leaflet-src.js

/*
 Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com
 (c) 2010-2013, Vladimir Agafonkin
 (c) 2010-2011, CloudMade
*/
(function (window, document, undefined) {
  var oldL = window.L,
      L = {};
  
  L.version = '0.7.3';
  
  // define Leaflet for Node module pattern loaders, including Browserify
  if (typeof module === 'object' && typeof module.exports === 'object') {
    module.exports = L;
  
  // define Leaflet as an AMD module
  } else if (typeof define === 'function' && define.amd) {
    define(L);
  }
  
  // define Leaflet as a global L variable, saving the original L to restore later if needed
  
  L.noConflict = function () {
    window.L = oldL;
    return this;
  };
  
  window.L = L;
  
  
  /*
   * L.Util contains various utility functions used throughout Leaflet code.
   */
  
  L.Util = {
    extend: function (dest) { // (Object[, Object, ...]) ->
      var sources = Array.prototype.slice.call(arguments, 1),
          i, j, len, src;
  
      for (j = 0, len = sources.length; j < len; j++) {
        src = sources[j] || {};
        for (i in src) {
          if (src.hasOwnProperty(i)) {
            dest[i] = src[i];
          }
        }
      }
      return dest;
    },
  
    bind: function (fn, obj) { // (Function, Object) -> Function
      var args = arguments.length > 2 ? Array.prototype.slice.call(arguments, 2) : null;
      return function () {
        return fn.apply(obj, args || arguments);
      };
    },
  
    stamp: (function () {
      var lastId = 0,
          key = '_leaflet_id';
      return function (obj) {
        obj[key] = obj[key] || ++lastId;
        return obj[key];
      };
    }()),
  
    invokeEach: function (obj, method, context) {
      var i, args;
  
      if (typeof obj === 'object') {
        args = Array.prototype.slice.call(arguments, 3);
  
        for (i in obj) {
          method.apply(context, [i, obj[i]].concat(args));
        }
        return true;
      }
  
      return false;
    },
  
    limitExecByInterval: function (fn, time, context) {
      var lock, execOnUnlock;
  
      return function wrapperFn() {
        var args = arguments;
  
        if (lock) {
          execOnUnlock = true;
          return;
        }
  
        lock = true;
  
        setTimeout(function () {
          lock = false;
  
          if (execOnUnlock) {
            wrapperFn.apply(context, args);
            execOnUnlock = false;
          }
        }, time);
  
        fn.apply(context, args);
      };
    },
  
    falseFn: function () {
      return false;
    },
  
    formatNum: function (num, digits) {
      var pow = Math.pow(10, digits || 5);
      return Math.round(num * pow) / pow;
    },
  
    trim: function (str) {
      return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
    },
  
    splitWords: function (str) {
      return L.Util.trim(str).split(/\s+/);
    },
  
    setOptions: function (obj, options) {
      obj.options = L.extend({}, obj.options, options);
      return obj.options;
    },
  
    getParamString: function (obj, existingUrl, uppercase) {
      var params = [];
      for (var i in obj) {
        params.push(encodeURIComponent(uppercase ? i.toUpperCase() : i) + '=' + encodeURIComponent(obj[i]));
      }
      return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&');
    },
    template: function (str, data) {
      return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) {
        var value = data[key];
        if (value === undefined) {
          throw new Error('No value provided for variable ' + str);
        } else if (typeof value === 'function') {
          value = value(data);
        }
        return value;
      });
    },
  
    isArray: Array.isArray || function (obj) {
      return (Object.prototype.toString.call(obj) === '[object Array]');
    },
  
    emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='
  };
  
  (function () {
  
    // inspired by http://paulirish.com/2011/requestanimationframe-for-smart-animating/
  
    function getPrefixed(name) {
      var i, fn,
          prefixes = ['webkit', 'moz', 'o', 'ms'];
  
      for (i = 0; i < prefixes.length && !fn; i++) {
        fn = window[prefixes[i] + name];
      }
  
      return fn;
    }
  
    var lastTime = 0;
  
    function timeoutDefer(fn) {
      var time = +new Date(),
          timeToCall = Math.max(0, 16 - (time - lastTime));
  
      lastTime = time + timeToCall;
      return window.setTimeout(fn, timeToCall);
    }
  
    var requestFn = window.requestAnimationFrame ||
            getPrefixed('RequestAnimationFrame') || timeoutDefer;
  
    var cancelFn = window.cancelAnimationFrame ||
            getPrefixed('CancelAnimationFrame') ||
            getPrefixed('CancelRequestAnimationFrame') ||
            function (id) { window.clearTimeout(id); };
  
  
    L.Util.requestAnimFrame = function (fn, context, immediate, element) {
      fn = L.bind(fn, context);
  
      if (immediate && requestFn === timeoutDefer) {
        fn();
      } else {
        return requestFn.call(window, fn, element);
      }
    };
  
    L.Util.cancelAnimFrame = function (id) {
      if (id) {
        cancelFn.call(window, id);
      }
    };
  
  }());
  
  // shortcuts for most used utility functions
  L.extend = L.Util.extend;
  L.bind = L.Util.bind;
  L.stamp = L.Util.stamp;
  L.setOptions = L.Util.setOptions;
  
  
  /*
   * L.Class powers the OOP facilities of the library.
   * Thanks to John Resig and Dean Edwards for inspiration!
   */
  
  L.Class = function () {};
  
  L.Class.extend = function (props) {
  
    // extended class with the new prototype
    var NewClass = function () {
  
      // call the constructor
      if (this.initialize) {
        this.initialize.apply(this, arguments);
      }
  
      // call all constructor hooks
      if (this._initHooks) {
        this.callInitHooks();
      }
    };
  
    // instantiate class without calling constructor
    var F = function () {};
    F.prototype = this.prototype;
  
    var proto = new F();
    proto.constructor = NewClass;
  
    NewClass.prototype = proto;
  
    //inherit parent's statics
    for (var i in this) {
      if (this.hasOwnProperty(i) && i !== 'prototype') {
        NewClass[i] = this[i];
      }
    }
  
    // mix static properties into the class
    if (props.statics) {
      L.extend(NewClass, props.statics);
      delete props.statics;
    }
  
    // mix includes into the prototype
    if (props.includes) {
      L.Util.extend.apply(null, [proto].concat(props.includes));
      delete props.includes;
    }
  
    // merge options
    if (props.options && proto.options) {
      props.options = L.extend({}, proto.options, props.options);
    }
  
    // mix given properties into the prototype
    L.extend(proto, props);
  
    proto._initHooks = [];
  
    var parent = this;
    // jshint camelcase: false
    NewClass.__super__ = parent.prototype;
  
    // add method for calling all hooks
    proto.callInitHooks = function () {
  
      if (this._initHooksCalled) { return; }
  
      if (parent.prototype.callInitHooks) {
        parent.prototype.callInitHooks.call(this);
      }
  
      this._initHooksCalled = true;
  
      for (var i = 0, len = proto._initHooks.length; i < len; i++) {
        proto._initHooks[i].call(this);
      }
    };
  
    return NewClass;
  };
  
  
  // method for adding properties to prototype
  L.Class.include = function (props) {
    L.extend(this.prototype, props);
  };
  
  // merge new default options to the Class
  L.Class.mergeOptions = function (options) {
    L.extend(this.prototype.options, options);
  };
  
  // add a constructor hook
  L.Class.addInitHook = function (fn) { // (Function) || (String, args...)
    var args = Array.prototype.slice.call(arguments, 1);
  
    var init = typeof fn === 'function' ? fn : function () {
      this[fn].apply(this, args);
    };
  
    this.prototype._initHooks = this.prototype._initHooks || [];
    this.prototype._initHooks.push(init);
  };
  
  
  /*
   * L.Mixin.Events is used to add custom events functionality to Leaflet classes.
   */
  
  var eventsKey = '_leaflet_events';
  
  L.Mixin = {};
  
  L.Mixin.Events = {
  
    addEventListener: function (types, fn, context) { // (String, Function[, Object]) or (Object[, Object])
  
      // types can be a map of types/handlers
      if (L.Util.invokeEach(types, this.addEventListener, this, fn, context)) { return this; }
  
      var events = this[eventsKey] = this[eventsKey] || {},
          contextId = context && context !== this && L.stamp(context),
          i, len, event, type, indexKey, indexLenKey, typeIndex;
  
      // types can be a string of space-separated words
      types = L.Util.splitWords(types);
  
      for (i = 0, len = types.length; i < len; i++) {
        event = {
          action: fn,
          context: context || this
        };
        type = types[i];
  
        if (contextId) {
          // store listeners of a particular context in a separate hash (if it has an id)
          // gives a major performance boost when removing thousands of map layers
  
          indexKey = type + '_idx';
          indexLenKey = indexKey + '_len';
  
          typeIndex = events[indexKey] = events[indexKey] || {};
  
          if (!typeIndex[contextId]) {
            typeIndex[contextId] = [];
  
            // keep track of the number of keys in the index to quickly check if it's empty
            events[indexLenKey] = (events[indexLenKey] || 0) + 1;
          }
  
          typeIndex[contextId].push(event);
  
  
        } else {
          events[type] = events[type] || [];
          events[type].push(event);
        }
      }
  
      return this;
    },
  
    hasEventListeners: function (type) { // (String) -> Boolean
      var events = this[eventsKey];
      return !!events && ((type in events && events[type].length > 0) ||
                          (type + '_idx' in events && events[type + '_idx_len'] > 0));
    },
  
    removeEventListener: function (types, fn, context) { // ([String, Function, Object]) or (Object[, Object])
  
      if (!this[eventsKey]) {
        return this;
      }
  
      if (!types) {
        return this.clearAllEventListeners();
      }
  
      if (L.Util.invokeEach(types, this.removeEventListener, this, fn, context)) { return this; }
  
      var events = this[eventsKey],
          contextId = context && context !== this && L.stamp(context),
          i, len, type, listeners, j, indexKey, indexLenKey, typeIndex, removed;
  
      types = L.Util.splitWords(types);
  
      for (i = 0, len = types.length; i < len; i++) {
        type = types[i];
        indexKey = type + '_idx';
        indexLenKey = indexKey + '_len';
  
        typeIndex = events[indexKey];
  
        if (!fn) {
          // clear all listeners for a type if function isn't specified
          delete events[type];
          delete events[indexKey];
          delete events[indexLenKey];
  
        } else {
          listeners = contextId && typeIndex ? typeIndex[contextId] : events[type];
  
          if (listeners) {
            for (j = listeners.length - 1; j >= 0; j--) {
              if ((listeners[j].action === fn) && (!context || (listeners[j].context === context))) {
                removed = listeners.splice(j, 1);
                // set the old action to a no-op, because it is possible
                // that the listener is being iterated over as part of a dispatch
                removed[0].action = L.Util.falseFn;
              }
            }
  
            if (context && typeIndex && (listeners.length === 0)) {
              delete typeIndex[contextId];
              events[indexLenKey]--;
            }
          }
        }
      }
  
      return this;
    },
  
    clearAllEventListeners: function () {
      delete this[eventsKey];
      return this;
    },
  
    fireEvent: function (type, data) { // (String[, Object])
      if (!this.hasEventListeners(type)) {
        return this;
      }
  
      var event = L.Util.extend({}, data, { type: type, target: this });
  
      var events = this[eventsKey],
          listeners, i, len, typeIndex, contextId;
  
      if (events[type]) {
        // make sure adding/removing listeners inside other listeners won't cause infinite loop
        listeners = events[type].slice();
  
        for (i = 0, len = listeners.length; i < len; i++) {
          listeners[i].action.call(listeners[i].context, event);
        }
      }
  
      // fire event for the context-indexed listeners as well
      typeIndex = events[type + '_idx'];
  
      for (contextId in typeIndex) {
        listeners = typeIndex[contextId].slice();
  
        if (listeners) {
          for (i = 0, len = listeners.length; i < len; i++) {
            listeners[i].action.call(listeners[i].context, event);
          }
        }
      }
  
      return this;
    },
  
    addOneTimeEventListener: function (types, fn, context) {
  
      if (L.Util.invokeEach(types, this.addOneTimeEventListener, this, fn, context)) { return this; }
  
      var handler = L.bind(function () {
        this
            .removeEventListener(types, fn, context)
            .removeEventListener(types, handler, context);
      }, this);
  
      return this
          .addEventListener(types, fn, context)
          .addEventListener(types, handler, context);
    }
  };
  
  L.Mixin.Events.on = L.Mixin.Events.addEventListener;
  L.Mixin.Events.off = L.Mixin.Events.removeEventListener;
  L.Mixin.Events.once = L.Mixin.Events.addOneTimeEventListener;
  L.Mixin.Events.fire = L.Mixin.Events.fireEvent;
  
  
  /*
   * L.Browser handles different browser and feature detections for internal Leaflet use.
   */
  
  (function () {
  
    var ie = 'ActiveXObject' in window,
      ielt9 = ie && !document.addEventListener,
  
        // terrible browser detection to work around Safari / iOS / Android browser bugs
        ua = navigator.userAgent.toLowerCase(),
        webkit = ua.indexOf('webkit') !== -1,
        chrome = ua.indexOf('chrome') !== -1,
        phantomjs = ua.indexOf('phantom') !== -1,
        android = ua.indexOf('android') !== -1,
        android23 = ua.search('android [23]') !== -1,
      gecko = ua.indexOf('gecko') !== -1,
  
        mobile = typeof orientation !== undefined + '',
        msPointer = window.navigator && window.navigator.msPointerEnabled &&
                  window.navigator.msMaxTouchPoints && !window.PointerEvent,
      pointer = (window.PointerEvent && window.navigator.pointerEnabled && window.navigator.maxTouchPoints) ||
            msPointer,
        retina = ('devicePixelRatio' in window && window.devicePixelRatio > 1) ||
                 ('matchMedia' in window && window.matchMedia('(min-resolution:144dpi)') &&
                  window.matchMedia('(min-resolution:144dpi)').matches),
  
        doc = document.documentElement,
        ie3d = ie && ('transition' in doc.style),
        webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()) && !android23,
        gecko3d = 'MozPerspective' in doc.style,
        opera3d = 'OTransition' in doc.style,
        any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d) && !phantomjs;
  
  
    // PhantomJS has 'ontouchstart' in document.documentElement, but doesn't actually support touch.
    // https://github.com/Leaflet/Leaflet/pull/1434#issuecomment-13843151
  
    var touch = !window.L_NO_TOUCH && !phantomjs && (function () {
  
      var startName = 'ontouchstart';
  
      // IE10+ (We simulate these into touch* events in L.DomEvent and L.DomEvent.Pointer) or WebKit, etc.
      if (pointer || (startName in doc)) {
        return true;
      }
  
      // Firefox/Gecko
      var div = document.createElement('div'),
          supported = false;
  
      if (!div.setAttribute) {
        return false;
      }
      div.setAttribute(startName, 'return;');
  
      if (typeof div[startName] === 'function') {
        supported = true;
      }
  
      div.removeAttribute(startName);
      div = null;
  
      return supported;
    }());
  
  
    L.Browser = {
      ie: ie,
      ielt9: ielt9,
      webkit: webkit,
      gecko: gecko && !webkit && !window.opera && !ie,
  
      android: android,
      android23: android23,
  
      chrome: chrome,
  
      ie3d: ie3d,
      webkit3d: webkit3d,
      gecko3d: gecko3d,
      opera3d: opera3d,
      any3d: any3d,
  
      mobile: mobile,
      mobileWebkit: mobile && webkit,
      mobileWebkit3d: mobile && webkit3d,
      mobileOpera: mobile && window.opera,
  
      touch: touch,
      msPointer: msPointer,
      pointer: pointer,
  
      retina: retina
    };
  
  }());
  
  
  /*
   * L.Point represents a point with x and y coordinates.
   */
  
  L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) {
    this.x = (round ? Math.round(x) : x);
    this.y = (round ? Math.round(y) : y);
  };
  
  L.Point.prototype = {
  
    clone: function () {
      return new L.Point(this.x, this.y);
    },
  
    // non-destructive, returns a new point
    add: function (point) {
      return this.clone()._add(L.point(point));
    },
  
    // destructive, used directly for performance in situations where it's safe to modify existing point
    _add: function (point) {
      this.x += point.x;
      this.y += point.y;
      return this;
    },
  
    subtract: function (point) {
      return this.clone()._subtract(L.point(point));
    },
  
    _subtract: function (point) {
      this.x -= point.x;
      this.y -= point.y;
      return this;
    },
  
    divideBy: function (num) {
      return this.clone()._divideBy(num);
    },
  
    _divideBy: function (num) {
      this.x /= num;
      this.y /= num;
      return this;
    },
  
    multiplyBy: function (num) {
      return this.clone()._multiplyBy(num);
    },
  
    _multiplyBy: function (num) {
      this.x *= num;
      this.y *= num;
      return this;
    },
  
    round: function () {
      return this.clone()._round();
    },
  
    _round: function () {
      this.x = Math.round(this.x);
      this.y = Math.round(this.y);
      return this;
    },
  
    floor: function () {
      return this.clone()._floor();
    },
  
    _floor: function () {
      this.x = Math.floor(this.x);
      this.y = Math.floor(this.y);
      return this;
    },
  
    distanceTo: function (point) {
      point = L.point(point);
  
      var x = point.x - this.x,
          y = point.y - this.y;
  
      return Math.sqrt(x * x + y * y);
    },
  
    equals: function (point) {
      point = L.point(point);
  
      return point.x === this.x &&
             point.y === this.y;
    },
  
    contains: function (point) {
      point = L.point(point);
  
      return Math.abs(point.x) <= Math.abs(this.x) &&
             Math.abs(point.y) <= Math.abs(this.y);
    },
  
    toString: function () {
      return 'Point(' +
              L.Util.formatNum(this.x) + ', ' +
              L.Util.formatNum(this.y) + ')';
    }
  };
  
  L.point = function (x, y, round) {
    if (x instanceof L.Point) {
      return x;
    }
    if (L.Util.isArray(x)) {
      return new L.Point(x[0], x[1]);
    }
    if (x === undefined || x === null) {
      return x;
    }
    return new L.Point(x, y, round);
  };
  
  
  /*
   * L.Bounds represents a rectangular area on the screen in pixel coordinates.
   */
  
  L.Bounds = function (a, b) { //(Point, Point) or Point[]
    if (!a) { return; }
  
    var points = b ? [a, b] : a;
  
    for (var i = 0, len = points.length; i < len; i++) {
      this.extend(points[i]);
    }
  };
  
  L.Bounds.prototype = {
    // extend the bounds to contain the given point
    extend: function (point) { // (Point)
      point = L.point(point);
  
      if (!this.min && !this.max) {
        this.min = point.clone();
        this.max = point.clone();
      } else {
        this.min.x = Math.min(point.x, this.min.x);
        this.max.x = Math.max(point.x, this.max.x);
        this.min.y = Math.min(point.y, this.min.y);
        this.max.y = Math.max(point.y, this.max.y);
      }
      return this;
    },
  
    getCenter: function (round) { // (Boolean) -> Point
      return new L.Point(
              (this.min.x + this.max.x) / 2,
              (this.min.y + this.max.y) / 2, round);
    },
  
    getBottomLeft: function () { // -> Point
      return new L.Point(this.min.x, this.max.y);
    },
  
    getTopRight: function () { // -> Point
      return new L.Point(this.max.x, this.min.y);
    },
  
    getSize: function () {
      return this.max.subtract(this.min);
    },
  
    contains: function (obj) { // (Bounds) or (Point) -> Boolean
      var min, max;
  
      if (typeof obj[0] === 'number' || obj instanceof L.Point) {
        obj = L.point(obj);
      } else {
        obj = L.bounds(obj);
      }
  
      if (obj instanceof L.Bounds) {
        min = obj.min;
        max = obj.max;
      } else {
        min = max = obj;
      }
  
      return (min.x >= this.min.x) &&
             (max.x <= this.max.x) &&
             (min.y >= this.min.y) &&
             (max.y <= this.max.y);
    },
  
    intersects: function (bounds) { // (Bounds) -> Boolean
      bounds = L.bounds(bounds);
  
      var min = this.min,
          max = this.max,
          min2 = bounds.min,
          max2 = bounds.max,
          xIntersects = (max2.x >= min.x) && (min2.x <= max.x),
          yIntersects = (max2.y >= min.y) && (min2.y <= max.y);
  
      return xIntersects && yIntersects;
    },
  
    isValid: function () {
      return !!(this.min && this.max);
    }
  };
  
  L.bounds = function (a, b) { // (Bounds) or (Point, Point) or (Point[])
    if (!a || a instanceof L.Bounds) {
      return a;
    }
    return new L.Bounds(a, b);
  };
  
  
  /*
   * L.Transformation is an utility class to perform simple point transformations through a 2d-matrix.
   */
  
  L.Transformation = function (a, b, c, d) {
    this._a = a;
    this._b = b;
    this._c = c;
    this._d = d;
  };
  
  L.Transformation.prototype = {
    transform: function (point, scale) { // (Point, Number) -> Point
      return this._transform(point.clone(), scale);
    },
  
    // destructive transform (faster)
    _transform: function (point, scale) {
      scale = scale || 1;
      point.x = scale * (this._a * point.x + this._b);
      point.y = scale * (this._c * point.y + this._d);
      return point;
    },
  
    untransform: function (point, scale) {
      scale = scale || 1;
      return new L.Point(
              (point.x / scale - this._b) / this._a,
              (point.y / scale - this._d) / this._c);
    }
  };
  
  
  /*
   * L.DomUtil contains various utility functions for working with DOM.
   */
  
  L.DomUtil = {
    get: function (id) {
      return (typeof id === 'string' ? document.getElementById(id) : id);
    },
  
    getStyle: function (el, style) {
  
      var value = el.style[style];
  
      if (!value && el.currentStyle) {
        value = el.currentStyle[style];
      }
  
      if ((!value || value === 'auto') && document.defaultView) {
        var css = document.defaultView.getComputedStyle(el, null);
        value = css ? css[style] : null;
      }
  
      return value === 'auto' ? null : value;
    },
  
    getViewportOffset: function (element) {
  
      var top = 0,
          left = 0,
          el = element,
          docBody = document.body,
          docEl = document.documentElement,
          pos;
  
      do {
        top  += el.offsetTop  || 0;
        left += el.offsetLeft || 0;
  
        //add borders
        top += parseInt(L.DomUtil.getStyle(el, 'borderTopWidth'), 10) || 0;
        left += parseInt(L.DomUtil.getStyle(el, 'borderLeftWidth'), 10) || 0;
  
        pos = L.DomUtil.getStyle(el, 'position');
  
        if (el.offsetParent === docBody && pos === 'absolute') { break; }
  
        if (pos === 'fixed') {
          top  += docBody.scrollTop  || docEl.scrollTop  || 0;
          left += docBody.scrollLeft || docEl.scrollLeft || 0;
          break;
        }
  
        if (pos === 'relative' && !el.offsetLeft) {
          var width = L.DomUtil.getStyle(el, 'width'),
              maxWidth = L.DomUtil.getStyle(el, 'max-width'),
              r = el.getBoundingClientRect();
  
          if (width !== 'none' || maxWidth !== 'none') {
            left += r.left + el.clientLeft;
          }
  
          //calculate full y offset since we're breaking out of the loop
          top += r.top + (docBody.scrollTop  || docEl.scrollTop  || 0);
  
          break;
        }
  
        el = el.offsetParent;
  
      } while (el);
  
      el = element;
  
      do {
        if (el === docBody) { break; }
  
        top  -= el.scrollTop  || 0;
        left -= el.scrollLeft || 0;
  
        el = el.parentNode;
      } while (el);
  
      return new L.Point(left, top);
    },
  
    documentIsLtr: function () {
      if (!L.DomUtil._docIsLtrCached) {
        L.DomUtil._docIsLtrCached = true;
        L.DomUtil._docIsLtr = L.DomUtil.getStyle(document.body, 'direction') === 'ltr';
      }
      return L.DomUtil._docIsLtr;
    },
  
    create: function (tagName, className, container) {
  
      var el = document.createElement(tagName);
      el.className = className;
  
      if (container) {
        container.appendChild(el);
      }
  
      return el;
    },
  
    hasClass: function (el, name) {
      if (el.classList !== undefined) {
        return el.classList.contains(name);
      }
      var className = L.DomUtil._getClass(el);
      return className.length > 0 && new RegExp('(^|\\s)' + name + '(\\s|$)').test(className);
    },
  
    addClass: function (el, name) {
      if (el.classList !== undefined) {
        var classes = L.Util.splitWords(name);
        for (var i = 0, len = classes.length; i < len; i++) {
          el.classList.add(classes[i]);
        }
      } else if (!L.DomUtil.hasClass(el, name)) {
        var className = L.DomUtil._getClass(el);
        L.DomUtil._setClass(el, (className ? className + ' ' : '') + name);
      }
    },
  
    removeClass: function (el, name) {
      if (el.classList !== undefined) {
        el.classList.remove(name);
      } else {
        L.DomUtil._setClass(el, L.Util.trim((' ' + L.DomUtil._getClass(el) + ' ').replace(' ' + name + ' ', ' ')));
      }
    },
  
    _setClass: function (el, name) {
      if (el.className.baseVal === undefined) {
        el.className = name;
      } else {
        // in case of SVG element
        el.className.baseVal = name;
      }
    },
  
    _getClass: function (el) {
      return el.className.baseVal === undefined ? el.className : el.className.baseVal;
    },
  
    setOpacity: function (el, value) {
  
      if ('opacity' in el.style) {
        el.style.opacity = value;
  
      } else if ('filter' in el.style) {
  
        var filter = false,
            filterName = 'DXImageTransform.Microsoft.Alpha';
  
        // filters collection throws an error if we try to retrieve a filter that doesn't exist
        try {
          filter = el.filters.item(filterName);
        } catch (e) {
          // don't set opacity to 1 if we haven't already set an opacity,
          // it isn't needed and breaks transparent pngs.
          if (value === 1) { return; }
        }
  
        value = Math.round(value * 100);
  
        if (filter) {
          filter.Enabled = (value !== 100);
          filter.Opacity = value;
        } else {
          el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')';
        }
      }
    },
  
    testProp: function (props) {
  
      var style = document.documentElement.style;
  
      for (var i = 0; i < props.length; i++) {
        if (props[i] in style) {
          return props[i];
        }
      }
      return false;
    },
  
    getTranslateString: function (point, rotation) {
      // on WebKit browsers (Chrome/Safari/iOS Safari/Android) using translate3d instead of translate
      // makes animation smoother as it ensures HW accel is used. Firefox 13 doesn't care
      // (same speed either way), Opera 12 doesn't support translate3d
  
      var is3d = L.Browser.webkit3d,
          open = 'translate' + (is3d ? '3d' : '') + '(',
          close = (is3d ? ',0' : '') + ')';
      var translate = open + point.x + 'px,' + point.y + 'px' + close;
      var rotation = !!rotation ? ' rotate(' + rotation + 'deg)' : '';
      return translate + rotation;
    },
  
    getScaleString: function (scale, origin) {
  
      var preTranslateStr = L.DomUtil.getTranslateString(origin.add(origin.multiplyBy(-1 * scale))),
          scaleStr = ' scale(' + scale + ') ';
  
      return preTranslateStr + scaleStr;
    },
  
    setPositionWithVisualRotation: function(el, point, rotation, disable3D) {
      disable3D = disable3D || false;
      this.setPosition(el, point, disable3D, rotation);
    },
  
    setPosition: function (el, point, disable3D, rotation) { // (HTMLElement, Point[, Boolean])
      
      // jshint camelcase: false
      el._leaflet_pos = point;
  
      if (!disable3D && L.Browser.any3d) {
        el.style[L.DomUtil.TRANSFORM] =  L.DomUtil.getTranslateString(point, rotation);
      } else {
        var translate = 'translate3d(' + point.x + 'px,' + point.y + 'px,0)';
        if(rotation) {
          translate += ' rotate(' + rotation + 'deg)';
        }
        el.style.transform = translate;
        el.style.webkitTransform = translate;
      }
    },
  
    getPosition: function (el) {
      // this method is only used for elements previously positioned using setPosition,
      // so it's safe to cache the position for performance
  
      // jshint camelcase: false
      return el._leaflet_pos;
    }
  };
  
  
  // prefix style property names
  
  L.DomUtil.TRANSFORM = L.DomUtil.testProp(
          ['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']);
  
  // webkitTransition comes first because some browser versions that drop vendor prefix don't do
  // the same for the transitionend event, in particular the Android 4.1 stock browser
  
  L.DomUtil.TRANSITION = L.DomUtil.testProp(
          ['webkitTransition', 'transition', 'OTransition', 'MozTransition', 'msTransition']);
  
  L.DomUtil.TRANSITION_END =
          L.DomUtil.TRANSITION === 'webkitTransition' || L.DomUtil.TRANSITION === 'OTransition' ?
          L.DomUtil.TRANSITION + 'End' : 'transitionend';
  
  (function () {
      if ('onselectstart' in document) {
          L.extend(L.DomUtil, {
              disableTextSelection: function () {
                  L.DomEvent.on(window, 'selectstart', L.DomEvent.preventDefault);
              },
  
              enableTextSelection: function () {
                  L.DomEvent.off(window, 'selectstart', L.DomEvent.preventDefault);
              }
          });
      } else {
          var userSelectProperty = L.DomUtil.testProp(
              ['userSelect', 'WebkitUserSelect', 'OUserSelect', 'MozUserSelect', 'msUserSelect']);
  
