._unregisterInstance();
};


/**
 * Returns any queue entries that have not yet been reported to the
 * callback and clears the queue. This can be used in conjunction with the
 * callback to obtain the absolute most up-to-date intersection information.
 * @return {Array} The currently queued entries.
 */
IntersectionObserver.prototype.takeRecords = function() {
  var records = this._queuedEntries.slice();
  this._queuedEntries = [];
  return records;
};


/**
 * Accepts the threshold value from the user configuration object and
 * returns a sorted array of unique threshold values. If a value is not
 * between 0 and 1 and error is thrown.
 * @private
 * @param {Array|number=} opt_threshold An optional threshold value or
 *     a list of threshold values, defaulting to [0].
 * @return {Array} A sorted list of unique and valid threshold values.
 */
IntersectionObserver.prototype._initThresholds = function(opt_threshold) {
  var threshold = opt_threshold || [0];
  if (!Array.isArray(threshold)) threshold = [threshold];

  return threshold.sort().filter(function(t, i, a) {
    if (typeof t != 'number' || isNaN(t) || t < 0 || t > 1) {
      throw new Error('threshold must be a number between 0 and 1 inclusively');
    }
    return t !== a[i - 1];
  });
};


/**
 * Accepts the rootMargin value from the user configuration object
 * and returns an array of the four margin values as an object containing
 * the value and unit properties. If any of the values are not properly
 * formatted or use a unit other than px or %, and error is thrown.
 * @private
 * @param {string=} opt_rootMargin An optional rootMargin value,
 *     defaulting to '0px'.
 * @return {Array<Object>} An array of margin objects with the keys
 *     value and unit.
 */
IntersectionObserver.prototype._parseRootMargin = function(opt_rootMargin) {
  var marginString = opt_rootMargin || '0px';
  var margins = marginString.split(/\s+/).map(function(margin) {
    var parts = /^(-?\d*\.?\d+)(px|%)$/.exec(margin);
    if (!parts) {
      throw new Error('rootMargin must be specified in pixels or percent');
    }
    return {value: parseFloat(parts[1]), unit: parts[2]};
  });

  // Handles shorthand.
  margins[1] = margins[1] || margins[0];
  margins[2] = margins[2] || margins[0];
  margins[3] = margins[3] || margins[1];

  return margins;
};


/**
 * Starts polling for intersection changes if the polling is not already
 * happening, and if the page's visibility state is visible.
 * @private
 */
IntersectionObserver.prototype._monitorIntersections = function() {
  if (!this._monitoringIntersections) {
    this._monitoringIntersections = true;

    // If a poll interval is set, use polling instead of listening to
    // resize and scroll events or DOM mutations.
    if (this.POLL_INTERVAL) {
      this._monitoringInterval = setInterval(
          this._checkForIntersections, this.POLL_INTERVAL);
    }
    else {
      addEvent(window, 'resize', this._checkForIntersections, true);
      addEvent(document, 'scroll', this._checkForIntersections, true);

      if (this.USE_MUTATION_OBSERVER && 'MutationObserver' in window) {
        this._domObserver = new MutationObserver(this._checkForIntersections);
        this._domObserver.observe(document, {
          attributes: true,
          childList: true,
          characterData: true,
          subtree: true
        });
      }
    }
  }
};


/**
 * Stops polling for intersection changes.
 * @private
 */
IntersectionObserver.prototype._unmonitorIntersections = function() {
  if (this._monitoringIntersections) {
    this._monitoringIntersections = false;

    clearInterval(this._monitoringInterval);
    this._monitoringInterval = null;

    removeEvent(window, 'resize', this._checkForIntersections, true);
    removeEvent(document, 'scroll', this._checkForIntersections, true);

    if (this._domObserver) {
      this._domObserver.disconnect();
      this._domObserver = null;
    }
  }
};


/**
 * Scans each observation target for intersection changes and adds them
 * to the internal entries queue. If new entries are found, it
 * schedules the callback to be invoked.
 * @private
 */
IntersectionObserver.prototype._checkForIntersections = function() {
  var rootIsInDom = this._rootIsInDom();
  var rootRect = rootIsInDom ? this._getRootRect() : getEmptyRect();

  this._observationTargets.forEach(function(item) {
    var target = item.element;
    var targetRect = getBoundingClientRect(target);
    var rootContainsTarget = this._rootContainsTarget(target);
    var oldEntry = item.entry;
    var intersectionRect = rootIsInDom && rootContainsTarget &&
        this._computeTargetAndRootIntersection(target, rootRect);

    var newEntry = item.entry = new IntersectionObserverEntry({
      time: now(),
      target: target,
      boundingClientRect: targetRect,
      rootBounds: rootRect,
      intersectionRect: intersectionRect
    });

    if (!oldEntry) {
      this._queuedEntries.push(newEntry);
    } else if (rootIsInDom && rootContainsTarget) {
      // If the new entry intersection ratio has crossed any of the
      // thresholds, add a new entry.
      if (this._hasCrossedThreshold(oldEntry, newEntry)) {
        this._queuedEntries.push(newEntry);
      }
    } else {
      // If the root is not in the DOM or target is not contained within
      // root but the previous entry for this target had an intersection,
      // add a new record indicating removal.
      if (oldEntry && oldEntry.isIntersecting) {
        this._queuedEntries.push(newEntry);
      }
    }
  }, this);

  if (this._queuedEntries.length) {
    this._callback(this.takeRecords(), this);
  }
};


/**
 * Accepts a target and root rect computes the intersection between then
 * following the algorithm in the spec.
 * TODO(philipwalton): at this time clip-path is not considered.
 * https://w3c.github.io/IntersectionObserver/#calculate-intersection-rect-algo
 * @param {Element} target The target DOM element
 * @param {Object} rootRect The bounding rect of the root after being
 *     expanded by the rootMargin value.
 * @return {?Object} The final intersection rect object or undefined if no
 *     intersection is found.
 * @private
 */
IntersectionObserver.prototype._computeTargetAndRootIntersection =
    function(target, rootRect) {

  // If the element isn't displayed, an intersection can't happen.
  if (window.getComputedStyle(target).display == 'none') return;

  var targetRect = getBoundingClientRect(target);
  var intersectionRect = targetRect;
  var parent = getParentNode(target);
  var atRoot = false;

  while (!atRoot) {
    var parentRect = null;
    var parentComputedStyle = parent.nodeType == 1 ?
        window.getComputedStyle(parent) : {};

    // If the parent isn't displayed, an intersection can't happen.
    if (parentComputedStyle.display == 'none') return;

    if (parent == this.root || parent == document) {
      atRoot = true;
      parentRect = rootRect;
    } else {
      // If the element has a non-visible overflow, and it's not the <body>
      // or <html> element, update the intersection rect.
      // Note: <body> and <html> cannot be clipped to a rect that's not also
      // the document rect, so no need to compute a new intersection.
      if (parent != document.body &&
          parent != document.documentElement &&
          parentComputedStyle.overflow != 'visible') {
        parentRect = getBoundingClientRect(parent);
      }
    }

    // If either of the above conditionals set a new parentRect,
    // calculate new intersection data.
    if (parentRect) {
      intersectionRect = computeRectIntersection(parentRect, intersectionRect);

      if (!intersectionRect) break;
    }
    parent = getParentNode(parent);
  }
  return intersectionRect;
};


/**
 * Returns the root rect after being expanded by the rootMargin value.
 * @return {Object} The expanded root rect.
 * @private
 */
IntersectionObserver.prototype._getRootRect = function() {
  var rootRect;
  if (this.root) {
    rootRect = getBoundingClientRect(this.root);
  } else {
    // Use <html>/<body> instead of window since scroll bars affect size.
    var html = document.documentElement;
    var body = document.body;
    rootRect = {
      top: 0,
      left: 0,
      right: html.clientWidth || body.clientWidth,
      width: html.clientWidth || body.clientWidth,
      bottom: html.clientHeight || body.clientHeight,
      height: html.clientHeight || body.clientHeight
    };
  }
  return this._expandRectByRootMargin(rootRect);
};


/**
 * Accepts a rect and expands it by the rootMargin value.
 * @param {Object} rect The rect object to expand.
 * @return {Object} The expanded rect.
 * @private
 */
IntersectionObserver.prototype._expandRectByRootMargin = function(rect) {
  var margins = this._rootMarginValues.map(function(margin, i) {
    return margin.unit == 'px' ? margin.value :
        margin.value * (i % 2 ? rect.width : rect.height) / 100;
  });
  var newRect = {
    top: rect.top - margins[0],
    right: rect.right + margins[1],
    bottom: rect.bottom + margins[2],
    left: rect.left - margins[3]
  };
  newRect.width = newRect.right - newRect.left;
  newRect.height = newRect.bottom - newRect.top;

  return newRect;
};


/**
 * Accepts an old and new entry and returns true if at least one of the
 * threshold values has been crossed.
 * @param {?IntersectionObserverEntry} oldEntry The previous entry for a
 *    particular target element or null if no previous entry exists.
 * @param {IntersectionObserverEntry} newEntry The current entry for a
 *    particular target element.
 * @return {boolean} Returns true if a any threshold has been crossed.
 * @private
 */
IntersectionObserver.prototype._hasCrossedThreshold =
    function(oldEntry, newEntry) {

  // To make comparing easier, an entry that has a ratio of 0
  // but does not actually intersect is given a value of -1
  var oldRatio = oldEntry && oldEntry.isIntersecting ?
      oldEntry.intersectionRatio || 0 : -1;
  var newRatio = newEntry.isIntersecting ?
      newEntry.intersectionRatio || 0 : -1;

  // Ignore unchanged ratios
  if (oldRatio === newRatio) return;

  for (var i = 0; i < this.thresholds.length; i++) {
    var threshold = this.thresholds[i];

    // Return true if an entry matches a threshold or if the new ratio
    // and the old ratio are on the opposite sides of a threshold.
    if (threshold == oldRatio || threshold == newRatio ||
        threshold < oldRatio !== threshold < newRatio) {
      return true;
    }
  }
};


/**
 * Returns whether or not the root element is an element and is in the DOM.
 * @return {boolean} True if the root element is an element and is in the DOM.
 * @private
 */
IntersectionObserver.prototype._rootIsInDom = function() {
  return !this.root || containsDeep(document, this.root);
};


/**
 * Returns whether or not the target element is a child of root.
 * @param {Element} target The target element to check.
 * @return {boolean} True if the target element is a child of root.
 * @private
 */
IntersectionObserver.prototype._rootContainsTarget = function(target) {
  return containsDeep(this.root || document, target);
};


/**
 * Adds the instance to the global IntersectionObserver registry if it isn't
 * already present.
 * @private
 */
IntersectionObserver.prototype._registerInstance = function() {
  if (registry.indexOf(this) < 0) {
    registry.push(this);
  }
};


/**
 * Removes the instance from the global IntersectionObserver registry.
 * @private
 */
IntersectionObserver.prototype._unregisterInstance = function() {
  var index = registry.indexOf(this);
  if (index != -1) registry.splice(index, 1);
};


/**
 * Returns the result of the performance.now() method or null in browsers
 * that don't support the API.
 * @return {number} The elapsed time since the page was requested.
 */
function now() {
  return window.performance && performance.now && performance.now();
}


/**
 * Throttles a function and delays its execution, so it's only called at most
 * once within a given time period.
 * @param {Function} fn The function to throttle.
 * @param {number} timeout The amount of time that must pass before the
 *     function can be called again.
 * @return {Function} The throttled function.
 */
function throttle(fn, timeout) {
  var timer = null;
  return function () {
    if (!timer) {
      timer = setTimeout(function() {
        fn();
        timer = null;
      }, timeout);
    }
  };
}


/**
 * Adds an event handler to a DOM node ensuring cross-browser compatibility.
 * @param {Node} node The DOM node to add the event handler to.
 * @param {string} event The event name.
 * @param {Function} fn The event handler to add.
 * @param {boolean} opt_useCapture Optionally adds the even to the capture
 *     phase. Note: this only works in modern browsers.
 */
function addEvent(node, event, fn, opt_useCapture) {
  if (typeof node.addEventListener == 'function') {
    node.addEventListener(event, fn, opt_useCapture || false);
  }
  else if (typeof node.attachEvent == 'function') {
    node.attachEvent('on' + event, fn);
  }
}


/**
 * Removes a previously added event handler from a DOM node.
 * @param {Node} node The DOM node to remove the event handler from.
 * @param {string} event The event name.
 * @param {Function} fn The event handler to remove.
 * @param {boolean} opt_useCapture If the event handler was added with this
 *     flag set to true, it should be set to true here in order to remove it.
 */
function removeEvent(node, event, fn, opt_useCapture) {
  if (typeof node.removeEventListener == 'function') {
    node.removeEventListener(event, fn, opt_useCapture || false);
  }
  else if (typeof node.detatchEvent == 'function') {
    node.detatchEvent('on' + event, fn);
  }
}


/**
 * Returns the intersection between two rect objects.
 * @param {Object} rect1 The first rect.
 * @param {Object} rect2 The second rect.
 * @return {?Object} The intersection rect or undefined if no intersection
 *     is found.
 */
function computeRectIntersection(rect1, rect2) {
  var top = Math.max(rect1.top, rect2.top);
  var bottom = Math.min(rect1.bottom, rect2.bottom);
  var left = Math.max(rect1.left, rect2.left);
  var right = Math.min(rect1.right, rect2.right);
  var width = right - left;
  var height = bottom - top;

  return (width >= 0 && height >= 0) && {
    top: top,
    bottom: bottom,
    left: left,
    right: right,
    width: width,
    height: height
  };
}


/**
 * Shims the native getBoundingClientRect for compatibility with older IE.
 * @param {Element} el The element whose bounding rect to get.
 * @return {Object} The (possibly shimmed) rect of the element.
 */
function getBoundingClientRect(el) {
  var rect;

  try {
    rect = el.getBoundingClientRect();
  } catch (err) {
    // Ignore Windows 7 IE11 "Unspecified error"
    // https://github.com/w3c/IntersectionObserver/pull/205
  }

  if (!rect) return getEmptyRect();

  // Older IE
  if (!(rect.width && rect.height)) {
    rect = {
      top: rect.top,
      right: rect.right,
      bottom: rect.bottom,
      left: rect.left,
      width: rect.right - rect.left,
      height: rect.bottom - rect.top
    };
  }
  return rect;
}


/**
 * Returns an empty rect object. An empty rect is returned when an element
 * is not in the DOM.
 * @return {Object} The empty rect.
 */
function getEmptyRect() {
  return {
    top: 0,
    bottom: 0,
    left: 0,
    right: 0,
    width: 0,
    height: 0
  };
}

/**
 * Checks to see if a parent element contains a child element (including inside
 * shadow DOM).
 * @param {Node} parent The parent element.
 * @param {Node} child The child element.
 * @return {boolean} True if the parent node contains the child node.
 */
function containsDeep(parent, child) {
  var node = child;
  while (node) {
    if (node == parent) return true;

    node = getParentNode(node);
  }
  return false;
}


/**
 * Gets the parent node of an element or its host element if the parent node
 * is a shadow root.
 * @param {Node} node The node whose parent to get.
 * @return {Node|null} The parent node or null if no parent exists.
 */
function getParentNode(node) {
  var parent = node.parentNode;

  if (parent && parent.nodeType == 11 && parent.host) {
    // If the parent is a shadow root, return the host element.
    return parent.host;
  }

  if (parent && parent.assignedSlot) {
    // If the parent is distributed in a <slot>, return the parent of a slot.
    return parent.assignedSlot.parentNode;
  }

  return parent;
}


// Exposes the constructors globally.
window.IntersectionObserver = IntersectionObserver;
window.IntersectionObserverEntry = IntersectionObserverEntry;

}());

