text: // Snap.svg 0.3.0
  // 
  // Copyright (c) 2013 – 2014 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  // 
  // build: 2014-10-28
  
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  // ┌────────────────────────────────────────────────────────────┐ \\
  // │ Eve 0.4.2 - JavaScript Events Library                      │ \\
  // ├────────────────────────────────────────────────────────────┤ \\
  // │ Author Dmitry Baranovskiy (http://dmitry.baranovskiy.com/) │ \\
  // └────────────────────────────────────────────────────────────┘ \\
  
  (function (glob) {
      var version = "0.4.2",
          has = "hasOwnProperty",
          separator = /[\.\/]/,
          comaseparator = /\s*,\s*/,
          wildcard = "*",
          fun = function () {},
          numsort = function (a, b) {
              return a - b;
          },
          current_event,
          stop,
          events = {n: {}},
          firstDefined = function () {
              for (var i = 0, ii = this.length; i < ii; i++) {
                  if (typeof this[i] != "undefined") {
                      return this[i];
                  }
              }
          },
          lastDefined = function () {
              var i = this.length;
              while (--i) {
                  if (typeof this[i] != "undefined") {
                      return this[i];
                  }
              }
          },
      /*\
       * eve
       [ method ]
  
       * Fires event with given `name`, given scope and other parameters.
  
       > Arguments
  
       - name (string) name of the *event*, dot (`.`) or slash (`/`) separated
       - scope (object) context for the event handlers
       - varargs (...) the rest of arguments will be sent to event handlers
  
       = (object) array of returned values from the listeners. Array has two methods `.firstDefined()` and `.lastDefined()` to get first or last not `undefined` value.
       \*/
          eve = function (name, scope) {
              name = String(name);
              var e = events,
                  oldstop = stop,
                  args = Array.prototype.slice.call(arguments, 2),
                  listeners = eve.listeners(name),
                  z = 0,
                  f = false,
                  l,
                  indexed = [],
                  queue = {},
                  out = [],
                  ce = current_event,
                  errors = [];
              out.firstDefined = firstDefined;
              out.lastDefined = lastDefined;
              current_event = name;
              stop = 0;
              for (var i = 0, ii = listeners.length; i < ii; i++) if ("zIndex" in listeners[i]) {
                  indexed.push(listeners[i].zIndex);
                  if (listeners[i].zIndex < 0) {
                      queue[listeners[i].zIndex] = listeners[i];
                  }
              }
              indexed.sort(numsort);
              while (indexed[z] < 0) {
                  l = queue[indexed[z++]];
                  out.push(l.apply(scope, args));
                  if (stop) {
                      stop = oldstop;
                      return out;
                  }
              }
              for (i = 0; i < ii; i++) {
                  l = listeners[i];
                  if ("zIndex" in l) {
                      if (l.zIndex == indexed[z]) {
                          out.push(l.apply(scope, args));
                          if (stop) {
                              break;
                          }
                          do {
                              z++;
                              l = queue[indexed[z]];
                              l && out.push(l.apply(scope, args));
                              if (stop) {
                                  break;
                              }
                          } while (l)
                      } else {
                          queue[l.zIndex] = l;
                      }
                  } else {
                      out.push(l.apply(scope, args));
                      if (stop) {
                          break;
                      }
                  }
              }
              stop = oldstop;
              current_event = ce;
              return out;
          };
      // Undocumented. Debug only.
      eve._events = events;
      /*\
       * eve.listeners
       [ method ]
  
       * Internal method which gives you array of all event handlers that will be triggered by the given `name`.
  
       > Arguments
  
       - name (string) name of the event, dot (`.`) or slash (`/`) separated
  
       = (array) array of event handlers
       \*/
      eve.listeners = function (name) {
          var names = name.split(separator),
              e = events,
              item,
              items,
              k,
              i,
              ii,
              j,
              jj,
              nes,
              es = [e],
              out = [];
          for (i = 0, ii = names.length; i < ii; i++) {
              nes = [];
              for (j = 0, jj = es.length; j < jj; j++) {
                  e = es[j].n;
                  items = [e[names[i]], e[wildcard]];
                  k = 2;
                  while (k--) {
                      item = items[k];
                      if (item) {
                          nes.push(item);
                          out = out.concat(item.f || []);
                      }
                  }
              }
              es = nes;
          }
          return out;
      };
  