          L.extend(L.DomUtil, {
              disableTextSelection: function () {
                  if (userSelectProperty) {
                      var style = document.documentElement.style;
                      this._userSelect = style[userSelectProperty];
                      style[userSelectProperty] = 'none';
                  }
              },
  
              enableTextSelection: function () {
                  if (userSelectProperty) {
                      document.documentElement.style[userSelectProperty] = this._userSelect;
                      delete this._userSelect;
                  }
              }
          });
      }
  
    L.extend(L.DomUtil, {
      disableImageDrag: function () {
        L.DomEvent.on(window, 'dragstart', L.DomEvent.preventDefault);
      },
  
      enableImageDrag: function () {
        L.DomEvent.off(window, 'dragstart', L.DomEvent.preventDefault);
      }
    });
  })();
  
  
  /*
   * L.LatLng represents a geographical point with latitude and longitude coordinates.
   */
  
  L.LatLng = function (lat, lng, alt) { // (Number, Number, Number)
    lat = parseFloat(lat);
    lng = parseFloat(lng);
  
    if (isNaN(lat) || isNaN(lng)) {
      throw new Error('Invalid LatLng object: (' + lat + ', ' + lng + ')');
    }
  
    this.lat = lat;
    this.lng = lng;
  
    if (alt !== undefined) {
      this.alt = parseFloat(alt);
    }
  };
  
  L.extend(L.LatLng, {
    DEG_TO_RAD: Math.PI / 180,
    RAD_TO_DEG: 180 / Math.PI,
    MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check
  });
  
  L.LatLng.prototype = {
    equals: function (obj) { // (LatLng) -> Boolean
      if (!obj) { return false; }
  
      obj = L.latLng(obj);
  
      var margin = Math.max(
              Math.abs(this.lat - obj.lat),
              Math.abs(this.lng - obj.lng));
  
      return margin <= L.LatLng.MAX_MARGIN;
    },
  
    toString: function (precision) { // (Number) -> String
      return 'LatLng(' +
              L.Util.formatNum(this.lat, precision) + ', ' +
              L.Util.formatNum(this.lng, precision) + ')';
    },
  
    // Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula
    // TODO move to projection code, LatLng shouldn't know about Earth
    distanceTo: function (other) { // (LatLng) -> Number
      other = L.latLng(other);
  
      var R = 6378137, // earth radius in meters
          d2r = L.LatLng.DEG_TO_RAD,
          dLat = (other.lat - this.lat) * d2r,
          dLon = (other.lng - this.lng) * d2r,
          lat1 = this.lat * d2r,
          lat2 = other.lat * d2r,
          sin1 = Math.sin(dLat / 2),
          sin2 = Math.sin(dLon / 2);
  
      var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2);
  
      return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    },
  
    wrap: function (a, b) { // (Number, Number) -> LatLng
      var lng = this.lng;
  
      a = a || -180;
      b = b ||  180;
  
      lng = (lng + b) % (b - a) + (lng < a || lng === b ? b : a);
  
      return new L.LatLng(this.lat, lng);
    }
  };
  
  L.latLng = function (a, b) { // (LatLng) or ([Number, Number]) or (Number, Number)
    if (a instanceof L.LatLng) {
      return a;
    }
    if (L.Util.isArray(a)) {
      if (typeof a[0] === 'number' || typeof a[0] === 'string') {
        return new L.LatLng(a[0], a[1], a[2]);
      } else {
        return null;
      }
    }
    if (a === undefined || a === null) {
      return a;
    }
    if (typeof a === 'object' && 'lat' in a) {
      return new L.LatLng(a.lat, 'lng' in a ? a.lng : a.lon);
    }
    if (b === undefined) {
      return null;
    }
    return new L.LatLng(a, b);
  };
  
  
  
  /*
   * L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
   */
  
  L.LatLngBounds = function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[])
    if (!southWest) { return; }
  
    var latlngs = northEast ? [southWest, northEast] : southWest;
  
    for (var i = 0, len = latlngs.length; i < len; i++) {
      this.extend(latlngs[i]);
    }
  };
  
  L.LatLngBounds.prototype = {
    // extend the bounds to contain the given point or bounds
    extend: function (obj) { // (LatLng) or (LatLngBounds)
      if (!obj) { return this; }
  
      var latLng = L.latLng(obj);
      if (latLng !== null) {
        obj = latLng;
      } else {
        obj = L.latLngBounds(obj);
      }
  
      if (obj instanceof L.LatLng) {
        if (!this._southWest && !this._northEast) {
          this._southWest = new L.LatLng(obj.lat, obj.lng);
          this._northEast = new L.LatLng(obj.lat, obj.lng);
        } else {
          this._southWest.lat = Math.min(obj.lat, this._southWest.lat);
          this._southWest.lng = Math.min(obj.lng, this._southWest.lng);
  
          this._northEast.lat = Math.max(obj.lat, this._northEast.lat);
          this._northEast.lng = Math.max(obj.lng, this._northEast.lng);
        }
      } else if (obj instanceof L.LatLngBounds) {
        this.extend(obj._southWest);
        this.extend(obj._northEast);
      }
      return this;
    },
  
    // extend the bounds by a percentage
    pad: function (bufferRatio) { // (Number) -> LatLngBounds
      var sw = this._southWest,
          ne = this._northEast,
          heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio,
          widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio;
  
      return new L.LatLngBounds(
              new L.LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer),
              new L.LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer));
    },
  
    getCenter: function () { // -> LatLng
      return new L.LatLng(
              (this._southWest.lat + this._northEast.lat) / 2,
              (this._southWest.lng + this._northEast.lng) / 2);
    },
  
    getSouthWest: function () {
      return this._southWest;
    },
  
    getNorthEast: function () {
      return this._northEast;
    },
  
    getNorthWest: function () {
      return new L.LatLng(this.getNorth(), this.getWest());
    },
  
    getSouthEast: function () {
      return new L.LatLng(this.getSouth(), this.getEast());
    },
  
    getWest: function () {
      return this._southWest.lng;
    },
  
    getSouth: function () {
      return this._southWest.lat;
    },
  
    getEast: function () {
      return this._northEast.lng;
    },
  
    getNorth: function () {
      return this._northEast.lat;
    },
  
    contains: function (obj) { // (LatLngBounds) or (LatLng) -> Boolean
      if (typeof obj[0] === 'number' || obj instanceof L.LatLng) {
        obj = L.latLng(obj);
      } else {
        obj = L.latLngBounds(obj);
      }
  
      var sw = this._southWest,
          ne = this._northEast,
          sw2, ne2;
  
      if (obj instanceof L.LatLngBounds) {
        sw2 = obj.getSouthWest();
        ne2 = obj.getNorthEast();
      } else {
        sw2 = ne2 = obj;
      }
  
      return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
             (sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
    },
  
    intersects: function (bounds) { // (LatLngBounds)
      bounds = L.latLngBounds(bounds);
  
      var sw = this._southWest,
          ne = this._northEast,
          sw2 = bounds.getSouthWest(),
          ne2 = bounds.getNorthEast(),
  
          latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat),
          lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng);
  
      return latIntersects && lngIntersects;
    },
  
    toBBoxString: function () {
      return [this.getWest(), this.getSouth(), this.getEast(), this.getNorth()].join(',');
    },
  
    equals: function (bounds) { // (LatLngBounds)
      if (!bounds) { return false; }
  
      bounds = L.latLngBounds(bounds);
  
      return this._southWest.equals(bounds.getSouthWest()) &&
             this._northEast.equals(bounds.getNorthEast());
    },
  
    isValid: function () {
      return !!(this._southWest && this._northEast);
    }
  };
  
  //TODO International date line?
  
  L.latLngBounds = function (a, b) { // (LatLngBounds) or (LatLng, LatLng)
    if (!a || a instanceof L.LatLngBounds) {
      return a;
    }
    return new L.LatLngBounds(a, b);
  };
  
  
  /*
   * L.Projection contains various geographical projections used by CRS classes.
   */
  
  L.Projection = {};
  
  
  /*
   * Spherical Mercator is the most popular map projection, used by EPSG:3857 CRS used by default.
   */
  
  L.Projection.SphericalMercator = {
    MAX_LATITUDE: 85.0511287798,
  
    project: function (latlng) { // (LatLng) -> Point
      var d = L.LatLng.DEG_TO_RAD,
          max = this.MAX_LATITUDE,
          lat = Math.max(Math.min(max, latlng.lat), -max),
          x = latlng.lng * d,
          y = lat * d;
  
      y = Math.log(Math.tan((Math.PI / 4) + (y / 2)));
  
      return new L.Point(x, y);
    },
  
    unproject: function (point) { // (Point, Boolean) -> LatLng
      var d = L.LatLng.RAD_TO_DEG,
          lng = point.x * d,
          lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d;
  
      return new L.LatLng(lat, lng);
    }
  };
  
  
  /*
   * Simple equirectangular (Plate Carree) projection, used by CRS like EPSG:4326 and Simple.
   */
  
  L.Projection.LonLat = {
    project: function (latlng) {
      return new L.Point(latlng.lng, latlng.lat);
    },
  
    unproject: function (point) {
      return new L.LatLng(point.y, point.x);
    }
  };
  
  
  /*
   * L.CRS is a base object for all defined CRS (Coordinate Reference Systems) in Leaflet.
   */
  
  L.CRS = {
    latLngToPoint: function (latlng, zoom) { // (LatLng, Number) -> Point
      var projectedPoint = this.projection.project(latlng),
          scale = this.scale(zoom);
  
      return this.transformation._transform(projectedPoint, scale);
    },
  
    pointToLatLng: function (point, zoom) { // (Point, Number[, Boolean]) -> LatLng
      var scale = this.scale(zoom),
          untransformedPoint = this.transformation.untransform(point, scale);
  
      return this.projection.unproject(untransformedPoint);
    },
  
    project: function (latlng) {
      return this.projection.project(latlng);
    },
  
    scale: function (zoom) {
      return 256 * Math.pow(2, zoom);
    },
  
    getSize: function (zoom) {
      var s = this.scale(zoom);
      return L.point(s, s);
    }
  };
  
  
  /*
   * A simple CRS that can be used for flat non-Earth maps like panoramas or game maps.
   */
  
  L.CRS.Simple = L.extend({}, L.CRS, {
    projection: L.Projection.LonLat,
    transformation: new L.Transformation(1, 0, -1, 0),
  
    scale: function (zoom) {
      return Math.pow(2, zoom);
    }
  });
  
  
  /*
   * L.CRS.EPSG3857 (Spherical Mercator) is the most common CRS for web mapping
   * and is used by Leaflet by default.
   */
  
  L.CRS.EPSG3857 = L.extend({}, L.CRS, {
    code: 'EPSG:3857',
  
    projection: L.Projection.SphericalMercator,
    transformation: new L.Transformation(0.5 / Math.PI, 0.5, -0.5 / Math.PI, 0.5),
  
    project: function (latlng) { // (LatLng) -> Point
      var projectedPoint = this.projection.project(latlng),
          earthRadius = 6378137;
      return projectedPoint.multiplyBy(earthRadius);
    }
  });
  
  L.CRS.EPSG900913 = L.extend({}, L.CRS.EPSG3857, {
    code: 'EPSG:900913'
  });
  
  
  /*
   * L.CRS.EPSG4326 is a CRS popular among advanced GIS specialists.
   */
  
  L.CRS.EPSG4326 = L.extend({}, L.CRS, {
    code: 'EPSG:4326',
  
    projection: L.Projection.LonLat,
    transformation: new L.Transformation(1 / 360, 0.5, -1 / 360, 0.5)
  });
  
  
  /*
   * L.Map is the central class of the API - it is used to create a map.
   */
  
  L.Map = L.Class.extend({
  
    includes: L.Mixin.Events,
  
    options: {
      crs: L.CRS.EPSG3857,
  
      /*
      center: LatLng,
      zoom: Number,
      layers: Array,
      */
  
      fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android23,
      trackResize: true,
      markerZoomAnimation: L.DomUtil.TRANSITION && L.Browser.any3d
    },
  
    initialize: function (id, options) { // (HTMLElement or String, Object)
      options = L.setOptions(this, options);
  
  
      this._initContainer(id);
      this._initLayout();
  
      // hack for https://github.com/Leaflet/Leaflet/issues/1980
      this._onResize = L.bind(this._onResize, this);
  
      this._initEvents();
  
      if (options.maxBounds) {
        this.setMaxBounds(options.maxBounds);
      }
  
      if (options.center && options.zoom !== undefined) {
        this.setView(L.latLng(options.center), options.zoom, {reset: true});
      }
  
      this._handlers = [];
  
      this._layers = {};
      this._zoomBoundLayers = {};
      this._tileLayersNum = 0;
  
      this.callInitHooks();
  
      this._addLayers(options.layers);
    },
  
  
    // public methods that modify map state
  
    // replaced by animation-powered implementation in Map.PanAnimation.js
    setView: function (center, zoom) {
      zoom = zoom === undefined ? this.getZoom() : zoom;
      this._resetView(L.latLng(center), this._limitZoom(zoom));
      return this;
    },
  
    setZoom: function (zoom, options) {
      if (!this._loaded) {
        this._zoom = this._limitZoom(zoom);
        return this;
      }
      return this.setView(this.getCenter(), zoom, {zoom: options});
    },
  
    zoomIn: function (delta, options) {
      return this.setZoom(this._zoom + (delta || 1), options);
    },
  
    zoomOut: function (delta, options) {
      return this.setZoom(this._zoom - (delta || 1), options);
    },
  
    setZoomAround: function (latlng, zoom, options) {
      var scale = this.getZoomScale(zoom),
          viewHalf = this.getSize().divideBy(2),
          containerPoint = latlng instanceof L.Point ? latlng : this.latLngToContainerPoint(latlng),
  
          centerOffset = containerPoint.subtract(viewHalf).multiplyBy(1 - 1 / scale),
          newCenter = this.containerPointToLatLng(viewHalf.add(centerOffset));
  
      return this.setView(newCenter, zoom, {zoom: options});
    },
  
    fitBounds: function (bounds, options) {
  
      options = options || {};
      bounds = bounds.getBounds ? bounds.getBounds() : L.latLngBounds(bounds);
  
      var paddingTL = L.point(options.paddingTopLeft || options.padding || [0, 0]),
          paddingBR = L.point(options.paddingBottomRight || options.padding || [0, 0]),
  
          zoom = this.getBoundsZoom(bounds, false, paddingTL.add(paddingBR)),
          paddingOffset = paddingBR.subtract(paddingTL).divideBy(2),
  
          swPoint = this.project(bounds.getSouthWest(), zoom),
          nePoint = this.project(bounds.getNorthEast(), zoom),
          center = this.unproject(swPoint.add(nePoint).divideBy(2).add(paddingOffset), zoom);
  
      zoom = options && options.maxZoom ? Math.min(options.maxZoom, zoom) : zoom;
  
      return this.setView(center, zoom, options);
    },
  
    fitWorld: function (options) {
      return this.fitBounds([[-90, -180], [90, 180]], options);
    },
  
    panTo: function (center, options) { // (LatLng)
      return this.setView(center, this._zoom, {pan: options});
    },
  
    panBy: function (offset) { // (Point)
      // replaced with animated panBy in Map.PanAnimation.js
      this.fire('movestart');
  
      this._rawPanBy(L.point(offset));
  
      this.fire('move');
      return this.fire('moveend');
    },
  
    setMaxBounds: function (bounds) {
      bounds = L.latLngBounds(bounds);
  
      this.options.maxBounds = bounds;
  
      if (!bounds) {
        return this.off('moveend', this._panInsideMaxBounds, this);
      }
  
      if (this._loaded) {
        this._panInsideMaxBounds();
      }
  
      return this.on('moveend', this._panInsideMaxBounds, this);
    },
  
    panInsideBounds: function (bounds, options) {
      var center = this.getCenter(),
        newCenter = this._limitCenter(center, this._zoom, bounds);
  
      if (center.equals(newCenter)) { return this; }
  
      return this.panTo(newCenter, options);
    },
  
    addLayer: function (layer) {
      // TODO method is too big, refactor
  
      var id = L.stamp(layer);
  
      if (this._layers[id]) { return this; }
  
      this._layers[id] = layer;
  
      // TODO getMaxZoom, getMinZoom in ILayer (instead of options)
      if (layer.options && (!isNaN(layer.options.maxZoom) || !isNaN(layer.options.minZoom))) {
        this._zoomBoundLayers[id] = layer;
        this._updateZoomLevels();
      }
  
      // TODO looks ugly, refactor!!!
      if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
        this._tileLayersNum++;
        this._tileLayersToLoad++;
        layer.on('load', this._onTileLayerLoad, this);
      }
  
      if (this._loaded) {
        this._layerAdd(layer);
      }
  
      return this;
    },
  
    removeLayer: function (layer) {
      var id = L.stamp(layer);
  
      if (!this._layers[id]) { return this; }
  
      if (this._loaded) {
        layer.onRemove(this);
      }
  
      delete this._layers[id];
  
      if (this._loaded) {
        this.fire('layerremove', {layer: layer});
      }
  
      if (this._zoomBoundLayers[id]) {
        delete this._zoomBoundLayers[id];
        this._updateZoomLevels();
      }
  
      // TODO looks ugly, refactor
      if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
        this._tileLayersNum--;
        this._tileLayersToLoad--;
        layer.off('load', this._onTileLayerLoad, this);
      }
  
      return this;
    },
  
    hasLayer: function (layer) {
      if (!layer) { return false; }
  
      return (L.stamp(layer) in this._layers);
    },
  
    eachLayer: function (method, context) {
      for (var i in this._layers) {
        method.call(context, this._layers[i]);
      }
      return this;
    },
  
    invalidateSize: function (options) {
      if (!this._loaded) { return this; }
  
      options = L.extend({
        animate: false,
        pan: true
      }, options === true ? {animate: true} : options);
  
      var oldSize = this.getSize();
      this._sizeChanged = true;
      this._initialCenter = null;
  
      var newSize = this.getSize(),
          oldCenter = oldSize.divideBy(2).round(),
          newCenter = newSize.divideBy(2).round(),
          offset = oldCenter.subtract(newCenter);
  
      if (!offset.x && !offset.y) { return this; }
  
      if (options.animate && options.pan) {
        this.panBy(offset);
  
      } else {
        if (options.pan) {
          this._rawPanBy(offset);
        }
  
        this.fire('move');
  
        if (options.debounceMoveend) {
          clearTimeout(this._sizeTimer);
          this._sizeTimer = setTimeout(L.bind(this.fire, this, 'moveend'), 200);
        } else {
          this.fire('moveend');
        }
      }
  
      return this.fire('resize', {
        oldSize: oldSize,
        newSize: newSize
      });
    },
  
    // TODO handler.addTo
    addHandler: function (name, HandlerClass) {
      if (!HandlerClass) { return this; }
  
      var handler = this[name] = new HandlerClass(this);
  
      this._handlers.push(handler);
  
      if (this.options[name]) {
        handler.enable();
      }
  
      return this;
    },
  
    remove: function () {
      if (this._loaded) {
        this.fire('unload');
      }
  
      this._initEvents('off');
  
      try {
        // throws error in IE6-8
        delete this._container._leaflet;
      } catch (e) {
        this._container._leaflet = undefined;
      }
  
      this._clearPanes();
      if (this._clearControlPos) {
        this._clearControlPos();
      }
  
      this._clearHandlers();
  
      return this;
    },
  
  
    // public methods for getting map state
  
    getCenter: function () { // (Boolean) -> LatLng
      this._checkIfLoaded();
  
      if (this._initialCenter && !this._moved()) {
        return this._initialCenter;
      }
      return this.layerPointToLatLng(this._getCenterLayerPoint());
    },
  
    getZoom: function () {
      return this._zoom;
    },
  
    getBounds: function () {
      var bounds = this.getPixelBounds(),
          sw = this.unproject(bounds.getBottomLeft()),
          ne = this.unproject(bounds.getTopRight());
  
      return new L.LatLngBounds(sw, ne);
    },
  
    getMinZoom: function () {
      return this.options.minZoom === undefined ?
        (this._layersMinZoom === undefined ? 0 : this._layersMinZoom) :
        this.options.minZoom;
    },
  
    getMaxZoom: function () {
      return this.options.maxZoom === undefined ?
        (this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom) :
        this.options.maxZoom;
    },
  
    getBoundsZoom: function (bounds, inside, padding) { // (LatLngBounds[, Boolean, Point]) -> Number
      bounds = L.latLngBounds(bounds);
  
      var zoom = this.getMinZoom() - (inside ? 1 : 0),
          maxZoom = this.getMaxZoom(),
          size = this.getSize(),
  
          nw = bounds.getNorthWest(),
          se = bounds.getSouthEast(),
  
          zoomNotFound = true,
          boundsSize;
  
      padding = L.point(padding || [0, 0]);
  
      do {
        zoom++;
        boundsSize = this.project(se, zoom).subtract(this.project(nw, zoom)).add(padding);
        zoomNotFound = !inside ? size.contains(boundsSize) : boundsSize.x < size.x || boundsSize.y < size.y;
  
      } while (zoomNotFound && zoom <= maxZoom);
  
      if (zoomNotFound && inside) {
        return null;
      }
  
      return inside ? zoom : zoom - 1;
    },
  
    getSize: function () {
      if (!this._size || this._sizeChanged) {
        this._size = new L.Point(
          this._container.clientWidth,
          this._container.clientHeight);
  
        this._sizeChanged = false;
      }
      return this._size.clone();
    },
  
    getPixelBounds: function () {
      var topLeftPoint = this._getTopLeftPoint();
      return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
    },
  
    getPixelOrigin: function () {
      this._checkIfLoaded();
      return this._initialTopLeftPoint;
    },
  
    getPanes: function () {
      return this._panes;
    },
  
    getContainer: function () {
      return this._container;
    },
  
  
    // TODO replace with universal implementation after refactoring projections
  
    getZoomScale: function (toZoom) {
      var crs = this.options.crs;
      return crs.scale(toZoom) / crs.scale(this._zoom);
    },
  
    getScaleZoom: function (scale) {
      return this._zoom + (Math.log(scale) / Math.LN2);
    },
  
  
    // conversion methods
  
    project: function (latlng, zoom) { // (LatLng[, Number]) -> Point
      zoom = zoom === undefined ? this._zoom : zoom;
      return this.options.crs.latLngToPoint(L.latLng(latlng), zoom);
    },
  
    unproject: function (point, zoom) { // (Point[, Number]) -> LatLng
      zoom = zoom === undefined ? this._zoom : zoom;
      return this.options.crs.pointToLatLng(L.point(point), zoom);
    },
  
    layerPointToLatLng: function (point) { // (Point)
      var projectedPoint = L.point(point).add(this.getPixelOrigin());
      return this.unproject(projectedPoint);
    },
  
    latLngToLayerPoint: function (latlng) { // (LatLng)
      var projectedPoint = this.project(L.latLng(latlng))._round();
      return projectedPoint._subtract(this.getPixelOrigin());
    },
  
    containerPointToLayerPoint: function (point) { // (Point)
      return L.point(point).subtract(this._getMapPanePos());
    },
  
    layerPointToContainerPoint: function (point) { // (Point)
      return L.point(point).add(this._getMapPanePos());
    },
  
    containerPointToLatLng: function (point) {
      var layerPoint = this.containerPointToLayerPoint(L.point(point));
      return this.layerPointToLatLng(layerPoint);
    },
  
    latLngToContainerPoint: function (latlng) {
      return this.layerPointToContainerPoint(this.latLngToLayerPoint(L.latLng(latlng)));
    },
  
    mouseEventToContainerPoint: function (e) { // (MouseEvent)
      return L.DomEvent.getMousePosition(e, this._container);
    },
  
    mouseEventToLayerPoint: function (e) { // (MouseEvent)
      return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
    },
  
    mouseEventToLatLng: function (e) { // (MouseEvent)
      return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
    },
  
  
    // map initialization methods
  
    _initContainer: function (id) {
      var container = this._container = L.DomUtil.get(id);
  
      if (!container) {
        throw new Error('Map container not found.');
      } else if (container._leaflet) {
        throw new Error('Map container is already initialized.');
      }
  
      container._leaflet = true;
    },
  
    _initLayout: function () {
      var container = this._container;
  
      L.DomUtil.addClass(container, 'leaflet-container' +
        (L.Browser.touch ? ' leaflet-touch' : '') +
        (L.Browser.retina ? ' leaflet-retina' : '') +
        (L.Browser.ielt9 ? ' leaflet-oldie' : '') +
        (this.options.fadeAnimation ? ' leaflet-fade-anim' : ''));
  
      var position = L.DomUtil.getStyle(container, 'position');
  
      if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') {
        container.style.position = 'relative';
      }
  
      this._initPanes();
  
      if (this._initControlPos) {
        this._initControlPos();
      }
    },
  
    _initPanes: function () {
      var panes = this._panes = {};
  
      this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container);
  
      this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane);
      panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane);
      panes.shadowPane = this._createPane('leaflet-shadow-pane');
      panes.overlayPane = this._createPane('leaflet-overlay-pane');
      panes.markerPane = this._createPane('leaflet-marker-pane');
      panes.popupPane = this._createPane('leaflet-popup-pane');
  
      var zoomHide = ' leaflet-zoom-hide';
  
      if (!this.options.markerZoomAnimation) {
        L.DomUtil.addClass(panes.markerPane, zoomHide);
        L.DomUtil.addClass(panes.shadowPane, zoomHide);
        L.DomUtil.addClass(panes.popupPane, zoomHide);
      }
    },
  
    _createPane: function (className, container) {
      return L.DomUtil.create('div', className, container || this._panes.objectsPane);
    },
  
    _clearPanes: function () {
      this._container.removeChild(this._mapPane);
    },
  
    _addLayers: function (layers) {
      layers = layers ? (L.Util.isArray(layers) ? layers : [layers]) : [];
  
      for (var i = 0, len = layers.length; i < len; i++) {
        this.addLayer(layers[i]);
      }
    },
  
  
    // private methods that modify map state
  
    _resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) {
  
      var zoomChanged = (this._zoom !== zoom);
  
      if (!afterZoomAnim) {
        this.fire('movestart');
  
        if (zoomChanged) {
          this.fire('zoomstart');
        }
      }
  
      this._zoom = zoom;
      this._initialCenter = center;
  
      this._initialTopLeftPoint = this._getNewTopLeftPoint(center);
  
      if (!preserveMapOffset) {
        L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0));
      } else {
        this._initialTopLeftPoint._add(this._getMapPanePos());
      }
  
      this._tileLayersToLoad = this._tileLayersNum;
  
      var loading = !this._loaded;
      this._loaded = true;
  
      this.fire('viewreset', {hard: !preserveMapOffset});
  
      if (loading) {
        this.fire('load');
        this.eachLayer(this._layerAdd, this);
      }
  
      this.fire('move');
  
      if (zoomChanged || afterZoomAnim) {
        this.fire('zoomend');
      }
  
      this.fire('moveend', {hard: !preserveMapOffset});
    },
  
    _rawPanBy: function (offset) {
      L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
    },
  
    _getZoomSpan: function () {
      return this.getMaxZoom() - this.getMinZoom();
    },
  
    _updateZoomLevels: function () {
      var i,
        minZoom = Infinity,
        maxZoom = -Infinity,
        oldZoomSpan = this._getZoomSpan();
  
      for (i in this._zoomBoundLayers) {
        var layer = this._zoomBoundLayers[i];
        if (!isNaN(layer.options.minZoom)) {
          minZoom = Math.min(minZoom, layer.options.minZoom);
        }
        if (!isNaN(layer.options.maxZoom)) {
          maxZoom = Math.max(maxZoom, layer.options.maxZoom);
        }
      }
  
      if (i === undefined) { // we have no tilelayers
        this._layersMaxZoom = this._layersMinZoom = undefined;
      } else {
        this._layersMaxZoom = maxZoom;
        this._layersMinZoom = minZoom;
      }
  
      if (oldZoomSpan !== this._getZoomSpan()) {
        this.fire('zoomlevelschange');
      }
    },
  
    _panInsideMaxBounds: function () {
      this.panInsideBounds(this.options.maxBounds);
    },
  
    _checkIfLoaded: function () {
      if (!this._loaded) {
        throw new Error('Set map center and zoom first.');
      }
    },
  
    // map events
  
    _initEvents: function (onOff) {
      if (!L.DomEvent) { return; }
  
      onOff = onOff || 'on';
  
      L.DomEvent[onOff](this._container, 'click', this._onMouseClick, this);
  
      var events = ['dblclick', 'mousedown', 'mouseup', 'mouseenter',
                    'mouseleave', 'mousemove', 'contextmenu'],
          i, len;
  
      for (i = 0, len = events.length; i < len; i++) {
        L.DomEvent[onOff](this._container, events[i], this._fireMouseEvent, this);
      }
  
      if (this.options.trackResize) {
        L.DomEvent[onOff](window, 'resize', this._onResize, this);
      }
    },
  
    _onResize: function () {
      L.Util.cancelAnimFrame(this._resizeRequest);
      this._resizeRequest = L.Util.requestAnimFrame(
              function () { this.invalidateSize({debounceMoveend: true}); }, this, false, this._container);
    },
  