/*********/
!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t():"function"==typeof define&&define.amd?define(t):t()}(0,function(){"use strict";function e(e){var t=this.constructor;return this.then(function(n){return t.resolve(e()).then(function(){return n})},function(n){return t.resolve(e()).then(function(){return t.reject(n)})})}function t(e){return new this(function(t,n){function o(e,n){if(n&&("object"==typeof n||"function"==typeof n)){var f=n.then;if("function"==typeof f)return void f.call(n,function(t){o(e,t)},function(n){r[e]={status:"rejected",reason:n},0==--i&&t(r)})}r[e]={status:"fulfilled",value:n},0==--i&&t(r)}if(!e||"undefined"==typeof e.length)return n(new TypeError(typeof e+" "+e+" is not iterable(cannot read property Symbol(Symbol.iterator))"));var r=Array.prototype.slice.call(e);if(0===r.length)return t([]);for(var i=r.length,f=0;r.length>f;f++)o(f,r[f])})}function n(e){return!(!e||"undefined"==typeof e.length)}function o(){}function r(e){if(!(this instanceof r))throw new TypeError("Promises must be constructed via new");if("function"!=typeof e)throw new TypeError("not a function");this._state=0,this._handled=!1,this._value=undefined,this._deferreds=[],l(e,this)}function i(e,t){for(;3===e._state;)e=e._value;0!==e._state?(e._handled=!0,r._immediateFn(function(){var n=1===e._state?t.onFulfilled:t.onRejected;if(null!==n){var o;try{o=n(e._value)}catch(r){return void u(t.promise,r)}f(t.promise,o)}else(1===e._state?f:u)(t.promise,e._value)})):e._deferreds.push(t)}function f(e,t){try{if(t===e)throw new TypeError("A promise cannot be resolved with itself.");if(t&&("object"==typeof t||"function"==typeof t)){var n=t.then;if(t instanceof r)return e._state=3,e._value=t,void c(e);if("function"==typeof n)return void l(function(e,t){return function(){e.apply(t,arguments)}}(n,t),e)}e._state=1,e._value=t,c(e)}catch(o){u(e,o)}}function u(e,t){e._state=2,e._value=t,c(e)}function c(e){2===e._state&&0===e._deferreds.length&&r._immediateFn(function(){e._handled||r._unhandledRejectionFn(e._value)});for(var t=0,n=e._deferreds.length;n>t;t++)i(e,e._deferreds[t]);e._deferreds=null}function l(e,t){var n=!1;try{e(function(e){n||(n=!0,f(t,e))},function(e){n||(n=!0,u(t,e))})}catch(o){if(n)return;n=!0,u(t,o)}}var a=setTimeout;r.prototype["catch"]=function(e){return this.then(null,e)},r.prototype.then=function(e,t){var n=new this.constructor(o);return i(this,new function(e,t,n){this.onFulfilled="function"==typeof e?e:null,this.onRejected="function"==typeof t?t:null,this.promise=n}(e,t,n)),n},r.prototype["finally"]=e,r.all=function(e){return new r(function(t,o){function r(e,n){try{if(n&&("object"==typeof n||"function"==typeof n)){var u=n.then;if("function"==typeof u)return void u.call(n,function(t){r(e,t)},o)}i[e]=n,0==--f&&t(i)}catch(c){o(c)}}if(!n(e))return o(new TypeError("Promise.all accepts an array"));var i=Array.prototype.slice.call(e);if(0===i.length)return t([]);for(var f=i.length,u=0;i.length>u;u++)r(u,i[u])})},r.allSettled=t,r.resolve=function(e){return e&&"object"==typeof e&&e.constructor===r?e:new r(function(t){t(e)})},r.reject=function(e){return new r(function(t,n){n(e)})},r.race=function(e){return new r(function(t,o){if(!n(e))return o(new TypeError("Promise.race accepts an array"));for(var i=0,f=e.length;f>i;i++)r.resolve(e[i]).then(t,o)})},r._immediateFn="function"==typeof setImmediate&&function(e){setImmediate(e)}||function(e){a(e,0)},r._unhandledRejectionFn=function(e){void 0!==console&&console&&console.warn("Possible Unhandled Promise Rejection:",e)};var s=function(){if("undefined"!=typeof self)return self;if("undefined"!=typeof window)return window;if("undefined"!=typeof global)return global;throw Error("unable to locate global object")}();"function"!=typeof s.Promise?s.Promise=r:(s.Promise.prototype["finally"]||(s.Promise.prototype["finally"]=e),s.Promise.allSettled||(s.Promise.allSettled=t))});

/*********/
/*!
 * Platform.js v1.3.6
 * Copyright 2014-2020 Benjamin Tan
 * Copyright 2011-2013 John-David Dalton
 * Available under MIT license
 */
;(function() {
  'use strict';

  /** Used to determine if values are of the language type `Object`. */
  var objectTypes = {
    'function': true,
    'object': true
  };

  /** Used as a reference to the global object. */
  var root = (objectTypes[typeof window] && window) || this;

  /** Backup possible global object. */
  var oldRoot = root;

  /** Detect free variable `exports`. */
  var freeExports = objectTypes[typeof exports] && exports;

  /** Detect free variable `module`. */
  var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;

  /** Detect free variable `global` from Node.js or Browserified code and use it as `root`. */
  var freeGlobal = freeExports && freeModule && typeof global == 'object' && global;
  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) {
    root = freeGlobal;
  }

  /**
   * Used as the maximum length of an array-like object.
   * See the [ES6 spec](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
   * for more details.
   */
  var maxSafeInteger = Math.pow(2, 53) - 1;

  /** Regular expression to detect Opera. */
  var reOpera = /\bOpera/;

  /** Possible global object. */
  var thisBinding = this;

  /** Used for native method references. */
  var objectProto = Object.prototype;

  /** Used to check for own properties of an object. */
  var hasOwnProperty = objectProto.hasOwnProperty;

  /** Used to resolve the internal `[[Class]]` of values. */
  var toString = objectProto.toString;

  /*--------------------------------------------------------------------------*/

  /**
   * Capitalizes a string value.
   *
   * @private
   * @param {string} string The string to capitalize.
   * @returns {string} The capitalized string.
   */
  function capitalize(string) {
    string = String(string);
    return string.charAt(0).toUpperCase() + string.slice(1);
  }

  /**
   * A utility function to clean up the OS name.
   *
   * @private
   * @param {string} os The OS name to clean up.
   * @param {string} [pattern] A `RegExp` pattern matching the OS name.
   * @param {string} [label] A label for the OS.
   */
  function cleanupOS(os, pattern, label) {
    // Platform tokens are defined at:
    // http://msdn.microsoft.com/en-us/library/ms537503(VS.85).aspx
    // http://web.archive.org/web/20081122053950/http://msdn.microsoft.com/en-us/library/ms537503(VS.85).aspx
    var data = {
      '10.0': '10',
      '6.4':  '10 Technical Preview',
      '6.3':  '8.1',
      '6.2':  '8',
      '6.1':  'Server 2008 R2 / 7',
      '6.0':  'Server 2008 / Vista',
      '5.2':  'Server 2003 / XP 64-bit',
      '5.1':  'XP',
      '5.01': '2000 SP1',
      '5.0':  '2000',
      '4.0':  'NT',
      '4.90': 'ME'
    };
    // Detect Windows version from platform tokens.
    if (pattern && label && /^Win/i.test(os) && !/^Windows Phone /i.test(os) &&
        (data = data[/[\d.]+$/.exec(os)])) {
      os = 'Windows ' + data;
    }
    // Correct character case and cleanup string.
    os = String(os);

    if (pattern && label) {
      os = os.replace(RegExp(pattern, 'i'), label);
    }

    os = format(
      os.replace(/ ce$/i, ' CE')
        .replace(/\bhpw/i, 'web')
        .replace(/\bMacintosh\b/, 'Mac OS')
        .replace(/_PowerPC\b/i, ' OS')
        .replace(/\b(OS X) [^ \d]+/i, '$1')
        .replace(/\bMac (OS X)\b/, '$1')
        .replace(/\/(\d)/, ' $1')
        .replace(/_/g, '.')
        .replace(/(?: BePC|[ .]*fc[ \d.]+)$/i, '')
        .replace(/\bx86\.64\b/gi, 'x86_64')
        .replace(/\b(Windows Phone) OS\b/, '$1')
        .replace(/\b(Chrome OS \w+) [\d.]+\b/, '$1')
        .split(' on ')[0]
    );

    return os;
  }

  /**
   * An iteration utility for arrays and objects.
   *
   * @private
   * @param {Array|Object} object The object to iterate over.
   * @param {Function} callback The function called per iteration.
   */
  function each(object, callback) {
    var index = -1,
        length = object ? object.length : 0;

    if (typeof length == 'number' && length > -1 && length <= maxSafeInteger) {
      while (++index < length) {
        callback(object[index], index, object);
      }
    } else {
      forOwn(object, callback);
    }
  }

  /**
   * Trim and conditionally capitalize string values.
   *
   * @private
   * @param {string} string The string to format.
   * @returns {string} The formatted string.
   */
  function format(string) {
    string = trim(string);
    return /^(?:webOS|i(?:OS|P))/.test(string)
      ? string
      : capitalize(string);
  }

  /**
   * Iterates over an object's own properties, executing the `callback` for each.
   *
   * @private
   * @param {Object} object The object to iterate over.
   * @param {Function} callback The function executed per own property.
   */
  function forOwn(object, callback) {
    for (var key in object) {
      if (hasOwnProperty.call(object, key)) {
        callback(object[key], key, object);
      }
    }
  }

  /**
   * Gets the internal `[[Class]]` of a value.
   *
   * @private
   * @param {*} value The value.
   * @returns {string} The `[[Class]]`.
   */
  function getClassOf(value) {
    return value == null
      ? capitalize(value)
      : toString.call(value).slice(8, -1);
  }

  /**
   * Host objects can return type values that are different from their actual
   * data type. The objects we are concerned with usually return non-primitive
   * types of "object", "function", or "unknown".
   *
   * @private
   * @param {*} object The owner of the property.
   * @param {string} property The property to check.
   * @returns {boolean} Returns `true` if the property value is a non-primitive, else `false`.
   */
  function isHostType(object, property) {
    var type = object != null ? typeof object[property] : 'number';
    return !/^(?:boolean|number|string|undefined)$/.test(type) &&
      (type == 'object' ? !!object[property] : true);
  }

  /**
   * Prepares a string for use in a `RegExp` by making hyphens and spaces optional.
   *
   * @private
   * @param {string} string The string to qualify.
   * @returns {string} The qualified string.
   */
  function qualify(string) {
    return String(string).replace(/([ -])(?!$)/g, '$1?');
  }

  /**
   * A bare-bones `Array#reduce` like utility function.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} callback The function called per iteration.
   * @returns {*} The accumulated result.
   */
  function reduce(array, callback) {
    var accumulator = null;
    each(array, function(value, index) {
      accumulator = callback(accumulator, value, index, array);
    });
    return accumulator;
  }

  /**
   * Removes leading and trailing whitespace from a string.
   *
   * @private
   * @param {string} string The string to trim.
   * @returns {string} The trimmed string.
   */
  function trim(string) {
    return String(string).replace(/^ +| +$/g, '');
  }

  /*--------------------------------------------------------------------------*/

  /**
   * Creates a new platform object.
   *
   * @memberOf platform
   * @param {Object|string} [ua=navigator.userAgent] The user agent string or
   *  context object.
   * @returns {Object} A platform object.
   */
  function parse(ua) {

    /** The environment context object. */
    var context = root;

    /** Used to flag when a custom context is provided. */
    var isCustomContext = ua && typeof ua == 'object' && getClassOf(ua) != 'String';

    // Juggle arguments.
    if (isCustomContext) {
      context = ua;
      ua = null;
    }

    /** Browser navigator object. */
    var nav = context.navigator || {};

    /** Browser user agent string. */
    var userAgent = nav.userAgent || '';

    ua || (ua = userAgent);

    /** Used to flag when `thisBinding` is the [ModuleScope]. */
    var isModuleScope = isCustomContext || thisBinding == oldRoot;

    /** Used to detect if browser is like Chrome. */
    var likeChrome = isCustomContext
      ? !!nav.likeChrome
      : /\bChrome\b/.test(ua) && !/internal|\n/i.test(toString.toString());

    /** Internal `[[Class]]` value shortcuts. */
    var objectClass = 'Object',
        airRuntimeClass = isCustomContext ? objectClass : 'ScriptBridgingProxyObject',
        enviroClass = isCustomContext ? objectClass : 'Environment',
        javaClass = (isCustomContext && context.java) ? 'JavaPackage' : getClassOf(context.java),
        phantomClass = isCustomContext ? objectClass : 'RuntimeObject';

    /** Detect Java environments. */
    var java = /\bJava/.test(javaClass) && context.java;

    /** Detect Rhino. */
    var rhino = java && getClassOf(context.environment) == enviroClass;

    /** A character to represent alpha. */
    var alpha = java ? 'a' : '\u03b1';

    /** A character to represent beta. */
    var beta = java ? 'b' : '\u03b2';

    /** Browser document object. */
    var doc = context.document || {};

    /**
     * Detect Opera browser (Presto-based).
     * http://www.howtocreate.co.uk/operaStuff/operaObject.html
     * http://dev.opera.com/articles/view/opera-mini-web-content-authoring-guidelines/#operamini
     */
    var opera = context.operamini || context.opera;

    /** Opera `[[Class]]`. */
    var operaClass = reOpera.test(operaClass = (isCustomContext && opera) ? opera['[[Class]]'] : getClassOf(opera))
      ? operaClass
      : (opera = null);

    /*------------------------------------------------------------------------*/

    /** Temporary variable used over the script's lifetime. */
    var data;

    /** The CPU architecture. */
    var arch = ua;

    /** Platform description array. */
    var description = [];

    /** Platform alpha/beta indicator. */
    var prerelease = null;

    /** A flag to indicate that environment features should be used to resolve the platform. */
    var useFeatures = ua == userAgent;

    /** The browser/environment version. */
    var version = useFeatures && opera && typeof opera.version == 'function' && opera.version();

    /** A flag to indicate if the OS ends with "/ Version" */
    var isSpecialCasedOS;

    /* Detectable layout engines (order is important). */
    var layout = getLayout([
      { 'label': 'EdgeHTML', 'pattern': 'Edge' },
      'Trident',
      { 'label': 'WebKit', 'pattern': 'AppleWebKit' },
      'iCab',
      'Presto',
      'NetFront',
      'Tasman',
      'KHTML',
      'Gecko'
    ]);

    /* Detectable browser names (order is important). */
    var name = getName([
      'Adobe AIR',
      'Arora',
      'Avant Browser',
      'Breach',
      'Camino',
      'Electron',
      'Epiphany',
      'Fennec',
      'Flock',
      'Galeon',
      'GreenBrowser',
      'iCab',
      'Iceweasel',
      'K-Meleon',
      'Konqueror',
      'Lunascape',
      'Maxthon',
      { 'label': 'Microsoft Edge', 'pattern': '(?:Edge|Edg|EdgA|EdgiOS)' },
      'Midori',
      'Nook Browser',
      'PaleMoon',
      'PhantomJS',
      'Raven',
      'Rekonq',
      'RockMelt',
      { 'label': 'Samsung Internet', 'pattern': 'SamsungBrowser' },
      'SeaMonkey',
      { 'label': 'Silk', 'pattern': '(?:Cloud9|Silk-Accelerated)' },
      'Sleipnir',
      'SlimBrowser',
      { 'label': 'SRWare Iron', 'pattern': 'Iron' },
      'Sunrise',
      'Swiftfox',
      'Vivaldi',
      'Waterfox',
      'WebPositive',
      { 'label': 'Yandex Browser', 'pattern': 'YaBrowser' },
      { 'label': 'UC Browser', 'pattern': 'UCBrowser' },
      'Opera Mini',
      { 'label': 'Opera Mini', 'pattern': 'OPiOS' },
      'Opera',
      { 'label': 'Opera', 'pattern': 'OPR' },
      'Chromium',
      'Chrome',
      { 'label': 'Chrome', 'pattern': '(?:HeadlessChrome)' },
      { 'label': 'Chrome Mobile', 'pattern': '(?:CriOS|CrMo)' },
      { 'label': 'Firefox', 'pattern': '(?:Firefox|Minefield)' },
      { 'label': 'Firefox for iOS', 'pattern': 'FxiOS' },
      { 'label': 'IE', 'pattern': 'IEMobile' },
      { 'label': 'IE', 'pattern': 'MSIE' },
      'Safari'
    ]);

    /* Detectable products (order is important). */
    var product = getProduct([
      { 'label': 'BlackBerry', 'pattern': 'BB10' },
      'BlackBerry',
      { 'label': 'Galaxy S', 'pattern': 'GT-I9000' },
      { 'label': 'Galaxy S2', 'pattern': 'GT-I9100' },
      { 'label': 'Galaxy S3', 'pattern': 'GT-I9300' },
      { 'label': 'Galaxy S4', 'pattern': 'GT-I9500' },
      { 'label': 'Galaxy S5', 'pattern': 'SM-G900' },
      { 'label': 'Galaxy S6', 'pattern': 'SM-G920' },
      { 'label': 'Galaxy S6 Edge', 'pattern': 'SM-G925' },
      { 'label': 'Galaxy S7', 'pattern': 'SM-G930' },
      { 'label': 'Galaxy S7 Edge', 'pattern': 'SM-G935' },
      'Google TV',
      'Lumia',
      'iPad',
      'iPod',
      'iPhone',
      'Kindle',
      { 'label': 'Kindle Fire', 'pattern': '(?:Cloud9|Silk-Accelerated)' },
      'Nexus',
      'Nook',
      'PlayBook',
      'PlayStation Vita',
      'PlayStation',
      'TouchPad',
      'Transformer',
      { 'label': 'Wii U', 'pattern': 'WiiU' },
      'Wii',
      'Xbox One',
      { 'label': 'Xbox 360', 'pattern': 'Xbox' },
      'Xoom'
    ]);