      /*\
       * eve.on
       [ method ]
       **
       * Binds given event handler with a given name. You can use wildcards “`*`” for the names:
       | eve.on("*.under.*", f);
       | eve("mouse.under.floor"); // triggers f
       * Use @eve to trigger the listener.
       **
       > Arguments
       **
       - name (string) name of the event, dot (`.`) or slash (`/`) separated, with optional wildcards
       - f (function) event handler function
       **
       = (function) returned function accepts a single numeric parameter that represents z-index of the handler. It is an optional feature and only used when you need to ensure that some subset of handlers will be invoked in a given order, despite of the order of assignment. 
       > Example:
       | eve.on("mouse", eatIt)(2);
       | eve.on("mouse", scream);
       | eve.on("mouse", catchIt)(1);
       * This will ensure that `catchIt` function will be called before `eatIt`.
       *
       * If you want to put your handler before non-indexed handlers, specify a negative value.
       * Note: I assume most of the time you don’t need to worry about z-index, but it’s nice to have this feature “just in case”.
       \*/
      eve.on = function (name, f) {
          name = String(name);
          if (typeof f != "function") {
              return function () {};
          }
          var names = name.split(comaseparator);
          for (var i = 0, ii = names.length; i < ii; i++) {
              (function (name) {
                  var names = name.split(separator),
                      e = events,
                      exist;
                  for (var i = 0, ii = names.length; i < ii; i++) {
                      e = e.n;
                      e = e.hasOwnProperty(names[i]) && e[names[i]] || (e[names[i]] = {n: {}});
                  }
                  e.f = e.f || [];
                  for (i = 0, ii = e.f.length; i < ii; i++) if (e.f[i] == f) {
                      exist = true;
                      break;
                  }
                  !exist && e.f.push(f);
              }(names[i]));
          }
          return function (zIndex) {
              if (+zIndex == +zIndex) {
                  f.zIndex = +zIndex;
              }
          };
      };
      /*\
       * eve.f
       [ method ]
       **
       * Returns function that will fire given event with optional arguments.
       * Arguments that will be passed to the result function will be also
       * concated to the list of final arguments.
       | el.onclick = eve.f("click", 1, 2);
       | eve.on("click", function (a, b, c) {
       |     console.log(a, b, c); // 1, 2, [event object]
       | });
       > Arguments
       - event (string) event name
       - varargs (…) and any other arguments
       = (function) possible event handler function
       \*/
      eve.f = function (event) {
          var attrs = [].slice.call(arguments, 1);
          return function () {
              eve.apply(null, [event, null].concat(attrs).concat([].slice.call(arguments, 0)));
          };
      };
      /*\
       * eve.stop
       [ method ]
       **
       * Is used inside an event handler to stop the event, preventing any subsequent listeners from firing.
       \*/
      eve.stop = function () {
          stop = 1;
      };
      /*\
       * eve.nt
       [ method ]
       **
       * Could be used inside event handler to figure out actual name of the event.
       **
       > Arguments
       **
       - subname (string) #optional subname of the event
       **
       = (string) name of the event, if `subname` is not specified
       * or
       = (boolean) `true`, if current event’s name contains `subname`
       \*/
      eve.nt = function (subname) {
          if (subname) {
              return new RegExp("(?:\\.|\\/|^)" + subname + "(?:\\.|\\/|$)").test(current_event);
          }
          return current_event;
      };
      /*\
       * eve.nts
       [ method ]
       **
       * Could be used inside event handler to figure out actual name of the event.
       **
       **
       = (array) names of the event