    _onMouseClick: function (e) {
      if (!this._loaded || (!e._simulated &&
              ((this.dragging && this.dragging.moved()) ||
               (this.boxZoom  && this.boxZoom.moved()))) ||
                  L.DomEvent._skipped(e)) { return; }
  
      this.fire('preclick');
      this._fireMouseEvent(e);
    },
  
    _fireMouseEvent: function (e) {
      if (!this._loaded || L.DomEvent._skipped(e)) { return; }
  
      var type = e.type;
  
      type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type));
  
      if (!this.hasEventListeners(type)) { return; }
  
      if (type === 'contextmenu') {
        L.DomEvent.preventDefault(e);
      }
  
      var containerPoint = this.mouseEventToContainerPoint(e),
          layerPoint = this.containerPointToLayerPoint(containerPoint),
          latlng = this.layerPointToLatLng(layerPoint);
  
      this.fire(type, {
        latlng: latlng,
        layerPoint: layerPoint,
        containerPoint: containerPoint,
        originalEvent: e
      });
    },
  
    _onTileLayerLoad: function () {
      this._tileLayersToLoad--;
      if (this._tileLayersNum && !this._tileLayersToLoad) {
        this.fire('tilelayersload');
      }
    },
  
    _clearHandlers: function () {
      for (var i = 0, len = this._handlers.length; i < len; i++) {
        this._handlers[i].disable();
      }
    },
  
    whenReady: function (callback, context) {
      if (this._loaded) {
        callback.call(context || this, this);
      } else {
        this.on('load', callback, context);
      }
      return this;
    },
  
    _layerAdd: function (layer) {
      layer.onAdd(this);
      this.fire('layeradd', {layer: layer});
    },
  
  
    // private methods for getting map state
  
    _getMapPanePos: function () {
      return L.DomUtil.getPosition(this._mapPane);
    },
  
    _moved: function () {
      var pos = this._getMapPanePos();
      return pos && !pos.equals([0, 0]);
    },
  
    _getTopLeftPoint: function () {
      return this.getPixelOrigin().subtract(this._getMapPanePos());
    },
  
    _getNewTopLeftPoint: function (center, zoom) {
      var viewHalf = this.getSize()._divideBy(2);
      // TODO round on display, not calculation to increase precision?
      return this.project(center, zoom)._subtract(viewHalf)._round();
    },
  
    _latLngToNewLayerPoint: function (latlng, newZoom, newCenter) {
      var topLeft = this._getNewTopLeftPoint(newCenter, newZoom).add(this._getMapPanePos());
      return this.project(latlng, newZoom)._subtract(topLeft);
    },
  
    // layer point of the current center
    _getCenterLayerPoint: function () {
      return this.containerPointToLayerPoint(this.getSize()._divideBy(2));
    },
  
    // offset of the specified place to the current center in pixels
    _getCenterOffset: function (latlng) {
      return this.latLngToLayerPoint(latlng).subtract(this._getCenterLayerPoint());
    },
  
    // adjust center for view to get inside bounds
    _limitCenter: function (center, zoom, bounds) {
  
      if (!bounds) { return center; }
  
      var centerPoint = this.project(center, zoom),
          viewHalf = this.getSize().divideBy(2),
          viewBounds = new L.Bounds(centerPoint.subtract(viewHalf), centerPoint.add(viewHalf)),
          offset = this._getBoundsOffset(viewBounds, bounds, zoom);
  
      return this.unproject(centerPoint.add(offset), zoom);
    },
  
    // adjust offset for view to get inside bounds
    _limitOffset: function (offset, bounds) {
      if (!bounds) { return offset; }
  
      var viewBounds = this.getPixelBounds(),
          newBounds = new L.Bounds(viewBounds.min.add(offset), viewBounds.max.add(offset));
  
      return offset.add(this._getBoundsOffset(newBounds, bounds));
    },
  
    // returns offset needed for pxBounds to get inside maxBounds at a specified zoom
    _getBoundsOffset: function (pxBounds, maxBounds, zoom) {
      var nwOffset = this.project(maxBounds.getNorthWest(), zoom).subtract(pxBounds.min),
          seOffset = this.project(maxBounds.getSouthEast(), zoom).subtract(pxBounds.max),
  
          dx = this._rebound(nwOffset.x, -seOffset.x),
          dy = this._rebound(nwOffset.y, -seOffset.y);
  
      return new L.Point(dx, dy);
    },
  
    _rebound: function (left, right) {
      return left + right > 0 ?
        Math.round(left - right) / 2 :
        Math.max(0, Math.ceil(left)) - Math.max(0, Math.floor(right));
    },
  
    _limitZoom: function (zoom) {
      var min = this.getMinZoom(),
          max = this.getMaxZoom();
  
      return Math.max(min, Math.min(max, zoom));
    }
  });
  
  L.map = function (id, options) {
    return new L.Map(id, options);
  };
  
  
  /*
   * Mercator projection that takes into account that the Earth is not a perfect sphere.
   * Less popular than spherical mercator; used by projections like EPSG:3395.
   */
  
  L.Projection.Mercator = {
    MAX_LATITUDE: 85.0840591556,
  
    R_MINOR: 6356752.314245179,
    R_MAJOR: 6378137,
  
    project: function (latlng) { // (LatLng) -> Point
      var d = L.LatLng.DEG_TO_RAD,
          max = this.MAX_LATITUDE,
          lat = Math.max(Math.min(max, latlng.lat), -max),
          r = this.R_MAJOR,
          r2 = this.R_MINOR,
          x = latlng.lng * d * r,
          y = lat * d,
          tmp = r2 / r,
          eccent = Math.sqrt(1.0 - tmp * tmp),
          con = eccent * Math.sin(y);
  
      con = Math.pow((1 - con) / (1 + con), eccent * 0.5);
  
      var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con;
      y = -r * Math.log(ts);
  
      return new L.Point(x, y);
    },
  
    unproject: function (point) { // (Point, Boolean) -> LatLng
      var d = L.LatLng.RAD_TO_DEG,
          r = this.R_MAJOR,
          r2 = this.R_MINOR,
          lng = point.x * d / r,
          tmp = r2 / r,
          eccent = Math.sqrt(1 - (tmp * tmp)),
          ts = Math.exp(- point.y / r),
          phi = (Math.PI / 2) - 2 * Math.atan(ts),
          numIter = 15,
          tol = 1e-7,
          i = numIter,
          dphi = 0.1,
          con;
  
      while ((Math.abs(dphi) > tol) && (--i > 0)) {
        con = eccent * Math.sin(phi);
        dphi = (Math.PI / 2) - 2 * Math.atan(ts *
                    Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi;
        phi += dphi;
      }
  
      return new L.LatLng(phi * d, lng);
    }
  };
  
  
  
  L.CRS.EPSG3395 = L.extend({}, L.CRS, {
    code: 'EPSG:3395',
  
    projection: L.Projection.Mercator,
  
    transformation: (function () {
      var m = L.Projection.Mercator,
          r = m.R_MAJOR,
          scale = 0.5 / (Math.PI * r);
  
      return new L.Transformation(scale, 0.5, -scale, 0.5);
    }())
  });
  
  
  /*
   * L.TileLayer is used for standard xyz-numbered tile layers.
   */
  
  L.TileLayer = L.Class.extend({
    includes: L.Mixin.Events,
  
    options: {
      minZoom: 0,
      maxZoom: 18,
      tileSize: 256,
      subdomains: 'abc',
      errorTileUrl: '',
      attribution: '',
      zoomOffset: 0,
      opacity: 1,
      /*
      maxNativeZoom: null,
      zIndex: null,
      tms: false,
      continuousWorld: false,
      noWrap: false,
      zoomReverse: false,
      detectRetina: false,
      reuseTiles: false,
      bounds: false,
      */
      unloadInvisibleTiles: L.Browser.mobile,
      updateWhenIdle: L.Browser.mobile
    },
  
    initialize: function (url, options) {
      options = L.setOptions(this, options);
  
      // detecting retina displays, adjusting tileSize and zoom levels
      if (options.detectRetina && L.Browser.retina && options.maxZoom > 0) {
  
        options.tileSize = Math.floor(options.tileSize / 2);
        options.zoomOffset++;
  
        if (options.minZoom > 0) {
          options.minZoom--;
        }
        this.options.maxZoom--;
      }
  
      if (options.bounds) {
        options.bounds = L.latLngBounds(options.bounds);
      }
  
      this._url = url;
  
      var subdomains = this.options.subdomains;
  
      if (typeof subdomains === 'string') {
        this.options.subdomains = subdomains.split('');
      }
    },
  
    onAdd: function (map) {
      this._map = map;
      this._animated = map._zoomAnimated;
  
      // create a container div for tiles
      this._initContainer();
  
      // set up events
      map.on({
        'viewreset': this._reset,
        'moveend': this._update
      }, this);
  
      if (this._animated) {
        map.on({
          'zoomanim': this._animateZoom,
          'zoomend': this._endZoomAnim
        }, this);
      }
  
      if (!this.options.updateWhenIdle) {
        this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this);
        map.on('move', this._limitedUpdate, this);
      }
  
      this._reset();
      this._update();
    },
  
    addTo: function (map) {
      map.addLayer(this);
      return this;
    },
  
    onRemove: function (map) {
      this._container.parentNode.removeChild(this._container);
  
      map.off({
        'viewreset': this._reset,
        'moveend': this._update
      }, this);
  
      if (this._animated) {
        map.off({
          'zoomanim': this._animateZoom,
          'zoomend': this._endZoomAnim
        }, this);
      }
  
      if (!this.options.updateWhenIdle) {
        map.off('move', this._limitedUpdate, this);
      }
  
      this._container = null;
      this._map = null;
    },
  
    bringToFront: function () {
      var pane = this._map._panes.tilePane;
  
      if (this._container) {
        pane.appendChild(this._container);
        this._setAutoZIndex(pane, Math.max);
      }
  
      return this;
    },
  
    bringToBack: function () {
      var pane = this._map._panes.tilePane;
  
      if (this._container) {
        pane.insertBefore(this._container, pane.firstChild);
        this._setAutoZIndex(pane, Math.min);
      }
  
      return this;
    },
  
    getAttribution: function () {
      return this.options.attribution;
    },
  
    getContainer: function () {
      return this._container;
    },
  
    setOpacity: function (opacity) {
      this.options.opacity = opacity;
  
      if (this._map) {
        this._updateOpacity();
      }
  
      return this;
    },
  
    setZIndex: function (zIndex) {
      this.options.zIndex = zIndex;
      this._updateZIndex();
  
      return this;
    },
  
    setUrl: function (url, noRedraw) {
      this._url = url;
  
      if (!noRedraw) {
        this.redraw();
      }
  
      return this;
    },
  
    redraw: function () {
      if (this._map) {
        this._reset({hard: true});
        this._update();
      }
      return this;
    },
  
    _updateZIndex: function () {
      if (this._container && this.options.zIndex !== undefined) {
        this._container.style.zIndex = this.options.zIndex;
      }
    },
  
    _setAutoZIndex: function (pane, compare) {
  
      var layers = pane.children,
          edgeZIndex = -compare(Infinity, -Infinity), // -Infinity for max, Infinity for min
          zIndex, i, len;
  
      for (i = 0, len = layers.length; i < len; i++) {
  
        if (layers[i] !== this._container) {
          zIndex = parseInt(layers[i].style.zIndex, 10);
  
          if (!isNaN(zIndex)) {
            edgeZIndex = compare(edgeZIndex, zIndex);
          }
        }
      }
  
      this.options.zIndex = this._container.style.zIndex =
              (isFinite(edgeZIndex) ? edgeZIndex : 0) + compare(1, -1);
    },
  
    _updateOpacity: function () {
      var i,
          tiles = this._tiles;
  
      if (L.Browser.ielt9) {
        for (i in tiles) {
          L.DomUtil.setOpacity(tiles[i], this.options.opacity);
        }
      } else {
        L.DomUtil.setOpacity(this._container, this.options.opacity);
      }
    },
  
    _initContainer: function () {
      var tilePane = this._map._panes.tilePane;
  
      if (!this._container) {
        this._container = L.DomUtil.create('div', 'leaflet-layer');
  
        this._updateZIndex();
  
        if (this._animated) {
          var className = 'leaflet-tile-container';
  
          this._bgBuffer = L.DomUtil.create('div', className, this._container);
          this._tileContainer = L.DomUtil.create('div', className, this._container);
  
        } else {
          this._tileContainer = this._container;
        }
  
        tilePane.appendChild(this._container);
  
        if (this.options.opacity < 1) {
          this._updateOpacity();
        }
      }
    },
  
    _reset: function (e) {
      for (var key in this._tiles) {
        this.fire('tileunload', {tile: this._tiles[key]});
      }
  
      this._tiles = {};
      this._tilesToLoad = 0;
  
      if (this.options.reuseTiles) {
        this._unusedTiles = [];
      }
  
      this._tileContainer.innerHTML = '';
  
      if (this._animated && e && e.hard) {
        this._clearBgBuffer();
      }
  
      this._initContainer();
    },
  
    _getTileSize: function () {
      var map = this._map,
          zoom = map.getZoom() + this.options.zoomOffset,
          zoomN = this.options.maxNativeZoom,
          tileSize = this.options.tileSize;
  
      if (zoomN && zoom > zoomN) {
        tileSize = Math.round(map.getZoomScale(zoom) / map.getZoomScale(zoomN) * tileSize);
      }
  
      return tileSize;
    },
  
    _update: function () {
  
      if (!this._map) { return; }
  
      var map = this._map,
          bounds = map.getPixelBounds(),
          zoom = map.getZoom(),
          tileSize = this._getTileSize();
  
      if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
        return;
      }
  
      var tileBounds = L.bounds(
              bounds.min.divideBy(tileSize)._floor(),
              bounds.max.divideBy(tileSize)._floor());
  
      this._addTilesFromCenterOut(tileBounds);
  
      if (this.options.unloadInvisibleTiles || this.options.reuseTiles) {
        this._removeOtherTiles(tileBounds);
      }
    },
  
    _addTilesFromCenterOut: function (bounds) {
      var queue = [],
          center = bounds.getCenter();
  
      var j, i, point;
  
      for (j = bounds.min.y; j <= bounds.max.y; j++) {
        for (i = bounds.min.x; i <= bounds.max.x; i++) {
          point = new L.Point(i, j);
  
          if (this._tileShouldBeLoaded(point)) {
            queue.push(point);
          }
        }
      }
  
      var tilesToLoad = queue.length;
  
      if (tilesToLoad === 0) { return; }
  
      // load tiles in order of their distance to center
      queue.sort(function (a, b) {
        return a.distanceTo(center) - b.distanceTo(center);
      });
  
      var fragment = document.createDocumentFragment();
  
      // if its the first batch of tiles to load
      if (!this._tilesToLoad) {
        this.fire('loading');
      }
  
      this._tilesToLoad += tilesToLoad;
  
      for (i = 0; i < tilesToLoad; i++) {
        this._addTile(queue[i], fragment);
      }
  
      this._tileContainer.appendChild(fragment);
    },
  
    _tileShouldBeLoaded: function (tilePoint) {
      if ((tilePoint.x + ':' + tilePoint.y) in this._tiles) {
        return false; // already loaded
      }
  
      var options = this.options;
  
      if (!options.continuousWorld) {
        var limit = this._getWrapTileNum();
  
        // don't load if exceeds world bounds
        if ((options.noWrap && (tilePoint.x < 0 || tilePoint.x >= limit.x)) ||
          tilePoint.y < 0 || tilePoint.y >= limit.y) { return false; }
      }
  
      if (options.bounds) {
        var tileSize = options.tileSize,
            nwPoint = tilePoint.multiplyBy(tileSize),
            sePoint = nwPoint.add([tileSize, tileSize]),
            nw = this._map.unproject(nwPoint),
            se = this._map.unproject(sePoint);
  
        // TODO temporary hack, will be removed after refactoring projections
        // https://github.com/Leaflet/Leaflet/issues/1618
        if (!options.continuousWorld && !options.noWrap) {
          nw = nw.wrap();
          se = se.wrap();
        }
  
        if (!options.bounds.intersects([nw, se])) { return false; }
      }
  
      return true;
    },
  
    _removeOtherTiles: function (bounds) {
      var kArr, x, y, key;
  
      for (key in this._tiles) {
        kArr = key.split(':');
        x = parseInt(kArr[0], 10);
        y = parseInt(kArr[1], 10);
  
        // remove tile if it's out of bounds
        if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
          this._removeTile(key);
        }
      }
    },
  
    _removeTile: function (key) {
      var tile = this._tiles[key];
  
      this.fire('tileunload', {tile: tile, url: tile.src});
  
      if (this.options.reuseTiles) {
        L.DomUtil.removeClass(tile, 'leaflet-tile-loaded');
        this._unusedTiles.push(tile);
  
      } else if (tile.parentNode === this._tileContainer) {
        this._tileContainer.removeChild(tile);
      }
  
      // for https://github.com/CloudMade/Leaflet/issues/137
      if (!L.Browser.android) {
        tile.onload = null;
        tile.src = L.Util.emptyImageUrl;
      }
  
      delete this._tiles[key];
    },
  
    _addTile: function (tilePoint, container) {
      var tilePos = this._getTilePos(tilePoint);
  
      // get unused tile - or create a new tile
      var tile = this._getTile();
  
      /*
      Chrome 20 layouts much faster with top/left (verify with timeline, frames)
      Android 4 browser has display issues with top/left and requires transform instead
      (other browsers don't currently care) - see debug/hacks/jitter.html for an example
      */
      L.DomUtil.setPosition(tile, tilePos, L.Browser.chrome);
  
      this._tiles[tilePoint.x + ':' + tilePoint.y] = tile;
  
      this._loadTile(tile, tilePoint);
  
      if (tile.parentNode !== this._tileContainer) {
        container.appendChild(tile);
      }
    },
  
    _getZoomForUrl: function () {
  
      var options = this.options,
          zoom = this._map.getZoom();
  
      if (options.zoomReverse) {
        zoom = options.maxZoom - zoom;
      }
  
      zoom += options.zoomOffset;
  
      return options.maxNativeZoom ? Math.min(zoom, options.maxNativeZoom) : zoom;
    },
  
    _getTilePos: function (tilePoint) {
      var origin = this._map.getPixelOrigin(),
          tileSize = this._getTileSize();
  
      return tilePoint.multiplyBy(tileSize).subtract(origin);
    },
  
    // image-specific code (override to implement e.g. Canvas or SVG tile layer)
  
    getTileUrl: function (tilePoint) {
      return L.Util.template(this._url, L.extend({
        s: this._getSubdomain(tilePoint),
        z: tilePoint.z,
        x: tilePoint.x,
        y: tilePoint.y
      }, this.options));
    },
  
    _getWrapTileNum: function () {
      var crs = this._map.options.crs,
          size = crs.getSize(this._map.getZoom());
      return size.divideBy(this._getTileSize())._floor();
    },
  
    _adjustTilePoint: function (tilePoint) {
  
      var limit = this._getWrapTileNum();
  
      // wrap tile coordinates
      if (!this.options.continuousWorld && !this.options.noWrap) {
        tilePoint.x = ((tilePoint.x % limit.x) + limit.x) % limit.x;
      }
  
      if (this.options.tms) {
        tilePoint.y = limit.y - tilePoint.y - 1;
      }
  
      tilePoint.z = this._getZoomForUrl();
    },
  
    _getSubdomain: function (tilePoint) {
      var index = Math.abs(tilePoint.x + tilePoint.y) % this.options.subdomains.length;
      return this.options.subdomains[index];
    },
  
    _getTile: function () {
      if (this.options.reuseTiles && this._unusedTiles.length > 0) {
        var tile = this._unusedTiles.pop();
        this._resetTile(tile);
        return tile;
      }
      return this._createTile();
    },
  
    // Override if data stored on a tile needs to be cleaned up before reuse
    _resetTile: function (/*tile*/) {},
  
    _createTile: function () {
      var tile = L.DomUtil.create('img', 'leaflet-tile');
      tile.style.width = tile.style.height = this._getTileSize() + 'px';
      tile.galleryimg = 'no';
  
      tile.onselectstart = tile.onmousemove = L.Util.falseFn;
  
      if (L.Browser.ielt9 && this.options.opacity !== undefined) {
        L.DomUtil.setOpacity(tile, this.options.opacity);
      }
      // without this hack, tiles disappear after zoom on Chrome for Android
      // https://github.com/Leaflet/Leaflet/issues/2078
      if (L.Browser.mobileWebkit3d) {
        tile.style.WebkitBackfaceVisibility = 'hidden';
      }
      return tile;
    },
  
    _loadTile: function (tile, tilePoint) {
      tile._layer  = this;
      tile.onload  = this._tileOnLoad;
      tile.onerror = this._tileOnError;
  
      this._adjustTilePoint(tilePoint);
      tile.src     = this.getTileUrl(tilePoint);
  
      this.fire('tileloadstart', {
        tile: tile,
        url: tile.src
      });
    },
  
    _tileLoaded: function () {
      this._tilesToLoad--;
  
      if (this._animated) {
        L.DomUtil.addClass(this._tileContainer, 'leaflet-zoom-animated');
      }
  
      if (!this._tilesToLoad) {
        this.fire('load');
  
        if (this._animated) {
          // clear scaled tiles after all new tiles are loaded (for performance)
          clearTimeout(this._clearBgBufferTimer);
          this._clearBgBufferTimer = setTimeout(L.bind(this._clearBgBuffer, this), 500);
        }
      }
    },
  
    _tileOnLoad: function () {
      var layer = this._layer;
  
      //Only if we are loading an actual image
      if (this.src !== L.Util.emptyImageUrl) {
        L.DomUtil.addClass(this, 'leaflet-tile-loaded');
  
        layer.fire('tileload', {
          tile: this,
          url: this.src
        });
      }
  
      layer._tileLoaded();
    },
  
    _tileOnError: function () {
      var layer = this._layer;
  
      layer.fire('tileerror', {
        tile: this,
        url: this.src
      });
  
      var newUrl = layer.options.errorTileUrl;
      if (newUrl) {
        this.src = newUrl;
      }
  
      layer._tileLoaded();
    }
  });
  
  L.tileLayer = function (url, options) {
    return new L.TileLayer(url, options);
  };
  
  
  /*
   * L.TileLayer.WMS is used for putting WMS tile layers on the map.
   */
  
  L.TileLayer.WMS = L.TileLayer.extend({
  
    defaultWmsParams: {
      service: 'WMS',
      request: 'GetMap',
      version: '1.1.1',
      layers: '',
      styles: '',
      format: 'image/jpeg',
      transparent: false
    },
  
    initialize: function (url, options) { // (String, Object)
  
      this._url = url;
  
      var wmsParams = L.extend({}, this.defaultWmsParams),
          tileSize = options.tileSize || this.options.tileSize;
  
      if (options.detectRetina && L.Browser.retina) {
        wmsParams.width = wmsParams.height = tileSize * 2;
      } else {
        wmsParams.width = wmsParams.height = tileSize;
      }
  
      for (var i in options) {
        // all keys that are not TileLayer options go to WMS params
        if (!this.options.hasOwnProperty(i) && i !== 'crs') {
          wmsParams[i] = options[i];
        }
      }
  
      this.wmsParams = wmsParams;
  
      L.setOptions(this, options);
    },
  
    onAdd: function (map) {
  
      this._crs = this.options.crs || map.options.crs;
  
      this._wmsVersion = parseFloat(this.wmsParams.version);
  
      var projectionKey = this._wmsVersion >= 1.3 ? 'crs' : 'srs';
      this.wmsParams[projectionKey] = this._crs.code;
  
      L.TileLayer.prototype.onAdd.call(this, map);
    },
  
    getTileUrl: function (tilePoint) { // (Point, Number) -> String
  
      var map = this._map,
          tileSize = this.options.tileSize,
  
          nwPoint = tilePoint.multiplyBy(tileSize),
          sePoint = nwPoint.add([tileSize, tileSize]),
  
          nw = this._crs.project(map.unproject(nwPoint, tilePoint.z)),
          se = this._crs.project(map.unproject(sePoint, tilePoint.z)),
          bbox = this._wmsVersion >= 1.3 && this._crs === L.CRS.EPSG4326 ?
              [se.y, nw.x, nw.y, se.x].join(',') :
              [nw.x, se.y, se.x, nw.y].join(','),
  
          url = L.Util.template(this._url, {s: this._getSubdomain(tilePoint)});
  
      return url + L.Util.getParamString(this.wmsParams, url, true) + '&BBOX=' + bbox;
    },
  
    setParams: function (params, noRedraw) {
  
      L.extend(this.wmsParams, params);
  
      if (!noRedraw) {
        this.redraw();
      }
  
      return this;
    }
  });
  
  L.tileLayer.wms = function (url, options) {
    return new L.TileLayer.WMS(url, options);
  };
  
  
  /*
   * L.TileLayer.Canvas is a class that you can use as a base for creating
   * dynamically drawn Canvas-based tile layers.
   */
  
  L.TileLayer.Canvas = L.TileLayer.extend({
    options: {
      async: false
    },
  
    initialize: function (options) {
      L.setOptions(this, options);
    },
  
    redraw: function () {
      if (this._map) {
        this._reset({hard: true});
        this._update();
      }
  
      for (var i in this._tiles) {
        this._redrawTile(this._tiles[i]);
      }
      return this;
    },
  
    _redrawTile: function (tile) {
      this.drawTile(tile, tile._tilePoint, this._map._zoom);
    },
  
    _createTile: function () {
      var tile = L.DomUtil.create('canvas', 'leaflet-tile');
      tile.width = tile.height = this.options.tileSize;
      tile.onselectstart = tile.onmousemove = L.Util.falseFn;
      return tile;
    },
  
    _loadTile: function (tile, tilePoint) {
      tile._layer = this;
      tile._tilePoint = tilePoint;
  
      this._redrawTile(tile);
  
      if (!this.options.async) {
        this.tileDrawn(tile);
      }
    },
  
    drawTile: function (/*tile, tilePoint*/) {
      // override with rendering code
    },
  
    tileDrawn: function (tile) {
      this._tileOnLoad.call(tile);
    }
  });
  
  
  L.tileLayer.canvas = function (options) {
    return new L.TileLayer.Canvas(options);
  };
  
  
  /*
   * L.ImageOverlay is used to overlay images over the map (to specific geographical bounds).
   */
  
  L.ImageOverlay = L.Class.extend({
    includes: L.Mixin.Events,
  
    options: {
      opacity: 1
    },
  
    initialize: function (url, bounds, options) { // (String, LatLngBounds, Object)
      this._url = url;
      this._bounds = L.latLngBounds(bounds);
  
      L.setOptions(this, options);
    },
  
    onAdd: function (map) {
      this._map = map;
  
      if (!this._image) {
        this._initImage();
      }
  
      map._panes.overlayPane.appendChild(this._image);
  
      map.on('viewreset', this._reset, this);
  
      if (map.options.zoomAnimation && L.Browser.any3d) {
        map.on('zoomanim', this._animateZoom, this);
      }
  
      this._reset();
    },
  
    onRemove: function (map) {
      map.getPanes().overlayPane.removeChild(this._image);
  
      map.off('viewreset', this._reset, this);
  
      if (map.options.zoomAnimation) {
        map.off('zoomanim', this._animateZoom, this);
      }
    },
  
    addTo: function (map) {
      map.addLayer(this);
      return this;
    },
  
    setOpacity: function (opacity) {
      this.options.opacity = opacity;
      this._updateOpacity();
      return this;
    },
  
    // TODO remove bringToFront/bringToBack duplication from TileLayer/Path
    bringToFront: function () {
      if (this._image) {
        this._map._panes.overlayPane.appendChild(this._image);
      }
      return this;
    },
  
    bringToBack: function () {
      var pane = this._map._panes.overlayPane;
      if (this._image) {
        pane.insertBefore(this._image, pane.firstChild);
      }
      return this;
    },
  
    setUrl: function (url) {
      this._url = url;
      this._image.src = this._url;
    },
  
    getAttribution: function () {
      return this.options.attribution;
    },
  
    _initImage: function () {
      this._image = L.DomUtil.create('img', 'leaflet-image-layer');
  
      if (this._map.options.zoomAnimation && L.Browser.any3d) {
        L.DomUtil.addClass(this._image, 'leaflet-zoom-animated');
      } else {
        L.DomUtil.addClass(this._image, 'leaflet-zoom-hide');
      }
  
      this._updateOpacity();
  
      //TODO createImage util method to remove duplication
      L.extend(this._image, {
        galleryimg: 'no',
        onselectstart: L.Util.falseFn,
        onmousemove: L.Util.falseFn,
        onload: L.bind(this._onImageLoad, this),
        src: this._url
      });
    },
  
    _animateZoom: function (e) {
      var map = this._map,
          image = this._image,
          scale = map.getZoomScale(e.zoom),
          nw = this._bounds.getNorthWest(),
          se = this._bounds.getSouthEast(),
  
          topLeft = map._latLngToNewLayerPoint(nw, e.zoom, e.center),
          size = map._latLngToNewLayerPoint(se, e.zoom, e.center)._subtract(topLeft),
          origin = topLeft._add(size._multiplyBy((1 / 2) * (1 - 1 / scale)));
  
      image.style[L.DomUtil.TRANSFORM] =
              L.DomUtil.getTranslateString(origin) + ' scale(' + scale + ') ';
    },
  
    _reset: function () {
      var image   = this._image,
          topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()),
          size = this._map.latLngToLayerPoint(this._bounds.getSouthEast())._subtract(topLeft);
  
      L.DomUtil.setPosition(image, topLeft);
  
      image.style.width  = size.x + 'px';
      image.style.height = size.y + 'px';
    },
  
    _onImageLoad: function () {
      this.fire('load');
    },
  
    _updateOpacity: function () {
      L.DomUtil.setOpacity(this._image, this.options.opacity);
    }
  });
  