    /* Detectable manufacturers. */
    var manufacturer = getManufacturer({
      'Apple': { 'iPad': 1, 'iPhone': 1, 'iPod': 1 },
      'Alcatel': {},
      'Archos': {},
      'Amazon': { 'Kindle': 1, 'Kindle Fire': 1 },
      'Asus': { 'Transformer': 1 },
      'Barnes & Noble': { 'Nook': 1 },
      'BlackBerry': { 'PlayBook': 1 },
      'Google': { 'Google TV': 1, 'Nexus': 1 },
      'HP': { 'TouchPad': 1 },
      'HTC': {},
      'Huawei': {},
      'Lenovo': {},
      'LG': {},
      'Microsoft': { 'Xbox': 1, 'Xbox One': 1 },
      'Motorola': { 'Xoom': 1 },
      'Nintendo': { 'Wii U': 1,  'Wii': 1 },
      'Nokia': { 'Lumia': 1 },
      'Oppo': {},
      'Samsung': { 'Galaxy S': 1, 'Galaxy S2': 1, 'Galaxy S3': 1, 'Galaxy S4': 1 },
      'Sony': { 'PlayStation': 1, 'PlayStation Vita': 1 },
      'Xiaomi': { 'Mi': 1, 'Redmi': 1 }
    });

    /* Detectable operating systems (order is important). */
    var os = getOS([
      'Windows Phone',
      'KaiOS',
      'Android',
      'CentOS',
      { 'label': 'Chrome OS', 'pattern': 'CrOS' },
      'Debian',
      { 'label': 'DragonFly BSD', 'pattern': 'DragonFly' },
      'Fedora',
      'FreeBSD',
      'Gentoo',
      'Haiku',
      'Kubuntu',
      'Linux Mint',
      'OpenBSD',
      'Red Hat',
      'SuSE',
      'Ubuntu',
      'Xubuntu',
      'Cygwin',
      'Symbian OS',
      'hpwOS',
      'webOS ',
      'webOS',
      'Tablet OS',
      'Tizen',
      'Linux',
      'Mac OS X',
      'Macintosh',
      'Mac',
      'Windows 98;',
      'Windows '
    ]);

    /*------------------------------------------------------------------------*/

    /**
     * Picks the layout engine from an array of guesses.
     *
     * @private
     * @param {Array} guesses An array of guesses.
     * @returns {null|string} The detected layout engine.
     */
    function getLayout(guesses) {
      return reduce(guesses, function(result, guess) {
        return result || RegExp('\\b' + (
          guess.pattern || qualify(guess)
        ) + '\\b', 'i').exec(ua) && (guess.label || guess);
      });
    }

    /**
     * Picks the manufacturer from an array of guesses.
     *
     * @private
     * @param {Array} guesses An object of guesses.
     * @returns {null|string} The detected manufacturer.
     */
    function getManufacturer(guesses) {
      return reduce(guesses, function(result, value, key) {
        // Lookup the manufacturer by product or scan the UA for the manufacturer.
        return result || (
          value[product] ||
          value[/^[a-z]+(?: +[a-z]+\b)*/i.exec(product)] ||
          RegExp('\\b' + qualify(key) + '(?:\\b|\\w*\\d)', 'i').exec(ua)
        ) && key;
      });
    }

    /**
     * Picks the browser name from an array of guesses.
     *
     * @private
     * @param {Array} guesses An array of guesses.
     * @returns {null|string} The detected browser name.
     */
    function getName(guesses) {
      return reduce(guesses, function(result, guess) {
        return result || RegExp('\\b' + (
          guess.pattern || qualify(guess)
        ) + '\\b', 'i').exec(ua) && (guess.label || guess);
      });
    }

    /**
     * Picks the OS name from an array of guesses.
     *
     * @private
     * @param {Array} guesses An array of guesses.
     * @returns {null|string} The detected OS name.
     */
    function getOS(guesses) {
      return reduce(guesses, function(result, guess) {
        var pattern = guess.pattern || qualify(guess);
        if (!result && (result =
              RegExp('\\b' + pattern + '(?:/[\\d.]+|[ \\w.]*)', 'i').exec(ua)
            )) {
          result = cleanupOS(result, pattern, guess.label || guess);
        }
        return result;
      });
    }

    /**
     * Picks the product name from an array of guesses.
     *
     * @private
     * @param {Array} guesses An array of guesses.
     * @returns {null|string} The detected product name.
     */
    function getProduct(guesses) {
      return reduce(guesses, function(result, guess) {
        var pattern = guess.pattern || qualify(guess);
        if (!result && (result =
              RegExp('\\b' + pattern + ' *\\d+[.\\w_]*', 'i').exec(ua) ||
              RegExp('\\b' + pattern + ' *\\w+-[\\w]*', 'i').exec(ua) ||
              RegExp('\\b' + pattern + '(?:; *(?:[a-z]+[_-])?[a-z]+\\d+|[^ ();-]*)', 'i').exec(ua)
            )) {
          // Split by forward slash and append product version if needed.
          if ((result = String((guess.label && !RegExp(pattern, 'i').test(guess.label)) ? guess.label : result).split('/'))[1] && !/[\d.]+/.test(result[0])) {
            result[0] += ' ' + result[1];
          }
          // Correct character case and cleanup string.
          guess = guess.label || guess;
          result = format(result[0]
            .replace(RegExp(pattern, 'i'), guess)
            .replace(RegExp('; *(?:' + guess + '[_-])?', 'i'), ' ')
            .replace(RegExp('(' + guess + ')[-_.]?(\\w)', 'i'), '$1 $2'));
        }
        return result;
      });
    }

    /**
     * Resolves the version using an array of UA patterns.
     *
     * @private
     * @param {Array} patterns An array of UA patterns.
     * @returns {null|string} The detected version.
     */
    function getVersion(patterns) {
      return reduce(patterns, function(result, pattern) {
        return result || (RegExp(pattern +
          '(?:-[\\d.]+/|(?: for [\\w-]+)?[ /-])([\\d.]+[^ ();/_-]*)', 'i').exec(ua) || 0)[1] || null;
      });
    }

    /**
     * Returns `platform.description` when the platform object is coerced to a string.
     *
     * @name toString
     * @memberOf platform
     * @returns {string} Returns `platform.description` if available, else an empty string.
     */
    function toStringPlatform() {
      return this.description || '';
    }

    /*------------------------------------------------------------------------*/

    // Convert layout to an array so we can add extra details.
    layout && (layout = [layout]);

    // Detect Android products.
    // Browsers on Android devices typically provide their product IDS after "Android;"
    // up to "Build" or ") AppleWebKit".
    // Example:
    // "Mozilla/5.0 (Linux; Android 8.1.0; Moto G (5) Plus) AppleWebKit/537.36
    // (KHTML, like Gecko) Chrome/70.0.3538.80 Mobile Safari/537.36"
    if (/\bAndroid\b/.test(os) && !product &&
        (data = /\bAndroid[^;]*;(.*?)(?:Build|\) AppleWebKit)\b/i.exec(ua))) {
      product = trim(data[1])
        // Replace any language codes (eg. "en-US").
        .replace(/^[a-z]{2}-[a-z]{2};\s*/i, '')
        || null;
    }
    // Detect product names that contain their manufacturer's name.
    if (manufacturer && !product) {
      product = getProduct([manufacturer]);
    } else if (manufacturer && product) {
      product = product
        .replace(RegExp('^(' + qualify(manufacturer) + ')[-_.\\s]', 'i'), manufacturer + ' ')
        .replace(RegExp('^(' + qualify(manufacturer) + ')[-_.]?(\\w)', 'i'), manufacturer + ' $2');
    }
    // Clean up Google TV.
    if ((data = /\bGoogle TV\b/.exec(product))) {
      product = data[0];
    }
    // Detect simulators.
    if (/\bSimulator\b/i.test(ua)) {
      product = (product ? product + ' ' : '') + 'Simulator';
    }
    // Detect Opera Mini 8+ running in Turbo/Uncompressed mode on iOS.
    if (name == 'Opera Mini' && /\bOPiOS\b/.test(ua)) {
      description.push('running in Turbo/Uncompressed mode');
    }
    // Detect IE Mobile 11.
    if (name == 'IE' && /\blike iPhone OS\b/.test(ua)) {
      data = parse(ua.replace(/like iPhone OS/, ''));
      manufacturer = data.manufacturer;
      product = data.product;
    }
    // Detect iOS.
    else if (/^iP/.test(product)) {
      name || (name = 'Safari');
      os = 'iOS' + ((data = / OS ([\d_]+)/i.exec(ua))
        ? ' ' + data[1].replace(/_/g, '.')
        : '');
    }
    // Detect Kubuntu.
    else if (name == 'Konqueror' && /^Linux\b/i.test(os)) {
      os = 'Kubuntu';
    }
    // Detect Android browsers.
    else if ((manufacturer && manufacturer != 'Google' &&
        ((/Chrome/.test(name) && !/\bMobile Safari\b/i.test(ua)) || /\bVita\b/.test(product))) ||
        (/\bAndroid\b/.test(os) && /^Chrome/.test(name) && /\bVersion\//i.test(ua))) {
      name = 'Android Browser';
      os = /\bAndroid\b/.test(os) ? os : 'Android';
    }
    // Detect Silk desktop/accelerated modes.
    else if (name == 'Silk') {
      if (!/\bMobi/i.test(ua)) {
        os = 'Android';
        description.unshift('desktop mode');
      }
      if (/Accelerated *= *true/i.test(ua)) {
        description.unshift('accelerated');
      }
    }
    // Detect UC Browser speed mode.
    else if (name == 'UC Browser' && /\bUCWEB\b/.test(ua)) {
      description.push('speed mode');
    }
    // Detect PaleMoon identifying as Firefox.
    else if (name == 'PaleMoon' && (data = /\bFirefox\/([\d.]+)\b/.exec(ua))) {
      description.push('identifying as Firefox ' + data[1]);
    }
    // Detect Firefox OS and products running Firefox.
    else if (name == 'Firefox' && (data = /\b(Mobile|Tablet|TV)\b/i.exec(ua))) {
      os || (os = 'Firefox OS');
      product || (product = data[1]);
    }
    // Detect false positives for Firefox/Safari.
    else if (!name || (data = !/\bMinefield\b/i.test(ua) && /\b(?:Firefox|Safari)\b/.exec(name))) {
      // Escape the `/` for Firefox 1.
      if (name && !product && /[\/,]|^[^(]+?\)/.test(ua.slice(ua.indexOf(data + '/') + 8))) {
        // Clear name of false positives.
        name = null;
      }
      // Reassign a generic name.
      if ((data = product || manufacturer || os) &&
          (product || manufacturer || /\b(?:Android|Symbian OS|Tablet OS|webOS)\b/.test(os))) {
        name = /[a-z]+(?: Hat)?/i.exec(/\bAndroid\b/.test(os) ? os : data) + ' Browser';
      }
    }
    // Add Chrome version to description for Electron.
    else if (name == 'Electron' && (data = (/\bChrome\/([\d.]+)\b/.exec(ua) || 0)[1])) {
      description.push('Chromium ' + data);
    }
    // Detect non-Opera (Presto-based) versions (order is important).
    if (!version) {
      version = getVersion([
        '(?:Cloud9|CriOS|CrMo|Edge|Edg|EdgA|EdgiOS|FxiOS|HeadlessChrome|IEMobile|Iron|Opera ?Mini|OPiOS|OPR|Raven|SamsungBrowser|Silk(?!/[\\d.]+$)|UCBrowser|YaBrowser)',
        'Version',
        qualify(name),
        '(?:Firefox|Minefield|NetFront)'
      ]);
    }
    // Detect stubborn layout engines.
    if ((data =
          layout == 'iCab' && parseFloat(version) > 3 && 'WebKit' ||
          /\bOpera\b/.test(name) && (/\bOPR\b/.test(ua) ? 'Blink' : 'Presto') ||
          /\b(?:Midori|Nook|Safari)\b/i.test(ua) && !/^(?:Trident|EdgeHTML)$/.test(layout) && 'WebKit' ||
          !layout && /\bMSIE\b/i.test(ua) && (os == 'Mac OS' ? 'Tasman' : 'Trident') ||
          layout == 'WebKit' && /\bPlayStation\b(?! Vita\b)/i.test(name) && 'NetFront'
        )) {
      layout = [data];
    }
    // Detect Windows Phone 7 desktop mode.
    if (name == 'IE' && (data = (/; *(?:XBLWP|ZuneWP)(\d+)/i.exec(ua) || 0)[1])) {
      name += ' Mobile';
      os = 'Windows Phone ' + (/\+$/.test(data) ? data : data + '.x');
      description.unshift('desktop mode');
    }
    // Detect Windows Phone 8.x desktop mode.
    else if (/\bWPDesktop\b/i.test(ua)) {
      name = 'IE Mobile';
      os = 'Windows Phone 8.x';
      description.unshift('desktop mode');
      version || (version = (/\brv:([\d.]+)/.exec(ua) || 0)[1]);
    }
    // Detect IE 11 identifying as other browsers.
    else if (name != 'IE' && layout == 'Trident' && (data = /\brv:([\d.]+)/.exec(ua))) {
      if (name) {
        description.push('identifying as ' + name + (version ? ' ' + version : ''));
      }
      name = 'IE';
      version = data[1];
    }
    // Leverage environment features.
    if (useFeatures) {
      // Detect server-side environments.
      // Rhino has a global function while others have a global object.
      if (isHostType(context, 'global')) {
        if (java) {
          data = java.lang.System;
          arch = data.getProperty('os.arch');
          os = os || data.getProperty('os.name') + ' ' + data.getProperty('os.version');
        }
        if (rhino) {
          try {
            version = context.require('ringo/engine').version.join('.');
            name = 'RingoJS';
          } catch(e) {
            if ((data = context.system) && data.global.system == context.system) {
              name = 'Narwhal';
              os || (os = data[0].os || null);
            }
          }
          if (!name) {
            name = 'Rhino';
          }
        }
        else if (
          typeof context.process == 'object' && !context.process.browser &&
          (data = context.process)
        ) {
          if (typeof data.versions == 'object') {
            if (typeof data.versions.electron == 'string') {
              description.push('Node ' + data.versions.node);
              name = 'Electron';
              version = data.versions.electron;
            } else if (typeof data.versions.nw == 'string') {
              description.push('Chromium ' + version, 'Node ' + data.versions.node);
              name = 'NW.js';
              version = data.versions.nw;
            }
          }
          if (!name) {
            name = 'Node.js';
            arch = data.arch;
            os = data.platform;
            version = /[\d.]+/.exec(data.version);
            version = version ? version[0] : null;
          }
        }
      }
      // Detect Adobe AIR.
      else if (getClassOf((data = context.runtime)) == airRuntimeClass) {
        name = 'Adobe AIR';
        os = data.flash.system.Capabilities.os;
      }
      // Detect PhantomJS.
      else if (getClassOf((data = context.phantom)) == phantomClass) {
        name = 'PhantomJS';
        version = (data = data.version || null) && (data.major + '.' + data.minor + '.' + data.patch);
      }
      // Detect IE compatibility modes.
      else if (typeof doc.documentMode == 'number' && (data = /\bTrident\/(\d+)/i.exec(ua))) {
        // We're in compatibility mode when the Trident version + 4 doesn't
        // equal the document mode.
        version = [version, doc.documentMode];
        if ((data = +data[1] + 4) != version[1]) {
          description.push('IE ' + version[1] + ' mode');
          layout && (layout[1] = '');
          version[1] = data;
        }
        version = name == 'IE' ? String(version[1].toFixed(1)) : version[0];
      }
      // Detect IE 11 masking as other browsers.
      else if (typeof doc.documentMode == 'number' && /^(?:Chrome|Firefox)\b/.test(name)) {
        description.push('masking as ' + name + ' ' + version);
        name = 'IE';
        version = '11.0';
        layout = ['Trident'];
        os = 'Windows';
      }
      os = os && format(os);
    }
    // Detect prerelease phases.
    if (version && (data =
          /(?:[ab]|dp|pre|[ab]\d+pre)(?:\d+\+?)?$/i.exec(version) ||
          /(?:alpha|beta)(?: ?\d)?/i.exec(ua + ';' + (useFeatures && nav.appMinorVersion)) ||
          /\bMinefield\b/i.test(ua) && 'a'
        )) {
      prerelease = /b/i.test(data) ? 'beta' : 'alpha';
      version = version.replace(RegExp(data + '\\+?$'), '') +
        (prerelease == 'beta' ? beta : alpha) + (/\d+\+?/.exec(data) || '');
    }
    // Detect Firefox Mobile.
    if (name == 'Fennec' || name == 'Firefox' && /\b(?:Android|Firefox OS|KaiOS)\b/.test(os)) {
      name = 'Firefox Mobile';
    }
    // Obscure Maxthon's unreliable version.
    else if (name == 'Maxthon' && version) {
      version = version.replace(/\.[\d.]+/, '.x');
    }
    // Detect Xbox 360 and Xbox One.
    else if (/\bXbox\b/i.test(product)) {
      if (product == 'Xbox 360') {
        os = null;
      }
      if (product == 'Xbox 360' && /\bIEMobile\b/.test(ua)) {
        description.unshift('mobile mode');
      }
    }
    // Add mobile postfix.
    else if ((/^(?:Chrome|IE|Opera)$/.test(name) || name && !product && !/Browser|Mobi/.test(name)) &&
        (os == 'Windows CE' || /Mobi/i.test(ua))) {
      name += ' Mobile';
    }
    // Detect IE platform preview.
    else if (name == 'IE' && useFeatures) {
      try {
        if (context.external === null) {
          description.unshift('platform preview');
        }
      } catch(e) {
        description.unshift('embedded');
      }
    }
    // Detect BlackBerry OS version.
    // http://docs.blackberry.com/en/developers/deliverables/18169/HTTP_headers_sent_by_BB_Browser_1234911_11.jsp
    else if ((/\bBlackBerry\b/.test(product) || /\bBB10\b/.test(ua)) && (data =
          (RegExp(product.replace(/ +/g, ' *') + '/([.\\d]+)', 'i').exec(ua) || 0)[1] ||
          version
        )) {
      data = [data, /BB10/.test(ua)];
      os = (data[1] ? (product = null, manufacturer = 'BlackBerry') : 'Device Software') + ' ' + data[0];
      version = null;
    }
    // Detect Opera identifying/masking itself as another browser.
    // http://www.opera.com/support/kb/view/843/
    else if (this != forOwn && product != 'Wii' && (
          (useFeatures && opera) ||
          (/Opera/.test(name) && /\b(?:MSIE|Firefox)\b/i.test(ua)) ||
          (name == 'Firefox' && /\bOS X (?:\d+\.){2,}/.test(os)) ||
          (name == 'IE' && (
            (os && !/^Win/.test(os) && version > 5.5) ||
            /\bWindows XP\b/.test(os) && version > 8 ||
            version == 8 && !/\bTrident\b/.test(ua)
          ))
        ) && !reOpera.test((data = parse.call(forOwn, ua.replace(reOpera, '') + ';'))) && data.name) {
      // When "identifying", the UA contains both Opera and the other browser's name.
      data = 'ing as ' + data.name + ((data = data.version) ? ' ' + data : '');
      if (reOpera.test(name)) {
        if (/\bIE\b/.test(data) && os == 'Mac OS') {
          os = null;
        }
        data = 'identify' + data;
      }
      // When "masking", the UA contains only the other browser's name.
      else {
        data = 'mask' + data;
        if (operaClass) {
          name = format(operaClass.replace(/([a-z])([A-Z])/g, '$1 $2'));
        } else {
          name = 'Opera';
        }
        if (/\bIE\b/.test(data)) {
          os = null;
        }
        if (!useFeatures) {
          version = null;
        }
      }
      layout = ['Presto'];
      description.push(data);
    }
    // Detect WebKit Nightly and approximate Chrome/Safari versions.
    if ((data = (/\bAppleWebKit\/([\d.]+\+?)/i.exec(ua) || 0)[1])) {
      // Correct build number for numeric comparison.
      // (e.g. "532.5" becomes "532.05")
      data = [parseFloat(data.replace(/\.(\d)$/, '.0$1')), data];
      // Nightly builds are postfixed with a "+".
      if (name == 'Safari' && data[1].slice(-1) == '+') {
        name = 'WebKit Nightly';
        prerelease = 'alpha';
        version = data[1].slice(0, -1);
      }
      // Clear incorrect browser versions.
      else if (version == data[1] ||
          version == (data[2] = (/\bSafari\/([\d.]+\+?)/i.exec(ua) || 0)[1])) {
        version = null;
      }
      // Use the full Chrome version when available.
      data[1] = (/\b(?:Headless)?Chrome\/([\d.]+)/i.exec(ua) || 0)[1];
      // Detect Blink layout engine.
      if (data[0] == 537.36 && data[2] == 537.36 && parseFloat(data[1]) >= 28 && layout == 'WebKit') {
        layout = ['Blink'];
      }
      // Detect JavaScriptCore.
      // http://stackoverflow.com/questions/6768474/how-can-i-detect-which-javascript-engine-v8-or-jsc-is-used-at-runtime-in-androi
      if (!useFeatures || (!likeChrome && !data[1])) {
        layout && (layout[1] = 'like Safari');
        data = (data = data[0], data < 400 ? 1 : data < 500 ? 2 : data < 526 ? 3 : data < 533 ? 4 : data < 534 ? '4+' : data < 535 ? 5 : data < 537 ? 6 : data < 538 ? 7 : data < 601 ? 8 : data < 602 ? 9 : data < 604 ? 10 : data < 606 ? 11 : data < 608 ? 12 : '12');
      } else {
        layout && (layout[1] = 'like Chrome');
        data = data[1] || (data = data[0], data < 530 ? 1 : data < 532 ? 2 : data < 532.05 ? 3 : data < 533 ? 4 : data < 534.03 ? 5 : data < 534.07 ? 6 : data < 534.10 ? 7 : data < 534.13 ? 8 : data < 534.16 ? 9 : data < 534.24 ? 10 : data < 534.30 ? 11 : data < 535.01 ? 12 : data < 535.02 ? '13+' : data < 535.07 ? 15 : data < 535.11 ? 16 : data < 535.19 ? 17 : data < 536.05 ? 18 : data < 536.10 ? 19 : data < 537.01 ? 20 : data < 537.11 ? '21+' : data < 537.13 ? 23 : data < 537.18 ? 24 : data < 537.24 ? 25 : data < 537.36 ? 26 : layout != 'Blink' ? '27' : '28');
      }
      // Add the postfix of ".x" or "+" for approximate versions.
      layout && (layout[1] += ' ' + (data += typeof data == 'number' ? '.x' : /[.+]/.test(data) ? '' : '+'));
      // Obscure version for some Safari 1-2 releases.
      if (name == 'Safari' && (!version || parseInt(version) > 45)) {
        version = data;
      } else if (name == 'Chrome' && /\bHeadlessChrome/i.test(ua)) {
        description.unshift('headless');
      }
    }
    // Detect Opera desktop modes.
    if (name == 'Opera' &&  (data = /\bzbov|zvav$/.exec(os))) {
      name += ' ';
      description.unshift('desktop mode');
      if (data == 'zvav') {
        name += 'Mini';
        version = null;
      } else {
        name += 'Mobile';
      }
      os = os.replace(RegExp(' *' + data + '$'), '');
    }
    // Detect Chrome desktop mode.
    else if (name == 'Safari' && /\bChrome\b/.exec(layout && layout[1])) {
      description.unshift('desktop mode');
      name = 'Chrome Mobile';
      version = null;