       \*/
      eve.nts = function () {
          return current_event.split(separator);
      };
      /*\
       * eve.off
       [ method ]
       **
       * Removes given function from the list of event listeners assigned to given name.
       * If no arguments specified all the events will be cleared.
       **
       > Arguments
       **
       - name (string) name of the event, dot (`.`) or slash (`/`) separated, with optional wildcards
       - f (function) event handler function
       \*/
      /*\
       * eve.unbind
       [ method ]
       **
       * See @eve.off
       \*/
      eve.off = eve.unbind = function (name, f) {
          if (!name) {
              eve._events = events = {n: {}};
              return;
          }
          var names = name.split(comaseparator);
          if (names.length > 1) {
              for (var i = 0, ii = names.length; i < ii; i++) {
                  eve.off(names[i], f);
              }
              return;
          }
          names = name.split(separator);
          var e,
              key,
              splice,
              i, ii, j, jj,
              cur = [events];
          for (i = 0, ii = names.length; i < ii; i++) {
              for (j = 0; j < cur.length; j += splice.length - 2) {
                  splice = [j, 1];
                  e = cur[j].n;
                  if (names[i] != wildcard) {
                      if (e[names[i]]) {
                          splice.push(e[names[i]]);
                      }
                  } else {
                      for (key in e) if (e[has](key)) {
                          splice.push(e[key]);
                      }
                  }
                  cur.splice.apply(cur, splice);
              }
          }
          for (i = 0, ii = cur.length; i < ii; i++) {
              e = cur[i];
              while (e.n) {
                  if (f) {
                      if (e.f) {
                          for (j = 0, jj = e.f.length; j < jj; j++) if (e.f[j] == f) {
                              e.f.splice(j, 1);
                              break;
                          }
                          !e.f.length && delete e.f;
                      }
                      for (key in e.n) if (e.n[has](key) && e.n[key].f) {
                          var funcs = e.n[key].f;
                          for (j = 0, jj = funcs.length; j < jj; j++) if (funcs[j] == f) {
                              funcs.splice(j, 1);
                              break;
                          }
                          !funcs.length && delete e.n[key].f;
                      }
                  } else {
                      delete e.f;
                      for (key in e.n) if (e.n[has](key) && e.n[key].f) {
                          delete e.n[key].f;
                      }
                  }
                  e = e.n;
              }
          }
      };
      /*\
       * eve.once
       [ method ]
       **
       * Binds given event handler with a given name to only run once then unbind itself.
       | eve.once("login", f);
       | eve("login"); // triggers f
       | eve("login"); // no listeners
       * Use @eve to trigger the listener.
       **
       > Arguments
       **
       - name (string) name of the event, dot (`.`) or slash (`/`) separated, with optional wildcards
       - f (function) event handler function
       **
       = (function) same return function as @eve.on
       \*/
      eve.once = function (name, f) {
          var f2 = function () {
              eve.unbind(name, f2);
              return f.apply(this, arguments);
          };
          return eve.on(name, f2);
      };
      /*\
       * eve.version
       [ property (string) ]
       **
       * Current version of the library.
       \*/
      eve.version = version;
      eve.toString = function () {
          return "You are running Eve " + version;
      };
      (typeof module != "undefined" && module.exports) ? (module.exports = eve) : (typeof define === "function" && define.amd ? (define("eve", [], function() { return eve; })) : (glob.eve = eve));
  })(this);
  