  L.imageOverlay = function (url, bounds, options) {
    return new L.ImageOverlay(url, bounds, options);
  };
  
  
  /*
   * L.Icon is an image-based icon class that you can use with L.Marker for custom markers.
   */
  
  L.Icon = L.Class.extend({
    options: {
      /*
      iconUrl: (String) (required)
      iconRetinaUrl: (String) (optional, used for retina devices if detected)
      iconSize: (Point) (can be set through CSS)
      iconAnchor: (Point) (centered by default, can be set in CSS with negative margins)
      popupAnchor: (Point) (if not specified, popup opens in the anchor point)
      shadowUrl: (String) (no shadow by default)
      shadowRetinaUrl: (String) (optional, used for retina devices if detected)
      shadowSize: (Point)
      shadowAnchor: (Point)
      */
      className: ''
    },
  
    initialize: function (options) {
      L.setOptions(this, options);
    },
  
    createIcon: function (oldIcon) {
      return this._createIcon('icon', oldIcon);
    },
  
    createShadow: function (oldIcon) {
      return this._createIcon('shadow', oldIcon);
    },
  
    _createIcon: function (name, oldIcon) {
      var src = this._getIconUrl(name);
  
      if (!src) {
        if (name === 'icon') {
          throw new Error('iconUrl not set in Icon options (see the docs).');
        }
        return null;
      }
  
      var img;
      if (!oldIcon || oldIcon.tagName !== 'IMG') {
        img = this._createImg(src);
      } else {
        img = this._createImg(src, oldIcon);
      }
      this._setIconStyles(img, name);
  
      return img;
    },
  
    _setIconStyles: function (img, name) {
      var options = this.options,
          size = L.point(options[name + 'Size']),
          anchor;
  
      if (name === 'shadow') {
        anchor = L.point(options.shadowAnchor || options.iconAnchor);
      } else {
        anchor = L.point(options.iconAnchor);
      }
  
      if (!anchor && size) {
        anchor = size.divideBy(2, true);
      }
  
      img.className = 'leaflet-marker-' + name + ' ' + options.className;
  
      if (anchor) {
        img.style.marginLeft = (-anchor.x) + 'px';
        img.style.marginTop  = (-anchor.y) + 'px';
      }
  
      if (size) {
        img.style.width  = size.x + 'px';
        img.style.height = size.y + 'px';
      }
    },
  
    _createImg: function (src, el) {
      el = el || document.createElement('img');
      el.src = src;
      return el;
    },
  
    _getIconUrl: function (name) {
      if (L.Browser.retina && this.options[name + 'RetinaUrl']) {
        return this.options[name + 'RetinaUrl'];
      }
      return this.options[name + 'Url'];
    }
  });
  
  L.icon = function (options) {
    return new L.Icon(options);
  };
  
  
  /*
   * L.Icon.Default is the blue marker icon used by default in Leaflet.
   */
  
  L.Icon.Default = L.Icon.extend({
  
    options: {
      iconSize: [25, 41],
      iconAnchor: [12, 41],
      popupAnchor: [1, -34],
  
      shadowSize: [41, 41]
    },
  
    _getIconUrl: function (name) {
      var key = name + 'Url';
  
      if (this.options[key]) {
        return this.options[key];
      }
  
      if (L.Browser.retina && name === 'icon') {
        name += '-2x';
      }
  
      var path = L.Icon.Default.imagePath;
  
      if (!path) {
        throw new Error('Couldn\'t autodetect L.Icon.Default.imagePath, set it manually.');
      }
  
      return path + '/marker-' + name + '.png';
    }
  });
  
  L.Icon.Default.imagePath = (function () {
    var scripts = document.getElementsByTagName('script'),
        leafletRe = /[\/^]leaflet[\-\._]?([\w\-\._]*)\.js\??/;
  
    var i, len, src, matches, path;
  
    for (i = 0, len = scripts.length; i < len; i++) {
      src = scripts[i].src;
      matches = src.match(leafletRe);
  
      if (matches) {
        path = src.split(leafletRe)[0];
        return (path ? path + '/' : '') + 'images';
      }
    }
  }());
  
  
  /*
   * L.Marker is used to display clickable/draggable icons on the map.
   */
  
  L.Marker = L.Class.extend({
  
    includes: L.Mixin.Events,
  
    options: {
      icon: new L.Icon.Default(),
      title: '',
      alt: '',
      clickable: true,
      draggable: false,
      keyboard: true,
      zIndexOffset: 0,
      opacity: 1,
      riseOnHover: false,
      riseOffset: 250
    },
  
    initialize: function (latlng, options) {
      L.setOptions(this, options);
      this._latlng = L.latLng(latlng);
    },
  
    onAdd: function (map) {
      this._map = map;
  
      map.on('viewreset', this.update, this);
  
      this._initIcon();
      this.update();
      this.fire('add');
  
      if (map.options.zoomAnimation && map.options.markerZoomAnimation) {
        map.on('zoomanim', this._animateZoom, this);
      }
    },
  
    addTo: function (map) {
      map.addLayer(this);
      return this;
    },
  
    onRemove: function (map) {
      if (this.dragging) {
        this.dragging.disable();
      }
  
      this._removeIcon();
      this._removeShadow();
  
      this.fire('remove');
  
      map.off({
        'viewreset': this.update,
        'zoomanim': this._animateZoom
      }, this);
  
      this._map = null;
    },
  
    getLatLng: function () {
      return this._latlng;
    },
  
    setLatLng: function (latlng) {
      this._latlng = L.latLng(latlng);
  
      this.update();
  
      return this.fire('move', { latlng: this._latlng });
    },
  
    setZIndexOffset: function (offset) {
      this.options.zIndexOffset = offset;
      this.update();
  
      return this;
    },
  
    setIcon: function (icon) {
  
      this.options.icon = icon;
  
      if (this._map) {
        this._initIcon();
        this.update();
      }
  
      if (this._popup) {
        this.bindPopup(this._popup);
      }
  
      return this;
    },
  
    update: function () {
      if (this._icon) {
        var pos = this._map.latLngToLayerPoint(this._latlng).round();
        this._setPos(pos);
      }
  
      return this;
    },
  
    _initIcon: function () {
      var options = this.options,
          map = this._map,
          animation = (map.options.zoomAnimation && map.options.markerZoomAnimation),
          classToAdd = animation ? 'leaflet-zoom-animated' : 'leaflet-zoom-hide';
  
      var icon = options.icon.createIcon(this._icon),
        addIcon = false;
  
      // if we're not reusing the icon, remove the old one and init new one
      if (icon !== this._icon) {
        if (this._icon) {
          this._removeIcon();
        }
        addIcon = true;
  
        if (options.title) {
          icon.title = options.title;
        }
        
        if (options.alt) {
          icon.alt = options.alt;
        }
      }
  
      L.DomUtil.addClass(icon, classToAdd);
  
      if (options.keyboard) {
        icon.tabIndex = '0';
      }
  
      this._icon = icon;
  
      this._initInteraction();
  
      if (options.riseOnHover) {
        L.DomEvent
          .on(icon, 'mouseover', this._bringToFront, this)
          .on(icon, 'mouseout', this._resetZIndex, this);
      }
  
      var newShadow = options.icon.createShadow(this._shadow),
        addShadow = false;
  
      if (newShadow !== this._shadow) {
        this._removeShadow();
        addShadow = true;
      }
  
      if (newShadow) {
        L.DomUtil.addClass(newShadow, classToAdd);
      }
      this._shadow = newShadow;
  
  
      if (options.opacity < 1) {
        this._updateOpacity();
      }
  
  
      var panes = this._map._panes;
  
      if (addIcon) {
        panes.markerPane.appendChild(this._icon);
      }
  
      if (newShadow && addShadow) {
        panes.shadowPane.appendChild(this._shadow);
      }
    },
  
    _removeIcon: function () {
      if (this.options.riseOnHover) {
        L.DomEvent
            .off(this._icon, 'mouseover', this._bringToFront)
            .off(this._icon, 'mouseout', this._resetZIndex);
      }
  
      this._map._panes.markerPane.removeChild(this._icon);
  
      this._icon = null;
    },
  
    _removeShadow: function () {
      if (this._shadow) {
        this._map._panes.shadowPane.removeChild(this._shadow);
      }
      this._shadow = null;
    },
  
    _setPos: function (pos) {
      L.DomUtil.setPosition(this._icon, pos);
  
      if (this._shadow) {
        L.DomUtil.setPosition(this._shadow, pos);
      }
  
      this._zIndex = pos.y + this.options.zIndexOffset;
  
      this._resetZIndex();
    },
  
    _updateZIndex: function (offset) {
      this._icon.style.zIndex = this._zIndex + offset;
    },
  
    _animateZoom: function (opt) {
      var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center).round();
  
      this._setPos(pos);
    },
  
    _initInteraction: function () {
  
      if (!this.options.clickable) { return; }
  
      // TODO refactor into something shared with Map/Path/etc. to DRY it up
  
      var icon = this._icon,
          events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'contextmenu'];
  
      L.DomUtil.addClass(icon, 'leaflet-clickable');
      L.DomEvent.on(icon, 'click', this._onMouseClick, this);
      L.DomEvent.on(icon, 'keypress', this._onKeyPress, this);
  
      for (var i = 0; i < events.length; i++) {
        L.DomEvent.on(icon, events[i], this._fireMouseEvent, this);
      }
  
      if (L.Handler.MarkerDrag) {
        this.dragging = new L.Handler.MarkerDrag(this);
  
        if (this.options.draggable) {
          this.dragging.enable();
        }
      }
    },
  
    _onMouseClick: function (e) {
      var wasDragged = this.dragging && this.dragging.moved();
  
      if (this.hasEventListeners(e.type) || wasDragged) {
        L.DomEvent.stopPropagation(e);
      }
  
      if (wasDragged) { return; }
  
      if ((!this.dragging || !this.dragging._enabled) && this._map.dragging && this._map.dragging.moved()) { return; }
  
      this.fire(e.type, {
        originalEvent: e,
        latlng: this._latlng
      });
    },
  
    _onKeyPress: function (e) {
      if (e.keyCode === 13) {
        this.fire('click', {
          originalEvent: e,
          latlng: this._latlng
        });
      }
    },
  
    _fireMouseEvent: function (e) {
  
      this.fire(e.type, {
        originalEvent: e,
        latlng: this._latlng
      });
  
      // TODO proper custom event propagation
      // this line will always be called if marker is in a FeatureGroup
      if (e.type === 'contextmenu' && this.hasEventListeners(e.type)) {
        L.DomEvent.preventDefault(e);
      }
      if (e.type !== 'mousedown') {
        L.DomEvent.stopPropagation(e);
      } else {
        L.DomEvent.preventDefault(e);
      }
    },
  
    setOpacity: function (opacity) {
      this.options.opacity = opacity;
      if (this._map) {
        this._updateOpacity();
      }
  
      return this;
    },
  
    _updateOpacity: function () {
      L.DomUtil.setOpacity(this._icon, this.options.opacity);
      if (this._shadow) {
        L.DomUtil.setOpacity(this._shadow, this.options.opacity);
      }
    },
  
    _bringToFront: function () {
      this._updateZIndex(this.options.riseOffset);
    },
  
    _resetZIndex: function () {
      this._updateZIndex(0);
    }
  });
  
  L.marker = function (latlng, options) {
    return new L.Marker(latlng, options);
  };
  
  
  /*
   * L.DivIcon is a lightweight HTML-based icon class (as opposed to the image-based L.Icon)
   * to use with L.Marker.
   */
  
  L.DivIcon = L.Icon.extend({
    options: {
      iconSize: [12, 12], // also can be set through CSS
      /*
      iconAnchor: (Point)
      popupAnchor: (Point)
      html: (String)
      bgPos: (Point)
      */
      className: 'leaflet-div-icon',
      html: false
    },
  
    createIcon: function (oldIcon) {
      var div = (oldIcon && oldIcon.tagName === 'DIV') ? oldIcon : document.createElement('div'),
          options = this.options;
  
      if (options.html !== false) {
        div.innerHTML = options.html;
      } else {
        div.innerHTML = '';
      }
  
      if (options.bgPos) {
        div.style.backgroundPosition =
                (-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px';
      }
  
      this._setIconStyles(div, 'icon');
      return div;
    },
  
    createShadow: function () {
      return null;
    }
  });
  
  L.divIcon = function (options) {
    return new L.DivIcon(options);
  };
  
  
  /*
   * L.Popup is used for displaying popups on the map.
   */
  
  L.Map.mergeOptions({
    closePopupOnClick: true
  });
  
  L.Popup = L.Class.extend({
    includes: L.Mixin.Events,
  
    options: {
      minWidth: 50,
      maxWidth: 300,
      // maxHeight: null,
      autoPan: true,
      closeButton: true,
      offset: [0, 7],
      autoPanPadding: [5, 5],
      // autoPanPaddingTopLeft: null,
      // autoPanPaddingBottomRight: null,
      keepInView: false,
      className: '',
      zoomAnimation: true
    },
  
    initialize: function (options, source) {
      L.setOptions(this, options);
  
      this._source = source;
      this._animated = L.Browser.any3d && this.options.zoomAnimation;
      this._isOpen = false;
    },
  
    onAdd: function (map) {
      this._map = map;
  
      if (!this._container) {
        this._initLayout();
      }
  
      var animFade = map.options.fadeAnimation;
  
      if (animFade) {
        L.DomUtil.setOpacity(this._container, 0);
      }
      map._panes.popupPane.appendChild(this._container);
  
      map.on(this._getEvents(), this);
  
      this.update();
  
      if (animFade) {
        L.DomUtil.setOpacity(this._container, 1);
      }
  
      this.fire('open');
  
      map.fire('popupopen', {popup: this});
  
      if (this._source) {
        this._source.fire('popupopen', {popup: this});
      }
    },
  
    addTo: function (map) {
      map.addLayer(this);
      return this;
    },
  
    openOn: function (map) {
      map.openPopup(this);
      return this;
    },
  
    onRemove: function (map) {
      map._panes.popupPane.removeChild(this._container);
  
      L.Util.falseFn(this._container.offsetWidth); // force reflow
  
      map.off(this._getEvents(), this);
  
      if (map.options.fadeAnimation) {
        L.DomUtil.setOpacity(this._container, 0);
      }
  
      this._map = null;
  
      this.fire('close');
  
      map.fire('popupclose', {popup: this});
  
      if (this._source) {
        this._source.fire('popupclose', {popup: this});
      }
    },
  
    getLatLng: function () {
      return this._latlng;
    },
  
    setLatLng: function (latlng) {
      this._latlng = L.latLng(latlng);
      if (this._map) {
        this._updatePosition();
        this._adjustPan();
      }
      return this;
    },
  
    getContent: function () {
      return this._content;
    },
  
    setContent: function (content) {
      this._content = content;
      this.update();
      return this;
    },
  
    update: function () {
      if (!this._map) { return; }
  
      this._container.style.visibility = 'hidden';
  
      this._updateContent();
      this._updateLayout();
      this._updatePosition();
  
      this._container.style.visibility = '';
  
      this._adjustPan();
    },
  
    _getEvents: function () {
      var events = {
        viewreset: this._updatePosition
      };
  
      if (this._animated) {
        events.zoomanim = this._zoomAnimation;
      }
      if ('closeOnClick' in this.options ? this.options.closeOnClick : this._map.options.closePopupOnClick) {
        events.preclick = this._close;
      }
      if (this.options.keepInView) {
        events.moveend = this._adjustPan;
      }
  
      return events;
    },
  
    _close: function () {
      if (this._map) {
        this._map.closePopup(this);
      }
    },
  
    _initLayout: function () {
      var prefix = 'leaflet-popup',
        containerClass = prefix + ' ' + this.options.className + ' leaflet-zoom-' +
                (this._animated ? 'animated' : 'hide'),
        container = this._container = L.DomUtil.create('div', containerClass),
        closeButton;
  
      if (this.options.closeButton) {
        closeButton = this._closeButton =
                L.DomUtil.create('a', prefix + '-close-button', container);
        closeButton.href = '#close';
        closeButton.innerHTML = '&#215;';
        L.DomEvent.disableClickPropagation(closeButton);
  
        L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
      }
  
      var wrapper = this._wrapper =
              L.DomUtil.create('div', prefix + '-content-wrapper', container);
      L.DomEvent.disableClickPropagation(wrapper);
  
      this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
  
      L.DomEvent.disableScrollPropagation(this._contentNode);
      L.DomEvent.on(wrapper, 'contextmenu', L.DomEvent.stopPropagation);
  
      this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
      this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
    },
  
    _updateContent: function () {
      if (!this._content) { return; }
  
      if (typeof this._content === 'string') {
        this._contentNode.innerHTML = this._content;
      } else {
        while (this._contentNode.hasChildNodes()) {
          this._contentNode.removeChild(this._contentNode.firstChild);
        }
        this._contentNode.appendChild(this._content);
      }
      this.fire('contentupdate');
    },
  
    _updateLayout: function () {
      var container = this._contentNode,
          style = container.style;
  
      style.width = '';
      style.whiteSpace = 'nowrap';
  
      var width = container.offsetWidth;
      width = Math.min(width, this.options.maxWidth);
      width = Math.max(width, this.options.minWidth);
  
      style.width = (width + 1) + 'px';
      style.whiteSpace = '';
  
      style.height = '';
  
      var height = container.offsetHeight,
          maxHeight = this.options.maxHeight,
          scrolledClass = 'leaflet-popup-scrolled';
  
      if (maxHeight && height > maxHeight) {
        style.height = maxHeight + 'px';
        L.DomUtil.addClass(container, scrolledClass);
      } else {
        L.DomUtil.removeClass(container, scrolledClass);
      }
  
      this._containerWidth = this._container.offsetWidth;
    },
  
    _updatePosition: function () {
      if (!this._map) { return; }
  
      var pos = this._map.latLngToLayerPoint(this._latlng),
          animated = this._animated,
          offset = L.point(this.options.offset);
  
      if (animated) {
        L.DomUtil.setPosition(this._container, pos);
      }
  
      this._containerBottom = -offset.y - (animated ? 0 : pos.y);
      this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x + (animated ? 0 : pos.x);
  
      // bottom position the popup in case the height of the popup changes (images loading etc)
      this._container.style.bottom = this._containerBottom + 'px';
      this._container.style.left = this._containerLeft + 'px';
    },
  
    _zoomAnimation: function (opt) {
      var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
  
      L.DomUtil.setPosition(this._container, pos);
    },
  
    _adjustPan: function () {
      if (!this.options.autoPan) { return; }
  
      var map = this._map,
          containerHeight = this._container.offsetHeight,
          containerWidth = this._containerWidth,
  
          layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom);
  
      if (this._animated) {
        layerPos._add(L.DomUtil.getPosition(this._container));
      }
  
      var containerPos = map.layerPointToContainerPoint(layerPos),
          padding = L.point(this.options.autoPanPadding),
          paddingTL = L.point(this.options.autoPanPaddingTopLeft || padding),
          paddingBR = L.point(this.options.autoPanPaddingBottomRight || padding),
          size = map.getSize(),
          dx = 0,
          dy = 0;
  
      if (containerPos.x + containerWidth + paddingBR.x > size.x) { // right
        dx = containerPos.x + containerWidth - size.x + paddingBR.x;
      }
      if (containerPos.x - dx - paddingTL.x < 0) { // left
        dx = containerPos.x - paddingTL.x;
      }
      if (containerPos.y + containerHeight + paddingBR.y > size.y) { // bottom
        dy = containerPos.y + containerHeight - size.y + paddingBR.y;
      }
      if (containerPos.y - dy - paddingTL.y < 0) { // top
        dy = containerPos.y - paddingTL.y;
      }
  
      if (dx || dy) {
        map
            .fire('autopanstart')
            .panBy([dx, dy]);
      }
    },
  
    _onCloseButtonClick: function (e) {
      this._close();
      L.DomEvent.stop(e);
    }
  });
  
  L.popup = function (options, source) {
    return new L.Popup(options, source);
  };
  
  
  L.Map.include({
    openPopup: function (popup, latlng, options) { // (Popup) or (String || HTMLElement, LatLng[, Object])
      this.closePopup();
  
      if (!(popup instanceof L.Popup)) {
        var content = popup;
  
        popup = new L.Popup(options)
            .setLatLng(latlng)
            .setContent(content);
      }
      popup._isOpen = true;
  
      this._popup = popup;
      return this.addLayer(popup);
    },
  
    closePopup: function (popup) {
      if (!popup || popup === this._popup) {
        popup = this._popup;
        this._popup = null;
      }
      if (popup) {
        this.removeLayer(popup);
        popup._isOpen = false;
      }
      return this;
    }
  });
  
  
  /*
   * Popup extension to L.Marker, adding popup-related methods.
   */
  
  L.Marker.include({
    openPopup: function () {
      if (this._popup && this._map && !this._map.hasLayer(this._popup)) {
        this._popup.setLatLng(this._latlng);
        this._map.openPopup(this._popup);
      }
  
      return this;
    },
  
    closePopup: function () {
      if (this._popup) {
        this._popup._close();
      }
      return this;
    },
  
    togglePopup: function () {
      if (this._popup) {
        if (this._popup._isOpen) {
          this.closePopup();
        } else {
          this.openPopup();
        }
      }
      return this;
    },
  
    bindPopup: function (content, options) {
      var anchor = L.point(this.options.icon.options.popupAnchor || [0, 0]);
  
      anchor = anchor.add(L.Popup.prototype.options.offset);
  
      if (options && options.offset) {
        anchor = anchor.add(options.offset);
      }
  
      options = L.extend({offset: anchor}, options);
  
      if (!this._popupHandlersAdded) {
        this
            .on('click', this.togglePopup, this)
            .on('remove', this.closePopup, this)
            .on('move', this._movePopup, this);
        this._popupHandlersAdded = true;
      }
  
      if (content instanceof L.Popup) {
        L.setOptions(content, options);
        this._popup = content;
      } else {
        this._popup = new L.Popup(options, this)
          .setContent(content);
      }
  
      return this;
    },
  
    setPopupContent: function (content) {
      if (this._popup) {
        this._popup.setContent(content);
      }
      return this;
    },
  
    unbindPopup: function () {
      if (this._popup) {
        this._popup = null;
        this
            .off('click', this.togglePopup, this)
            .off('remove', this.closePopup, this)
            .off('move', this._movePopup, this);
        this._popupHandlersAdded = false;
      }
      return this;
    },
  
    getPopup: function () {
      return this._popup;
    },
  
    _movePopup: function (e) {
      this._popup.setLatLng(e.latlng);
    }
  });
  
  
  /*
   * L.LayerGroup is a class to combine several layers into one so that
   * you can manipulate the group (e.g. add/remove it) as one layer.
   */
  
  L.LayerGroup = L.Class.extend({
    initialize: function (layers) {
      this._layers = {};
  
      var i, len;
  
      if (layers) {
        for (i = 0, len = layers.length; i < len; i++) {
          this.addLayer(layers[i]);
        }
      }
    },
  
    addLayer: function (layer) {
      var id = this.getLayerId(layer);
  
      this._layers[id] = layer;
  
      if (this._map) {
        this._map.addLayer(layer);
      }
  
      return this;
    },
  
    removeLayer: function (layer) {
      var id = layer in this._layers ? layer : this.getLayerId(layer);
  
      if (this._map && this._layers[id]) {
        this._map.removeLayer(this._layers[id]);
      }
  
      delete this._layers[id];
  
      return this;
    },
  
    hasLayer: function (layer) {
      if (!layer) { return false; }
  
      return (layer in this._layers || this.getLayerId(layer) in this._layers);
    },
  
    clearLayers: function () {
      this.eachLayer(this.removeLayer, this);
      return this;
    },
  
    invoke: function (methodName) {
      var args = Array.prototype.slice.call(arguments, 1),
          i, layer;
  
      for (i in this._layers) {
        layer = this._layers[i];
  
        if (layer[methodName]) {
          layer[methodName].apply(layer, args);
        }
      }
  
      return this;
    },
  
    onAdd: function (map) {
      this._map = map;
      this.eachLayer(map.addLayer, map);
    },
  
    onRemove: function (map) {
      this.eachLayer(map.removeLayer, map);
      this._map = null;
    },
  
    addTo: function (map) {
      map.addLayer(this);
      return this;
    },
  
    eachLayer: function (method, context) {
      for (var i in this._layers) {
        method.call(context, this._layers[i]);
      }
      return this;
    },
  
    getLayer: function (id) {
      return this._layers[id];
    },
  
    getLayers: function () {
      var layers = [];
  
      for (var i in this._layers) {
        layers.push(this._layers[i]);
      }
      return layers;
    },
  
    setZIndex: function (zIndex) {
      return this.invoke('setZIndex', zIndex);
    },
  
    getLayerId: function (layer) {
      return L.stamp(layer);
    }
  });
  
  L.layerGroup = function (layers) {
    return new L.LayerGroup(layers);
  };
  
  
  /*
   * L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods
   * shared between a group of interactive layers (like vectors or markers).
   */
  
  L.FeatureGroup = L.LayerGroup.extend({
    includes: L.Mixin.Events,
  
    statics: {
      EVENTS: 'click dblclick mouseover mouseout mousemove contextmenu popupopen popupclose'
    },
  
    addLayer: function (layer) {
      if (this.hasLayer(layer)) {
        return this;
      }
  
      if ('on' in layer) {
        layer.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
      }
  
      L.LayerGroup.prototype.addLayer.call(this, layer);
  
      if (this._popupContent && layer.bindPopup) {
        layer.bindPopup(this._popupContent, this._popupOptions);
      }
  
      return this.fire('layeradd', {layer: layer});
    },
  
    removeLayer: function (layer) {
      if (!this.hasLayer(layer)) {
        return this;
      }
      if (layer in this._layers) {
        layer = this._layers[layer];
      }
  
      layer.off(L.FeatureGroup.EVENTS, this._propagateEvent, this);
  
      L.LayerGroup.prototype.removeLayer.call(this, layer);
  
      if (this._popupContent) {
        this.invoke('unbindPopup');
      }
  
      return this.fire('layerremove', {layer: layer});
    },
  
    bindPopup: function (content, options) {
      this._popupContent = content;
      this._popupOptions = options;
      return this.invoke('bindPopup', content, options);
    },
  
    openPopup: function (latlng) {
      // open popup on the first layer
      for (var id in this._layers) {
        this._layers[id].openPopup(latlng);
        break;
      }
      return this;
    },
  
    setStyle: function (style) {
      return this.invoke('setStyle', style);
    },
  
    bringToFront: function () {
      return this.invoke('bringToFront');
    },
  
    bringToBack: function () {
      return this.invoke('bringToBack');
    },
  
    getBounds: function () {
      var bounds = new L.LatLngBounds();
  
      this.eachLayer(function (layer) {
        bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds());
      });
  
      return bounds;
    },
  
    _propagateEvent: function (e) {
      e = L.extend({
        layer: e.target,
        target: this
      }, e);
      this.fire(e.type, e);
    }
  });
  
  L.featureGroup = function (layers) {
    return new L.FeatureGroup(layers);
  };
  
  
  /*
   * L.Path is a base class for rendering vector paths on a map. Inherited by Polyline, Circle, etc.
   */
  
  L.Path = L.Class.extend({
    includes: [L.Mixin.Events],
  
    statics: {
      // how much to extend the clip area around the map view
      // (relative to its size, e.g. 0.5 is half the screen in each direction)
      // set it so that SVG element doesn't exceed 1280px (vectors flicker on dragend if it is)
      CLIP_PADDING: (function () {
        var max = L.Browser.mobile ? 1280 : 2000,
            target = (max / Math.max(window.outerWidth, window.outerHeight) - 1) / 2;
        return Math.max(0, Math.min(0.5, target));
      })()
    },
  
    options: {
      stroke: true,
      color: '#0033ff',
      dashArray: null,
      lineCap: null,
      lineJoin: null,
      weight: 5,
      opacity: 0.5,
  
      fill: false,
      fillColor: null, //same as color by default
      fillOpacity: 0.2,
  
      clickable: true
    },
  
    initialize: function (options) {
      L.setOptions(this, options);
    },
  
    onAdd: function (map) {
      this._map = map;
  
      if (!this._container) {
        this._initElements();
        this._initEvents();
      }
  
      this.projectLatlngs();
      this._updatePath();
  
      if (this._container) {
        this._map._pathRoot.appendChild(this._container);
      }
  
      this.fire('add');
  
      map.on({
        'viewreset': this.projectLatlngs,
        'moveend': this._updatePath
      }, this);
    },
  
    addTo: function (map) {
      map.addLayer(this);
      return this;
    },
  
    onRemove: function (map) {
      map._pathRoot.removeChild(this._container);
  
      // Need to fire remove event before we set _map to null as the event hooks might need the object
      this.fire('remove');
      this._map = null;
  
      if (L.Browser.vml) {
        this._container = null;
        this._stroke = null;
        this._fill = null;
      }
  
      map.off({
        'viewreset': this.projectLatlngs,
        'moveend': this._updatePath
      }, this);
    },
  
    projectLatlngs: function () {
      // do all projection stuff here
    },
  
    setStyle: function (style) {
      L.setOptions(this, style);
  
      if (this._container) {
        this._updateStyle();
      }
  
      return this;
    },
  
    redraw: function () {
      if (this._map) {
        this.projectLatlngs();
        this._updatePath();
      }
      return this;
    }
  });
  