      if (/\bOS X\b/.test(os)) {
        manufacturer = 'Apple';
        os = 'iOS 4.3+';
      } else {
        os = null;
      }
    }
    // Newer versions of SRWare Iron uses the Chrome tag to indicate its version number.
    else if (/\bSRWare Iron\b/.test(name) && !version) {
      version = getVersion('Chrome');
    }
    // Strip incorrect OS versions.
    if (version && version.indexOf((data = /[\d.]+$/.exec(os))) == 0 &&
        ua.indexOf('/' + data + '-') > -1) {
      os = trim(os.replace(data, ''));
    }
    // Ensure OS does not include the browser name.
    if (os && os.indexOf(name) != -1 && !RegExp(name + ' OS').test(os)) {
      os = os.replace(RegExp(' *' + qualify(name) + ' *'), '');
    }
    // Add layout engine.
    if (layout && !/\b(?:Avant|Nook)\b/.test(name) && (
        /Browser|Lunascape|Maxthon/.test(name) ||
        name != 'Safari' && /^iOS/.test(os) && /\bSafari\b/.test(layout[1]) ||
        /^(?:Adobe|Arora|Breach|Midori|Opera|Phantom|Rekonq|Rock|Samsung Internet|Sleipnir|SRWare Iron|Vivaldi|Web)/.test(name) && layout[1])) {
      // Don't add layout details to description if they are falsey.
      (data = layout[layout.length - 1]) && description.push(data);
    }
    // Combine contextual information.
    if (description.length) {
      description = ['(' + description.join('; ') + ')'];
    }
    // Append manufacturer to description.
    if (manufacturer && product && product.indexOf(manufacturer) < 0) {
      description.push('on ' + manufacturer);
    }
    // Append product to description.
    if (product) {
      description.push((/^on /.test(description[description.length - 1]) ? '' : 'on ') + product);
    }
    // Parse the OS into an object.
    if (os) {
      data = / ([\d.+]+)$/.exec(os);
      isSpecialCasedOS = data && os.charAt(os.length - data[0].length - 1) == '/';
      os = {
        'architecture': 32,
        'family': (data && !isSpecialCasedOS) ? os.replace(data[0], '') : os,
        'version': data ? data[1] : null,
        'toString': function() {
          var version = this.version;
          return this.family + ((version && !isSpecialCasedOS) ? ' ' + version : '') + (this.architecture == 64 ? ' 64-bit' : '');
        }
      };
    }
    // Add browser/OS architecture.
    if ((data = /\b(?:AMD|IA|Win|WOW|x86_|x)64\b/i.exec(arch)) && !/\bi686\b/i.test(arch)) {
      if (os) {
        os.architecture = 64;
        os.family = os.family.replace(RegExp(' *' + data), '');
      }
      if (
          name && (/\bWOW64\b/i.test(ua) ||
          (useFeatures && /\w(?:86|32)$/.test(nav.cpuClass || nav.platform) && !/\bWin64; x64\b/i.test(ua)))
      ) {
        description.unshift('32-bit');
      }
    }
    // Chrome 39 and above on OS X is always 64-bit.
    else if (
        os && /^OS X/.test(os.family) &&
        name == 'Chrome' && parseFloat(version) >= 39
    ) {
      os.architecture = 64;
    }

    ua || (ua = null);

    /*------------------------------------------------------------------------*/

    /**
     * The platform object.
     *
     * @name platform
     * @type Object
     */
    var platform = {};

    /**
     * The platform description.
     *
     * @memberOf platform
     * @type string|null
     */
    platform.description = ua;

    /**
     * The name of the browser's layout engine.
     *
     * The list of common layout engines include:
     * "Blink", "EdgeHTML", "Gecko", "Trident" and "WebKit"
     *
     * @memberOf platform
     * @type string|null
     */
    platform.layout = layout && layout[0];

    /**
     * The name of the product's manufacturer.
     *
     * The list of manufacturers include:
     * "Apple", "Archos", "Amazon", "Asus", "Barnes & Noble", "BlackBerry",
     * "Google", "HP", "HTC", "LG", "Microsoft", "Motorola", "Nintendo",
     * "Nokia", "Samsung" and "Sony"
     *
     * @memberOf platform
     * @type string|null
     */
    platform.manufacturer = manufacturer;

    /**
     * The name of the browser/environment.
     *
     * The list of common browser names include:
     * "Chrome", "Electron", "Firefox", "Firefox for iOS", "IE",
     * "Microsoft Edge", "PhantomJS", "Safari", "SeaMonkey", "Silk",
     * "Opera Mini" and "Opera"
     *
     * Mobile versions of some browsers have "Mobile" appended to their name:
     * eg. "Chrome Mobile", "Firefox Mobile", "IE Mobile" and "Opera Mobile"
     *
     * @memberOf platform
     * @type string|null
     */
    platform.name = name;

    /**
     * The alpha/beta release indicator.
     *
     * @memberOf platform
     * @type string|null
     */
    platform.prerelease = prerelease;

    /**
     * The name of the product hosting the browser.
     *
     * The list of common products include:
     *
     * "BlackBerry", "Galaxy S4", "Lumia", "iPad", "iPod", "iPhone", "Kindle",
     * "Kindle Fire", "Nexus", "Nook", "PlayBook", "TouchPad" and "Transformer"
     *
     * @memberOf platform
     * @type string|null
     */
    platform.product = product;

    /**
     * The browser's user agent string.
     *
     * @memberOf platform
     * @type string|null
     */
    platform.ua = ua;

    /**
     * The browser/environment version.
     *
     * @memberOf platform
     * @type string|null
     */
    platform.version = name && version;

    /**
     * The name of the operating system.
     *
     * @memberOf platform
     * @type Object
     */
    platform.os = os || {

      /**
       * The CPU architecture the OS is built for.
       *
       * @memberOf platform.os
       * @type number|null
       */
      'architecture': null,

      /**
       * The family of the OS.
       *
       * Common values include:
       * "Windows", "Windows Server 2008 R2 / 7", "Windows Server 2008 / Vista",
       * "Windows XP", "OS X", "Linux", "Ubuntu", "Debian", "Fedora", "Red Hat",
       * "SuSE", "Android", "iOS" and "Windows Phone"
       *
       * @memberOf platform.os
       * @type string|null
       */
      'family': null,

      /**
       * The version of the OS.
       *
       * @memberOf platform.os
       * @type string|null
       */
      'version': null,

      /**
       * Returns the OS string.
       *
       * @memberOf platform.os
       * @returns {string} The OS string.
       */
      'toString': function() { return 'null'; }
    };

    platform.parse = parse;
    platform.toString = toStringPlatform;

    if (platform.version) {
      description.unshift(version);
    }
    if (platform.name) {
      description.unshift(name);
    }
    if (os && name && !(os == String(os).split(' ')[0] && (os == name.split(' ')[0] || product))) {
      description.push(product ? '(' + os + ')' : 'on ' + os);
    }
    if (description.length) {
      platform.description = description.join(' ');
    }
    return platform;
  }

  /*--------------------------------------------------------------------------*/

  // Export platform.
  var platform = parse();

  // Some AMD build optimizers, like r.js, check for condition patterns like the following:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // Expose platform on the global object to prevent errors when platform is
    // loaded by a script tag in the presence of an AMD loader.
    // See http://requirejs.org/docs/errors.html#mismatch for more details.
    root.platform = platform;

    // Define as an anonymous module so platform can be aliased through path mapping.
    define(function() {
      return platform;
    });
  }
  // Check for `exports` after `define` in case a build optimizer adds an `exports` object.
  else if (freeExports && freeModule) {
    // Export for CommonJS support.
    forOwn(platform, function(value, key) {
      freeExports[key] = value;
    });
  }
  else {
    // Export to the global object.
    root.platform = platform;
  }
}.call(this));

/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict'; // The translations are hard coded here because files in the directory are
// put in the html page as raw html, therefore breaking the text here into
// json files is not possible

var i18nextInstance = window.i18next.createInstance();
i18nextInstance.init({
  nsSeparator: false,
  keySeparator: false,