  (function (glob, factory) {
      // AMD support
      if (typeof define == "function" && define.amd) {
          // Define as an anonymous module
          define(["eve"], function (eve) {
              return factory(glob, eve);
          });
      } else if (typeof exports != 'undefined') {
          // Next for Node.js or CommonJS
          var eve = require('eve');
          module.exports = factory(glob, eve);
      } else {
          // Browser globals (glob is window)
          // Snap adds itself to window
          factory(glob, glob.eve);
      }
  }(window || this, function (window, eve) {
  
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      var mina = (function (eve) {
          var animations = {},
              requestAnimFrame = window.requestAnimationFrame       ||
                  window.webkitRequestAnimationFrame ||
                  window.mozRequestAnimationFrame    ||
                  window.oRequestAnimationFrame      ||
                  window.msRequestAnimationFrame     ||
                  function (callback) {
                      setTimeout(callback, 16);
                  },
              isArray = Array.isArray || function (a) {
                      return a instanceof Array ||
                          Object.prototype.toString.call(a) == "[object Array]";
                  },
              idgen = 0,
              idprefix = "M" + (+new Date).toString(36),
              ID = function () {
                  return idprefix + (idgen++).toString(36);
              },
              diff = function (a, b, A, B) {
                  if (isArray(a)) {
                      res = [];
                      for (var i = 0, ii = a.length; i < ii; i++) {
                          res[i] = diff(a[i], b, A[i], B);
                      }
                      return res;
                  }
                  var dif = (A - a) / (B - b);
                  return function (bb) {
                      return a + dif * (bb - b);
                  };
              },
              timer = Date.now || function () {
                      return +new Date;
                  },
              sta = function (val) {
                  var a = this;
                  if (val == null) {
                      return a.s;
                  }
                  var ds = a.s - val;
                  a.b += a.dur * ds;
                  a.B += a.dur * ds;
                  a.s = val;
              },
              speed = function (val) {
                  var a = this;
                  if (val == null) {
                      return a.spd;
                  }
                  a.spd = val;
              },
              duration = function (val) {
                  var a = this;
                  if (val == null) {
                      return a.dur;
                  }
                  a.s = a.s * val / a.dur;
                  a.dur = val;
              },
              stopit = function () {
                  var a = this;
                  delete animations[a.id];
                  a.update();
                  eve("mina.stop." + a.id, a);
              },
              pause = function () {
                  var a = this;
                  if (a.pdif) {
                      return;
                  }
                  delete animations[a.id];
                  a.update();
                  a.pdif = a.get() - a.b;
              },
              resume = function () {
                  var a = this;
                  if (!a.pdif) {
                      return;
                  }
                  a.b = a.get() - a.pdif;
                  delete a.pdif;
                  animations[a.id] = a;
              },
              update = function () {
                  var a = this,
                      res;
                  if (isArray(a.start)) {
                      res = [];
                      for (var j = 0, jj = a.start.length; j < jj; j++) {
                          res[j] = +a.start[j] +
                          (a.end[j] - a.start[j]) * a.easing(a.s);
                      }
                  } else {
                      res = +a.start + (a.end - a.start) * a.easing(a.s);
                  }
                  a.set(res);
              },
              frame = function () {
                  var len = 0;
                  for (var i in animations) if (animations.hasOwnProperty(i)) {
                      var a = animations[i],
                          b = a.get(),
                          res;
                      len++;
                      a.s = (b - a.b) / (a.dur / a.spd);
                      if (a.s >= 1) {
                          delete animations[i];
                          a.s = 1;
                          len--;
                          (function (a) {
                              setTimeout(function () {
                                  eve("mina.finish." + a.id, a);
                              });
                          }(a));
                      }
                      a.update();
                  }
                  len && requestAnimFrame(frame);
              },
          /*\
           * mina
           [ method ]
           **
           * Generic animation of numbers
           **
           - a (number) start _slave_ number
           - A (number) end _slave_ number
           - b (number) start _master_ number (start time in general case)
           - B (number) end _master_ number (end time in gereal case)
           - get (function) getter of _master_ number (see @mina.time)
           - set (function) setter of _slave_ number
           - easing (function) #optional easing function, default is @mina.linear
           = (object) animation descriptor
           o {
           o         id (string) animation id,
           o         start (number) start _slave_ number,
           o         end (number) end _slave_ number,
           o         b (number) start _master_ number,
           o         s (number) animation status (0..1),
           o         dur (number) animation duration,
           o         spd (number) animation speed,
           o         get (function) getter of _master_ number (see @mina.time),
           o         set (function) setter of _slave_ number,
           o         easing (function) easing function, default is @mina.linear,
           o         status (function) status getter/setter,
           o         speed (function) speed getter/setter,
           o         duration (function) duration getter/setter,
           o         stop (function) animation stopper
           o         pause (function) pauses the animation
           o         resume (function) resumes the animation
           o         update (function) calles setter with the right value of the animation
           o }
           \*/
              mina = function (a, A, b, B, get, set, easing) {
                  var anim = {
                      id: ID(),
                      start: a,
                      end: A,
                      b: b,
                      s: 0,
                      dur: B - b,
                      spd: 1,
                      get: get,
                      set: set,
                      easing: easing || mina.linear,
                      status: sta,
                      speed: speed,
                      duration: duration,
                      stop: stopit,
                      pause: pause,
                      resume: resume,
                      update: update
                  };
                  animations[anim.id] = anim;
                  var len = 0, i;
                  for (i in animations) if (animations.hasOwnProperty(i)) {
                      len++;
                      if (len == 2) {
                          break;
                      }
                  }
                  len == 1 && requestAnimFrame(frame);
                  return anim;
              };
          /*\
           * mina.time
           [ method ]
           **
           * Returns the current time. Equivalent to:
           | function () {
           |     return (new Date).getTime();
           | }
           \*/
          mina.time = timer;
          /*\
           * mina.getById
           [ method ]
           **
           * Returns an animation by its id
           - id (string) animation's id
           = (object) See @mina
           \*/
          mina.getById = function (id) {
              return animations[id] || null;
          };
  