  L.Map.include({
    _updatePathViewport: function () {
      var p = L.Path.CLIP_PADDING,
          size = this.getSize(),
          panePos = L.DomUtil.getPosition(this._mapPane),
          min = panePos.multiplyBy(-1)._subtract(size.multiplyBy(p)._round()),
          max = min.add(size.multiplyBy(1 + p * 2)._round());
  
      this._pathViewport = new L.Bounds(min, max);
    }
  });
  
  
  /*
   * Extends L.Path with SVG-specific rendering code.
   */
  
  L.Path.SVG_NS = 'http://www.w3.org/2000/svg';
  
  L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect);
  
  L.Path = L.Path.extend({
    statics: {
      SVG: L.Browser.svg
    },
  
    bringToFront: function () {
      var root = this._map._pathRoot,
          path = this._container;
  
      if (path && root.lastChild !== path) {
        root.appendChild(path);
      }
      return this;
    },
  
    bringToBack: function () {
      var root = this._map._pathRoot,
          path = this._container,
          first = root.firstChild;
  
      if (path && first !== path) {
        root.insertBefore(path, first);
      }
      return this;
    },
  
    getPathString: function () {
      // form path string here
    },
  
    _createElement: function (name) {
      return document.createElementNS(L.Path.SVG_NS, name);
    },
  
    _initElements: function () {
      this._map._initPathRoot();
      this._initPath();
      this._initStyle();
    },
  
    _initPath: function () {
      this._container = this._createElement('g');
  
      this._path = this._createElement('path');
  
      if (this.options.className) {
        L.DomUtil.addClass(this._path, this.options.className);
      }
  
      this._container.appendChild(this._path);
    },
  
    _initStyle: function () {
      if (this.options.stroke) {
        this._path.setAttribute('stroke-linejoin', 'round');
        this._path.setAttribute('stroke-linecap', 'round');
      }
      if (this.options.fill) {
        this._path.setAttribute('fill-rule', 'evenodd');
      }
      if (this.options.pointerEvents) {
        this._path.setAttribute('pointer-events', this.options.pointerEvents);
      }
      if (!this.options.clickable && !this.options.pointerEvents) {
        this._path.setAttribute('pointer-events', 'none');
      }
      this._updateStyle();
    },
  
    _updateStyle: function () {
      if (this.options.stroke) {
        this._path.setAttribute('stroke', this.options.color);
        this._path.setAttribute('stroke-opacity', this.options.opacity);
        this._path.setAttribute('stroke-width', this.options.weight);
        if (this.options.dashArray) {
          this._path.setAttribute('stroke-dasharray', this.options.dashArray);
        } else {
          this._path.removeAttribute('stroke-dasharray');
        }
        if (this.options.lineCap) {
          this._path.setAttribute('stroke-linecap', this.options.lineCap);
        }
        if (this.options.lineJoin) {
          this._path.setAttribute('stroke-linejoin', this.options.lineJoin);
        }
      } else {
        this._path.setAttribute('stroke', 'none');
      }
      if (this.options.fill) {
        this._path.setAttribute('fill', this.options.fillColor || this.options.color);
        this._path.setAttribute('fill-opacity', this.options.fillOpacity);
      } else {
        this._path.setAttribute('fill', 'none');
      }
    },
  
    _updatePath: function () {
      var str = this.getPathString();
      if (!str) {
        // fix webkit empty string parsing bug
        str = 'M0 0';
      }
      this._path.setAttribute('d', str);
    },
  
    // TODO remove duplication with L.Map
    _initEvents: function () {
      if (this.options.clickable) {
        if (L.Browser.svg || !L.Browser.vml) {
          L.DomUtil.addClass(this._path, 'leaflet-clickable');
        }
  
        L.DomEvent.on(this._container, 'click', this._onMouseClick, this);
  
        var events = ['dblclick', 'mousedown', 'mouseover',
                      'mouseout', 'mousemove', 'contextmenu'];
        for (var i = 0; i < events.length; i++) {
          L.DomEvent.on(this._container, events[i], this._fireMouseEvent, this);
        }
      }
    },
  
    _onMouseClick: function (e) {
      if (this._map.dragging && this._map.dragging.moved()) { return; }
  
      this._fireMouseEvent(e);
    },
  
    _fireMouseEvent: function (e) {
      if (!this.hasEventListeners(e.type)) { return; }
  
      var map = this._map,
          containerPoint = map.mouseEventToContainerPoint(e),
          layerPoint = map.containerPointToLayerPoint(containerPoint),
          latlng = map.layerPointToLatLng(layerPoint);
  
      this.fire(e.type, {
        latlng: latlng,
        layerPoint: layerPoint,
        containerPoint: containerPoint,
        originalEvent: e
      });
  
      if (e.type === 'contextmenu') {
        L.DomEvent.preventDefault(e);
      }
      if (e.type !== 'mousemove') {
        L.DomEvent.stopPropagation(e);
      }
    }
  });
  
  L.Map.include({
    _initPathRoot: function () {
      if (!this._pathRoot) {
        this._pathRoot = L.Path.prototype._createElement('svg');
        this._panes.overlayPane.appendChild(this._pathRoot);
  
        if (this.options.zoomAnimation && L.Browser.any3d) {
          L.DomUtil.addClass(this._pathRoot, 'leaflet-zoom-animated');
  
          this.on({
            'zoomanim': this._animatePathZoom,
            'zoomend': this._endPathZoom
          });
        } else {
          L.DomUtil.addClass(this._pathRoot, 'leaflet-zoom-hide');
        }
  
        this.on('moveend', this._updateSvgViewport);
        this._updateSvgViewport();
      }
    },
  
    _animatePathZoom: function (e) {
      var scale = this.getZoomScale(e.zoom),
          offset = this._getCenterOffset(e.center)._multiplyBy(-scale)._add(this._pathViewport.min);
  
      this._pathRoot.style[L.DomUtil.TRANSFORM] =
              L.DomUtil.getTranslateString(offset) + ' scale(' + scale + ') ';
  
      this._pathZooming = true;
    },
  
    _endPathZoom: function () {
      this._pathZooming = false;
    },
  
    _updateSvgViewport: function () {
  
      if (this._pathZooming) {
        // Do not update SVGs while a zoom animation is going on otherwise the animation will break.
        // When the zoom animation ends we will be updated again anyway
        // This fixes the case where you do a momentum move and zoom while the move is still ongoing.
        return;
      }
  
      this._updatePathViewport();
  
      var vp = this._pathViewport,
          min = vp.min,
          max = vp.max,
          width = max.x - min.x,
          height = max.y - min.y,
          root = this._pathRoot,
          pane = this._panes.overlayPane;
  
      // Hack to make flicker on drag end on mobile webkit less irritating
      if (L.Browser.mobileWebkit) {
        pane.removeChild(root);
      }
  
      L.DomUtil.setPosition(root, min);
      root.setAttribute('width', width);
      root.setAttribute('height', height);
      root.setAttribute('viewBox', [min.x, min.y, width, height].join(' '));
  
      if (L.Browser.mobileWebkit) {
        pane.appendChild(root);
      }
    }
  });
  
  
  /*
   * Popup extension to L.Path (polylines, polygons, circles), adding popup-related methods.
   */
  
  L.Path.include({
  
    bindPopup: function (content, options) {
  
      if (content instanceof L.Popup) {
        this._popup = content;
      } else {
        if (!this._popup || options) {
          this._popup = new L.Popup(options, this);
        }
        this._popup.setContent(content);
      }
  
      if (!this._popupHandlersAdded) {
        this
            .on('click', this._openPopup, this)
            .on('remove', this.closePopup, this);
  
        this._popupHandlersAdded = true;
      }
  
      return this;
    },
  
    unbindPopup: function () {
      if (this._popup) {
        this._popup = null;
        this
            .off('click', this._openPopup)
            .off('remove', this.closePopup);
  
        this._popupHandlersAdded = false;
      }
      return this;
    },
  
    openPopup: function (latlng) {
  
      if (this._popup) {
        // open the popup from one of the path's points if not specified
        latlng = latlng || this._latlng ||
                 this._latlngs[Math.floor(this._latlngs.length / 2)];
  
        this._openPopup({latlng: latlng});
      }
  
      return this;
    },
  
    closePopup: function () {
      if (this._popup) {
        this._popup._close();
      }
      return this;
    },
  
    _openPopup: function (e) {
      this._popup.setLatLng(e.latlng);
      this._map.openPopup(this._popup);
    }
  });
  
  
  /*
   * Vector rendering for IE6-8 through VML.
   * Thanks to Dmitry Baranovsky and his Raphael library for inspiration!
   */
  
  L.Browser.vml = !L.Browser.svg && (function () {
    try {
      var div = document.createElement('div');
      div.innerHTML = '<v:shape adj="1"/>';
  
      var shape = div.firstChild;
      shape.style.behavior = 'url(#default#VML)';
  
      return shape && (typeof shape.adj === 'object');
  
    } catch (e) {
      return false;
    }
  }());
  
  L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({
    statics: {
      VML: true,
      CLIP_PADDING: 0.02
    },
  
    _createElement: (function () {
      try {
        document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml');
        return function (name) {
          return document.createElement('<lvml:' + name + ' class="lvml">');
        };
      } catch (e) {
        return function (name) {
          return document.createElement(
                  '<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">');
        };
      }
    }()),
  
    _initPath: function () {
      var container = this._container = this._createElement('shape');
  
      L.DomUtil.addClass(container, 'leaflet-vml-shape' +
        (this.options.className ? ' ' + this.options.className : ''));
  
      if (this.options.clickable) {
        L.DomUtil.addClass(container, 'leaflet-clickable');
      }
  
      container.coordsize = '1 1';
  
      this._path = this._createElement('path');
      container.appendChild(this._path);
  
      this._map._pathRoot.appendChild(container);
    },
  
    _initStyle: function () {
      this._updateStyle();
    },
  
    _updateStyle: function () {
      var stroke = this._stroke,
          fill = this._fill,
          options = this.options,
          container = this._container;
  
      container.stroked = options.stroke;
      container.filled = options.fill;
  
      if (options.stroke) {
        if (!stroke) {
          stroke = this._stroke = this._createElement('stroke');
          stroke.endcap = 'round';
          container.appendChild(stroke);
        }
        stroke.weight = options.weight + 'px';
        stroke.color = options.color;
        stroke.opacity = options.opacity;
  
        if (options.dashArray) {
          stroke.dashStyle = L.Util.isArray(options.dashArray) ?
              options.dashArray.join(' ') :
              options.dashArray.replace(/( *, *)/g, ' ');
        } else {
          stroke.dashStyle = '';
        }
        if (options.lineCap) {
          stroke.endcap = options.lineCap.replace('butt', 'flat');
        }
        if (options.lineJoin) {
          stroke.joinstyle = options.lineJoin;
        }
  
      } else if (stroke) {
        container.removeChild(stroke);
        this._stroke = null;
      }
  
      if (options.fill) {
        if (!fill) {
          fill = this._fill = this._createElement('fill');
          container.appendChild(fill);
        }
        fill.color = options.fillColor || options.color;
        fill.opacity = options.fillOpacity;
  
      } else if (fill) {
        container.removeChild(fill);
        this._fill = null;
      }
    },
  
    _updatePath: function () {
      var style = this._container.style;
  
      style.display = 'none';
      this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug
      style.display = '';
    }
  });
  
  L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : {
    _initPathRoot: function () {
      if (this._pathRoot) { return; }
  
      var root = this._pathRoot = document.createElement('div');
      root.className = 'leaflet-vml-container';
      this._panes.overlayPane.appendChild(root);
  
      this.on('moveend', this._updatePathViewport);
      this._updatePathViewport();
    }
  });
  
  
  /*
   * Vector rendering for all browsers that support canvas.
   */
  
  L.Browser.canvas = (function () {
    return !!document.createElement('canvas').getContext;
  }());
  
  L.Path = (L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? L.Path : L.Path.extend({
    statics: {
      //CLIP_PADDING: 0.02, // not sure if there's a need to set it to a small value
      CANVAS: true,
      SVG: false
    },
  
    redraw: function () {
      if (this._map) {
        this.projectLatlngs();
        this._requestUpdate();
      }
      return this;
    },
  
    setStyle: function (style) {
      L.setOptions(this, style);
  
      if (this._map) {
        this._updateStyle();
        this._requestUpdate();
      }
      return this;
    },
  
    onRemove: function (map) {
      map
          .off('viewreset', this.projectLatlngs, this)
          .off('moveend', this._updatePath, this);
  
      if (this.options.clickable) {
        this._map.off('click', this._onClick, this);
        this._map.off('mousemove', this._onMouseMove, this);
      }
  
      this._requestUpdate();
      
      this.fire('remove');
      this._map = null;
    },
  
    _requestUpdate: function () {
      if (this._map && !L.Path._updateRequest) {
        L.Path._updateRequest = L.Util.requestAnimFrame(this._fireMapMoveEnd, this._map);
      }
    },
  
    _fireMapMoveEnd: function () {
      L.Path._updateRequest = null;
      this.fire('moveend');
    },
  
    _initElements: function () {
      this._map._initPathRoot();
      this._ctx = this._map._canvasCtx;
    },
  
    _updateStyle: function () {
      var options = this.options;
  
      if (options.stroke) {
        this._ctx.lineWidth = options.weight;
        this._ctx.strokeStyle = options.color;
      }
      if (options.fill) {
        this._ctx.fillStyle = options.fillColor || options.color;
      }
    },
  
    _drawPath: function () {
      var i, j, len, len2, point, drawMethod;
  
      this._ctx.beginPath();
  
      for (i = 0, len = this._parts.length; i < len; i++) {
        for (j = 0, len2 = this._parts[i].length; j < len2; j++) {
          point = this._parts[i][j];
          drawMethod = (j === 0 ? 'move' : 'line') + 'To';
  
          this._ctx[drawMethod](point.x, point.y);
        }
        // TODO refactor ugly hack
        if (this instanceof L.Polygon) {
          this._ctx.closePath();
        }
      }
    },
  
    _checkIfEmpty: function () {
      return !this._parts.length;
    },
  
    _updatePath: function () {
      if (this._checkIfEmpty()) { return; }
  
      var ctx = this._ctx,
          options = this.options;
  
      this._drawPath();
      ctx.save();
      this._updateStyle();
  
      if (options.fill) {
        ctx.globalAlpha = options.fillOpacity;
        ctx.fill();
      }
  
      if (options.stroke) {
        ctx.globalAlpha = options.opacity;
        ctx.stroke();
      }
  
      ctx.restore();
  
      // TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature
    },
  
    _initEvents: function () {
      if (this.options.clickable) {
        // TODO dblclick
        this._map.on('mousemove', this._onMouseMove, this);
        this._map.on('click', this._onClick, this);
      }
    },
  
    _onClick: function (e) {
      if (this._containsPoint(e.layerPoint)) {
        this.fire('click', e);
      }
    },
  
    _onMouseMove: function (e) {
      if (!this._map || this._map._animatingZoom) { return; }
  
      // TODO don't do on each move
      if (this._containsPoint(e.layerPoint)) {
        this._ctx.canvas.style.cursor = 'pointer';
        this._mouseInside = true;
        this.fire('mouseover', e);
  
      } else if (this._mouseInside) {
        this._ctx.canvas.style.cursor = '';
        this._mouseInside = false;
        this.fire('mouseout', e);
      }
    }
  });
  
  L.Map.include((L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? {} : {
    _initPathRoot: function () {
      var root = this._pathRoot,
          ctx;
  
      if (!root) {
        root = this._pathRoot = document.createElement('canvas');
        root.style.position = 'absolute';
        ctx = this._canvasCtx = root.getContext('2d');
  
        ctx.lineCap = 'round';
        ctx.lineJoin = 'round';
  
        this._panes.overlayPane.appendChild(root);
  
        if (this.options.zoomAnimation) {
          this._pathRoot.className = 'leaflet-zoom-animated';
          this.on('zoomanim', this._animatePathZoom);
          this.on('zoomend', this._endPathZoom);
        }
        this.on('moveend', this._updateCanvasViewport);
        this._updateCanvasViewport();
      }
    },
  
    _updateCanvasViewport: function () {
      // don't redraw while zooming. See _updateSvgViewport for more details
      if (this._pathZooming) { return; }
      this._updatePathViewport();
  
      var vp = this._pathViewport,
          min = vp.min,
          size = vp.max.subtract(min),
          root = this._pathRoot;
  
      //TODO check if this works properly on mobile webkit
      L.DomUtil.setPosition(root, min);
      root.width = size.x;
      root.height = size.y;
      root.getContext('2d').translate(-min.x, -min.y);
    }
  });
  
  
  /*
   * L.LineUtil contains different utility functions for line segments
   * and polylines (clipping, simplification, distances, etc.)
   */
  
  /*jshint bitwise:false */ // allow bitwise operations for this file
  
  L.LineUtil = {
  
    // Simplify polyline with vertex reduction and Douglas-Peucker simplification.
    // Improves rendering performance dramatically by lessening the number of points to draw.
  
    simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
      if (!tolerance || !points.length) {
        return points.slice();
      }
  
      var sqTolerance = tolerance * tolerance;
  
      // stage 1: vertex reduction
      points = this._reducePoints(points, sqTolerance);
  
      // stage 2: Douglas-Peucker simplification
      points = this._simplifyDP(points, sqTolerance);
  
      return points;
    },
  
    // distance from a point to a segment between two points
    pointToSegmentDistance:  function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
      return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
    },
  
    closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
      return this._sqClosestPointOnSegment(p, p1, p2);
    },
  
    // Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
    _simplifyDP: function (points, sqTolerance) {
  
      var len = points.length,
          ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array,
          markers = new ArrayConstructor(len);
  
      markers[0] = markers[len - 1] = 1;
  
      this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
  
      var i,
          newPoints = [];
  
      for (i = 0; i < len; i++) {
        if (markers[i]) {
          newPoints.push(points[i]);
        }
      }
  
      return newPoints;
    },
  
    _simplifyDPStep: function (points, markers, sqTolerance, first, last) {
  
      var maxSqDist = 0,
          index, i, sqDist;
  
      for (i = first + 1; i <= last - 1; i++) {
        sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
  
        if (sqDist > maxSqDist) {
          index = i;
          maxSqDist = sqDist;
        }
      }
  
      if (maxSqDist > sqTolerance) {
        markers[index] = 1;
  
        this._simplifyDPStep(points, markers, sqTolerance, first, index);
        this._simplifyDPStep(points, markers, sqTolerance, index, last);
      }
    },
  
    // reduce points that are too close to each other to a single point
    _reducePoints: function (points, sqTolerance) {
      var reducedPoints = [points[0]];
  
      for (var i = 1, prev = 0, len = points.length; i < len; i++) {
        if (this._sqDist(points[i], points[prev]) > sqTolerance) {
          reducedPoints.push(points[i]);
          prev = i;
        }
      }
      if (prev < len - 1) {
        reducedPoints.push(points[len - 1]);
      }
      return reducedPoints;
    },
  
    // Cohen-Sutherland line clipping algorithm.
    // Used to avoid rendering parts of a polyline that are not currently visible.
  
    clipSegment: function (a, b, bounds, useLastCode) {
      var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
          codeB = this._getBitCode(b, bounds),
  
          codeOut, p, newCode;
  
      // save 2nd code to avoid calculating it on the next segment
      this._lastCode = codeB;
  
      while (true) {
        // if a,b is inside the clip window (trivial accept)
        if (!(codeA | codeB)) {
          return [a, b];
        // if a,b is outside the clip window (trivial reject)
        } else if (codeA & codeB) {
          return false;
        // other cases
        } else {
          codeOut = codeA || codeB;
          p = this._getEdgeIntersection(a, b, codeOut, bounds);
          newCode = this._getBitCode(p, bounds);
  
          if (codeOut === codeA) {
            a = p;
            codeA = newCode;
          } else {
            b = p;
            codeB = newCode;
          }
        }
      }
    },
  
    _getEdgeIntersection: function (a, b, code, bounds) {
      var dx = b.x - a.x,
          dy = b.y - a.y,
          min = bounds.min,
          max = bounds.max;
  
      if (code & 8) { // top
        return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y);
      } else if (code & 4) { // bottom
        return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y);
      } else if (code & 2) { // right
        return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx);
      } else if (code & 1) { // left
        return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx);
      }
    },
  
    _getBitCode: function (/*Point*/ p, bounds) {
      var code = 0;
  
      if (p.x < bounds.min.x) { // left
        code |= 1;
      } else if (p.x > bounds.max.x) { // right
        code |= 2;
      }
      if (p.y < bounds.min.y) { // bottom
        code |= 4;
      } else if (p.y > bounds.max.y) { // top
        code |= 8;
      }
  
      return code;
    },
  
    // square distance (to avoid unnecessary Math.sqrt calls)
    _sqDist: function (p1, p2) {
      var dx = p2.x - p1.x,
          dy = p2.y - p1.y;
      return dx * dx + dy * dy;
    },
  
    // return closest point on segment or distance to that point
    _sqClosestPointOnSegment: function (p, p1, p2, sqDist) {
      var x = p1.x,
          y = p1.y,
          dx = p2.x - x,
          dy = p2.y - y,
          dot = dx * dx + dy * dy,
          t;
  
      if (dot > 0) {
        t = ((p.x - x) * dx + (p.y - y) * dy) / dot;
  
        if (t > 1) {
          x = p2.x;
          y = p2.y;
        } else if (t > 0) {
          x += dx * t;
          y += dy * t;
        }
      }
  
      dx = p.x - x;
      dy = p.y - y;
  
      return sqDist ? dx * dx + dy * dy : new L.Point(x, y);
    }
  };
  
  
  /*
   * L.Polyline is used to display polylines on a map.
   */
  
  L.Polyline = L.Path.extend({
    initialize: function (latlngs, options) {
      L.Path.prototype.initialize.call(this, options);
  
      this._latlngs = this._convertLatLngs(latlngs);
    },
  
    options: {
      // how much to simplify the polyline on each zoom level
      // more = better performance and smoother look, less = more accurate
      smoothFactor: 1.0,
      noClip: false
    },
  
    projectLatlngs: function () {
      this._originalPoints = [];
  
      for (var i = 0, len = this._latlngs.length; i < len; i++) {
        this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]);
      }
    },
  
    getPathString: function () {
      for (var i = 0, len = this._parts.length, str = ''; i < len; i++) {
        str += this._getPathPartStr(this._parts[i]);
      }
      return str;
    },
  
    getLatLngs: function () {
      return this._latlngs;
    },
  
    setLatLngs: function (latlngs) {
      this._latlngs = this._convertLatLngs(latlngs);
      return this.redraw();
    },
  
    addLatLng: function (latlng) {
      this._latlngs.push(L.latLng(latlng));
      return this.redraw();
    },
  
    spliceLatLngs: function () { // (Number index, Number howMany)
      var removed = [].splice.apply(this._latlngs, arguments);
      this._convertLatLngs(this._latlngs, true);
      this.redraw();
      return removed;
    },
  
    closestLayerPoint: function (p) {
      var minDistance = Infinity, parts = this._parts, p1, p2, minPoint = null;
  
      for (var j = 0, jLen = parts.length; j < jLen; j++) {
        var points = parts[j];
        for (var i = 1, len = points.length; i < len; i++) {
          p1 = points[i - 1];
          p2 = points[i];
          var sqDist = L.LineUtil._sqClosestPointOnSegment(p, p1, p2, true);
          if (sqDist < minDistance) {
            minDistance = sqDist;
            minPoint = L.LineUtil._sqClosestPointOnSegment(p, p1, p2);
          }
        }
      }
      if (minPoint) {
        minPoint.distance = Math.sqrt(minDistance);
      }
      return minPoint;
    },
  
    getBounds: function () {
      return new L.LatLngBounds(this.getLatLngs());
    },
  
    _convertLatLngs: function (latlngs, overwrite) {
      var i, len, target = overwrite ? latlngs : [];
  
      for (i = 0, len = latlngs.length; i < len; i++) {
        if (L.Util.isArray(latlngs[i]) && typeof latlngs[i][0] !== 'number') {
          return;
        }
        target[i] = L.latLng(latlngs[i]);
      }
      return target;
    },
  
    _initEvents: function () {
      L.Path.prototype._initEvents.call(this);
    },
  
    _getPathPartStr: function (points) {
      var round = L.Path.VML;
  
      for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) {
        p = points[j];
        if (round) {
          p._round();
        }
        str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
      }
      return str;
    },
  
    _clipPoints: function () {
      var points = this._originalPoints,
          len = points.length,
          i, k, segment;
  
      if (this.options.noClip) {
        this._parts = [points];
        return;
      }
  
      this._parts = [];
  
      var parts = this._parts,
          vp = this._map._pathViewport,
          lu = L.LineUtil;
  
      for (i = 0, k = 0; i < len - 1; i++) {
        segment = lu.clipSegment(points[i], points[i + 1], vp, i);
        if (!segment) {
          continue;
        }
  
        parts[k] = parts[k] || [];
        parts[k].push(segment[0]);
  
        // if segment goes out of screen, or it's the last one, it's the end of the line part
        if ((segment[1] !== points[i + 1]) || (i === len - 2)) {
          parts[k].push(segment[1]);
          k++;
        }
      }
    },
  
    // simplify each clipped part of the polyline
    _simplifyPoints: function () {
      var parts = this._parts,
          lu = L.LineUtil;
  
      for (var i = 0, len = parts.length; i < len; i++) {
        parts[i] = lu.simplify(parts[i], this.options.smoothFactor);
      }
    },
  
    _updatePath: function () {
      if (!this._map) { return; }
  
      this._clipPoints();
      this._simplifyPoints();
  
      L.Path.prototype._updatePath.call(this);
    }
  });
  
  L.polyline = function (latlngs, options) {
    return new L.Polyline(latlngs, options);
  };
  
  
  /*
   * L.PolyUtil contains utility functions for polygons (clipping, etc.).
   */
  
  /*jshint bitwise:false */ // allow bitwise operations here
  
  L.PolyUtil = {};
  
  /*
   * Sutherland-Hodgeman polygon clipping algorithm.
   * Used to avoid rendering parts of a polygon that are not currently visible.
   */
  L.PolyUtil.clipPolygon = function (points, bounds) {
    var clippedPoints,
        edges = [1, 4, 2, 8],
        i, j, k,
        a, b,
        len, edge, p,
        lu = L.LineUtil;
  
    for (i = 0, len = points.length; i < len; i++) {
      points[i]._code = lu._getBitCode(points[i], bounds);
    }
  
    // for each edge (left, bottom, right, top)
    for (k = 0; k < 4; k++) {
      edge = edges[k];
      clippedPoints = [];
  
      for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
        a = points[i];
        b = points[j];
  
        // if a is inside the clip window
        if (!(a._code & edge)) {
          // if b is outside the clip window (a->b goes out of screen)
          if (b._code & edge) {
            p = lu._getEdgeIntersection(b, a, edge, bounds);
            p._code = lu._getBitCode(p, bounds);
            clippedPoints.push(p);
          }
          clippedPoints.push(a);
  
        // else if b is inside the clip window (a->b enters the screen)
        } else if (!(b._code & edge)) {
          p = lu._getEdgeIntersection(b, a, edge, bounds);
          p._code = lu._getBitCode(p, bounds);
          clippedPoints.push(p);
        }
      }
      points = clippedPoints;
    }
  
    return points;
  };
  
  
  /*
   * L.Polygon is used to display polygons on a map.
   */
  
  L.Polygon = L.Polyline.extend({
    options: {
      fill: true
    },
  
    initialize: function (latlngs, options) {
      L.Polyline.prototype.initialize.call(this, latlngs, options);
      this._initWithHoles(latlngs);
    },
  
    _initWithHoles: function (latlngs) {
      var i, len, hole;
      if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
        this._latlngs = this._convertLatLngs(latlngs[0]);
        this._holes = latlngs.slice(1);
  
        for (i = 0, len = this._holes.length; i < len; i++) {
          hole = this._holes[i] = this._convertLatLngs(this._holes[i]);
          if (hole[0].equals(hole[hole.length - 1])) {
            hole.pop();
          }
        }
      }
  
      // filter out last point if its equal to the first one
      latlngs = this._latlngs;
  
      if (latlngs.length >= 2 && latlngs[0].equals(latlngs[latlngs.length - 1])) {
        latlngs.pop();
      }
    },
  
    projectLatlngs: function () {
      L.Polyline.prototype.projectLatlngs.call(this);
  
      // project polygon holes points
      // TODO move this logic to Polyline to get rid of duplication
      this._holePoints = [];
  
      if (!this._holes) { return; }
  
      var i, j, len, len2;
  
      for (i = 0, len = this._holes.length; i < len; i++) {
        this._holePoints[i] = [];
  
        for (j = 0, len2 = this._holes[i].length; j < len2; j++) {
          this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]);
        }
      }
    },
  
    setLatLngs: function (latlngs) {
      if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
        this._initWithHoles(latlngs);
        return this.redraw();
      } else {
        return L.Polyline.prototype.setLatLngs.call(this, latlngs);
      }
    },
  
    _clipPoints: function () {
      var points = this._originalPoints,
          newParts = [];
  
      this._parts = [points].concat(this._holePoints);
  
      if (this.options.noClip) { return; }
  
      for (var i = 0, len = this._parts.length; i < len; i++) {
        var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport);
        if (clipped.length) {
          newParts.push(clipped);
        }
      }
  
      this._parts = newParts;
    },
  
    _getPathPartStr: function (points) {
      var str = L.Polyline.prototype._getPathPartStr.call(this, points);
      return str + (L.Browser.svg ? 'z' : 'x');
    }
  });
  
  L.polygon = function (latlngs, options) {
    return new L.Polygon(latlngs, options);
  };
  
  
  /*
   * Contains L.MultiPolyline and L.MultiPolygon layers.
   */
  
  (function () {
    function createMulti(Klass) {
  
      return L.FeatureGroup.extend({
  
        initialize: function (latlngs, options) {
          this._layers = {};
          this._options = options;
          this.setLatLngs(latlngs);
        },
  
        setLatLngs: function (latlngs) {
          var i = 0,
              len = latlngs.length;
  
          this.eachLayer(function (layer) {
            if (i < len) {
              layer.setLatLngs(latlngs[i++]);
            } else {
              this.removeLayer(layer);
            }
          }, this);
  
          while (i < len) {
            this.addLayer(new Klass(latlngs[i++], this._options));
          }
  
          return this;
        },
  
        getLatLngs: function () {
          var latlngs = [];
  
          this.eachLayer(function (layer) {
            latlngs.push(layer.getLatLngs());
          });
  
          return latlngs;
        }
      });
    }
  
    L.MultiPolyline = createMulti(L.Polyline);
    L.MultiPolygon = createMulti(L.Polygon);
  
    L.multiPolyline = function (latlngs, options) {
      return new L.MultiPolyline(latlngs, options);
    };
  
    L.multiPolygon = function (latlngs, options) {
      return new L.MultiPolygon(latlngs, options);
    };
  }());
  
  
  /*
   * L.Rectangle extends Polygon and creates a rectangle when passed a LatLngBounds object.
   */
  
  L.Rectangle = L.Polygon.extend({
    initialize: function (latLngBounds, options) {
      L.Polygon.prototype.initialize.call(this, this._boundsToLatLngs(latLngBounds), options);
    },
  
    setBounds: function (latLngBounds) {
      this.setLatLngs(this._boundsToLatLngs(latLngBounds));
    },
  
    _boundsToLatLngs: function (latLngBounds) {
      latLngBounds = L.latLngBounds(latLngBounds);
      return [
        latLngBounds.getSouthWest(),
        latLngBounds.getNorthWest(),
        latLngBounds.getNorthEast(),
        latLngBounds.getSouthEast()
      ];
    }
  });
  
  L.rectangle = function (latLngBounds, options) {
    return new L.Rectangle(latLngBounds, options);
  };
  
  
  /*
   * L.Circle is a circle overlay (with a certain radius in meters).
   */
  
  L.Circle = L.Path.extend({
    initialize: function (latlng, radius, options) {
      L.Path.prototype.initialize.call(this, options);
  
      this._latlng = L.latLng(latlng);
      this._mRadius = radius;
    },
  
    options: {
      fill: true
    },
  
    setLatLng: function (latlng) {
      this._latlng = L.latLng(latlng);
      return this.redraw();
    },
  
    setRadius: function (radius) {
      this._mRadius = radius;
      return this.redraw();
    },
  
    projectLatlngs: function () {
      var lngRadius = this._getLngRadius(),
          latlng = this._latlng,
          pointLeft = this._map.latLngToLayerPoint([latlng.lat, latlng.lng - lngRadius]);
  
      this._point = this._map.latLngToLayerPoint(latlng);
      this._radius = Math.max(this._point.x - pointLeft.x, 1);
    },
  
    getBounds: function () {
      var lngRadius = this._getLngRadius(),
          latRadius = (this._mRadius / 40075017) * 360,
          latlng = this._latlng;
  
      return new L.LatLngBounds(
              [latlng.lat - latRadius, latlng.lng - lngRadius],
              [latlng.lat + latRadius, latlng.lng + lngRadius]);
    },
  
    getLatLng: function () {
      return this._latlng;
    },
  
    getPathString: function () {
      var p = this._point,
          r = this._radius;
  
      if (this._checkIfEmpty()) {
        return '';
      }
  
      if (L.Browser.svg) {
        return 'M' + p.x + ',' + (p.y - r) +
               'A' + r + ',' + r + ',0,1,1,' +
               (p.x - 0.1) + ',' + (p.y - r) + ' z';
      } else {
        p._round();
        r = Math.round(r);
        return 'AL ' + p.x + ',' + p.y + ' ' + r + ',' + r + ' 0,' + (65535 * 360);
      }
    },
  
    getRadius: function () {
      return this._mRadius;
    },
  
    // TODO Earth hardcoded, move into projection code!
  