  /* eslint-disable max-len */
  resources: {
    'da-DK': {
      translation: {
        'contact.requiredField': 'Dette felt skal udfyldes.',
        'contact.invalidEmail': 'Ugyldig e-mailadresse',
        'contact.error': 'Der opstod en fejl. Prøv venligst',
        'contact.error.blacklisted': 'Der opstod en fejl. E-mailadressen på hjemmesideejeren er blevet afmeldt eller sortlistet.',
        'contact.error.recaptcha.unavailable': 'Googles Recaptcha-tjeneste, der er nødvendig for at indsende formularen, er ikke tilgængelig lige nu.',
        'contact.resubmit': 'at sende beskeden igen.',
        'contact.tryAgain': 'Hvis problemet fortsætter, bedes du prøve igen om 5 minutter.',
        'lightbox.close': 'Luk lyskasse',
        'lightbox.next': 'Næste billede',
        'lightbox.previous': 'Forrige billede',
        'lightbox.pause': 'Pause',
        'lightbox.play': 'Afspil'
      }
    },
    'de-DE': {
      translation: {
        'contact.requiredField': 'Dies ist ein Pflichtfeld.',
        'contact.invalidEmail': 'Ungültige E-Mail-Adresse',
        'contact.error': 'Ein Fehler ist aufgetreten. Bitte versuchen Sie,',
        'contact.error.blacklisted': 'Ein Fehler ist aufgetreten. Die E-Mail-Adresse des Website-Eigentümers wurde abgemeldet oder gesperrt.',
        'contact.error.recaptcha.unavailable': 'Der Google-reCAPTCHA-Dienst für das Senden des Formulars ist zurzeit nicht verfügbar.',
        'contact.resubmit': 'Ihre Nachricht erneut zu senden.',
        'contact.tryAgain': 'Wenn das Problem erneut auftritt, versuchen Sie es bitte in 5 Minuten noch einmal.',
        'lightbox.close': 'Lightbox schließen',
        'lightbox.next': 'Nächstes Bild',
        'lightbox.previous': 'Vorheriges Bild',
        'lightbox.pause': 'Pause',
        'lightbox.play': 'Abspielen'
      }
    },
    'en-GB': {
      translation: {
        'contact.requiredField': 'This field is required.',
        'contact.invalidEmail': 'Invalid Email Address',
        'contact.invalidDate': 'Please enter a valid date in the format yyyy-mm-dd',
        'contact.invalidTime': 'Please enter a valid time in the 12-hour format HH:MM AM/PM',
        'contact.error': 'There was an error. Please try',
        'contact.error.blacklisted': "There was an error. The site owner's email has been unsubscribed or blacklisted.",
        'contact.error.recaptcha.unavailable': 'The Google Recaptcha service needed to submit this form is not available right now.',
        'contact.resubmit': 'resubmitting your message.',
        'contact.tryAgain': 'If the problem persists, please try again in 5 minutes.',
        'lightbox.close': 'Close lightbox',
        'lightbox.next': 'Next image',
        'lightbox.previous': 'Previous image',
        'lightbox.pause': 'Pause',
        'lightbox.play': 'Play'
      }
    },
    'en-US': {
      translation: {
        'contact.requiredField': 'This field is required.',
        'contact.invalidEmail': 'Invalid Email Address',
        'contact.invalidDate': 'Please enter a valid date in the format yyyy-mm-dd',
        'contact.invalidTime': 'Please enter a valid time in the 12-hour format HH:MM AM/PM',
        'contact.invalid24hTime': 'Please enter a valid time in the 24-hour format hh:mm',
        'contact.error': 'There was an error. Please try',
        'contact.error.blacklisted': "There was an error. The site owner's email has been unsubscribed or blacklisted.",
        'contact.error.recaptcha.unavailable': 'The Google Recaptcha service needed to submit this form is not available right now.',
        'contact.resubmit': 'resubmitting your message.',
        'contact.tryAgain': 'If the problem persists, please try again in 5 minutes.',
        'lightbox.close': 'Close lightbox',
        'lightbox.next': 'Next image',
        'lightbox.previous': 'Previous image',
        'lightbox.pause': 'Pause',
        'lightbox.play': 'Play'
      }
    },
    'es-ES': {
      translation: {
        'contact.requiredField': 'Este campo es obligatorio.',
        'contact.invalidEmail': 'Dirección de correo electrónico no válida',
        'contact.error': 'Se ha producido un error. Intenta',
        'contact.error.blacklisted': 'Se ha producido un error. El correo electrónico del propietario del sitio se ha dado de baja o ha sido bloqueado.',
        'contact.error.recaptcha.unavailable': 'El servicio Recaptcha de Google que se necesita para enviar este formulario no está disponible en este momento.',
        'contact.resubmit': 'volver a enviar tu mensaje.',
        'contact.tryAgain': 'Si el problema persiste, vuelve a intentarlo en 5 minutos.',
        'lightbox.close': 'Cerrar vista ampliada',
        'lightbox.next': 'Siguiente imagen',
        'lightbox.previous': 'Imagen anterior',
        'lightbox.pause': 'Pausar',
        'lightbox.play': 'Reproducir'
      }
    },
    'es-US': {
      translation: {
        'contact.requiredField': 'Este campo es obligatorio.',
        'contact.invalidEmail': 'Dirección de email no válida',
        'contact.error': 'Se ha producido un error. Por favor, intente',
        'contact.error.blacklisted': 'Se ha producido un error. El email del propietario del sitio se ha dado de baja o ha sido bloqueado.',
        'contact.error.recaptcha.unavailable': 'El servicio Recaptcha de Google que se necesita para enviar este formulario no está disponible en este momento.',
        'contact.resubmit': 'volver a enviar su mensaje.',
        'contact.tryAgain': 'Si el problema persiste, vuelva a intentarlo en 5 minutos.',
        'lightbox.close': 'Cerrar vista ampliada',
        'lightbox.next': 'Siguiente imagen',
        'lightbox.previous': 'Imagen anterior',
        'lightbox.pause': 'Pausar',
        'lightbox.play': 'Reproducir'
      }
    },
    'fr-CA': {
      translation: {
        'contact.requiredField': 'Ce champ est obligatoire.',
        'contact.invalidEmail': 'Adresse courriel non valide',
        'contact.error': 'Une erreur est survenue. Veuillez essayer de',
        'contact.error.blacklisted': "Une erreur est survenue. L'adresse courriel du propriétaire du site n'est plus inscrite ou a été ajoutée à la liste noire.",
        'contact.error.recaptcha.unavailable': "Le service recaptcha de Google requis pour envoyer ce formulaire n'est pas disponible actuellement.",
        'contact.resubmit': 'renvoyer votre message.',
        'contact.tryAgain': 'Si le problème persiste, essayez à nouveau dans quelques instants.',
        'lightbox.close': "Fermer l'agrandissement",
        'lightbox.next': 'Image suivante',
        'lightbox.previous': 'Image précédente',
        'lightbox.pause': 'Pause',
        'lightbox.play': 'Lecture'
      }
    },
    'fr-FR': {
      translation: {
        'contact.requiredField': 'Ce champ est obligatoire.',
        'contact.invalidEmail': 'Adresse e-mail non valide',
        'contact.error': "Une erreur est survenue. Merci d'essayer",
        'contact.error.blacklisted': "Une erreur est survenue. L'adresse e-mail du propriétaire du site n'est plus inscrite ou a été ajoutée à la liste noire.",
        'contact.error.recaptcha.unavailable': "Le service recaptcha de Google requis pour envoyer ce formulaire n'est actuellement pas disponible.",
        'contact.resubmit': 'de renvoyer votre message.',
        'contact.tryAgain': 'Si le problème persiste, essayez à nouveau dans quelques instants.',
        'lightbox.close': "Fermer l'agrandissement",
        'lightbox.next': 'Image suivante',
        'lightbox.previous': 'Image précédente',
        'lightbox.pause': 'Pause',
        'lightbox.play': 'Lecture'
      }
    },
    'it-IT': {
      translation: {
        'contact.requiredField': 'Questo campo è obbligatorio.',
        'contact.invalidEmail': 'Indirizzo e-mail non valido',
        'contact.error': 'Si è verificato un errore. Riprova',
        'contact.error.blacklisted': "Si è verificato un errore. L'e-mail del proprietario del sito è stata rimossa o bandita.",
        'contact.error.recaptcha.unavailable': 'Il servizio Google Recaptcha necessario per inviare questo modulo al momento non è disponibile.',
        'contact.resubmit': 'nuovo invio del tuo messaggio in corso',
        'contact.tryAgain': 'Se il problema persiste, riprova tra 5 minuti.',
        'lightbox.close': 'Chiudi lightbox',
        'lightbox.next': 'Immagine successiva',
        'lightbox.previous': 'Immagine precedente',
        'lightbox.pause': 'Pausa',
        'lightbox.play': 'Avvia'
      }
    },
    'ja-JP': {
      translation: {
        'contact.requiredField': 'この欄は必須項目です。',
        'contact.invalidEmail': '無効なEメールアドレス',
        'contact.error': 'エラーが発生しました。もう一度',
        'contact.error.blacklisted': 'エラーが発生しました。ホームページ管理者のメールアドレスが配信停止、またはブロックされています。',
        'contact.error.recaptcha.unavailable': 'このフォームの送信に必要なGoogle reCAPTCHAが現在利用できません。',
        'contact.resubmit': '送信してください。',
        'contact.tryAgain': '問題が続く場合は、5分後にもう一度試してください。',
        'lightbox.close': 'ライトボックスを閉じる',
        'lightbox.next': '次の画像',
        'lightbox.previous': '前の画像',
        'lightbox.pause': '一時停止',
        'lightbox.play': '再生'
      }
    },
    'nb-NO': {
      translation: {
        'contact.requiredField': 'Dette feltet er obligatorisk.',
        'contact.invalidEmail': 'Ugyldig e-postadresse',
        'contact.error': 'Det oppsto en feil. Vennligst prøv',
        'contact.error.blacklisted': 'Det oppsto en feil. Nettstedets e-postadresse er avmeldt eller svartelistet.',
        'contact.error.recaptcha.unavailable': 'Google Recaptcha-tjenesten som trengs for å sende inn dette skjemaet, er ikke tilgjengelig akkurat nå.',
        'contact.resubmit': 'sender meldingen din på nytt.',
        'contact.tryAgain': 'Hvis problemet vedvarer, kan du prøve igjen om fem minutter.',
        'lightbox.close': 'Lukk lysboksen',
        'lightbox.next': 'Neste bilde',
        'lightbox.previous': 'Forrige bilde',
        'lightbox.pause': 'Pause',
        'lightbox.play': 'Avspill'
      }
    },
    'nl-NL': {
      translation: {
        'contact.requiredField': 'Dit veld is verplicht.',
        'contact.invalidEmail': 'Ongeldig e-mailadres',
        'contact.error': 'Er is een fout opgetreden. Probeer',
        'contact.error.blacklisted': 'Er is een fout opgetreden. Het e-mailadres van de eigenaar van de site is uitgeschreven of op de zwarte lijst geplaatst.',
        'contact.error.recaptcha.unavailable': 'De Google Recaptcha-service die nodig is om dit formulier te verzenden, is op dit moment niet beschikbaar.',
        'contact.resubmit': 'je bericht opnieuw te verzenden.',
        'contact.tryAgain': 'Probeer het nog eens over 5 minuten, als het probleem zich blijft voordoen.',
        'lightbox.close': 'Lightbox kiezen',
        'lightbox.next': 'Volgende afbeelding',
        'lightbox.previous': 'Vorige afbeelding',
        'lightbox.pause': 'Pauzeren',
        'lightbox.play': 'Afspelen'
      }
    },
    'sv-SE': {
      translation: {
        'contact.requiredField': 'Det här fältet är obligatoriskt.',
        'contact.invalidEmail': 'Ogiltig e-postadress',
        'contact.error': 'Ett fel uppstod. Försök',
        'contact.error.blacklisted': 'Ett fel uppstod. Webbplatsinnehavarens e-postadress har avanmälts eller svartlistats.',
        'contact.error.recaptcha.unavailable': 'Googles Recaptcha-tjänst som krävs för att skicka in det här formuläret är inte tillgänglig just nu.',
        'contact.resubmit': 'skicka ditt meddelande igen.',
        'contact.tryAgain': 'Försök igen om 5 minuter om problemet kvarstår.',
        'lightbox.close': 'Stäng lightbox',
        'lightbox.next': 'Nästa bild',
        'lightbox.previous': 'Föregående bild',
        'lightbox.pause': 'Pausa',
        'lightbox.play': 'Spela upp'
      }
    },
    'fi-FI': {
      translation: {
        'contact.requiredField': 'Tämä kenttä on pakollinen.',
        'contact.invalidEmail': 'Virheellinen sähköpostiosoite',
        'contact.invalidDate': 'Anna kelvollinen päivämäärä muodossa vvvv-kk-pp',
        'contact.invalidTime': 'Anna kelvollinen kellonaika 12 tunnin muodossa HH.MM',
        'contact.invalid24hTime': 'Anna kelvollinen kellonaika 24 tunnin muodossa HH.MM',
        'contact.error': 'Virhe. Yritä',
        'contact.error.blacklisted': 'Virhe. Tilaus sivuston omistajan sähköpostiosoitteeseen on peruutettu, tai osoite on mustalla listalla.',
        'contact.error.recaptcha.unavailable': 'Tämän lomakkeen lähetystä varten vaadittava Google reCAPTCHA -palvelu ei ole juuri nyt käytettävissä.',
        'contact.resubmit': 'lähettää viestisi uudelleen.',
        'contact.tryAgain': 'Jos ongelma jatkuu, yritä uudelleen 5 minuutin kuluttua.',
        'lightbox.close': 'Sulje Lightbox',
        'lightbox.next': 'Seuraava kuva',
        'lightbox.previous': 'Edellinen kuva',
        'lightbox.pause': 'Keskeytä',
        'lightbox.play': 'Toista'
      }
    }
  },

  /* eslint-enable max-len */
  lng: window.i18nLocale,
  fallbackLng: 'en-US',
  interpolation: {
    escapeValue: false,
    prefix: '__',
    suffix: '__'
  }
});
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';

(function () {
  var queryParams = window.location.search;
  var isVRT = queryParams.indexOf('vrt=true') !== -1;
  var IMAGE_SELECTOR = '.imageMedia-pip';
  var SVG_SELECTOR = '.svgMedia-pip';
  var selectors = [IMAGE_SELECTOR, SVG_SELECTOR];

  function convertToArray(nodelist) {
    return [].slice.call(nodelist);
  }

  function setUpLazyLoad(target) {
    var observer = new IntersectionObserver((entries, observer) => {
      entries.forEach(entry => {
        var item = entry.target; // Detect when the item intersects with the viewport

        if (entry.isIntersecting) {
          var dataLazyUrl = item.getAttribute('data-lazy-url');

          if (dataLazyUrl) {
            // We want to preload the image and only remove the blur when it's loaded
            var img = new Image();

            img.onload = function () {
              var mediaImg = item.querySelector('img');
              mediaImg.setAttribute('src', dataLazyUrl);
              item.classList.add('gaussian-blur--loaded');
              item.style.backgroundImage = '';
              item.style.backgroundSize = '';
            };

            img.src = dataLazyUrl;
          }

          observer.disconnect();
        } else if (!entry.isIntersecting && !isVRT) {
          // Apply a blur effect
          item.classList.add('gaussian-blur--initial');
          var thumbnail = item.getAttribute('data-lazy-thumbnail');

          if (thumbnail && mediaImg) {
            item.style.backgroundImage = 'url(' + thumbnail + ')';
            item.style.backgroundSize = 'cover';
          }
        }
      });
    });
    observer.observe(target);
  }

  var itemsToLazyLoad = [];

  for (var j = 0; j < selectors.length; j++) {
    itemsToLazyLoad = itemsToLazyLoad.concat(convertToArray(document.querySelectorAll(selectors[j])));
  }

  for (var i = 0; i < itemsToLazyLoad.length; i++) {
    var item = itemsToLazyLoad[i];
    var fullUrl = item.getAttribute('data-lazy-url');
    var mediaImg = item.querySelector('img'); // We may want to skip lazy loading for testing purposes

    if (isVRT && mediaImg) {
      mediaImg.setAttribute('src', fullUrl);
    } else if (!isVRT) {
      setUpLazyLoad(item);
    }
  }
})();
/*********/
"use strict";

/* eslint no-var: 0, prefer-const: 0 */

/* exported throttle */

/**************
 * UTILITY
 *************/
// lodash.throttle, copy/pasted here to avoid including all of lodash
var _now = Date.now || function () {
  return new Date().getTime();
};

var throttle = function (func, wait, options) {
  var context;
  var args;
  var result;
  var timeout = null;
  var previous = 0;

  if (!options) {
    options = {};
  }

  var later = function () {
    previous = options.leading === false ? 0 : _now();
    timeout = null;
    result = func.apply(context, args);

    if (!timeout) {
      context = args = null;
    }
  };

  return function () {
    var now = _now();

    if (!previous && options.leading === false) {
      previous = now;
    }

    var remaining = wait - (now - previous);
    context = this;
    args = arguments;

    if (remaining <= 0 || remaining > wait) {
      clearTimeout(timeout);
      timeout = null;
      previous = now;
      result = func.apply(context, args);

      if (!timeout) {
        context = args = null;
      }
    } else if (!timeout && options.trailing !== false) {
      timeout = setTimeout(later, remaining);
    }

    return result;
  };
};
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';
/*
 * ANIMATED INTERNAL LINK SCROLLING
 */

var anchorScrolling = function () {
  var navigationPipLinks = document.querySelectorAll('.navigation-pip .link a');
  var IE = navigator.userAgent.indexOf('Trident') >= 0;
  var FF = navigator.userAgent.indexOf('Gecko/') >= 0;

  function getViewportNode() {
    if (document.scrollingElement) {
      return document.scrollingElement;
    } else if (IE || FF) {
      return document.documentElement;
    } else {
      return document.body;
    }
  }

  function linkClickHandler(event) {
    event.preventDefault();
    var href = event.currentTarget.getAttribute('href');
    var targetName = event.currentTarget.getAttribute('data-destination-block');
    var target = document.querySelector('[name="' + targetName + '"]');

    if (!targetName) {
      targetName = href.substring(1);
      event.currentTarget.setAttribute('data-destination-block', target);
    } // The bounding rect's top is relative to the viewport, so it represents the delta
    // in scroll position (top > 0 : scroll down, top < 0 : scroll up)


    var delta = target.getBoundingClientRect().top; // Number of pixels we want to "ease" the block into view when scrolling

    var BLOCK_SCROLL_EASE_AMOUNT = 750;
    window.doScroll(getViewportNode(), delta, BLOCK_SCROLL_EASE_AMOUNT, function () {
      window.location.hash = href;
    });
  }

  for (var i = 0; i < navigationPipLinks.length; i++) {
    var link = navigationPipLinks.item(i);
    var href = link.getAttribute('href');

    if (href.indexOf('#') === 0) {
      if (link.addEventListener) {
        link.addEventListener('click', linkClickHandler);
      } else {
        // IE8
        link.attachEvent('onclick', linkClickHandler);
      }
    }
  }
};

anchorScrolling();
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';