          /*\
           * mina.linear
           [ method ]
           **
           * Default linear easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.linear = function (n) {
              return n;
          };
          /*\
           * mina.easeout
           [ method ]
           **
           * Easeout easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.easeout = function (n) {
              return Math.pow(n, 1.7);
          };
          /*\
           * mina.easein
           [ method ]
           **
           * Easein easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.easein = function (n) {
              return Math.pow(n, .48);
          };
          /*\
           * mina.easeinout
           [ method ]
           **
           * Easeinout easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.easeinout = function (n) {
              if (n == 1) {
                  return 1;
              }
              if (n == 0) {
                  return 0;
              }
              var q = .48 - n / 1.04,
                  Q = Math.sqrt(.1734 + q * q),
                  x = Q - q,
                  X = Math.pow(Math.abs(x), 1 / 3) * (x < 0 ? -1 : 1),
                  y = -Q - q,
                  Y = Math.pow(Math.abs(y), 1 / 3) * (y < 0 ? -1 : 1),
                  t = X + Y + .5;
              return (1 - t) * 3 * t * t + t * t * t;
          };
          /*\
           * mina.backin
           [ method ]
           **
           * Backin easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.backin = function (n) {
              if (n == 1) {
                  return 1;
              }
              var s = 1.70158;
              return n * n * ((s + 1) * n - s);
          };
          /*\
           * mina.backout
           [ method ]
           **
           * Backout easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.backout = function (n) {
              if (n == 0) {
                  return 0;
              }
              n = n - 1;
              var s = 1.70158;
              return n * n * ((s + 1) * n + s) + 1;
          };
          /*\
           * mina.elastic
           [ method ]
           **
           * Elastic easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.elastic = function (n) {
              if (n == !!n) {
                  return n;
              }
              return Math.pow(2, -10 * n) * Math.sin((n - .075) *
                  (2 * Math.PI) / .3) + 1;
          };
          /*\
           * mina.bounce
           [ method ]
           **
           * Bounce easing
           - n (number) input 0..1
           = (number) output 0..1
           \*/
          mina.bounce = function (n) {
              var s = 7.5625,
                  p = 2.75,
                  l;
              if (n < (1 / p)) {
                  l = s * n * n;
              } else {
                  if (n < (2 / p)) {
                      n -= (1.5 / p);
                      l = s * n * n + .75;
                  } else {
                      if (n < (2.5 / p)) {
                          n -= (2.25 / p);
                          l = s * n * n + .9375;
                      } else {
                          n -= (2.625 / p);
                          l = s * n * n + .984375;
                      }
                  }
              }
              return l;
          };
          window.mina = mina;
          return mina;
      })(typeof eve == "undefined" ? function () {} : eve);
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
      var Snap = (function(root) {
          Snap.version = "0.3.0";
          /*\
           * Snap
           [ method ]
           **
           * Creates a drawing surface or wraps existing SVG element.
           **
           - width (number|string) width of surface
           - height (number|string) height of surface
           * or
           - DOM (SVGElement) element to be wrapped into Snap structure
           * or
           - array (array) array of elements (will return set of elements)
           * or
           - query (string) CSS query selector
           = (object) @Element
           \*/
          function Snap(w, h) {
              if (w) {
                  if (w.nodeType) {
                      return wrap(w);
                  }
                  if (is(w, "array") && Snap.set) {
                      return Snap.set.apply(Snap, w);
                  }
                  if (w instanceof Element) {
                      return w;
                  }
                  if (h == null) {
                      w = glob.doc.querySelector(String(w));
                      return wrap(w);
                  }
              }
              w = w == null ? "100%" : w;
              h = h == null ? "100%" : h;
              return new Paper(w, h);
          }
          Snap.toString = function () {
              return "Snap v" + this.version;
          };
          Snap._ = {};
          var glob = {
              win: root.window,
              doc: root.window.document
          };
          Snap._.glob = glob;
          var has = "hasOwnProperty",
              Str = String,
              toFloat = parseFloat,
              toInt = parseInt,
              math = Math,
              mmax = math.max,
              mmin = math.min,
              abs = math.abs,
              pow = math.pow,
              PI = math.PI,
              round = math.round,
              E = "",
              S = " ",
              objectToString = Object.prototype.toString,
              ISURL = /^url\(['"]?([^\)]+?)['"]?\)$/i,
              colourRegExp = /^\s*((#[a-f\d]{6})|(#[a-f\d]{3})|rgba?\(\s*([\d\.]+%?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+%?(?:\s*,\s*[\d\.]+%?)?)\s*\)|hsba?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?%?)\s*\)|hsla?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?%?)\s*\))\s*$/i,
              bezierrg = /^(?:cubic-)?bezier\(([^,]+),([^,]+),([^,]+),([^\)]+)\)/,
              reURLValue = /^url\(#?([^)]+)\)$/,
              separator = Snap._.separator = /[,\s]+/,
              whitespace = /[\s]/g,
              commaSpaces = /[\s]*,[\s]*/,
              hsrg = {hs: 1, rg: 1},
              pathCommand = /([a-z])[\s,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\s]*,?[\s]*)+)/ig,
              tCommand = /([rstm])[\s,]*((-?\d*\.?\d*(?:e[\-+]?\d+)?[\s]*,?[\s]*)+)/ig,
              pathValues = /(-?\d*\.?\d*(?:e[\-+]?\\d+)?)[\s]*,?[\s]*/ig,
              idgen = 0,
              idprefix = "S" + (+new Date).toString(36),
              ID = function (el) {
                  return (el && el.type ? el.type : E) + idprefix + (idgen++).toString(36);
              },
              xlink = "http://www.w3.org/1999/xlink",
              xmlns = "http://www.w3.org/2000/svg",
              hub = {},
              URL = Snap.url = function (url) {
                  return "url('#" + url + "')";
              };
  