    _getLatRadius: function () {
      return (this._mRadius / 40075017) * 360;
    },
  
    _getLngRadius: function () {
      return this._getLatRadius() / Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat);
    },
  
    _checkIfEmpty: function () {
      if (!this._map) {
        return false;
      }
      var vp = this._map._pathViewport,
          r = this._radius,
          p = this._point;
  
      return p.x - r > vp.max.x || p.y - r > vp.max.y ||
             p.x + r < vp.min.x || p.y + r < vp.min.y;
    }
  });
  
  L.circle = function (latlng, radius, options) {
    return new L.Circle(latlng, radius, options);
  };
  
  
  /*
   * L.CircleMarker is a circle overlay with a permanent pixel radius.
   */
  
  L.CircleMarker = L.Circle.extend({
    options: {
      radius: 10,
      weight: 2
    },
  
    initialize: function (latlng, options) {
      L.Circle.prototype.initialize.call(this, latlng, null, options);
      this._radius = this.options.radius;
    },
  
    projectLatlngs: function () {
      this._point = this._map.latLngToLayerPoint(this._latlng);
    },
  
    _updateStyle : function () {
      L.Circle.prototype._updateStyle.call(this);
      this.setRadius(this.options.radius);
    },
  
    setLatLng: function (latlng) {
      L.Circle.prototype.setLatLng.call(this, latlng);
      if (this._popup && this._popup._isOpen) {
        this._popup.setLatLng(latlng);
      }
      return this;
    },
  
    setRadius: function (radius) {
      this.options.radius = this._radius = radius;
      return this.redraw();
    },
  
    getRadius: function () {
      return this._radius;
    }
  });
  
  L.circleMarker = function (latlng, options) {
    return new L.CircleMarker(latlng, options);
  };
  
  
  /*
   * Extends L.Polyline to be able to manually detect clicks on Canvas-rendered polylines.
   */
  
  L.Polyline.include(!L.Path.CANVAS ? {} : {
    _containsPoint: function (p, closed) {
      var i, j, k, len, len2, dist, part,
          w = this.options.weight / 2;
  
      if (L.Browser.touch) {
        w += 10; // polyline click tolerance on touch devices
      }
  
      for (i = 0, len = this._parts.length; i < len; i++) {
        part = this._parts[i];
        for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
          if (!closed && (j === 0)) {
            continue;
          }
  
          dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]);
  
          if (dist <= w) {
            return true;
          }
        }
      }
      return false;
    }
  });
  
  
  /*
   * Extends L.Polygon to be able to manually detect clicks on Canvas-rendered polygons.
   */
  
  L.Polygon.include(!L.Path.CANVAS ? {} : {
    _containsPoint: function (p) {
      var inside = false,
          part, p1, p2,
          i, j, k,
          len, len2;
  
      // TODO optimization: check if within bounds first
  
      if (L.Polyline.prototype._containsPoint.call(this, p, true)) {
        // click on polygon border
        return true;
      }
  
      // ray casting algorithm for detecting if point is in polygon
  
      for (i = 0, len = this._parts.length; i < len; i++) {
        part = this._parts[i];
  
        for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
          p1 = part[j];
          p2 = part[k];
  
          if (((p1.y > p.y) !== (p2.y > p.y)) &&
              (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
            inside = !inside;
          }
        }
      }
  
      return inside;
    }
  });
  
  
  /*
   * Extends L.Circle with Canvas-specific code.
   */
  
  L.Circle.include(!L.Path.CANVAS ? {} : {
    _drawPath: function () {
      var p = this._point;
      this._ctx.beginPath();
      this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2, false);
    },
  
    _containsPoint: function (p) {
      var center = this._point,
          w2 = this.options.stroke ? this.options.weight / 2 : 0;
  
      return (p.distanceTo(center) <= this._radius + w2);
    }
  });
  
  
  /*
   * CircleMarker canvas specific drawing parts.
   */
  
  L.CircleMarker.include(!L.Path.CANVAS ? {} : {
    _updateStyle: function () {
      L.Path.prototype._updateStyle.call(this);
    }
  });
  
  
  /*
   * L.GeoJSON turns any GeoJSON data into a Leaflet layer.
   */
  
  L.GeoJSON = L.FeatureGroup.extend({
  
    initialize: function (geojson, options) {
      L.setOptions(this, options);
  
      this._layers = {};
  
      if (geojson) {
        this.addData(geojson);
      }
    },
  
    addData: function (geojson) {
      var features = L.Util.isArray(geojson) ? geojson : geojson.features,
          i, len, feature;
  
      if (features) {
        for (i = 0, len = features.length; i < len; i++) {
          // Only add this if geometry or geometries are set and not null
          feature = features[i];
          if (feature.geometries || feature.geometry || feature.features || feature.coordinates) {
            this.addData(features[i]);
          }
        }
        return this;
      }
  
      var options = this.options;
  
      if (options.filter && !options.filter(geojson)) { return; }
  
      var layer = L.GeoJSON.geometryToLayer(geojson, options.pointToLayer, options.coordsToLatLng, options);
      layer.feature = L.GeoJSON.asFeature(geojson);
  
      layer.defaultOptions = layer.options;
      this.resetStyle(layer);
  
      if (options.onEachFeature) {
        options.onEachFeature(geojson, layer);
      }
  
      return this.addLayer(layer);
    },
  
    resetStyle: function (layer) {
      var style = this.options.style;
      if (style) {
        // reset any custom styles
        L.Util.extend(layer.options, layer.defaultOptions);
  
        this._setLayerStyle(layer, style);
      }
    },
  
    setStyle: function (style) {
      this.eachLayer(function (layer) {
        this._setLayerStyle(layer, style);
      }, this);
    },
  
    _setLayerStyle: function (layer, style) {
      if (typeof style === 'function') {
        style = style(layer.feature);
      }
      if (layer.setStyle) {
        layer.setStyle(style);
      }
    }
  });
  
  L.extend(L.GeoJSON, {
    geometryToLayer: function (geojson, pointToLayer, coordsToLatLng, vectorOptions) {
      var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson,
          coords = geometry.coordinates,
          layers = [],
          latlng, latlngs, i, len;
  
      coordsToLatLng = coordsToLatLng || this.coordsToLatLng;
  
      switch (geometry.type) {
      case 'Point':
        latlng = coordsToLatLng(coords);
        return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
  
      case 'MultiPoint':
        for (i = 0, len = coords.length; i < len; i++) {
          latlng = coordsToLatLng(coords[i]);
          layers.push(pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng));
        }
        return new L.FeatureGroup(layers);
  
      case 'LineString':
        latlngs = this.coordsToLatLngs(coords, 0, coordsToLatLng);
        return new L.Polyline(latlngs, vectorOptions);
  
      case 'Polygon':
        if (coords.length === 2 && !coords[1].length) {
          throw new Error('Invalid GeoJSON object.');
        }
        latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
        return new L.Polygon(latlngs, vectorOptions);
  
      case 'MultiLineString':
        latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
        return new L.MultiPolyline(latlngs, vectorOptions);
  
      case 'MultiPolygon':
        latlngs = this.coordsToLatLngs(coords, 2, coordsToLatLng);
        return new L.MultiPolygon(latlngs, vectorOptions);
  
      case 'GeometryCollection':
        for (i = 0, len = geometry.geometries.length; i < len; i++) {
  
          layers.push(this.geometryToLayer({
            geometry: geometry.geometries[i],
            type: 'Feature',
            properties: geojson.properties
          }, pointToLayer, coordsToLatLng, vectorOptions));
        }
        return new L.FeatureGroup(layers);
  
      default:
        throw new Error('Invalid GeoJSON object.');
      }
    },
  
    coordsToLatLng: function (coords) { // (Array[, Boolean]) -> LatLng
      return new L.LatLng(coords[1], coords[0], coords[2]);
    },
  
    coordsToLatLngs: function (coords, levelsDeep, coordsToLatLng) { // (Array[, Number, Function]) -> Array
      var latlng, i, len,
          latlngs = [];
  
      for (i = 0, len = coords.length; i < len; i++) {
        latlng = levelsDeep ?
                this.coordsToLatLngs(coords[i], levelsDeep - 1, coordsToLatLng) :
                (coordsToLatLng || this.coordsToLatLng)(coords[i]);
  
        latlngs.push(latlng);
      }
  
      return latlngs;
    },
  
    latLngToCoords: function (latlng) {
      var coords = [latlng.lng, latlng.lat];
  
      if (latlng.alt !== undefined) {
        coords.push(latlng.alt);
      }
      return coords;
    },
  
    latLngsToCoords: function (latLngs) {
      var coords = [];
  
      for (var i = 0, len = latLngs.length; i < len; i++) {
        coords.push(L.GeoJSON.latLngToCoords(latLngs[i]));
      }
  
      return coords;
    },
  
    getFeature: function (layer, newGeometry) {
      return layer.feature ? L.extend({}, layer.feature, {geometry: newGeometry}) : L.GeoJSON.asFeature(newGeometry);
    },
  
    asFeature: function (geoJSON) {
      if (geoJSON.type === 'Feature') {
        return geoJSON;
      }
  
      return {
        type: 'Feature',
        properties: {},
        geometry: geoJSON
      };
    }
  });
  
  var PointToGeoJSON = {
    toGeoJSON: function () {
      return L.GeoJSON.getFeature(this, {
        type: 'Point',
        coordinates: L.GeoJSON.latLngToCoords(this.getLatLng())
      });
    }
  };
  
  L.Marker.include(PointToGeoJSON);
  L.Circle.include(PointToGeoJSON);
  L.CircleMarker.include(PointToGeoJSON);
  
  L.Polyline.include({
    toGeoJSON: function () {
      return L.GeoJSON.getFeature(this, {
        type: 'LineString',
        coordinates: L.GeoJSON.latLngsToCoords(this.getLatLngs())
      });
    }
  });
  
  L.Polygon.include({
    toGeoJSON: function () {
      var coords = [L.GeoJSON.latLngsToCoords(this.getLatLngs())],
          i, len, hole;
  
      coords[0].push(coords[0][0]);
  
      if (this._holes) {
        for (i = 0, len = this._holes.length; i < len; i++) {
          hole = L.GeoJSON.latLngsToCoords(this._holes[i]);
          hole.push(hole[0]);
          coords.push(hole);
        }
      }
  
      return L.GeoJSON.getFeature(this, {
        type: 'Polygon',
        coordinates: coords
      });
    }
  });
  
  (function () {
    function multiToGeoJSON(type) {
      return function () {
        var coords = [];
  
        this.eachLayer(function (layer) {
          coords.push(layer.toGeoJSON().geometry.coordinates);
        });
  
        return L.GeoJSON.getFeature(this, {
          type: type,
          coordinates: coords
        });
      };
    }
  
    L.MultiPolyline.include({toGeoJSON: multiToGeoJSON('MultiLineString')});
    L.MultiPolygon.include({toGeoJSON: multiToGeoJSON('MultiPolygon')});
  
    L.LayerGroup.include({
      toGeoJSON: function () {
  
        var geometry = this.feature && this.feature.geometry,
          jsons = [],
          json;
  
        if (geometry && geometry.type === 'MultiPoint') {
          return multiToGeoJSON('MultiPoint').call(this);
        }
  
        var isGeometryCollection = geometry && geometry.type === 'GeometryCollection';
  
        this.eachLayer(function (layer) {
          if (layer.toGeoJSON) {
            json = layer.toGeoJSON();
            jsons.push(isGeometryCollection ? json.geometry : L.GeoJSON.asFeature(json));
          }
        });
  
        if (isGeometryCollection) {
          return L.GeoJSON.getFeature(this, {
            geometries: jsons,
            type: 'GeometryCollection'
          });
        }
  
        return {
          type: 'FeatureCollection',
          features: jsons
        };
      }
    });
  }());
  
  L.geoJson = function (geojson, options) {
    return new L.GeoJSON(geojson, options);
  };
  
  
  /*
   * L.DomEvent contains functions for working with DOM events.
   */
  
  L.DomEvent = {
    /* inspired by John Resig, Dean Edwards and YUI addEvent implementations */
    addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object])
  
      var id = L.stamp(fn),
          key = '_leaflet_' + type + id,
          handler, originalHandler, newType;
  
      if (obj[key]) { return this; }
  
      handler = function (e) {
        return fn.call(context || obj, e || L.DomEvent._getEvent());
      };
  
      if (L.Browser.pointer && type.indexOf('touch') === 0) {
        return this.addPointerListener(obj, type, handler, id);
      }
      if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
        this.addDoubleTapListener(obj, handler, id);
      }
  
      if ('addEventListener' in obj) {
  
        if (type === 'mousewheel') {
          obj.addEventListener('DOMMouseScroll', handler, false);
          obj.addEventListener(type, handler, false);
  
        } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
  
          originalHandler = handler;
          newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout');
  
          handler = function (e) {
            if (!L.DomEvent._checkMouse(obj, e)) { return; }
            return originalHandler(e);
          };
  
          obj.addEventListener(newType, handler, false);
  
        } else if (type === 'click' && L.Browser.android) {
          originalHandler = handler;
          handler = function (e) {
            return L.DomEvent._filterClick(e, originalHandler);
          };
  
          obj.addEventListener(type, handler, false);
        } else {
          obj.addEventListener(type, handler, false);
        }
  
      } else if ('attachEvent' in obj) {
        obj.attachEvent('on' + type, handler);
      }
  
      obj[key] = handler;
  
      return this;
    },
  
    removeListener: function (obj, type, fn) {  // (HTMLElement, String, Function)
  
      var id = L.stamp(fn),
          key = '_leaflet_' + type + id,
          handler = obj[key];
  
      if (!handler) { return this; }
  
      if (L.Browser.pointer && type.indexOf('touch') === 0) {
        this.removePointerListener(obj, type, id);
      } else if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
        this.removeDoubleTapListener(obj, id);
  
      } else if ('removeEventListener' in obj) {
  
        if (type === 'mousewheel') {
          obj.removeEventListener('DOMMouseScroll', handler, false);
          obj.removeEventListener(type, handler, false);
  
        } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
          obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
        } else {
          obj.removeEventListener(type, handler, false);
        }
      } else if ('detachEvent' in obj) {
        obj.detachEvent('on' + type, handler);
      }
  
      obj[key] = null;
  
      return this;
    },
  
    stopPropagation: function (e) {
  
      if (e.stopPropagation) {
        e.stopPropagation();
      } else {
        e.cancelBubble = true;
      }
      L.DomEvent._skipped(e);
  
      return this;
    },
  
    disableScrollPropagation: function (el) {
      var stop = L.DomEvent.stopPropagation;
  
      return L.DomEvent
        .on(el, 'mousewheel', stop)
        .on(el, 'MozMousePixelScroll', stop);
    },
  
    disableClickPropagation: function (el) {
      var stop = L.DomEvent.stopPropagation;
  
      for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
        L.DomEvent.on(el, L.Draggable.START[i], stop);
      }
  
      return L.DomEvent
        .on(el, 'click', L.DomEvent._fakeStop)
        .on(el, 'dblclick', stop);
    },
  
    preventDefault: function (e) {
  
      if (e.preventDefault) {
        e.preventDefault();
      } else {
        e.returnValue = false;
      }
      return this;
    },
  
    stop: function (e) {
      return L.DomEvent
        .preventDefault(e)
        .stopPropagation(e);
    },
  
    getMousePosition: function (e, container) {
      if (!container) {
        return new L.Point(e.clientX, e.clientY);
      }
  
      var rect = container.getBoundingClientRect();
  
      return new L.Point(
        e.clientX - rect.left - container.clientLeft,
        e.clientY - rect.top - container.clientTop);
    },
  
    getWheelDelta: function (e) {
  
      var delta = 0;
  
      if (e.wheelDelta) {
        delta = e.wheelDelta / 120;
      }
      if (e.detail) {
        delta = -e.detail / 3;
      }
      return delta;
    },
  
    _skipEvents: {},
  
    _fakeStop: function (e) {
      // fakes stopPropagation by setting a special event flag, checked/reset with L.DomEvent._skipped(e)
      L.DomEvent._skipEvents[e.type] = true;
    },
  
    _skipped: function (e) {
      var skipped = this._skipEvents[e.type];
      // reset when checking, as it's only used in map container and propagates outside of the map
      this._skipEvents[e.type] = false;
      return skipped;
    },
  
    // check if element really left/entered the event target (for mouseenter/mouseleave)
    _checkMouse: function (el, e) {
  
      var related = e.relatedTarget;
  
      if (!related) { return true; }
  
      try {
        while (related && (related !== el)) {
          related = related.parentNode;
        }
      } catch (err) {
        return false;
      }
      return (related !== el);
    },
  
    _getEvent: function () { // evil magic for IE
      /*jshint noarg:false */
      var e = window.event;
      if (!e) {
        var caller = arguments.callee.caller;
        while (caller) {
          e = caller['arguments'][0];
          if (e && window.Event === e.constructor) {
            break;
          }
          caller = caller.caller;
        }
      }
      return e;
    },
  
    // this is a horrible workaround for a bug in Android where a single touch triggers two click events
    _filterClick: function (e, handler) {
      var timeStamp = (e.timeStamp || e.originalEvent.timeStamp),
        elapsed = L.DomEvent._lastClick && (timeStamp - L.DomEvent._lastClick);
  
      // are they closer together than 500ms yet more than 100ms?
      // Android typically triggers them ~300ms apart while multiple listeners
      // on the same event should be triggered far faster;
      // or check if click is simulated on the element, and if it is, reject any non-simulated events
  
      if ((elapsed && elapsed > 100 && elapsed < 500) || (e.target._simulatedClick && !e._simulated)) {
        L.DomEvent.stop(e);
        return;
      }
      L.DomEvent._lastClick = timeStamp;
  
      return handler(e);
    }
  };
  
  L.DomEvent.on = L.DomEvent.addListener;
  L.DomEvent.off = L.DomEvent.removeListener;
  
  
  /*
   * L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too.
   */
  
  L.Draggable = L.Class.extend({
    includes: L.Mixin.Events,
  
    statics: {
      START: L.Browser.touch ? ['touchstart', 'mousedown'] : ['mousedown'],
      END: {
        mousedown: 'mouseup',
        touchstart: 'touchend',
        pointerdown: 'touchend',
        MSPointerDown: 'touchend'
      },
      MOVE: {
        mousedown: 'mousemove',
        touchstart: 'touchmove',
        pointerdown: 'touchmove',
        MSPointerDown: 'touchmove'
      }
    },
  
    initialize: function (element, dragStartTarget) {
      this._element = element;
      this._dragStartTarget = dragStartTarget || element;
    },
  
    enable: function () {
      if (this._enabled) { return; }
  
      for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
        L.DomEvent.on(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
      }
  
      this._enabled = true;
    },
  
    disable: function () {
      if (!this._enabled) { return; }
  
      for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
        L.DomEvent.off(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
      }
  
      this._enabled = false;
      this._moved = false;
    },
  
    _onDown: function (e) {
      this._moved = false;
  
      if (e.shiftKey || ((e.which !== 1) && (e.button !== 1) && !e.touches)) { return; }
  
      L.DomEvent.stopPropagation(e);
  
      if (L.Draggable._disabled) { return; }
  
      L.DomUtil.disableImageDrag();
      L.DomUtil.disableTextSelection();
  
      if (this._moving) { return; }
  
      var first = e.touches ? e.touches[0] : e;
  
      this._startPoint = new L.Point(first.clientX, first.clientY);
      this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
  
      L.DomEvent
          .on(document, L.Draggable.MOVE[e.type], this._onMove, this)
          .on(document, L.Draggable.END[e.type], this._onUp, this);
    },
  
    _onMove: function (e) {
      if (e.touches && e.touches.length > 1) {
        this._moved = true;
        return;
      }
  
      var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
          newPoint = new L.Point(first.clientX, first.clientY),
          offset = newPoint.subtract(this._startPoint);
  
      if (!offset.x && !offset.y) { return; }
      if (L.Browser.touch && Math.abs(offset.x) + Math.abs(offset.y) < 3) { return; }
  
      L.DomEvent.preventDefault(e);
  
      if (!this._moved) {
        this.fire('dragstart');
  
        this._moved = true;
        this._startPos = L.DomUtil.getPosition(this._element).subtract(offset);
  
        L.DomUtil.addClass(document.body, 'leaflet-dragging');
        this._lastTarget = e.target || e.srcElement;
        L.DomUtil.addClass(this._lastTarget, 'leaflet-drag-target');
      }
  
      this._newPos = this._startPos.add(offset);
      this._moving = true;
  
      L.Util.cancelAnimFrame(this._animRequest);
      this._animRequest = L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget);
    },
  
    _updatePosition: function () {
      this.fire('predrag');
      L.DomUtil.setPosition(this._element, this._newPos);
      this.fire('drag');
    },
  
    _onUp: function () {
      L.DomUtil.removeClass(document.body, 'leaflet-dragging');
  
      if (this._lastTarget) {
        L.DomUtil.removeClass(this._lastTarget, 'leaflet-drag-target');
        this._lastTarget = null;
      }
  
      for (var i in L.Draggable.MOVE) {
        L.DomEvent
            .off(document, L.Draggable.MOVE[i], this._onMove)
            .off(document, L.Draggable.END[i], this._onUp);
      }
  
      L.DomUtil.enableImageDrag();
      L.DomUtil.enableTextSelection();
  
      if (this._moved && this._moving) {
        // ensure drag is not fired after dragend
        L.Util.cancelAnimFrame(this._animRequest);
  
        this.fire('dragend', {
          distance: this._newPos.distanceTo(this._startPos)
        });
      }
  
      this._moving = false;
    }
  });
  
  
  /*
    L.Handler is a base class for handler classes that are used internally to inject
    interaction features like dragging to classes like Map and Marker.
  */
  
  L.Handler = L.Class.extend({
    initialize: function (map) {
      this._map = map;
    },
  
    enable: function () {
      if (this._enabled) { return; }
  
      this._enabled = true;
      this.addHooks();
    },
  
    disable: function () {
      if (!this._enabled) { return; }
  
      this._enabled = false;
      this.removeHooks();
    },
  
    enabled: function () {
      return !!this._enabled;
    }
  });
  
  
  /*
   * L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default.
   */
  
  L.Map.mergeOptions({
    dragging: true,
  
    inertia: !L.Browser.android23,
    inertiaDeceleration: 3400, // px/s^2
    inertiaMaxSpeed: Infinity, // px/s
    inertiaThreshold: L.Browser.touch ? 32 : 18, // ms
    easeLinearity: 0.25,
  
    // TODO refactor, move to CRS
    worldCopyJump: false
  });
  
  L.Map.Drag = L.Handler.extend({
    addHooks: function () {
      if (!this._draggable) {
        var map = this._map;
  
        this._draggable = new L.Draggable(map._mapPane, map._container);
  
        this._draggable.on({
          'dragstart': this._onDragStart,
          'drag': this._onDrag,
          'dragend': this._onDragEnd
        }, this);
  
        if (map.options.worldCopyJump) {
          this._draggable.on('predrag', this._onPreDrag, this);
          map.on('viewreset', this._onViewReset, this);
  
          map.whenReady(this._onViewReset, this);
        }
      }
      this._draggable.enable();
    },
  
    removeHooks: function () {
      this._draggable.disable();
    },
  
    moved: function () {
      return this._draggable && this._draggable._moved;
    },
  
    _onDragStart: function () {
      var map = this._map;
  
      if (map._panAnim) {
        map._panAnim.stop();
      }
  
      map
          .fire('movestart')
          .fire('dragstart');
  
      if (map.options.inertia) {
        this._positions = [];
        this._times = [];
      }
    },
  
    _onDrag: function () {
      if (this._map.options.inertia) {
        var time = this._lastTime = +new Date(),
            pos = this._lastPos = this._draggable._newPos;
  
        this._positions.push(pos);
        this._times.push(time);
  
        if (time - this._times[0] > 200) {
          this._positions.shift();
          this._times.shift();
        }
      }
  
      this._map
          .fire('move')
          .fire('drag');
    },
  
    _onViewReset: function () {
      // TODO fix hardcoded Earth values
      var pxCenter = this._map.getSize()._divideBy(2),
          pxWorldCenter = this._map.latLngToLayerPoint([0, 0]);
  
      this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
      this._worldWidth = this._map.project([0, 180]).x;
    },
  
    _onPreDrag: function () {
      // TODO refactor to be able to adjust map pane position after zoom
      var worldWidth = this._worldWidth,
          halfWidth = Math.round(worldWidth / 2),
          dx = this._initialWorldOffset,
          x = this._draggable._newPos.x,
          newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
          newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
          newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
  
      this._draggable._newPos.x = newX;
    },
  
    _onDragEnd: function (e) {
      var map = this._map,
          options = map.options,
          delay = +new Date() - this._lastTime,
  
          noInertia = !options.inertia || delay > options.inertiaThreshold || !this._positions[0];
  
      map.fire('dragend', e);
  
      if (noInertia) {
        map.fire('moveend');
  
      } else {
  
        var direction = this._lastPos.subtract(this._positions[0]),
            duration = (this._lastTime + delay - this._times[0]) / 1000,
            ease = options.easeLinearity,
  
            speedVector = direction.multiplyBy(ease / duration),
            speed = speedVector.distanceTo([0, 0]),
  
            limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
            limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
  
            decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease),
            offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
  
        if (!offset.x || !offset.y) {
          map.fire('moveend');
  