(function () {
  var currentLightboxImage = 0;
  var lightboxVisible = false;
  var preloaded = false;
  var preloadUrls = [];
  var preloadedImages = [];
  var imagesToShowInLightbox = [];
  var NON_MEDIA_GALLERY_IMAGES_SELECTOR = 'section.lightbox-mode' + ' .graphic-pip-container:not(.force-disable-lightbox)' + ' img[data-lightbox-url], .force-lightbox img[data-lightbox-url]:not([data-media-gallery-index])';
  var MEDIA_GALLERY_IMAGES_SELECTOR = 'img[data-lightbox-url][data-media-gallery-index]';
  var MEDIA_GALLERY_COLUMNS_SELECTOR = '.media-gallery__column';
  var autoplayInterval;
  var autoplayTime;
  var autoplayOn; // Run a function for each lightbox image

  function forEachLightboxImage(images, callback) {
    for (var i = 0; i < images.length; i++) {
      callback(images[i]);
    }
  } // 1. Attach listeners to the lightbox component


  function attachListenersToLightbox() {
    var closeButton = document.querySelector('.lightbox__close-btn');
    closeButton.addEventListener('click', closeLightbox);
    closeButton.setAttribute('aria-label', window.i18next.t('lightbox.close'));
    var cover = document.querySelector('.lightbox__cover');
    cover.addEventListener('click', closeLightbox);
    var next = document.querySelector('.lightbox__nav-btn--next');
    next.addEventListener('click', nextLightboxImage);
    next.setAttribute('aria-label', window.i18next.t('lightbox.next'));
    var previous = document.querySelector('.lightbox__nav-btn--previous');
    previous.addEventListener('click', previousLightboxImage);
    previous.setAttribute('aria-label', window.i18next.t('lightbox.previous'));
    var image = document.querySelector('.lightbox__image');
    image.addEventListener('click', nextLightboxImage);
  } // 2a. Run the first time setup for all lightbox images


  function prepImagesForLightbox() {
    var nonGalleryImages = document.querySelectorAll(NON_MEDIA_GALLERY_IMAGES_SELECTOR);
    forEachLightboxImage(nonGalleryImages, setupLightboxImage);
    var galleryImages = document.querySelectorAll(MEDIA_GALLERY_IMAGES_SELECTOR);
    forEachLightboxImage(galleryImages, setupLightboxImage);
  } // 2b. Do a first time setup for lightbox images


  function setupLightboxImage(thisImage) {
    if (thisImage.dataset.lightboxUrl) {
      preloadUrls.push(thisImage.dataset.lightboxUrl);
      thisImage.addEventListener('click', getImagesForLightbox.bind(thisImage, thisImage));
      thisImage.addEventListener('mouseenter', handlePreload.bind(thisImage, thisImage));
    }
  } // Preload all lightbox images when called. Only works on first call.


  function preloadImages() {
    if (!preloaded) {
      for (var i = 0; i < preloadUrls.length; i++) {
        preloadedImages[i] = new Image();
        preloadedImages[i].src = preloadUrls[i];
      }

      preloaded = true;
    }
  } // Handler for on hover on lightbox images


  function handlePreload(thisImage) {
    thisImage.removeEventListener('mouseenter', handlePreload);
    preloadImages();
  }

  function convertToArray(nodeList) {
    return [].slice.call(nodeList);
  }
  /* e.g. 3 columns with 4 images with displayed Tower index as such:
   * 1 3 4
   * 2
   * But to the user, it should read left to right and should open the gallery like
   * 1 2 3
   * 4
   * This function picks off the top image of each column
   */


  function orderGalleryImages(columns, orderedImages = []) {
    var hasRemainingImages = false; // Go through each column and pick off the first image

    for (var i = 0; i < columns.length; i++) {
      var image = columns[i].shift();

      if (image) {
        orderedImages.push(image);
        hasRemainingImages = true;
      }
    } // If any column has remaining images, recursively call again


    if (hasRemainingImages) {
      return orderGalleryImages(columns, orderedImages);
    } else {
      return orderedImages;
    }
  } // 2c. When an image is clicked, it figures out which images should be loaded in the lightbox


  function getImagesForLightbox(imageEl) {
    var mediaGalleryIndex = imageEl.dataset.mediaGalleryIndex;

    if (mediaGalleryIndex) {
      var mediaGallery = document.querySelector('[data-tower-id="' + mediaGalleryIndex + '"]');

      if (mediaGallery.dataset.lightboxAutoplay === 'true') {
        autoplayTime = mediaGallery.dataset.lightboxAutoplayTime;
        setAutoplayOn();
        setupPauseAndPlayButton();
      }

      var mediaGalleryImages;

      if (mediaGallery.classList.contains('media-gallery--masonry')) {
        var mediaGalleryColumns = convertToArray(mediaGallery.querySelectorAll(MEDIA_GALLERY_COLUMNS_SELECTOR));
        var convertedColumns = [];

        for (var i = 0; i < mediaGalleryColumns.length; i++) {
          convertedColumns.push(convertToArray(mediaGalleryColumns[i].querySelectorAll(MEDIA_GALLERY_IMAGES_SELECTOR)));
        } // Because media gallery arranges the images in column, we need to sequentially get the first image
        // in each column to order them correctly


        mediaGalleryImages = orderGalleryImages(convertedColumns, []);
      } else {
        mediaGalleryImages = convertToArray(mediaGallery.querySelectorAll(MEDIA_GALLERY_IMAGES_SELECTOR));
      }

      for (var j = 0; j < mediaGalleryImages.length; j++) {
        var image = mediaGalleryImages[j];
        image.dataset.lightBoxImageIndex = j;
        imagesToShowInLightbox.push(constructImageData(image, j));
      }
    } else {
      var nonGalleryImages = document.querySelectorAll(NON_MEDIA_GALLERY_IMAGES_SELECTOR);

      for (var k = 0; k < nonGalleryImages.length; k++) {
        nonGalleryImages[k].dataset.lightBoxImageIndex = k;
        imagesToShowInLightbox.push(constructImageData(nonGalleryImages[k], k));
      }
    }

    currentLightboxImage = parseInt(imageEl.dataset.lightBoxImageIndex);
    showLightboxImage(imagesToShowInLightbox[currentLightboxImage]);
    updateSlideCounter(currentLightboxImage);
    var total = document.querySelector('.lightbox__slide-counter__total');
    total.innerHTML = imagesToShowInLightbox.length;
    lightboxVisible = true;
    document.querySelector('.lightbox').classList.add('lightbox--visible');
    document.querySelector('body').classList.add('overflow-hidden');
  } // 2d. Construct image data for the lightbox


  function constructImageData(imageEl, index) {
    var displayTitle = imageEl.dataset.displayTitle;
    var displayDescription = imageEl.dataset.displayDescription;
    var renderTitle = imageEl.dataset.renderTitle;
    var renderDescription = imageEl.dataset.renderDescription;
    var descriptorType = imageEl.dataset.descriptorType;
    var imageData = {
      index,
      url: imageEl.dataset.lightboxUrl,
      renderTitle,
      renderDescription,
      descriptorType
    };

    if (displayTitle) {
      imageData.displayTitle = displayTitle;
    }

    if (displayDescription) {
      imageData.displayDescription = displayDescription;
    }

    return imageData;
  } // 2e. Show a given image element in the lightbox


  function showLightboxImage(imageData) {
    document.querySelector('.lightbox__image').src = imageData.url;
    var displayTitle = imageData.displayTitle;
    var displayDescription = imageData.displayDescription;
    var renderTitle = imageData.renderTitle;
    var renderDescription = imageData.renderDescription;
    var descriptorType = imageData.descriptorType;
    var lightboxOptions = ['lightbox', 'hoverAndLightbox'];
    var shouldDisplayTitle = descriptorType !== 'overlay' || lightboxOptions.indexOf(renderTitle) !== -1;
    var shouldDisplayDescription = descriptorType !== 'overlay' || lightboxOptions.indexOf(renderDescription) !== -1;
    const titleText = displayTitle && shouldDisplayTitle ? displayTitle : '';
    document.querySelector('.lightbox__title').innerHTML = titleText;
    const descriptionText = displayDescription && shouldDisplayDescription ? displayDescription : '';
    document.querySelector('.lightbox__description').innerHTML = descriptionText;
    const lightboxInfo = document.querySelector('.lightbox__info');

    if (titleText === '' && descriptionText === '') {
      lightboxInfo.classList.add('lightbox__info--hidden');
    } else if (lightboxInfo.classList.contains('lightbox__info--hidden')) {
      lightboxInfo.classList.remove('lightbox__info--hidden');
    }
  } // Show the next lightbox image


  function nextLightboxImage() {
    currentLightboxImage += 1;

    if (autoplayOn) {
      resetAutoplay();
    }

    if (currentLightboxImage >= imagesToShowInLightbox.length) {
      currentLightboxImage = 0;
    }

    updateSlideCounter(currentLightboxImage);
    showLightboxImage(imagesToShowInLightbox.filter(function (image) {
      return image.index === currentLightboxImage;
    })[0]);
  } // Show the previous lightbox image


  function previousLightboxImage() {
    currentLightboxImage -= 1;

    if (autoplayOn) {
      resetAutoplay();
    }

    if (currentLightboxImage < 0) {
      currentLightboxImage = imagesToShowInLightbox.length - 1;
    }

    updateSlideCounter(currentLightboxImage);
    showLightboxImage(imagesToShowInLightbox.filter(function (image) {
      return image.index === currentLightboxImage;
    })[0]);
  }

  function updateSlideCounter() {
    var current = document.querySelector('.lightbox__slide-counter__current');
    current.innerHTML = currentLightboxImage + 1;
  } // Close the lightbox


  function closeLightbox() {
    autoplayOn = false;
    clearInterval(autoplayInterval);
    lightboxVisible = false;
    imagesToShowInLightbox = [];
    currentLightboxImage = 0;
    document.querySelector('.lightbox__pause-btn').classList.remove('lightbox__btn--visible');
    document.querySelector('.lightbox__play-btn').classList.remove('lightbox__btn--visible');
    document.querySelector('.lightbox__image').src = '';
    document.querySelector('.lightbox__title').innerHTML = '';
    document.querySelector('.lightbox__description').innerHTML = '';
    document.querySelector('.lightbox').classList.remove('lightbox--visible');
    document.querySelector('body').classList.remove('overflow-hidden');
  }

  function setAutoplayOn() {
    autoplayOn = true;
    autoplayInterval = setInterval(function () {
      nextLightboxImage();
    }, autoplayTime * 1000);
    document.querySelector('.lightbox__play-btn').classList.remove('lightbox__btn--visible');
    document.querySelector('.lightbox__pause-btn').classList.add('lightbox__btn--visible');
  }

  function setAutoplayOff() {
    autoplayOn = false;
    clearInterval(autoplayInterval);
    document.querySelector('.lightbox__pause-btn').classList.remove('lightbox__btn--visible');
    document.querySelector('.lightbox__play-btn').classList.add('lightbox__btn--visible');
  }

  function resetAutoplay() {
    clearInterval(autoplayInterval);
    autoplayInterval = setInterval(function () {
      nextLightboxImage();
    }, autoplayTime * 1000);
  } // Add autoplay pause/play button


  function setupPauseAndPlayButton() {
    var pause = document.querySelector('.lightbox__pause-btn');
    pause.addEventListener('click', setAutoplayOff);
    pause.setAttribute('aria-label', window.i18next.t('lightbox.pause'));
    var play = document.querySelector('.lightbox__play-btn');
    play.addEventListener('click', setAutoplayOn);
    play.setAttribute('aria-label', window.i18next.t('lightbox.play'));
  } // 4. Add the keyboard listeners


  function setupKeyboardLightboxControls() {
    window.addEventListener('keydown', function (keyboardEvent) {
      if (lightboxVisible) {
        switch (keyboardEvent.keyCode) {
          case 37:
            previousLightboxImage();
            break;

          case 39:
            nextLightboxImage();
            break;

          case 27:
            closeLightbox();
            break;

          default:
            break;
        }
      }
    });
  }

  if (document.querySelector('.lightbox')) {
    // 1. Attach the listeners to the lightbox component
    attachListenersToLightbox(); // 2. Prep each lightbox by attaching click handlers and preloading the images

    prepImagesForLightbox(); // 3. Add keyboard listeners for the lightbox

    setupKeyboardLightboxControls();
  }
})();
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';

(function () {
  /* polyfill for closest() */
  if (!Element.prototype.matches) {
    Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
  }

  if (!Element.prototype.closest) {
    Element.prototype.closest = function (s) {
      var el = this;

      do {
        if (el.matches(s)) {
          return el;
        }

        el = el.parentElement || el.parentNode;
      } while (el !== null && el.nodeType === 1);

      return null;
    };
  }

  var CAROUSEL_BLOCK_SELECTOR = '[data-is-carousel-block="true"]';
  var CAROUSEL_SELECTOR = '.block-content.carousel';
  var FACE_WRAPPER_SELECTOR = '.carousel-faces';
  var BACKGROUND_SELECTOR = '.block-background';
  var FACE_SELECTOR = FACE_WRAPPER_SELECTOR + ' .carousel-face';
  var CURRENT_FACE_SELECTOR = FACE_WRAPPER_SELECTOR + ' .current';
  var SWIPE_THRESHOLD = 50;

  function getCarouselBlocks() {
    return document.querySelectorAll(CAROUSEL_SELECTOR);
  }

  function getCarouselFaces(blockContent) {
    return blockContent.querySelectorAll(FACE_SELECTOR);
  } // Run a function for each element in the array


  function forEachElement(elements, callback) {
    for (var i = 0; i < elements.length; i++) {
      callback(elements[i], i);
    }
  } // Set the transitioning class on the face wrapper and attach listener for its transitionend


  function setTransitionState(block, currentFace) {
    var faceWrapper = block.querySelector(FACE_WRAPPER_SELECTOR);
    faceWrapper.classList.add('transitioning');
    currentFace.addEventListener(currentFace.style.WebkitTransition !== undefined ? 'webkitTransitionEnd' : 'transitionend', removeTransitionState.bind(null, block));
  } // Remove the transition class and event when the animation has ended


  function removeTransitionState(block, transitionEvent) {
    if (!transitionEvent.target.classList.contains('carousel-face')) {
      return;
    }

    transitionEvent.target.parentNode.classList.remove('transitioning');
    transitionEvent.target.removeEventListener(transitionEvent.type, this.removeTransitionState);
  } // Returns the currently selected block face index


  function getCurrentFaceIndex(blockContent) {
    var faces = getCarouselFaces(blockContent);
    var currentFace = blockContent.querySelector(CURRENT_FACE_SELECTOR);
    return Array.prototype.indexOf.call(faces, currentFace);
  }

  function selectNextCarouselFace(blockContent) {
    selectCarouselFace(getCurrentFaceIndex(blockContent) + 1, blockContent);
  }

  function selectPreviousCarouselFace(blockContent) {
    selectCarouselFace(getCurrentFaceIndex(blockContent) - 1, blockContent);
  } // Handles the selection of a carousel face


  function selectCarouselFace(selectedIndex, blockContent) {
    var faces = getCarouselFaces(blockContent);
    var previousFace = blockContent.querySelector(CURRENT_FACE_SELECTOR);
    var previousIndex = Array.prototype.indexOf.call(faces, previousFace);
    var backgrounds = blockContent.closest(CAROUSEL_BLOCK_SELECTOR).querySelectorAll(BACKGROUND_SELECTOR); // Cycle through faces if we're at the end

    if (selectedIndex < 0) {
      selectedIndex = faces.length - 1;
    } else if (selectedIndex >= faces.length) {
      selectedIndex = 0;
    } // only hide/show backgrounds if the carousel has multiple backgrounds set


    if (backgrounds.length > 1) {
      forEachElement(backgrounds, function (background, index) {
        if (selectedIndex === index) {
          // show current background
          background.removeAttribute('hidden');
        } else {
          // hide background
          background.setAttribute('hidden', true);
        }
      });
    }

    setTransitionState(blockContent, faces[selectedIndex]);
    forEachElement(getCarouselFaces(blockContent), function (face, index) {
      if (index === selectedIndex) {
        face.classList.add('current');
        face.classList.remove('left');
        face.classList.remove('right');
        face.classList.remove('previous');
      } else {
        face.classList.remove('current');

        if (index === previousIndex) {
          face.classList.add('previous');
        } else {
          face.classList.remove('previous');
        }

        if (index > selectedIndex) {
          face.classList.remove('left');
          face.classList.add('right');
        } else {
          face.classList.add('left');
          face.classList.remove('right');
        }
      }
    });
  }

  function setContainerHeight(blockContent) {
    // Set the height of the faces container to equal the height of the tallest face
    var maxFaceHeight = 0;
    forEachElement(blockContent.querySelectorAll('.carousel-face'), function (face) {
      var faceHeight = face.getBoundingClientRect().height;

      if (faceHeight > maxFaceHeight) {
        maxFaceHeight = faceHeight;
      }
    });
    blockContent.querySelector('.carousel-faces').style.height = maxFaceHeight + 'px';
  } // Initialize all the listeners we need for clickable elements


  forEachElement(getCarouselBlocks(), function (blockContent) {
    var swipeStartX = 0;
    blockContent.addEventListener('touchstart', function (event) {
      var touchInfo = event.changedTouches[0];
      swipeStartX = touchInfo.pageX;
    });
    blockContent.addEventListener('touchend', function (event) {
      var touchInfo = event.changedTouches[0];
      var swipeEndX = touchInfo.pageX;
      var swipeDiff = swipeStartX - swipeEndX; // Swipe right

      if (swipeDiff > SWIPE_THRESHOLD) {
        selectNextCarouselFace(blockContent);
      } else if (swipeDiff < -1 * SWIPE_THRESHOLD) {
        selectPreviousCarouselFace(blockContent);
      }
    });
    var dataset = blockContent.dataset;

    if (dataset.autoplayDelayTime) {
      var autoplayDelayTime = dataset.autoplayDelayTime;
      setInterval(selectNextCarouselFace.bind(null, blockContent), autoplayDelayTime * 1000);
    } // Attach click listners for the side controls.