          function $(el, attr) {
              if (attr) {
                  if (el == "#text") {
                      el = glob.doc.createTextNode(attr.text || attr["#text"] || "");
                  }
                  if (el == "#comment") {
                      el = glob.doc.createComment(attr.text || attr["#text"] || "");
                  }
                  if (typeof el == "string") {
                      el = $(el);
                  }
                  if (typeof attr == "string") {
                      if (el.nodeType == 1) {
                          if (attr.substring(0, 6) == "xlink:") {
                              return el.getAttributeNS(xlink, attr.substring(6));
                          }
                          if (attr.substring(0, 4) == "xml:") {
                              return el.getAttributeNS(xmlns, attr.substring(4));
                          }
                          return el.getAttribute(attr);
                      } else if (attr == "text") {
                          return el.nodeValue;
                      } else {
                          return null;
                      }
                  }
                  if (el.nodeType == 1) {
                      for (var key in attr) if (attr[has](key)) {
                          var val = Str(attr[key]);
                          if (val) {
                              if (key.substring(0, 6) == "xlink:") {
                                  el.setAttributeNS(xlink, key.substring(6), val);
                              } else if (key.substring(0, 4) == "xml:") {
                                  el.setAttributeNS(xmlns, key.substring(4), val);
                              } else {
                                  el.setAttribute(key, val);
                              }
                          } else {
                              el.removeAttribute(key);
                          }
                      }
                  } else if ("text" in attr) {
                      el.nodeValue = attr.text;
                  }
              } else {
                  el = glob.doc.createElementNS(xmlns, el);
              }
              return el;
          }
          Snap._.$ = $;
          Snap._.id = ID;
          function getAttrs(el) {
              var attrs = el.attributes,
                  name,
                  out = {};
              for (var i = 0; i < attrs.length; i++) {
                  if (attrs[i].namespaceURI == xlink) {
                      name = "xlink:";
                  } else {
                      name = "";
                  }
                  name += attrs[i].name;
                  out[name] = attrs[i].textContent;
              }
              return out;
          }
          function is(o, type) {
              type = Str.prototype.toLowerCase.call(type);
              if (type == "finite") {
                  return isFinite(o);
              }
              if (type == "array" &&
                  (o instanceof Array || Array.isArray && Array.isArray(o))) {
                  return true;
              }
              return  (type == "null" && o === null) ||
                  (type == typeof o && o !== null) ||
                  (type == "object" && o === Object(o)) ||
                  objectToString.call(o).slice(8, -1).toLowerCase() == type;
          }
          /*\
           * Snap.format
           [ method ]
           **
           * Replaces construction of type `{<name>}` to the corresponding argument
           **
           - token (string) string to format
           - json (object) object which properties are used as a replacement
           = (string) formatted string
           > Usage
           | // this draws a rectangular shape equivalent to "M10,20h40v50h-40z"
           | paper.path(Snap.format("M{x},{y}h{dim.width}v{dim.height}h{dim['negative width']}z", {
           |     x: 10,
           |     y: 20,
           |     dim: {
           |         width: 40,
           |         height: 50,
           |         "negative width": -40
           |     }
           | }));
           \*/
          Snap.format = (function () {
              var tokenRegex = /\{([^\}]+)\}/g,
                  objNotationRegex = /(?:(?:^|\.)(.+?)(?=\[|\.|$|\()|\[('|")(.+?)\2\])(\(\))?/g, // matches .xxxxx or ["xxxxx"] to run over object properties
                  replacer = function (all, key, obj) {
                      var res = obj;
                      key.replace(objNotationRegex, function (all, name, quote, quotedName, isFunc) {
                          name = name || quotedName;
                          if (res) {
                              if (name in res) {
                                  res = res[name];
                              }
                              typeof res == "function" && isFunc && (res = res());
                          }
                      });
                      res = (res == null || res == obj ? all : res) + "";
                      return res;
                  };
              return function (str, obj) {
                  return Str(str).replace(tokenRegex, function (all, key) {
                      return replacer(all, key, obj);
                  });
              };
          })();
          function clone(obj) {
              if (typeof obj == "function" || Object(obj) !== obj) {
                  return obj;
              }
              var res = new obj.constructor;
              for (var key in obj) if (obj[has](key)) {
                  res[key] = clone(obj[key]);
              }
              return res;
          }
          Snap._.clone = clone;
          function repush(array, item) {
              for (var i = 0, ii = array.length; i < ii; i++) if (array[i] === item) {
                  return array.push(array.splice(i, 1)[0]);
              }
          }
          function cacher(f, scope, postprocessor) {
              function newf() {
                  var arg = Array.prototype.slice.call(arguments, 0),
                      args = arg.join("\u2400"),
                      cache = newf.cache = newf.cache || {},
                      count = newf.count = newf.count || [];
                  if (cache[has](args)) {
                      repush(count, args);
                      return postprocessor ? postprocessor(cache[args]) : cache[args];
                  }
                  count.length >= 1e3 && delete cache[count.shift()];
                  count.push(args);
                  cache[args] = f.apply(scope, arg);
                  return postprocessor ? postprocessor(cache[args]) : cache[args];
              }
              return newf;
          }
          Snap._.cacher = cacher;
          function angle(x1, y1, x2, y2, x3, y3) {
              if (x3 == null) {
                  var x = x1 - x2,
                      y = y1 - y2;
                  if (!x && !y) {
                      return 0;
                  }
                  return (180 + math.atan2(-y, -x) * 180 / PI + 360) % 360;
              } else {
                  return angle(x1, y1, x3, y3) - angle(x2, y2, x3, y3);
              }
          }
          function rad(deg) {
              return deg % 360 * PI / 180;
          }
          function deg(rad) {
              return rad * 180 / PI % 360;
          }
          function x_y() {
              return this.x + S + this.y;
          }
          function x_y_w_h() {
              return this.x + S + this.y + S + this.width + " \xd7 " + this.height;
          }
  