        } else {
          offset = map._limitOffset(offset, map.options.maxBounds);
  
          L.Util.requestAnimFrame(function () {
            map.panBy(offset, {
              duration: decelerationDuration,
              easeLinearity: ease,
              noMoveStart: true
            });
          });
        }
      }
    }
  });
  
  L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag);
  
  
  /*
   * L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
   */
  
  L.Map.mergeOptions({
    doubleClickZoom: true
  });
  
  L.Map.DoubleClickZoom = L.Handler.extend({
    addHooks: function () {
      this._map.on('dblclick', this._onDoubleClick, this);
    },
  
    removeHooks: function () {
      this._map.off('dblclick', this._onDoubleClick, this);
    },
  
    _onDoubleClick: function (e) {
      var map = this._map,
          zoom = map.getZoom() + (e.originalEvent.shiftKey ? -1 : 1);
  
      if (map.options.doubleClickZoom === 'center') {
        map.setZoom(zoom);
      } else {
        map.setZoomAround(e.containerPoint, zoom);
      }
    }
  });
  
  L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom);
  
  
  /*
   * L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map.
   */
  
  L.Map.mergeOptions({
    scrollWheelZoom: true
  });
  
  L.Map.ScrollWheelZoom = L.Handler.extend({
    addHooks: function () {
      L.DomEvent.on(this._map._container, 'mousewheel', this._onWheelScroll, this);
      L.DomEvent.on(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
      this._delta = 0;
    },
  
    removeHooks: function () {
      L.DomEvent.off(this._map._container, 'mousewheel', this._onWheelScroll);
      L.DomEvent.off(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
    },
  
    _onWheelScroll: function (e) {
      var delta = L.DomEvent.getWheelDelta(e);
  
      this._delta += delta;
      this._lastMousePos = this._map.mouseEventToContainerPoint(e);
  
      if (!this._startTime) {
        this._startTime = +new Date();
      }
  
      var left = Math.max(40 - (+new Date() - this._startTime), 0);
  
      clearTimeout(this._timer);
      this._timer = setTimeout(L.bind(this._performZoom, this), left);
  
      L.DomEvent.preventDefault(e);
      L.DomEvent.stopPropagation(e);
    },
  
    _performZoom: function () {
      var map = this._map,
          delta = this._delta,
          zoom = map.getZoom();
  
      delta = delta > 0 ? Math.ceil(delta) : Math.floor(delta);
      delta = Math.max(Math.min(delta, 4), -4);
      delta = map._limitZoom(zoom + delta) - zoom;
  
      this._delta = 0;
      this._startTime = null;
  
      if (!delta) { return; }
  
      if (map.options.scrollWheelZoom === 'center') {
        map.setZoom(zoom + delta);
      } else {
        map.setZoomAround(this._lastMousePos, zoom + delta);
      }
    }
  });
  
  L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom);
  
  
  /*
   * Extends the event handling code with double tap support for mobile browsers.
   */
  
  L.extend(L.DomEvent, {
  
    _touchstart: L.Browser.msPointer ? 'MSPointerDown' : L.Browser.pointer ? 'pointerdown' : 'touchstart',
    _touchend: L.Browser.msPointer ? 'MSPointerUp' : L.Browser.pointer ? 'pointerup' : 'touchend',
  
    // inspired by Zepto touch code by Thomas Fuchs
    addDoubleTapListener: function (obj, handler, id) {
      var last,
          doubleTap = false,
          delay = 250,
          touch,
          pre = '_leaflet_',
          touchstart = this._touchstart,
          touchend = this._touchend,
          trackedTouches = [];
  
      function onTouchStart(e) {
        var count;
  
        if (L.Browser.pointer) {
          trackedTouches.push(e.pointerId);
          count = trackedTouches.length;
        } else {
          count = e.touches.length;
        }
        if (count > 1) {
          return;
        }
  
        var now = Date.now(),
          delta = now - (last || now);
  
        touch = e.touches ? e.touches[0] : e;
        doubleTap = (delta > 0 && delta <= delay);
        last = now;
      }
  
      function onTouchEnd(e) {
        if (L.Browser.pointer) {
          var idx = trackedTouches.indexOf(e.pointerId);
          if (idx === -1) {
            return;
          }
          trackedTouches.splice(idx, 1);
        }
  
        if (doubleTap) {
          if (L.Browser.pointer) {
            // work around .type being readonly with MSPointer* events
            var newTouch = { },
              prop;
  
            // jshint forin:false
            for (var i in touch) {
              prop = touch[i];
              if (typeof prop === 'function') {
                newTouch[i] = prop.bind(touch);
              } else {
                newTouch[i] = prop;
              }
            }
            touch = newTouch;
          }
          touch.type = 'dblclick';
          handler(touch);
          last = null;
        }
      }
      obj[pre + touchstart + id] = onTouchStart;
      obj[pre + touchend + id] = onTouchEnd;
  
      // on pointer we need to listen on the document, otherwise a drag starting on the map and moving off screen
      // will not come through to us, so we will lose track of how many touches are ongoing
      var endElement = L.Browser.pointer ? document.documentElement : obj;
  
      obj.addEventListener(touchstart, onTouchStart, false);
      endElement.addEventListener(touchend, onTouchEnd, false);
  
      if (L.Browser.pointer) {
        endElement.addEventListener(L.DomEvent.POINTER_CANCEL, onTouchEnd, false);
      }
  
      return this;
    },
  
    removeDoubleTapListener: function (obj, id) {
      var pre = '_leaflet_';
  
      obj.removeEventListener(this._touchstart, obj[pre + this._touchstart + id], false);
      (L.Browser.pointer ? document.documentElement : obj).removeEventListener(
              this._touchend, obj[pre + this._touchend + id], false);
  
      if (L.Browser.pointer) {
        document.documentElement.removeEventListener(L.DomEvent.POINTER_CANCEL, obj[pre + this._touchend + id],
          false);
      }
  
      return this;
    }
  });
  
  
  /*
   * Extends L.DomEvent to provide touch support for Internet Explorer and Windows-based devices.
   */
  
  L.extend(L.DomEvent, {
  
    //static
    POINTER_DOWN: L.Browser.msPointer ? 'MSPointerDown' : 'pointerdown',
    POINTER_MOVE: L.Browser.msPointer ? 'MSPointerMove' : 'pointermove',
    POINTER_UP: L.Browser.msPointer ? 'MSPointerUp' : 'pointerup',
    POINTER_CANCEL: L.Browser.msPointer ? 'MSPointerCancel' : 'pointercancel',
  
    _pointers: [],
    _pointerDocumentListener: false,
  
    // Provides a touch events wrapper for (ms)pointer events.
    // Based on changes by veproza https://github.com/CloudMade/Leaflet/pull/1019
    //ref http://www.w3.org/TR/pointerevents/ https://www.w3.org/Bugs/Public/show_bug.cgi?id=22890
  
    addPointerListener: function (obj, type, handler, id) {
  
      switch (type) {
      case 'touchstart':
        return this.addPointerListenerStart(obj, type, handler, id);
      case 'touchend':
        return this.addPointerListenerEnd(obj, type, handler, id);
      case 'touchmove':
        return this.addPointerListenerMove(obj, type, handler, id);
      default:
        throw 'Unknown touch event type';
      }
    },
  
    addPointerListenerStart: function (obj, type, handler, id) {
      var pre = '_leaflet_',
          pointers = this._pointers;
  
      var cb = function (e) {
  
        L.DomEvent.preventDefault(e);
  
        var alreadyInArray = false;
        for (var i = 0; i < pointers.length; i++) {
          if (pointers[i].pointerId === e.pointerId) {
            alreadyInArray = true;
            break;
          }
        }
        if (!alreadyInArray) {
          pointers.push(e);
        }
  
        e.touches = pointers.slice();
        e.changedTouches = [e];
  
        handler(e);
      };
  
      obj[pre + 'touchstart' + id] = cb;
      obj.addEventListener(this.POINTER_DOWN, cb, false);
  
      // need to also listen for end events to keep the _pointers list accurate
      // this needs to be on the body and never go away
      if (!this._pointerDocumentListener) {
        var internalCb = function (e) {
          for (var i = 0; i < pointers.length; i++) {
            if (pointers[i].pointerId === e.pointerId) {
              pointers.splice(i, 1);
              break;
            }
          }
        };
        //We listen on the documentElement as any drags that end by moving the touch off the screen get fired there
        document.documentElement.addEventListener(this.POINTER_UP, internalCb, false);
        document.documentElement.addEventListener(this.POINTER_CANCEL, internalCb, false);
  
        this._pointerDocumentListener = true;
      }
  
      return this;
    },
  
    addPointerListenerMove: function (obj, type, handler, id) {
      var pre = '_leaflet_',
          touches = this._pointers;
  
      function cb(e) {
  
        // don't fire touch moves when mouse isn't down
        if ((e.pointerType === e.MSPOINTER_TYPE_MOUSE || e.pointerType === 'mouse') && e.buttons === 0) { return; }
  
        for (var i = 0; i < touches.length; i++) {
          if (touches[i].pointerId === e.pointerId) {
            touches[i] = e;
            break;
          }
        }
  
        e.touches = touches.slice();
        e.changedTouches = [e];
  
        handler(e);
      }
  
      obj[pre + 'touchmove' + id] = cb;
      obj.addEventListener(this.POINTER_MOVE, cb, false);
  
      return this;
    },
  
    addPointerListenerEnd: function (obj, type, handler, id) {
      var pre = '_leaflet_',
          touches = this._pointers;
  
      var cb = function (e) {
        for (var i = 0; i < touches.length; i++) {
          if (touches[i].pointerId === e.pointerId) {
            touches.splice(i, 1);
            break;
          }
        }
  
        e.touches = touches.slice();
        e.changedTouches = [e];
  
        handler(e);
      };
  
      obj[pre + 'touchend' + id] = cb;
      obj.addEventListener(this.POINTER_UP, cb, false);
      obj.addEventListener(this.POINTER_CANCEL, cb, false);
  
      return this;
    },
  
    removePointerListener: function (obj, type, id) {
      var pre = '_leaflet_',
          cb = obj[pre + type + id];
  
      switch (type) {
      case 'touchstart':
        obj.removeEventListener(this.POINTER_DOWN, cb, false);
        break;
      case 'touchmove':
        obj.removeEventListener(this.POINTER_MOVE, cb, false);
        break;
      case 'touchend':
        obj.removeEventListener(this.POINTER_UP, cb, false);
        obj.removeEventListener(this.POINTER_CANCEL, cb, false);
        break;
      }
  
      return this;
    }
  });
  
  
  /*
   * L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers.
   */
  
  L.Map.mergeOptions({
    touchZoom: L.Browser.touch && !L.Browser.android23,
    bounceAtZoomLimits: true
  });
  
  L.Map.TouchZoom = L.Handler.extend({
    addHooks: function () {
      L.DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this);
    },
  
    removeHooks: function () {
      L.DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this);
    },
  
    _onTouchStart: function (e) {
      var map = this._map;
  
      if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; }
  
      var p1 = map.mouseEventToLayerPoint(e.touches[0]),
          p2 = map.mouseEventToLayerPoint(e.touches[1]),
          viewCenter = map._getCenterLayerPoint();
  
      this._startCenter = p1.add(p2)._divideBy(2);
      this._startDist = p1.distanceTo(p2);
  
      this._moved = false;
      this._zooming = true;
  
      this._centerOffset = viewCenter.subtract(this._startCenter);
  
      if (map._panAnim) {
        map._panAnim.stop();
      }
  
      L.DomEvent
          .on(document, 'touchmove', this._onTouchMove, this)
          .on(document, 'touchend', this._onTouchEnd, this);
  
      L.DomEvent.preventDefault(e);
    },
  
    _onTouchMove: function (e) {
      var map = this._map;
  
      if (!e.touches || e.touches.length !== 2 || !this._zooming) { return; }
  
      var p1 = map.mouseEventToLayerPoint(e.touches[0]),
          p2 = map.mouseEventToLayerPoint(e.touches[1]);
  
      this._scale = p1.distanceTo(p2) / this._startDist;
      this._delta = p1._add(p2)._divideBy(2)._subtract(this._startCenter);
  
      if (this._scale === 1) { return; }
  
      if (!map.options.bounceAtZoomLimits) {
        if ((map.getZoom() === map.getMinZoom() && this._scale < 1) ||
            (map.getZoom() === map.getMaxZoom() && this._scale > 1)) { return; }
      }
  
      if (!this._moved) {
        L.DomUtil.addClass(map._mapPane, 'leaflet-touching');
  
        map
            .fire('movestart')
            .fire('zoomstart');
  
        this._moved = true;
      }
  
      L.Util.cancelAnimFrame(this._animRequest);
      this._animRequest = L.Util.requestAnimFrame(
              this._updateOnMove, this, true, this._map._container);
  
      L.DomEvent.preventDefault(e);
    },
  
    _updateOnMove: function () {
      var map = this._map,
          origin = this._getScaleOrigin(),
          center = map.layerPointToLatLng(origin),
          zoom = map.getScaleZoom(this._scale);
  
      map._animateZoom(center, zoom, this._startCenter, this._scale, this._delta, false, true);
    },
  
    _onTouchEnd: function () {
      if (!this._moved || !this._zooming) {
        this._zooming = false;
        return;
      }
  
      var map = this._map;
  
      this._zooming = false;
      L.DomUtil.removeClass(map._mapPane, 'leaflet-touching');
      L.Util.cancelAnimFrame(this._animRequest);
  
      L.DomEvent
          .off(document, 'touchmove', this._onTouchMove)
          .off(document, 'touchend', this._onTouchEnd);
  
      var origin = this._getScaleOrigin(),
          center = map.layerPointToLatLng(origin),
  
          oldZoom = map.getZoom(),
          floatZoomDelta = map.getScaleZoom(this._scale) - oldZoom,
          roundZoomDelta = (floatZoomDelta > 0 ?
                  Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)),
  
          zoom = map._limitZoom(oldZoom + roundZoomDelta),
          scale = map.getZoomScale(zoom) / this._scale;
  
      map._animateZoom(center, zoom, origin, scale);
    },
  
    _getScaleOrigin: function () {
      var centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale);
      return this._startCenter.add(centerOffset);
    }
  });
  
  L.Map.addInitHook('addHandler', 'touchZoom', L.Map.TouchZoom);
  
  
  /*
   * L.Map.Tap is used to enable mobile hacks like quick taps and long hold.
   */
  
  L.Map.mergeOptions({
    tap: true,
    tapTolerance: 15
  });
  
  L.Map.Tap = L.Handler.extend({
    addHooks: function () {
      L.DomEvent.on(this._map._container, 'touchstart', this._onDown, this);
    },
  
    removeHooks: function () {
      L.DomEvent.off(this._map._container, 'touchstart', this._onDown, this);
    },
  
    _onDown: function (e) {
      if (!e.touches) { return; }
  
      L.DomEvent.preventDefault(e);
  
      this._fireClick = true;
  
      // don't simulate click or track longpress if more than 1 touch
      if (e.touches.length > 1) {
        this._fireClick = false;
        clearTimeout(this._holdTimeout);
        return;
      }
  
      var first = e.touches[0],
          el = first.target;
  
      this._startPos = this._newPos = new L.Point(first.clientX, first.clientY);
  
      // if touching a link, highlight it
      if (el.tagName && el.tagName.toLowerCase() === 'a') {
        L.DomUtil.addClass(el, 'leaflet-active');
      }
  
      // simulate long hold but setting a timeout
      this._holdTimeout = setTimeout(L.bind(function () {
        if (this._isTapValid()) {
          this._fireClick = false;
          this._onUp();
          this._simulateEvent('contextmenu', first);
        }
      }, this), 1000);
  
      L.DomEvent
        .on(document, 'touchmove', this._onMove, this)
        .on(document, 'touchend', this._onUp, this);
    },
  
    _onUp: function (e) {
      clearTimeout(this._holdTimeout);
  
      L.DomEvent
        .off(document, 'touchmove', this._onMove, this)
        .off(document, 'touchend', this._onUp, this);
  
      if (this._fireClick && e && e.changedTouches) {
  
        var first = e.changedTouches[0],
            el = first.target;
  
        if (el && el.tagName && el.tagName.toLowerCase() === 'a') {
          L.DomUtil.removeClass(el, 'leaflet-active');
        }
  
        // simulate click if the touch didn't move too much
        if (this._isTapValid()) {
          this._simulateEvent('click', first);
        }
      }
    },
  
    _isTapValid: function () {
      return this._newPos.distanceTo(this._startPos) <= this._map.options.tapTolerance;
    },
  
    _onMove: function (e) {
      var first = e.touches[0];
      this._newPos = new L.Point(first.clientX, first.clientY);
    },
  
    _simulateEvent: function (type, e) {
      var simulatedEvent = document.createEvent('MouseEvents');
  
      simulatedEvent._simulated = true;
      e.target._simulatedClick = true;
  
      simulatedEvent.initMouseEvent(
              type, true, true, window, 1,
              e.screenX, e.screenY,
              e.clientX, e.clientY,
              false, false, false, false, 0, null);
  
      e.target.dispatchEvent(simulatedEvent);
    }
  });
  
  if (L.Browser.touch && !L.Browser.pointer) {
    L.Map.addInitHook('addHandler', 'tap', L.Map.Tap);
  }
  
  
  /*
   * L.Handler.ShiftDragZoom is used to add shift-drag zoom interaction to the map
    * (zoom to a selected bounding box), enabled by default.
   */
  
  L.Map.mergeOptions({
    boxZoom: true
  });
  
  L.Map.BoxZoom = L.Handler.extend({
    initialize: function (map) {
      this._map = map;
      this._container = map._container;
      this._pane = map._panes.overlayPane;
      this._moved = false;
    },
  
    addHooks: function () {
      L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
    },
  
    removeHooks: function () {
      L.DomEvent.off(this._container, 'mousedown', this._onMouseDown);
      this._moved = false;
    },
  
    moved: function () {
      return this._moved;
    },
  
    _onMouseDown: function (e) {
      this._moved = false;
  
      if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
  
      L.DomUtil.disableTextSelection();
      L.DomUtil.disableImageDrag();
  
      this._startLayerPoint = this._map.mouseEventToLayerPoint(e);
  
      L.DomEvent
          .on(document, 'mousemove', this._onMouseMove, this)
          .on(document, 'mouseup', this._onMouseUp, this)
          .on(document, 'keydown', this._onKeyDown, this);
    },
  
    _onMouseMove: function (e) {
      if (!this._moved) {
        this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane);
        L.DomUtil.setPosition(this._box, this._startLayerPoint);
  
        //TODO refactor: move cursor to styles
        this._container.style.cursor = 'crosshair';
        this._map.fire('boxzoomstart');
      }
  
      var startPoint = this._startLayerPoint,
          box = this._box,
  
          layerPoint = this._map.mouseEventToLayerPoint(e),
          offset = layerPoint.subtract(startPoint),
  
          newPos = new L.Point(
              Math.min(layerPoint.x, startPoint.x),
              Math.min(layerPoint.y, startPoint.y));
  
      L.DomUtil.setPosition(box, newPos);
  
      this._moved = true;
  
      // TODO refactor: remove hardcoded 4 pixels
      box.style.width  = (Math.max(0, Math.abs(offset.x) - 4)) + 'px';
      box.style.height = (Math.max(0, Math.abs(offset.y) - 4)) + 'px';
    },
  
    _finish: function () {
      if (this._moved) {
        this._pane.removeChild(this._box);
        this._container.style.cursor = '';
      }
  
      L.DomUtil.enableTextSelection();
      L.DomUtil.enableImageDrag();
  
      L.DomEvent
          .off(document, 'mousemove', this._onMouseMove)
          .off(document, 'mouseup', this._onMouseUp)
          .off(document, 'keydown', this._onKeyDown);
    },
  
    _onMouseUp: function (e) {
  
      this._finish();
  
      var map = this._map,
          layerPoint = map.mouseEventToLayerPoint(e);
  
      if (this._startLayerPoint.equals(layerPoint)) { return; }
  
      var bounds = new L.LatLngBounds(
              map.layerPointToLatLng(this._startLayerPoint),
              map.layerPointToLatLng(layerPoint));
  
      map.fitBounds(bounds);
  
      map.fire('boxzoomend', {
        boxZoomBounds: bounds
      });
    },
  
    _onKeyDown: function (e) {
      if (e.keyCode === 27) {
        this._finish();
      }
    }
  });
  
  L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom);
  
  
  /*
   * L.Map.Keyboard is handling keyboard interaction with the map, enabled by default.
   */
  
  L.Map.mergeOptions({
    keyboard: true,
    keyboardPanOffset: 80,
    keyboardZoomOffset: 1
  });
  
  L.Map.Keyboard = L.Handler.extend({
  
    keyCodes: {
      left:    [37],
      right:   [39],
      down:    [40],
      up:      [38],
      zoomIn:  [187, 107, 61, 171],
      zoomOut: [189, 109, 173]
    },
  
    initialize: function (map) {
      this._map = map;
  
      this._setPanOffset(map.options.keyboardPanOffset);
      this._setZoomOffset(map.options.keyboardZoomOffset);
    },
  
    addHooks: function () {
      var container = this._map._container;
  
      // make the container focusable by tabbing
      if (container.tabIndex === -1) {
        container.tabIndex = '0';
      }
  
      L.DomEvent
          .on(container, 'focus', this._onFocus, this)
          .on(container, 'blur', this._onBlur, this)
          .on(container, 'mousedown', this._onMouseDown, this);
  
      this._map
          .on('focus', this._addHooks, this)
          .on('blur', this._removeHooks, this);
    },
  
    removeHooks: function () {
      this._removeHooks();
  
      var container = this._map._container;
  
      L.DomEvent
          .off(container, 'focus', this._onFocus, this)
          .off(container, 'blur', this._onBlur, this)
          .off(container, 'mousedown', this._onMouseDown, this);
  
      this._map
          .off('focus', this._addHooks, this)
          .off('blur', this._removeHooks, this);
    },
  
    _onMouseDown: function () {
      if (this._focused) { return; }
  
      var body = document.body,
          docEl = document.documentElement,
          top = body.scrollTop || docEl.scrollTop,
          left = body.scrollLeft || docEl.scrollLeft;
  
      this._map._container.focus();
  
      window.scrollTo(left, top);
    },
  
    _onFocus: function () {
      this._focused = true;
      this._map.fire('focus');
    },
  
    _onBlur: function () {
      this._focused = false;
      this._map.fire('blur');
    },
  
    _setPanOffset: function (pan) {
      var keys = this._panKeys = {},
          codes = this.keyCodes,
          i, len;
  
      for (i = 0, len = codes.left.length; i < len; i++) {
        keys[codes.left[i]] = [-1 * pan, 0];
      }
      for (i = 0, len = codes.right.length; i < len; i++) {
        keys[codes.right[i]] = [pan, 0];
      }
      for (i = 0, len = codes.down.length; i < len; i++) {
        keys[codes.down[i]] = [0, pan];
      }
      for (i = 0, len = codes.up.length; i < len; i++) {
        keys[codes.up[i]] = [0, -1 * pan];
      }
    },
  
    _setZoomOffset: function (zoom) {
      var keys = this._zoomKeys = {},
          codes = this.keyCodes,
          i, len;
  
      for (i = 0, len = codes.zoomIn.length; i < len; i++) {
        keys[codes.zoomIn[i]] = zoom;
      }
      for (i = 0, len = codes.zoomOut.length; i < len; i++) {
        keys[codes.zoomOut[i]] = -zoom;
      }
    },
  
    _addHooks: function () {
      L.DomEvent.on(document, 'keydown', this._onKeyDown, this);
    },
  
    _removeHooks: function () {
      L.DomEvent.off(document, 'keydown', this._onKeyDown, this);
    },
  
    _onKeyDown: function (e) {
      var key = e.keyCode,
          map = this._map;
  
      if (key in this._panKeys) {
  
        if (map._panAnim && map._panAnim._inProgress) { return; }
  
        map.panBy(this._panKeys[key]);
  
        if (map.options.maxBounds) {
          map.panInsideBounds(map.options.maxBounds);
        }
  
      } else if (key in this._zoomKeys) {
        map.setZoom(map.getZoom() + this._zoomKeys[key]);
  
      } else {
        return;
      }
  
      L.DomEvent.stop(e);
    }
  });
  
  L.Map.addInitHook('addHandler', 'keyboard', L.Map.Keyboard);
  
  
  /*
   * L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable.
   */
  
  L.Handler.MarkerDrag = L.Handler.extend({
    initialize: function (marker) {
      this._marker = marker;
    },
  
    addHooks: function () {
      var icon = this._marker._icon;
      if (!this._draggable) {
        this._draggable = new L.Draggable(icon, icon);
      }
  
      this._draggable
        .on('dragstart', this._onDragStart, this)
        .on('drag', this._onDrag, this)
        .on('dragend', this._onDragEnd, this);
      this._draggable.enable();
      L.DomUtil.addClass(this._marker._icon, 'leaflet-marker-draggable');
    },
  
    removeHooks: function () {
      this._draggable
        .off('dragstart', this._onDragStart, this)
        .off('drag', this._onDrag, this)
        .off('dragend', this._onDragEnd, this);
  
      this._draggable.disable();
      L.DomUtil.removeClass(this._marker._icon, 'leaflet-marker-draggable');
    },
  
    moved: function () {
      return this._draggable && this._draggable._moved;
    },
  
    _onDragStart: function () {
      this._marker
          .closePopup()
          .fire('movestart')
          .fire('dragstart');
    },
  
    _onDrag: function () {
      var marker = this._marker,
          shadow = marker._shadow,
          iconPos = L.DomUtil.getPosition(marker._icon),
          latlng = marker._map.layerPointToLatLng(iconPos);
  
      // update shadow position
      if (shadow) {
        L.DomUtil.setPosition(shadow, iconPos);
      }
  
      marker._latlng = latlng;
  
      marker
          .fire('move', {latlng: latlng})
          .fire('drag');
    },
  
    _onDragEnd: function (e) {
      this._marker
          .fire('moveend')
          .fire('dragend', e);
    }
  });
  
  
  /*
   * L.Control is a base class for implementing map controls. Handles positioning.
   * All other controls extend from this class.
   */
  
  L.Control = L.Class.extend({
    options: {
      position: 'topright'
    },
  
    initialize: function (options) {
      L.setOptions(this, options);
    },
  
    getPosition: function () {
      return this.options.position;
    },
  
    setPosition: function (position) {
      var map = this._map;
  
      if (map) {
        map.removeControl(this);
      }
  
      this.options.position = position;
  
      if (map) {
        map.addControl(this);
      }
  
      return this;
    },
  
    getContainer: function () {
      return this._container;
    },
  
    addTo: function (map) {
      this._map = map;
  
      var container = this._container = this.onAdd(map),
          pos = this.getPosition(),
          corner = map._controlCorners[pos];
  
      L.DomUtil.addClass(container, 'leaflet-control');
  
      if (pos.indexOf('bottom') !== -1) {
        corner.insertBefore(container, corner.firstChild);
      } else {
        corner.appendChild(container);
      }
  
      return this;
    },
  
    removeFrom: function (map) {
      var pos = this.getPosition(),
          corner = map._controlCorners[pos];
  
      corner.removeChild(this._container);
      this._map = null;
  
      if (this.onRemove) {
        this.onRemove(map);
      }
  
      return this;
    },
  
    _refocusOnMap: function () {
      if (this._map) {
        this._map.getContainer().focus();
      }
    }
  });
  
  L.control = function (options) {
    return new L.Control(options);
  };
  
  
  // adds control-related methods to L.Map
  
  L.Map.include({
    addControl: function (control) {
      control.addTo(this);
      return this;
    },
  
    removeControl: function (control) {
      control.removeFrom(this);
      return this;
    },
  
    _initControlPos: function () {
      var corners = this._controlCorners = {},
          l = 'leaflet-',
          container = this._controlContainer =
                  L.DomUtil.create('div', l + 'control-container', this._container);
  
      function createCorner(vSide, hSide) {
        var className = l + vSide + ' ' + l + hSide;
  
        corners[vSide + hSide] = L.DomUtil.create('div', className, container);
      }
  
      createCorner('top', 'left');
      createCorner('top', 'right');
      createCorner('bottom', 'left');
      createCorner('bottom', 'right');
    },
  
    _clearControlPos: function () {
      this._container.removeChild(this._controlContainer);
    }
  });
  
  
  /*
   * L.Control.Zoom is used for the default zoom buttons on the map.
   */
  
  L.Control.Zoom = L.Control.extend({
    options: {
      position: 'topleft',
      zoomInText: '+',
      zoomInTitle: 'Zoom in',
      zoomOutText: '-',
      zoomOutTitle: 'Zoom out'
    },
  
    onAdd: function (map) {
      var zoomName = 'leaflet-control-zoom',
          container = L.DomUtil.create('div', zoomName + ' leaflet-bar');
  
      this._map = map;
  
      this._zoomInButton  = this._createButton(
              this.options.zoomInText, this.options.zoomInTitle,
              zoomName + '-in',  container, this._zoomIn,  this);
      this._zoomOutButton = this._createButton(
              this.options.zoomOutText, this.options.zoomOutTitle,
              zoomName + '-out', container, this._zoomOut, this);
  
      this._updateDisabled();
      map.on('zoomend zoomlevelschange', this._updateDisabled, this);
  
      return container;
    },
  
    onRemove: function (map) {
      map.off('zoomend zoomlevelschange', this._updateDisabled, this);
    },
  