    forEachElement(blockContent.querySelectorAll('.face-control-side'), function (control) {
      if (control.classList.contains('left')) {
        control.addEventListener('click', selectPreviousCarouselFace.bind(null, blockContent));
      } else if (control.classList.contains('right')) {
        control.addEventListener('click', selectNextCarouselFace.bind(null, blockContent));
      }
    });
    window.setTimeout(setContainerHeight.bind(null, blockContent), 1);
    window.addEventListener('resize', setContainerHeight.bind(null, blockContent));
    var imagesInCarousel = blockContent.querySelectorAll('.carousel-face img');
    var imagesLoaded = 0;
    forEachElement(imagesInCarousel, function (image) {
      var imageToLoad = new Image();

      imageToLoad.onload = function () {
        imagesLoaded++;

        if (imagesLoaded === imagesInCarousel.length) {
          setContainerHeight(blockContent);
        }
      };

      imageToLoad.src = image.getAttribute('src');
    });
  });
})();
/*********/
"use strict";

/* eslint no-var: 0, prefer-const: 0 */

/* eslint camelcase: 0 */
(function () {
  var Money = window.Money;
  var validMoneyRegex = /^-?\d+\.\d\d$/;

  function Cart() {
    this.items = [];
    this.purchaseSuccess = false;
    this.cartNode = document.getElementsByClassName('shoppingCart')[0];
    this.pipNodes = document.getElementsByClassName('paypal-pip');
    this.business = this.cartNode && this.cartNode.getAttribute('data-publishedjs-merchant-id');
    this.currency = this.cartNode && this.cartNode.getAttribute('data-publishedjs-currency');
    this.currencySymbol = this.cartNode && this.cartNode.getAttribute('data-publishedjs-currency-symbol'); // abort cart creation in the case of no cart or business

    if (!this.cartNode || !this.business) {
      return false;
    }

    if (typeof window.localStorage !== 'undefined') {
      this.fromJSON(window.localStorage.getItem('shoppingCart'));
    } // attach event listeners to payment buttons


    for (var i = 0; i < this.pipNodes.length; i++) {
      var paypalPip = this.pipNodes[i];
      var paypalPipButton = paypalPip.getElementsByClassName('paypal-addToCart')[0];
      paypalPipButton.addEventListener('click', function (event) {
        var item = getItemData(event.target);
        this.addItem(item);
        event.preventDefault();
        return false;
      }.bind(this));
    } // attach event listener to cart widget


    var cartHandler = this.cartNode.querySelector('.shoppingCart__openHandler');
    cartHandler.addEventListener('click', this.toggleCartOpen.bind(this));
    var paypalSuccessExit = this.cartNode.querySelector('.paypal-success__exit');
    paypalSuccessExit.addEventListener('click', this.toggleCartOpen.bind(this));
    var paypalFailureAction = this.cartNode.querySelector('.paypal-fail__action');
    paypalFailureAction.addEventListener('click', this.toggleCartOpen.bind(this));
    window.paypal.Buttons({
      createOrder: function (data, actions) {
        var createData = this.getCart();
        return actions.order.create(createData);
      }.bind(this),
      onApprove: function (data, actions) {
        return actions.order.capture().then(function (details) {
          this.purchaseSuccess = true;
          this.removeAllItems();
          success(this.cartNode);
        }.bind(this));
      }.bind(this),
      onError: function (err) {
        failure(this.cartNode);
      }.bind(this),
      onCancel: function (data) {
        buy(this.cartNode);
      }.bind(this)
    }).render('.shoppingCart__button__checkout');
    document.addEventListener('click', function (e) {
      if (this.cartNode.classList.contains('shoppingCart--open') && !this.cartNode.contains(e.target)) {
        this.toggleCartOpen(e);
      }
    }.bind(this));
    this.updateCartContents();
  }

  Cart.prototype.toggleCartOpen = function (event) {
    this.purchaseSuccess = false;
    this.cartNode.classList.toggle('shoppingCart--open');
    document.body.classList.toggle('no-scroll');
    this.updateCartContents();
    event.preventDefault();
    event.stopPropagation();
    return false;
  };

  Cart.prototype.fromJSON = function (json) {
    if (!json) {
      return;
    }

    if (typeof json === 'string') {
      try {
        json = JSON.parse(json);
      } catch (e) {
        console.error(e);
        return;
      }
    }

    if (json.items) {
      this.items = json.items;
    }
  };

  Cart.prototype.toJSON = function () {
    return {
      items: this.items
    };
  };

  Cart.prototype.addItem = function (item) {
    // If an entry already exists for this item, combine quantity
    var itemExists = false;

    for (var i = 0; i < this.items.length; i++) {
      var itemIsInCart = this.items[i].id === item.id;
      var noAdditionalOption = !item.textField && !item.dropdownSelection;
      var textFieldExists = item.textField && this.items[i].textField === item.textField;
      var dropdownSelectionExists = item.dropdownSelection && this.items[i].dropdownSelection === item.dropdownSelection;

      if (itemIsInCart && (noAdditionalOption || textFieldExists || dropdownSelectionExists)) {
        this.items[i].quantity += item.quantity;
        itemExists = true;
        break;
      }
    } // Otherwise add entry for item


    if (!itemExists) {
      this.items.push(item);
    }

    this.updateCartContents();
  };

  Cart.prototype.removeItemAtIndex = function (index) {
    this.items.splice(index, 1);
    this.updateCartContents();
  };

  Cart.prototype.isEmpty = function () {
    return this.items.length === 0;
  };

  Cart.prototype.removeAllItems = function () {
    this.items = [];
    this.updateCartContents();
  };

  Cart.prototype.getCart = function () {
    var currency = this.currency;
    var itemUnits = this.items.map(v => {
      let tax;

      if (v.tax) {
        tax = {
          currency_code: currency,
          value: v.tax
        };
      }

      return {
        name: v.item_name.substr(0, 127),
        quantity: v.quantity,
        unit_amount: {
          currency_code: currency,
          value: v.amount
        },
        description: v.textField || v.dropdownSelection,
        tax
      };
    });
    var itemTotal = this.items.reduce(function (sum, item) {
      return Money.add(Money.floatToAmount(sum), Money.mul(item.amount, Money.floatToAmount(item.quantity)));
    }, '0.00');
    var taxTotal = this.items.reduce(function (sum, item) {
      return Money.add(Money.floatToAmount(sum), Money.mul(item.tax || '0.00', Money.floatToAmount(item.quantity)));
    }, '0.00');
    var shippingTotal = this.items.reduce(function (sum, item) {
      return Money.add(Money.floatToAmount(sum), Money.mul(item.shipping || '0.00', Money.floatToAmount(item.quantity)));
    }, '0.00');
    var purchase_units = [{
      amount: {
        value: [itemTotal, taxTotal, shippingTotal].reduce(Money.add, '0.00'),
        currency_code: currency,
        breakdown: {
          item_total: {
            currency_code: currency,
            value: itemTotal
          },
          tax_total: {
            currency_code: currency,
            value: taxTotal
          },
          shipping: {
            currency_code: currency,
            value: shippingTotal
          }
        }
      },
      items: itemUnits
    }];
    return {
      purchase_units
    };
  };

  Cart.prototype.getQuantity = function () {
    return this.items.reduce(function (sum, item) {
      return sum + item.quantity;
    }, 0);
  };

  Cart.prototype.updateCartContents = function () {
    if (this.items.length) {
      buy(this.cartNode);
    } else if (!this.purchaseSuccess) {
      empty(this.cartNode);
    } // We want to show the purchase success message and then remove it once the user has
    // added a new item or closed the window


    this.purchaseSuccess = false;
    var itemsNode = this.cartNode.querySelector('.shoppingCart__items');
    itemsNode.innerHTML = '';

    for (var i = 0; i < this.items.length; i++) {
      var item = this.createItemNode(this.items[i], i);
      itemsNode.appendChild(item);
    }

    var removeButtons = this.cartNode.querySelectorAll('.shoppingCart__item .item-remove');

    for (i = 0; i < removeButtons.length; i++) {
      var button = removeButtons[i];
      button.addEventListener('click', function (e) {
        var itemIndex = e.target.getAttribute('data-item-index');
        this.removeItemAtIndex(itemIndex);
        e.preventDefault();
        e.stopPropagation();
        return false;
      }.bind(this));
    }

    this.updateLabel();
    this.updateTotals();

    if (this.items.length > 0) {
      if (typeof window.localStorage !== 'undefined') {
        window.localStorage.setItem('shoppingCart', JSON.stringify(this.toJSON()));
      }
    } else {
      if (typeof window.localStorage !== 'undefined') {
        window.localStorage.removeItem('shoppingCart');
      }
    }
  };

  Cart.prototype.createItemNode = function (item, index) {
    var totalItemAmount = Money.mul(item.amount, Money.floatToAmount(item.quantity));
    var itemNode = this.cartNode.querySelector('.shoppingCart__item__template').firstChild.cloneNode(true);
    itemNode.classList.add('hasQuantity');
    itemNode.querySelector('.item-quantity__value').innerHTML = item.quantity;

    if (item.textField && item.textFieldLabel) {
      var textFieldLabel = item.textFieldLabel; // Custom textbox name does not end in ':'

      if (textFieldLabel && textFieldLabel.lastIndexOf(':') !== textFieldLabel.length - 1) {
        textFieldLabel += ':';
      }

      itemNode.querySelector('.item-textField__label').innerHTML = textFieldLabel;
      itemNode.querySelector('.item-textField__value').innerHTML = item.textField;
    } else {
      itemNode.querySelector('.item-textField__label').hidden = true;
      itemNode.querySelector('.item-textField__value').hidden = true;
    }

    if (item.dropdownSelection) {
      var dropdownName = item.dropdownName; // Dropdown name does not end in ':'

      if (dropdownName && dropdownName.lastIndexOf(':') !== dropdownName.length - 1) {
        dropdownName += ':';
      }

      itemNode.querySelector('.item-dropdownMenu__label').innerHTML = dropdownName;
      itemNode.querySelector('.item-dropdownMenu__value').innerHTML = item.dropdownSelection;
    } else {
      itemNode.querySelector('.item-dropdownMenu__label').hidden = true;
      itemNode.querySelector('.item-dropdownMenu__value').hidden = true;
    }

    itemNode.querySelector('.item-name').innerHTML = item.item_name;

    if (item.amountBeforeDiscount) {
      itemNode.classList.add('shoppingCart__item--discounted');
      var totalItemAmountBeforeDiscount = Money.mul(item.amountBeforeDiscount, Money.floatToAmount(item.quantity));
      itemNode.querySelector('.item-price').innerHTML = this.currencySymbol + Money.format(this.currency_code, totalItemAmountBeforeDiscount);
      itemNode.querySelector('.item-discounted-price').innerHTML = this.currencySymbol + Money.format(this.currency_code, totalItemAmount);
    } else {
      itemNode.querySelector('.item-price').innerHTML = this.currencySymbol + Money.format(this.currency_code, totalItemAmount);
    }

    itemNode.querySelector('.item-remove').setAttribute('data-item-index', index);
    return itemNode;
  };

  Cart.prototype.updateLabel = function () {
    var quantity = this.getQuantity();
    this.cartNode.setAttribute('data-quantity', quantity);

    if (quantity >= 100) {
      this.cartNode.classList.add('shoppingCart--large');
    } else {
      this.cartNode.classList.remove('shoppingCart--large');
    }
  };

  Cart.prototype.updateTotals = function () {
    if (!this.items.length) {
      return;
    }

    var subTotal = this.items.reduce(function (sum, item) {
      return Money.add(Money.floatToAmount(sum), Money.mul(item.amount, Money.floatToAmount(item.quantity)));
    }, '0.00');
    var subTotalNode = this.cartNode.querySelector('.shoppingCart__checkout .subTotal__amount');
    subTotalNode.innerHTML = this.currencySymbol + Money.format(this.currency_code, subTotal);
    var taxTotal = this.items.reduce(function (sum, item) {
      return Money.add(Money.floatToAmount(sum), Money.mul(item.tax || '0.00', Money.floatToAmount(item.quantity)));
    }, '0.00');
    var taxTotalNode = this.cartNode.querySelector('.shoppingCart__checkout .taxTotal__amount');
    taxTotalNode.innerHTML = this.currencySymbol + Money.format(this.currency_code, taxTotal);
    var shippingTotal = this.items.reduce(function (sum, item) {
      return Money.add(Money.floatToAmount(sum), Money.mul(item.shipping || '0.00', Money.floatToAmount(item.quantity)));
    }, '0.00');
    var shippingTotalNode = this.cartNode.querySelector('.shoppingCart__checkout .shippingTotal__amount');
    shippingTotalNode.innerHTML = this.currencySymbol + Money.format(this.currency_code, shippingTotal);
    var grandTotal = Money.add(Money.add(subTotal, taxTotal), shippingTotal);
    var grandTotalNode = this.cartNode.querySelector('.shoppingCart__checkout .grandTotal__amount');
    grandTotalNode.innerHTML = this.currencySymbol + Money.format(this.currency_code, grandTotal);
  };

  function buy(cart) {
    cart.classList.add('shoppingCart--buy');
    cart.classList.remove('shoppingCart--failure');
    cart.classList.remove('shoppingCart--success');
    cart.classList.remove('shoppingCart--empty');
  }

  function failure(cart) {
    cart.classList.remove('shoppingCart--buy');
    cart.classList.add('shoppingCart--failure');
    cart.classList.remove('shoppingCart--success');
    cart.classList.remove('shoppingCart--empty');
  }

  function success(cart) {
    cart.classList.remove('shoppingCart--buy');
    cart.classList.remove('shoppingCart--failure');
    cart.classList.add('shoppingCart--success');
    cart.classList.remove('shoppingCart--empty');
  }

  function empty(cart) {
    cart.classList.remove('shoppingCart--buy');
    cart.classList.remove('shoppingCart--failure');
    cart.classList.remove('shoppingCart--success');
    cart.classList.add('shoppingCart--empty');
  }
  /*
   * Ensure that the amount is in the format xx.xx
   * This is a requirement for the money-math library.
   */


  function getMoneyAmount(value) {
    if (!value || value.match(validMoneyRegex)) {
      return value;
    }

    value = parseFloat(value);
    return Money.floatToAmount(value);
  }

  function getItemData(element) {
    let amount;
    let amountBeforeDiscount;
    var totalAmount = getMoneyAmount(element.getAttribute('data-publishedjs-amount'));

    if (element.getAttribute('data-publishedjs-discount')) {
      amount = Money.subtract(totalAmount, getMoneyAmount(element.getAttribute('data-publishedjs-discount')));
      amountBeforeDiscount = totalAmount;
    } else {
      amount = totalAmount;
    }

    return {
      id: element.getAttribute('data-publishedjs-id'),
      item_name: element.getAttribute('data-publishedjs-item-name'),
      amount,
      amountBeforeDiscount,
      shipping: getMoneyAmount(element.getAttribute('data-publishedjs-shipping')),
      tax: getMoneyAmount(element.getAttribute('data-publishedjs-tax')),
      quantity: parseInt(element.getAttribute('data-publishedjs-quantity'), 10),
      textField: element.getAttribute('data-publishedjs-text-field'),
      textFieldLabel: element.getAttribute('data-publishedjs-text-field-label'),
      dropdownName: element.getAttribute('data-publishedjs-dropdown-name'),
      dropdownSelection: element.getAttribute('data-publishedjs-dropdown-selection')
    };
  }

  new Cart();
  var cartNode = document.getElementsByClassName('shoppingCart')[0];
  var paypalPips = document.getElementsByClassName('paypal-pip');
  var showCart = paypalPips && paypalPips.length > 0 || typeof window.localStorage !== 'undefined' && window.localStorage.getItem('shoppingCart');

  if (showCart && cartNode) {
    cartNode.classList.add('shoppingCart--show');
  }
})();
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';