          /*\
           * Snap.rad
           [ method ]
           **
           * Transform angle to radians
           - deg (number) angle in degrees
           = (number) angle in radians
           \*/
          Snap.rad = rad;
          /*\
           * Snap.deg
           [ method ]
           **
           * Transform angle to degrees
           - rad (number) angle in radians
           = (number) angle in degrees
           \*/
          Snap.deg = deg;
          /*\
           * Snap.sin
           [ method ]
           **
           * Equivalent to `Math.sin()` only works with degrees, not radians.
           - angle (number) angle in degrees
           = (number) sin
           \*/
          Snap.sin = function (angle) {
              return math.sin(Snap.rad(angle));
          };
          /*\
           * Snap.tan
           [ method ]
           **
           * Equivalent to `Math.tan()` only works with degrees, not radians.
           - angle (number) angle in degrees
           = (number) tan
           \*/
          Snap.tan = function (angle) {
              return math.tan(Snap.rad(angle));
          };
          /*\
           * Snap.cos
           [ method ]
           **
           * Equivalent to `Math.cos()` only works with degrees, not radians.
           - angle (number) angle in degrees
           = (number) cos
           \*/
          Snap.cos = function (angle) {
              return math.cos(Snap.rad(angle));
          };
          /*\
           * Snap.asin
           [ method ]
           **
           * Equivalent to `Math.asin()` only works with degrees, not radians.
           - num (number) value
           = (number) asin in degrees
           \*/
          Snap.asin = function (num) {
              return Snap.deg(math.asin(num));
          };
          /*\
           * Snap.acos
           [ method ]
           **
           * Equivalent to `Math.acos()` only works with degrees, not radians.
           - num (number) value
           = (number) acos in degrees
           \*/
          Snap.acos = function (num) {
              return Snap.deg(math.acos(num));
          };
          /*\
           * Snap.atan
           [ method ]
           **
           * Equivalent to `Math.atan()` only works with degrees, not radians.
           - num (number) value
           = (number) atan in degrees
           \*/
          Snap.atan = function (num) {
              return Snap.deg(math.atan(num));
          };
          /*\
           * Snap.atan2
           [ method ]
           **
           * Equivalent to `Math.atan2()` only works with degrees, not radians.
           - num (number) value
           = (number) atan2 in degrees
           \*/
          Snap.atan2 = function (num) {
              return Snap.deg(math.atan2(num));
          };
          /*\
           * Snap.angle
           [ method ]
           **
           * Returns an angle between two or three points
           > Parameters
           - x1 (number) x coord of first point
           - y1 (number) y coord of first point
           - x2 (number) x coord of second point
           - y2 (number) y coord of second point
           - x3 (number) #optional x coord of third point
           - y3 (number) #optional y coord of third point
           = (number) angle in degrees
           \*/
          Snap.angle = angle;
          /*\
           * Snap.len
           [ method ]
           **
           * Returns distance between two points
           > Parameters
           - x1 (number) x coord of first point
           - y1 (number) y coord of first point
           - x2 (number) x coord of second point
           - y2 (number) y coord of second point
           = (number) distance
           \*/
          Snap.len = function (x1, y1, x2, y2) {
              return Math.sqrt(Snap.len2(x1, y1, x2, y2));
          };
          /*\
           * Snap.len2
           [ method ]
           **
           * Returns squared distance between two points
           > Parameters
           - x1 (number) x coord of first point
           - y1 (number) y coord of first point
           - x2 (number) x coord of second point
           - y2 (number) y coord of second point
           = (number) distance
           \*/
          Snap.len2 = function (x1, y1, x2, y2) {
              return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
          };
          /*\
           * Snap.closestPoint
           [ method ]
           **
           * Returns closest point to a given one on a given path.
           > Parameters
           - path (Element) path element
           - x (number) x coord of a point
           - y (number) y coord of a point
           = (object) in format
           {
           x (number) x coord of the point on the path
           y (number) y coord of the point on the path
           length (number) length of the path to the point
           distance (number) distance from the given point to the path
           }
           \*/
  // Copied from http://bl.ocks.org/mbostock/8027637
          Snap.closestPoint = function (path, x, y) {
              function distance2(p) {
                  var dx = p.x - x,
                      dy = p.y - y;
                  return dx * dx + dy * dy;
              }
              var pathNode = path.node,
                  pathLength = pathNode.getTotalLength(),
                  precision = pathLength / pathNode.pathSegList.numberOfItems * .125,
                  best,
                  bestLength,
                  bestDistance = Infinity;
  