    _zoomIn: function (e) {
      this._map.zoomIn(e.shiftKey ? 3 : 1);
    },
  
    _zoomOut: function (e) {
      this._map.zoomOut(e.shiftKey ? 3 : 1);
    },
  
    _createButton: function (html, title, className, container, fn, context) {
      var link = L.DomUtil.create('a', className, container);
      link.innerHTML = html;
      link.href = '#';
      link.title = title;
  
      var stop = L.DomEvent.stopPropagation;
  
      L.DomEvent
          .on(link, 'click', stop)
          .on(link, 'mousedown', stop)
          .on(link, 'dblclick', stop)
          .on(link, 'click', L.DomEvent.preventDefault)
          .on(link, 'click', fn, context)
          .on(link, 'click', this._refocusOnMap, context);
  
      return link;
    },
  
    _updateDisabled: function () {
      var map = this._map,
        className = 'leaflet-disabled';
  
      L.DomUtil.removeClass(this._zoomInButton, className);
      L.DomUtil.removeClass(this._zoomOutButton, className);
  
      if (map._zoom === map.getMinZoom()) {
        L.DomUtil.addClass(this._zoomOutButton, className);
      }
      if (map._zoom === map.getMaxZoom()) {
        L.DomUtil.addClass(this._zoomInButton, className);
      }
    }
  });
  
  L.Map.mergeOptions({
    zoomControl: true
  });
  
  L.Map.addInitHook(function () {
    if (this.options.zoomControl) {
      this.zoomControl = new L.Control.Zoom();
      this.addControl(this.zoomControl);
    }
  });
  
  L.control.zoom = function (options) {
    return new L.Control.Zoom(options);
  };
  
  
  
  /*
   * L.Control.Attribution is used for displaying attribution on the map (added by default).
   */
  
  L.Control.Attribution = L.Control.extend({
    options: {
      position: 'bottomright',
      prefix: '<a href="http://leafletjs.com" title="A JS library for interactive maps">Leaflet</a>'
    },
  
    initialize: function (options) {
      L.setOptions(this, options);
  
      this._attributions = {};
    },
  
    onAdd: function (map) {
      this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
      L.DomEvent.disableClickPropagation(this._container);
  
      for (var i in map._layers) {
        if (map._layers[i].getAttribution) {
          this.addAttribution(map._layers[i].getAttribution());
        }
      }
      
      map
          .on('layeradd', this._onLayerAdd, this)
          .on('layerremove', this._onLayerRemove, this);
  
      this._update();
  
      return this._container;
    },
  
    onRemove: function (map) {
      map
          .off('layeradd', this._onLayerAdd)
          .off('layerremove', this._onLayerRemove);
  
    },
  
    setPrefix: function (prefix) {
      this.options.prefix = prefix;
      this._update();
      return this;
    },
  
    addAttribution: function (text) {
      if (!text) { return; }
  
      if (!this._attributions[text]) {
        this._attributions[text] = 0;
      }
      this._attributions[text]++;
  
      this._update();
  
      return this;
    },
  
    removeAttribution: function (text) {
      if (!text) { return; }
  
      if (this._attributions[text]) {
        this._attributions[text]--;
        this._update();
      }
  
      return this;
    },
  
    _update: function () {
      if (!this._map) { return; }
  
      var attribs = [];
  
      for (var i in this._attributions) {
        if (this._attributions[i]) {
          attribs.push(i);
        }
      }
  
      var prefixAndAttribs = [];
  
      if (this.options.prefix) {
        prefixAndAttribs.push(this.options.prefix);
      }
      if (attribs.length) {
        prefixAndAttribs.push(attribs.join(', '));
      }
  
      this._container.innerHTML = prefixAndAttribs.join(' | ');
    },
  
    _onLayerAdd: function (e) {
      if (e.layer.getAttribution) {
        this.addAttribution(e.layer.getAttribution());
      }
    },
  
    _onLayerRemove: function (e) {
      if (e.layer.getAttribution) {
        this.removeAttribution(e.layer.getAttribution());
      }
    }
  });
  
  L.Map.mergeOptions({
    attributionControl: true
  });
  
  L.Map.addInitHook(function () {
    if (this.options.attributionControl) {
      this.attributionControl = (new L.Control.Attribution()).addTo(this);
    }
  });
  
  L.control.attribution = function (options) {
    return new L.Control.Attribution(options);
  };
  
  
  /*
   * L.Control.Scale is used for displaying metric/imperial scale on the map.
   */
  
  L.Control.Scale = L.Control.extend({
    options: {
      position: 'bottomleft',
      maxWidth: 100,
      metric: true,
      imperial: true,
      updateWhenIdle: false
    },
  
    onAdd: function (map) {
      this._map = map;
  
      var className = 'leaflet-control-scale',
          container = L.DomUtil.create('div', className),
          options = this.options;
  
      this._addScales(options, className, container);
  
      map.on(options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
      map.whenReady(this._update, this);
  
      return container;
    },
  
    onRemove: function (map) {
      map.off(this.options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
    },
  
    _addScales: function (options, className, container) {
      if (options.metric) {
        this._mScale = L.DomUtil.create('div', className + '-line', container);
      }
      if (options.imperial) {
        this._iScale = L.DomUtil.create('div', className + '-line', container);
      }
    },
  
    _update: function () {
      var bounds = this._map.getBounds(),
          centerLat = bounds.getCenter().lat,
          halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180),
          dist = halfWorldMeters * (bounds.getNorthEast().lng - bounds.getSouthWest().lng) / 180,
  
          size = this._map.getSize(),
          options = this.options,
          maxMeters = 0;
  
      if (size.x > 0) {
        maxMeters = dist * (options.maxWidth / size.x);
      }
  
      this._updateScales(options, maxMeters);
    },
  
    _updateScales: function (options, maxMeters) {
      if (options.metric && maxMeters) {
        this._updateMetric(maxMeters);
      }
  
      if (options.imperial && maxMeters) {
        this._updateImperial(maxMeters);
      }
    },
  
    _updateMetric: function (maxMeters) {
      var meters = this._getRoundNum(maxMeters);
  
      this._mScale.style.width = this._getScaleWidth(meters / maxMeters) + 'px';
      this._mScale.innerHTML = meters < 1000 ? meters + ' m' : (meters / 1000) + ' km';
    },
  
    _updateImperial: function (maxMeters) {
      var maxFeet = maxMeters * 3.2808399,
          scale = this._iScale,
          maxMiles, miles, feet;
  
      if (maxFeet > 5280) {
        maxMiles = maxFeet / 5280;
        miles = this._getRoundNum(maxMiles);
  
        scale.style.width = this._getScaleWidth(miles / maxMiles) + 'px';
        scale.innerHTML = miles + ' mi';
  
      } else {
        feet = this._getRoundNum(maxFeet);
  
        scale.style.width = this._getScaleWidth(feet / maxFeet) + 'px';
        scale.innerHTML = feet + ' ft';
      }
    },
  
    _getScaleWidth: function (ratio) {
      return Math.round(this.options.maxWidth * ratio) - 10;
    },
  
    _getRoundNum: function (num) {
      var pow10 = Math.pow(10, (Math.floor(num) + '').length - 1),
          d = num / pow10;
  
      d = d >= 10 ? 10 : d >= 5 ? 5 : d >= 3 ? 3 : d >= 2 ? 2 : 1;
  
      return pow10 * d;
    }
  });
  
  L.control.scale = function (options) {
    return new L.Control.Scale(options);
  };
  
  
  /*
   * L.Control.Layers is a control to allow users to switch between different layers on the map.
   */
  
  L.Control.Layers = L.Control.extend({
    options: {
      collapsed: true,
      position: 'topright',
      autoZIndex: true
    },
  
    initialize: function (baseLayers, overlays, options) {
      L.setOptions(this, options);
  
      this._layers = {};
      this._lastZIndex = 0;
      this._handlingClick = false;
  
      for (var i in baseLayers) {
        this._addLayer(baseLayers[i], i);
      }
  
      for (i in overlays) {
        this._addLayer(overlays[i], i, true);
      }
    },
  
    onAdd: function (map) {
      this._initLayout();
      this._update();
  
      map
          .on('layeradd', this._onLayerChange, this)
          .on('layerremove', this._onLayerChange, this);
  
      return this._container;
    },
  
    onRemove: function (map) {
      map
          .off('layeradd', this._onLayerChange, this)
          .off('layerremove', this._onLayerChange, this);
    },
  
    addBaseLayer: function (layer, name) {
      this._addLayer(layer, name);
      this._update();
      return this;
    },
  
    addOverlay: function (layer, name) {
      this._addLayer(layer, name, true);
      this._update();
      return this;
    },
  
    removeLayer: function (layer) {
      var id = L.stamp(layer);
      delete this._layers[id];
      this._update();
      return this;
    },
  
    _initLayout: function () {
      var className = 'leaflet-control-layers',
          container = this._container = L.DomUtil.create('div', className);
  
      //Makes this work on IE10 Touch devices by stopping it from firing a mouseout event when the touch is released
      container.setAttribute('aria-haspopup', true);
  
      if (!L.Browser.touch) {
        L.DomEvent
          .disableClickPropagation(container)
          .disableScrollPropagation(container);
      } else {
        L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
      }
  
      var form = this._form = L.DomUtil.create('form', className + '-list');
  
      if (this.options.collapsed) {
        if (!L.Browser.android) {
          L.DomEvent
              .on(container, 'mouseover', this._expand, this)
              .on(container, 'mouseout', this._collapse, this);
        }
        var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container);
        link.href = '#';
        link.title = 'Layers';
  
        if (L.Browser.touch) {
          L.DomEvent
              .on(link, 'click', L.DomEvent.stop)
              .on(link, 'click', this._expand, this);
        }
        else {
          L.DomEvent.on(link, 'focus', this._expand, this);
        }
        //Work around for Firefox android issue https://github.com/Leaflet/Leaflet/issues/2033
        L.DomEvent.on(form, 'click', function () {
          setTimeout(L.bind(this._onInputClick, this), 0);
        }, this);
  
        this._map.on('click', this._collapse, this);
        // TODO keyboard accessibility
      } else {
        this._expand();
      }
  
      this._baseLayersList = L.DomUtil.create('div', className + '-base', form);
      this._separator = L.DomUtil.create('div', className + '-separator', form);
      this._overlaysList = L.DomUtil.create('div', className + '-overlays', form);
  
      container.appendChild(form);
    },
  
    _addLayer: function (layer, name, overlay) {
      var id = L.stamp(layer);
  
      this._layers[id] = {
        layer: layer,
        name: name,
        overlay: overlay
      };
  
      if (this.options.autoZIndex && layer.setZIndex) {
        this._lastZIndex++;
        layer.setZIndex(this._lastZIndex);
      }
    },
  
    _update: function () {
      if (!this._container) {
        return;
      }
  
      this._baseLayersList.innerHTML = '';
      this._overlaysList.innerHTML = '';
  
      var baseLayersPresent = false,
          overlaysPresent = false,
          i, obj;
  
      for (i in this._layers) {
        obj = this._layers[i];
        this._addItem(obj);
        overlaysPresent = overlaysPresent || obj.overlay;
        baseLayersPresent = baseLayersPresent || !obj.overlay;
      }
  
      this._separator.style.display = overlaysPresent && baseLayersPresent ? '' : 'none';
    },
  
    _onLayerChange: function (e) {
      var obj = this._layers[L.stamp(e.layer)];
  
      if (!obj) { return; }
  
      if (!this._handlingClick) {
        this._update();
      }
  
      var type = obj.overlay ?
        (e.type === 'layeradd' ? 'overlayadd' : 'overlayremove') :
        (e.type === 'layeradd' ? 'baselayerchange' : null);
  
      if (type) {
        this._map.fire(type, obj);
      }
    },
  
    // IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
    _createRadioElement: function (name, checked) {
  
      var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name + '"';
      if (checked) {
        radioHtml += ' checked="checked"';
      }
      radioHtml += '/>';
  
      var radioFragment = document.createElement('div');
      radioFragment.innerHTML = radioHtml;
  
      return radioFragment.firstChild;
    },
  
    _addItem: function (obj) {
      var label = document.createElement('label'),
          input,
          checked = this._map.hasLayer(obj.layer);
  
      if (obj.overlay) {
        input = document.createElement('input');
        input.type = 'checkbox';
        input.className = 'leaflet-control-layers-selector';
        input.defaultChecked = checked;
      } else {
        input = this._createRadioElement('leaflet-base-layers', checked);
      }
  
      input.layerId = L.stamp(obj.layer);
  
      L.DomEvent.on(input, 'click', this._onInputClick, this);
  
      var name = document.createElement('span');
      name.innerHTML = ' ' + obj.name;
  
      label.appendChild(input);
      label.appendChild(name);
  
      var container = obj.overlay ? this._overlaysList : this._baseLayersList;
      container.appendChild(label);
  
      return label;
    },
  
    _onInputClick: function () {
      var i, input, obj,
          inputs = this._form.getElementsByTagName('input'),
          inputsLen = inputs.length;
  
      this._handlingClick = true;
  
      for (i = 0; i < inputsLen; i++) {
        input = inputs[i];
        obj = this._layers[input.layerId];
  
        if (input.checked && !this._map.hasLayer(obj.layer)) {
          this._map.addLayer(obj.layer);
  
        } else if (!input.checked && this._map.hasLayer(obj.layer)) {
          this._map.removeLayer(obj.layer);
        }
      }
  
      this._handlingClick = false;
  
      this._refocusOnMap();
    },
  
    _expand: function () {
      L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
    },
  
    _collapse: function () {
      this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', '');
    }
  });
  
  L.control.layers = function (baseLayers, overlays, options) {
    return new L.Control.Layers(baseLayers, overlays, options);
  };
  
  
  /*
   * L.PosAnimation is used by Leaflet internally for pan animations.
   */
  
  L.PosAnimation = L.Class.extend({
    includes: L.Mixin.Events,
  
    run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
      this.stop();
  
      this._el = el;
      this._inProgress = true;
      this._newPos = newPos;
  
      this.fire('start');
  
      el.style[L.DomUtil.TRANSITION] = 'all ' + (duration || 0.25) +
              's cubic-bezier(0,0,' + (easeLinearity || 0.5) + ',1)';
  
      L.DomEvent.on(el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
      L.DomUtil.setPosition(el, newPos);
  
      // toggle reflow, Chrome flickers for some reason if you don't do this
      L.Util.falseFn(el.offsetWidth);
  
      // there's no native way to track value updates of transitioned properties, so we imitate this
      this._stepTimer = setInterval(L.bind(this._onStep, this), 50);
    },
  
    stop: function () {
      if (!this._inProgress) { return; }
  
      // if we just removed the transition property, the element would jump to its final position,
      // so we need to make it stay at the current position
  
      L.DomUtil.setPosition(this._el, this._getPos());
      this._onTransitionEnd();
      L.Util.falseFn(this._el.offsetWidth); // force reflow in case we are about to start a new animation
    },
  
    _onStep: function () {
      var stepPos = this._getPos();
      if (!stepPos) {
        this._onTransitionEnd();
        return;
      }
      // jshint camelcase: false
      // make L.DomUtil.getPosition return intermediate position value during animation
      this._el._leaflet_pos = stepPos;
  
      this.fire('step');
    },
  
    // you can't easily get intermediate values of properties animated with CSS3 Transitions,
    // we need to parse computed style (in case of transform it returns matrix string)
  
    _transformRe: /([-+]?(?:\d*\.)?\d+)\D*, ([-+]?(?:\d*\.)?\d+)\D*\)/,
  
    _getPos: function () {
      var left, top, matches,
          el = this._el,
          style = window.getComputedStyle(el);
  
      if (L.Browser.any3d) {
        matches = style[L.DomUtil.TRANSFORM].match(this._transformRe);
        if (!matches) { return; }
        left = parseFloat(matches[1]);
        top  = parseFloat(matches[2]);
      } else {
        left = parseFloat(style.left);
        top  = parseFloat(style.top);
      }
  
      return new L.Point(left, top, true);
    },
  
    _onTransitionEnd: function () {
      L.DomEvent.off(this._el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
  
      if (!this._inProgress) { return; }
      this._inProgress = false;
  
      this._el.style[L.DomUtil.TRANSITION] = '';
  
      // jshint camelcase: false
      // make sure L.DomUtil.getPosition returns the final position value after animation
      this._el._leaflet_pos = this._newPos;
  
      clearInterval(this._stepTimer);
  
      this.fire('step').fire('end');
    }
  
  });
  
  
  /*
   * Extends L.Map to handle panning animations.
   */
  
  L.Map.include({
  
    setView: function (center, zoom, options) {
  
      zoom = zoom === undefined ? this._zoom : this._limitZoom(zoom);
      center = this._limitCenter(L.latLng(center), zoom, this.options.maxBounds);
      options = options || {};
  
      if (this._panAnim) {
        this._panAnim.stop();
      }
  
      if (this._loaded && !options.reset && options !== true) {
  
        if (options.animate !== undefined) {
          options.zoom = L.extend({animate: options.animate}, options.zoom);
          options.pan = L.extend({animate: options.animate}, options.pan);
        }
  
        // try animating pan or zoom
        var animated = (this._zoom !== zoom) ?
          this._tryAnimatedZoom && this._tryAnimatedZoom(center, zoom, options.zoom) :
          this._tryAnimatedPan(center, options.pan);
  
        if (animated) {
          // prevent resize handler call, the view will refresh after animation anyway
          clearTimeout(this._sizeTimer);
          return this;
        }
      }
  
      // animation didn't start, just reset the map view
      this._resetView(center, zoom);
  
      return this;
    },
  
    panBy: function (offset, options) {
      offset = L.point(offset).round();
      options = options || {};
  
      if (!offset.x && !offset.y) {
        return this;
      }
  
      if (!this._panAnim) {
        this._panAnim = new L.PosAnimation();
  
        this._panAnim.on({
          'step': this._onPanTransitionStep,
          'end': this._onPanTransitionEnd
        }, this);
      }
  
      // don't fire movestart if animating inertia
      if (!options.noMoveStart) {
        this.fire('movestart');
      }
  
      // animate pan unless animate: false specified
      if (options.animate !== false) {
        L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
  
        var newPos = this._getMapPanePos().subtract(offset);
        this._panAnim.run(this._mapPane, newPos, options.duration || 0.25, options.easeLinearity);
      } else {
        this._rawPanBy(offset);
        this.fire('move').fire('moveend');
      }
  
      return this;
    },
  
    _onPanTransitionStep: function () {
      this.fire('move');
    },
  
    _onPanTransitionEnd: function () {
      L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
      this.fire('moveend');
    },
  
    _tryAnimatedPan: function (center, options) {
      // difference between the new and current centers in pixels
      var offset = this._getCenterOffset(center)._floor();
  
      // don't animate too far unless animate: true specified in options
      if ((options && options.animate) !== true && !this.getSize().contains(offset)) { return false; }
  
      this.panBy(offset, options);
  
      return true;
    }
  });
  
  
  /*
   * L.PosAnimation fallback implementation that powers Leaflet pan animations
   * in browsers that don't support CSS3 Transitions.
   */
  
  L.PosAnimation = L.DomUtil.TRANSITION ? L.PosAnimation : L.PosAnimation.extend({
  
    run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
      this.stop();
  
      this._el = el;
      this._inProgress = true;
      this._duration = duration || 0.25;
      this._easeOutPower = 1 / Math.max(easeLinearity || 0.5, 0.2);
  
      this._startPos = L.DomUtil.getPosition(el);
      this._offset = newPos.subtract(this._startPos);
      this._startTime = +new Date();
  
      this.fire('start');
  
      this._animate();
    },
  
    stop: function () {
      if (!this._inProgress) { return; }
  
      this._step();
      this._complete();
    },
  
    _animate: function () {
      // animation loop
      this._animId = L.Util.requestAnimFrame(this._animate, this);
      this._step();
    },
  
    _step: function () {
      var elapsed = (+new Date()) - this._startTime,
          duration = this._duration * 1000;
  
      if (elapsed < duration) {
        this._runFrame(this._easeOut(elapsed / duration));
      } else {
        this._runFrame(1);
        this._complete();
      }
    },
  
    _runFrame: function (progress) {
      var pos = this._startPos.add(this._offset.multiplyBy(progress));
      L.DomUtil.setPosition(this._el, pos);
  
      this.fire('step');
    },
  
    _complete: function () {
      L.Util.cancelAnimFrame(this._animId);
  
      this._inProgress = false;
      this.fire('end');
    },
  
    _easeOut: function (t) {
      return 1 - Math.pow(1 - t, this._easeOutPower);
    }
  });
  
  
  /*
   * Extends L.Map to handle zoom animations.
   */
  
  L.Map.mergeOptions({
    zoomAnimation: true,
    zoomAnimationThreshold: 4
  });
  
  if (L.DomUtil.TRANSITION) {
  
    L.Map.addInitHook(function () {
      // don't animate on browsers without hardware-accelerated transitions or old Android/Opera
      this._zoomAnimated = this.options.zoomAnimation && L.DomUtil.TRANSITION &&
          L.Browser.any3d && !L.Browser.android23 && !L.Browser.mobileOpera;
  
      // zoom transitions run with the same duration for all layers, so if one of transitionend events
      // happens after starting zoom animation (propagating to the map pane), we know that it ended globally
      if (this._zoomAnimated) {
        L.DomEvent.on(this._mapPane, L.DomUtil.TRANSITION_END, this._catchTransitionEnd, this);
      }
    });
  }
  
  L.Map.include(!L.DomUtil.TRANSITION ? {} : {
  
    _catchTransitionEnd: function (e) {
      if (this._animatingZoom && e.propertyName.indexOf('transform') >= 0) {
        this._onZoomTransitionEnd();
      }
    },
  
    _nothingToAnimate: function () {
      return !this._container.getElementsByClassName('leaflet-zoom-animated').length;
    },
  
    _tryAnimatedZoom: function (center, zoom, options) {
  
      if (this._animatingZoom) { return true; }
  
      options = options || {};
  
      // don't animate if disabled, not supported or zoom difference is too large
      if (!this._zoomAnimated || options.animate === false || this._nothingToAnimate() ||
              Math.abs(zoom - this._zoom) > this.options.zoomAnimationThreshold) { return false; }
  
      // offset is the pixel coords of the zoom origin relative to the current center
      var scale = this.getZoomScale(zoom),
          offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale),
        origin = this._getCenterLayerPoint()._add(offset);
  
      // don't animate if the zoom origin isn't within one screen from the current center, unless forced
      if (options.animate !== true && !this.getSize().contains(offset)) { return false; }
  
      this
          .fire('movestart')
          .fire('zoomstart');
  
      this._animateZoom(center, zoom, origin, scale, null, true);
  
      return true;
    },
  
    _animateZoom: function (center, zoom, origin, scale, delta, backwards, forTouchZoom) {
  
      if (!forTouchZoom) {
        this._animatingZoom = true;
      }
  
      // put transform transition on all layers with leaflet-zoom-animated class
      L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
  
      // remember what center/zoom to set after animation
      this._animateToCenter = center;
      this._animateToZoom = zoom;
  
      // disable any dragging during animation
      if (L.Draggable) {
        L.Draggable._disabled = true;
      }
  
      L.Util.requestAnimFrame(function () {
        this.fire('zoomanim', {
          center: center,
          zoom: zoom,
          origin: origin,
          scale: scale,
          delta: delta,
          backwards: backwards
        });
      }, this);
    },
  
    _onZoomTransitionEnd: function () {
  
      this._animatingZoom = false;
  
      L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
  
      this._resetView(this._animateToCenter, this._animateToZoom, true, true);
  
      if (L.Draggable) {
        L.Draggable._disabled = false;
      }
    }
  });
  
  
  /*
    Zoom animation logic for L.TileLayer.
  */
  
  L.TileLayer.include({
    _animateZoom: function (e) {
      if (!this._animating) {
        this._animating = true;
        this._prepareBgBuffer();
      }
  
      var bg = this._bgBuffer,
          transform = L.DomUtil.TRANSFORM,
          initialTransform = e.delta ? L.DomUtil.getTranslateString(e.delta) : bg.style[transform],
          scaleStr = L.DomUtil.getScaleString(e.scale, e.origin);
  
      bg.style[transform] = e.backwards ?
          scaleStr + ' ' + initialTransform :
          initialTransform + ' ' + scaleStr;
    },
  
    _endZoomAnim: function () {
      var front = this._tileContainer,
          bg = this._bgBuffer;
  
      front.style.visibility = '';
      front.parentNode.appendChild(front); // Bring to fore
  
      // force reflow
      L.Util.falseFn(bg.offsetWidth);
  
      this._animating = false;
    },
  
    _clearBgBuffer: function () {
      var map = this._map;
  
      if (map && !map._animatingZoom && !map.touchZoom._zooming) {
        this._bgBuffer.innerHTML = '';
        this._bgBuffer.style[L.DomUtil.TRANSFORM] = '';
      }
    },
  
    _prepareBgBuffer: function () {
  
      var front = this._tileContainer,
          bg = this._bgBuffer;
  
      // if foreground layer doesn't have many tiles but bg layer does,
      // keep the existing bg layer and just zoom it some more
  
      var bgLoaded = this._getLoadedTilesPercentage(bg),
          frontLoaded = this._getLoadedTilesPercentage(front);
  
      if (bg && bgLoaded > 0.5 && frontLoaded < 0.5) {
  
        front.style.visibility = 'hidden';
        this._stopLoadingImages(front);
        return;
      }
  
      // prepare the buffer to become the front tile pane
      bg.style.visibility = 'hidden';
      bg.style[L.DomUtil.TRANSFORM] = '';
  
      // switch out the current layer to be the new bg layer (and vice-versa)
      this._tileContainer = bg;
      bg = this._bgBuffer = front;
  
      this._stopLoadingImages(bg);
  
      //prevent bg buffer from clearing right after zoom
      clearTimeout(this._clearBgBufferTimer);
    },
  
    _getLoadedTilesPercentage: function (container) {
      var tiles = container.getElementsByTagName('img'),
          i, len, count = 0;
  
      for (i = 0, len = tiles.length; i < len; i++) {
        if (tiles[i].complete) {
          count++;
        }
      }
      return count / len;
    },
  
    // stops loading all tiles in the background layer
    _stopLoadingImages: function (container) {
      var tiles = Array.prototype.slice.call(container.getElementsByTagName('img')),
          i, len, tile;
  
      for (i = 0, len = tiles.length; i < len; i++) {
        tile = tiles[i];
  
        if (!tile.complete) {
          tile.onload = L.Util.falseFn;
          tile.onerror = L.Util.falseFn;
          tile.src = L.Util.emptyImageUrl;
  
          tile.parentNode.removeChild(tile);
        }
      }
    }
  });
  
  
  /*
   * Provides L.Map with convenient shortcuts for using browser geolocation features.
   */
  
  L.Map.include({
    _defaultLocateOptions: {
      watch: false,
      setView: false,
      maxZoom: Infinity,
      timeout: 10000,
      maximumAge: 0,
      enableHighAccuracy: false
    },
  
    locate: function (/*Object*/ options) {
  
      options = this._locateOptions = L.extend(this._defaultLocateOptions, options);
  
      if (!navigator.geolocation) {
        this._handleGeolocationError({
          code: 0,
          message: 'Geolocation not supported.'
        });
        return this;
      }
  
      var onResponse = L.bind(this._handleGeolocationResponse, this),
        onError = L.bind(this._handleGeolocationError, this);
  
      if (options.watch) {
        this._locationWatchId =
                navigator.geolocation.watchPosition(onResponse, onError, options);
      } else {
        navigator.geolocation.getCurrentPosition(onResponse, onError, options);
      }
      return this;
    },
  
    stopLocate: function () {
      if (navigator.geolocation) {
        navigator.geolocation.clearWatch(this._locationWatchId);
      }
      if (this._locateOptions) {
        this._locateOptions.setView = false;
      }
      return this;
    },
  
    _handleGeolocationError: function (error) {
      var c = error.code,
          message = error.message ||
                  (c === 1 ? 'permission denied' :
                  (c === 2 ? 'position unavailable' : 'timeout'));
  
      if (this._locateOptions.setView && !this._loaded) {
        this.fitWorld();
      }
  
      this.fire('locationerror', {
        code: c,
        message: 'Geolocation error: ' + message + '.'
      });
    },
  
    _handleGeolocationResponse: function (pos) {
      var lat = pos.coords.latitude,
          lng = pos.coords.longitude,
          latlng = new L.LatLng(lat, lng),
  
          latAccuracy = 180 * pos.coords.accuracy / 40075017,
          lngAccuracy = latAccuracy / Math.cos(L.LatLng.DEG_TO_RAD * lat),
  
          bounds = L.latLngBounds(
                  [lat - latAccuracy, lng - lngAccuracy],
                  [lat + latAccuracy, lng + lngAccuracy]),
  
          options = this._locateOptions;
  
      if (options.setView) {
        var zoom = Math.min(this.getBoundsZoom(bounds), options.maxZoom);
        this.setView(latlng, zoom);
      }
  
      var data = {
        latlng: latlng,
        bounds: bounds,
        timestamp: pos.timestamp
      };
  
      for (var i in pos.coords) {
        if (typeof pos.coords[i] === 'number') {
          data[i] = pos.coords[i];
        }
      }
  
      this.fire('locationfound', data);
    }
  });
  
  
  }(window, document));