(function () {
  function toggleMenuClasses() {
    var mobileContent = document.querySelector('.mobile-content');
    document.body.classList.toggle('no-scroll');
    document.body.classList.toggle('mobile-menu-active');
    mobileContent.classList.toggle('active');
    mobileContent.setAttribute('aria-expanded', mobileContent.classList.contains('active'));
  }

  function handleMenuClick(event) {
    if (event) {
      event.preventDefault();
      event.stopPropagation();
    }

    toggleMenuClasses();
  }

  function setUpButtonHandler() {
    // Set the block containing the mobile nav to have a higher z index.
    // This guarantees that the mobile menu overlay will be above all other site content.
    var blockWithFirstNavPip = document.querySelector('.mobile-menu-button--firstnav');

    if (blockWithFirstNavPip) {
      var blockId = blockWithFirstNavPip.getAttribute('data-parent-block-id');
      var parentBlock = document.querySelector(`[data-tower-id="${blockId}"]`);
      parentBlock.style.zIndex = '10';
    }

    var menuButton = document.querySelectorAll('.pip.navigation-pip .mobile-menu-button');

    for (var m = 0; m < menuButton.length; m++) {
      menuButton[m].onclick = handleMenuClick;
    }

    var navLinks = document.querySelectorAll('.mobile-wrapper a');

    for (var i = 0; i < navLinks.length; i++) {
      navLinks[i].addEventListener('click', toggleMenuClasses);
    }
  }

  setUpButtonHandler();
})();
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';

function shouldDockRight(elm) {
  if (!elm) {
    return false;
  }

  var rect = elm.getBoundingClientRect();
  var elmWidth = rect.width;
  var elmLeft = rect.left;
  return elmWidth + elmLeft > window.pageXOffset + window.innerWidth;
}

function shouldDockVerticalLeft(elm) {
  if (!elm) {
    return false;
  }

  var rect = elm.getBoundingClientRect();
  return rect.left < 0;
}

function positionChildNav(elm) {
  if (shouldDockRight(elm)) {
    elm.classList.add('nav-children--right');
  }

  if (shouldDockVerticalLeft(elm)) {
    elm.classList.add('nav-children--vertical--left');
  }
}

function applyPositionToSubnav(elm) {
  if (elm.tagName === 'LI' && elm.classList.contains('link')) {
    return positionChildNav(elm.querySelector('.nav-children'));
  } else if (elm.parentNode) {
    // recursively call to check if the parent node is `li.link`
    return applyPositionToSubnav(elm.parentNode);
  }
}

function handleSubnavEvent(event) {
  applyPositionToSubnav(event.target);
}

function setupSubNavPositioningEventHandlers() {
  var desktopLinkList = document.querySelector('.desktopLinks');

  if (!desktopLinkList) {
    return;
  }

  desktopLinkList.addEventListener('mouseover', handleSubnavEvent);
  desktopLinkList.addEventListener('click', handleSubnavEvent);
  var topLevelLinks = document.querySelectorAll('.desktopLinks > li > a');

  if (!topLevelLinks) {
    return;
  }

  for (var i = 0; i < topLevelLinks.length; i++) {
    topLevelLinks[i].addEventListener('focus', handleSubnavEvent);
  }
} // only execute when in preview or publish mode


if (typeof window !== 'undefined' && window.towerData === undefined) {
  setupSubNavPositioningEventHandlers();
}

if (typeof module !== 'undefined') {
  module.exports = {
    shouldDockRight
  };
}
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';

var MEDIA_GALLERY_SLIDESHOW_SELECTOR = '.media-gallery--slideshow';
var SLIDESHOW_CONTAINER_SELECTOR = '[data-slideshow]';
var SLIDESHOW_IMAGE_SELECTOR = '.slideshow-image';
var SLIDESHOW_BELOW_IMAGE_DESCRIPTOR_SELECTOR = '.image-descriptor--below-image';
var SLIDESHOW_ARROW_LEFT_SELECTOR = '[data-slideshow-left]';
var SLIDESHOW_ARROW_RIGHT_SELECTOR = '[data-slideshow-right]';
var THUMBNAIL_CONTAINER_SELECTOR = '[data-media-gallery-list]';
var THUMBNAIL_WRAPPER_SELECTOR = '[data-slideshow-thumb-selected]';
var THUMBNAIL_IMAGE_SELECTOR = '[data-slideshow-image-selected]';
var SLIDESHOW_MARGIN_OFFSET = 10; // SVG Classlist Polyfill https://github.com/naminho/svg-classlist-polyfill/blob/master/polyfill.js

if (!('classList' in SVGElement.prototype)) {
  Object.defineProperty(SVGElement.prototype, 'classList', {
    get: function get() {
      var _this = this;

      return {
        contains: function contains(className) {
          return _this.className.baseVal.split(' ').indexOf(className) !== -1;
        },
        add: function add(className) {
          return _this.setAttribute('class', _this.getAttribute('class') + ' ' + className);
        },
        remove: function remove(className) {
          var removedClass = _this.getAttribute('class').replace(new RegExp('(\\s|^)'.concat(className, '(\\s|$)'), 'g'), '$2');

          if (_this.classList.contains(className)) {
            _this.setAttribute('class', removedClass);
          }
        },
        toggle: function toggle(className) {
          if (this.contains(className)) {
            this.remove(className);
          } else {
            this.add(className);
          }
        }
      };
    }
  });
}

function scrollToThumbnail(container) {
  const image = container.querySelector('[data-slideshow-thumb-selected="true"]');
  container.scrollLeft = image.offsetLeft - container.offsetWidth / 2 + image.offsetWidth / 2;
}

function incrementSlideCount(slideshow, increment) {
  var animation = slideshow.dataset.animation;
  var column = slideshow.querySelector(SLIDESHOW_CONTAINER_SELECTOR);
  var images = column.querySelectorAll(SLIDESHOW_IMAGE_SELECTOR);
  var numOfSlides = parseInt(column.dataset.slideCount);
  var currentSlide = parseInt(column.dataset.currentSlide);
  var newCurrentSlide = (currentSlide + increment + numOfSlides) % numOfSlides;
  scrollToSlide(slideshow, newCurrentSlide, increment);
  setTimeout(function () {
    setOrder(images, increment, animation, slideshow, newCurrentSlide);
    column.style.transform = 'none';
    column.style.transition = 'none';
  }, 200);
}

function twoImageIncrementSlideCount(slideshow, increment, autoplayOverride) {
  var animation = slideshow.dataset.animation;
  var column = slideshow.querySelector(SLIDESHOW_CONTAINER_SELECTOR);
  var images = column.querySelectorAll(SLIDESHOW_IMAGE_SELECTOR);
  var currentSlide = parseInt(column.dataset.currentSlide);
  var numOfSlides = parseInt(column.dataset.slideCount);
  var firstSlideAndMovingLeft = increment === -1 && currentSlide === 0;
  var lastSlideAndMovingRight = increment === 1 && currentSlide === 1;
  var newIncrement = firstSlideAndMovingLeft || lastSlideAndMovingRight ? -increment : increment;

  if (!firstSlideAndMovingLeft && !lastSlideAndMovingRight || autoplayOverride) {
    var newCurrentSlide = (currentSlide + newIncrement + numOfSlides) % numOfSlides;
    scrollToSlide(slideshow, newCurrentSlide, newIncrement);
    setTimeout(function () {
      setOrder(images, newIncrement, animation, slideshow, newCurrentSlide);
      column.style.transition = 'none';
    }, 200);
  }
}

function setOrder(images, increment, animation, slideshow, newCurrentSlide) {
  for (var i = 0; i < images.length; i++) {
    var image = images[i];
    var imageCount = images.length;
    var order = image.style.order;
    var newOrder;

    if (imageCount === 2) {
      newOrder = order - increment;
    } else if (imageCount === 1) {
      newOrder = 1;
    } else {
      newOrder = (order - increment + imageCount) % imageCount;
    }

    image.style.order = newOrder;

    if (animation === 'fade' && newOrder !== 1) {
      image.classList.add('slideshow-image--transparent');
    } else if (animation === 'fade' && newOrder === 1) {
      image.classList.remove('slideshow-image--transparent');
    }

    adjustArrowHeight(slideshow, images[newCurrentSlide]);
  }
}

function toggleSlideshowPause(slideshow) {
  var playButton = slideshow.querySelector('.slideshow__control--play');
  var pauseButton = slideshow.querySelector('.slideshow__control--pause');

  if (slideshow.dataset.slideshowAutoplayPaused === 'true') {
    playButton.classList.add('slideshow__control--invisible');
    pauseButton.classList.remove('slideshow__control--invisible');
    slideshow.dataset.slideshowAutoplayPaused = 'false';
  } else if (slideshow.dataset.slideshowAutoplayPaused === 'false') {
    pauseButton.classList.add('slideshow__control--invisible');
    playButton.classList.remove('slideshow__control--invisible');
    slideshow.dataset.slideshowAutoplayPaused = 'true';
  }
}

function setUpAutoPlay(slideshow) {
  var numOfSlides = findNumOfSlides(slideshow);

  if (slideshow.dataset.slideshowAutoplay === 'true') {
    var playButton = slideshow.querySelector('.slideshow__control--play');
    var pauseButton = slideshow.querySelector('.slideshow__control--pause');
    pauseButton.classList.add('slideshow__control--invisible');
    slideshow.dataset.slideshowAutoplayPaused = 'true';
    playButton.addEventListener('click', toggleSlideshowPause.bind(null, slideshow));
    pauseButton.addEventListener('click', toggleSlideshowPause.bind(null, slideshow));
    var autoplayTime = slideshow.dataset.slideshowAutoplayTime;
    setInterval(() => {
      if (slideshow.dataset.slideshowAutoplayPaused === 'false') {
        if (numOfSlides === 2) {
          twoImageIncrementSlideCount(slideshow, 1, true);
        } else {
          incrementSlideCount(slideshow, 1);
        }
      }
    }, autoplayTime * 1000);
  }
}

function scrollToSlide(slideshow, slide, increment) {
  var animation = slideshow.dataset.animation;
  var column = slideshow.querySelector(SLIDESHOW_CONTAINER_SELECTOR);
  var numOfSlides = parseInt(column.dataset.slideCount);

  if (numOfSlides === 1) {
    return;
  }

  column.dataset.currentSlide = slide;
  var slideInc = numOfSlides === 2 ? slide : increment;

  if (animation !== 'fade') {
    var percentValue = 1 / numOfSlides * 100 * -1;
    var translateValue = slideInc * percentValue;
    column.style.transform = 'translateX(' + translateValue + '%)';

    if (increment < -1) {
      const left = -100 + 100 * increment;
      column.style.left = left + '%';
    }
  }

  if (animation === 'slide') {
    column.style.transition = 'transform 0.2s ease-in 0s';
  }

  var thumbnailContainer = slideshow.querySelector(THUMBNAIL_CONTAINER_SELECTOR);
  thumbnailContainer.dataset.currentSlide = slide;
  setThumbnailHighlight(thumbnailContainer);
  scrollToThumbnail(thumbnailContainer);
}

function scrollToSelected(slideshow, slideNum) {
  var animation = slideshow.dataset.animation;
  var column = slideshow.querySelector(SLIDESHOW_CONTAINER_SELECTOR);
  var numOfSlides = findNumOfSlides(slideshow);
  var images = slideshow.querySelectorAll(SLIDESHOW_IMAGE_SELECTOR);
  var selectedImage = images[slideNum];
  var selectedImageOrder = selectedImage.style.order;
  var orderChange = selectedImageOrder - 1;
  var currentSlide = column.dataset.currentSlide;
  var increment = slideNum - currentSlide;

  if (increment < -1) {
    setOrder(images, increment, animation, slideshow, slideNum);
    images = slideshow.querySelectorAll(SLIDESHOW_IMAGE_SELECTOR);
    selectedImage = images[slideNum];
    selectedImageOrder = selectedImage.style.order;
    orderChange = selectedImageOrder - 1;
  }

  scrollToSlide(slideshow, slideNum, increment);
  setTimeout(function () {
    setOrder(images, orderChange, animation, slideshow, slideNum);
    column.style.transform = numOfSlides === 2 ? column.style.transform : 'none';
    column.style.transition = 'none';

    if (animation !== 'fade') {
      column.style.left = numOfSlides > 2 ? '-100%' : '0%';
    }
  }, 200);
}

function setThumbnailHighlight(thumbnailContainer) {
  var currentSlide = thumbnailContainer.dataset.currentSlide;
  var thumbnails = thumbnailContainer.querySelectorAll(THUMBNAIL_IMAGE_SELECTOR);
  var thumbnailButtons = thumbnailContainer.querySelectorAll(THUMBNAIL_WRAPPER_SELECTOR);

  for (var i = 0; i < thumbnails.length; i++) {
    var thumbnail = thumbnails[i];
    var slide = thumbnail.dataset.slide;
    var thumbnailButton = thumbnailButtons[i];

    if (slide === currentSlide) {
      thumbnail.classList.add('media-gallery-option--highlighted');
      thumbnailButton.dataset.slideshowThumbSelected = 'true';
    } else {
      thumbnail.classList.remove('media-gallery-option--highlighted');
      thumbnailButton.dataset.slideshowThumbSelected = 'false';
    }
  }
}

function findNumOfSlides(slideshow) {
  var column = slideshow.querySelector(SLIDESHOW_CONTAINER_SELECTOR);
  var numOfSlides = parseInt(column.dataset.slideCount);
  return numOfSlides;
}

function adjustArrowHeight(slideshow, image) {
  var imageHeight = image.querySelector('div:not(.slideshow-image--transparent) .image-media__image-container').offsetHeight;
  var imageDescriptor = image.querySelector(SLIDESHOW_BELOW_IMAGE_DESCRIPTOR_SELECTOR);
  var thumbnailHeight = slideshow.querySelector('.media-gallery-thumbnail-list').offsetHeight + SLIDESHOW_MARGIN_OFFSET;
  var slideshowHeight = slideshow.offsetHeight;
  var imageWithTitleDescriptionHeight = image.offsetHeight;
  var leftButton = slideshow.querySelector(SLIDESHOW_ARROW_LEFT_SELECTOR);
  var rightButton = slideshow.querySelector(SLIDESHOW_ARROW_RIGHT_SELECTOR); // pushArrowByTop is the value the arrows are pushed down to center itself
  // on the slideshow images. Thumbnail height and Image along with Title & Description
  // height are subtracted from the Slideshow height and the remaining whitespace is divided
  // by 2 to obtain the spacing above and below the image.

  var pushArrowByTop = (slideshowHeight - thumbnailHeight - imageWithTitleDescriptionHeight) / 2;

  if (imageDescriptor) {
    leftButton.style.height = `${imageHeight}px`;
    leftButton.style.top = `${pushArrowByTop}px`;
    rightButton.style.height = `${imageHeight}px`;
    rightButton.style.top = `${pushArrowByTop}px`;
  } else {
    leftButton.style.height = '100%';
    leftButton.style.top = '0';
    rightButton.style.height = '100%';
    rightButton.style.top = '0';
  }
}

function setUpSlideshows() {
  var slideshows = document.querySelectorAll(MEDIA_GALLERY_SLIDESHOW_SELECTOR);

  for (var i = 0; i < slideshows.length; i++) {
    var slideshow = slideshows[i];
    var numOfSlides = findNumOfSlides(slideshow);
    var images = slideshow.querySelectorAll(SLIDESHOW_IMAGE_SELECTOR);
    var animation = slideshow.dataset.animation; // eslint-disable-next-line

    Array.prototype.forEach.call(images, function (img, imgIdx) {
      if (imgIdx >= 2 && imgIdx === images.length - 1) {
        imgIdx = 0;
      } else {
        imgIdx += 1;
      }

      if (imgIdx === 1 && animation === 'fade') {
        img.classList.remove('slideshow-image--transparent');
      }

      img.style.order = imgIdx;
    });
    setUpAutoPlay(slideshow);
    var leftButton = slideshow.querySelector(SLIDESHOW_ARROW_LEFT_SELECTOR);
    var rightButton = slideshow.querySelector(SLIDESHOW_ARROW_RIGHT_SELECTOR);
    var image = slideshow.querySelector(SLIDESHOW_IMAGE_SELECTOR);

    if (leftButton && rightButton) {
      adjustArrowHeight(slideshow, image);

      if (numOfSlides === 2) {
        leftButton.addEventListener('click', twoImageIncrementSlideCount.bind(null, slideshow, -1));
        rightButton.addEventListener('click', twoImageIncrementSlideCount.bind(null, slideshow, 1));
      } else {
        leftButton.addEventListener('click', incrementSlideCount.bind(null, slideshow, -1));
        rightButton.addEventListener('click', incrementSlideCount.bind(null, slideshow, 1));
      }
    }

    var thumbnails = slideshow.querySelectorAll(THUMBNAIL_WRAPPER_SELECTOR);

    for (var j = 0; j < thumbnails.length; j++) {
      var thumbnail = thumbnails[j];
      var slideNum = thumbnail.dataset.slide;
      thumbnail.addEventListener('click', scrollToSelected.bind(null, slideshow, slideNum));
    }
  }
}

setUpSlideshows();
/*********/
/* eslint no-var: 0, prefer-const: 0 */
'use strict';

(function () {
  var buttons = document.querySelectorAll('.button-quark');
  var popovers = document.querySelectorAll('.is-popover');
  var closeIcons = document.querySelectorAll('.is-popover .popover-close-button');
  var popoverOverlay = document.getElementById('document-popover-overlay');
  var popoverOpen = false;
  buttons.forEach(function (button) {
    button.addEventListener('click', function () {
      var popoverId = button.getAttribute('data-popover-id');

      if (!popoverOpen && popoverId) {
        if (popoverId !== undefined) {
          var popoverBlock = document.querySelector(`.${popoverId}`);
          popoverBlock.classList.add('popover-visible');
          popoverOverlay.classList.add('visible');
          popoverOpen = true;
          document.body.style.overflow = 'hidden';
          stickPopoverHeader(popoverBlock.querySelector('div[data-pip-type="subGrid"]'));
        }
      }
    });
  });

  const closePopover = function () {
    popovers.forEach(dialog => dialog.classList.remove('popover-visible'));
    popoverOverlay.classList.remove('visible');
    popoverOpen = false;
    document.body.style.overflow = 'initial';
  };

  closeIcons.forEach(function (closeButton) {
    closeButton.addEventListener('click', closePopover);
  });
  popoverOverlay.addEventListener('click', closePopover);

  function stickPopoverHeader(popoverHeader) {
    if (popoverHeader) {
      popoverHeader.style.position = 'sticky';
      popoverHeader.style.top = 0;
      popoverHeader.style.background = 'white';
      popoverHeader.style.zIndex = 2;
    }
  }
})();
/*********/
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