              // linear scan for coarse approximation
              for (var scan, scanLength = 0, scanDistance; scanLength <= pathLength; scanLength += precision) {
                  if ((scanDistance = distance2(scan = pathNode.getPointAtLength(scanLength))) < bestDistance) {
                      best = scan, bestLength = scanLength, bestDistance = scanDistance;
                  }
              }
  
              // binary search for precise estimate
              precision *= .5;
              while (precision > .5) {
                  var before,
                      after,
                      beforeLength,
                      afterLength,
                      beforeDistance,
                      afterDistance;
                  if ((beforeLength = bestLength - precision) >= 0 && (beforeDistance = distance2(before = pathNode.getPointAtLength(beforeLength))) < bestDistance) {
                      best = before, bestLength = beforeLength, bestDistance = beforeDistance;
                  } else if ((afterLength = bestLength + precision) <= pathLength && (afterDistance = distance2(after = pathNode.getPointAtLength(afterLength))) < bestDistance) {
                      best = after, bestLength = afterLength, bestDistance = afterDistance;
                  } else {
                      precision *= .5;
                  }
              }
  
              best = {
                  x: best.x,
                  y: best.y,
                  length: bestLength,
                  distance: Math.sqrt(bestDistance)
              };
              return best;
          }
          /*\
           * Snap.is
           [ method ]
           **
           * Handy replacement for the `typeof` operator
           - o (…) any object or primitive
           - type (string) name of the type, e.g., `string`, `function`, `number`, etc.
           = (boolean) `true` if given value is of given type
           \*/
          Snap.is = is;
          /*\
           * Snap.snapTo
           [ method ]
           **
           * Snaps given value to given grid
           - values (array|number) given array of values or step of the grid
           - value (number) value to adjust
           - tolerance (number) #optional maximum distance to the target value that would trigger the snap. Default is `10`.
           = (number) adjusted value
           \*/
          Snap.snapTo = function (values, value, tolerance) {
              tolerance = is(tolerance, "finite") ? tolerance : 10;
              if (is(values, "array")) {
                  var i = values.length;
                  while (i--) if (abs(values[i] - value) <= tolerance) {
                      return values[i];
                  }
              } else {
                  values = +values;
                  var rem = value % values;
                  if (rem < tolerance) {
                      return value - rem;
                  }
                  if (rem > values - tolerance) {
                      return value - rem + values;
                  }
              }
              return value;
          };
  // Colour
          /*\
           * Snap.getRGB
           [ method ]
           **
           * Parses color string as RGB object
           - color (string) color string in one of the following formats:
           # <ul>
           #     <li>Color name (<code>red</code>, <code>green</code>, <code>cornflowerblue</code>, etc)</li>
           #     <li>#••• — shortened HTML color: (<code>#000</code>, <code>#fc0</code>, etc.)</li>
           #     <li>#•••••• — full length HTML color: (<code>#000000</code>, <code>#bd2300</code>)</li>
           #     <li>rgb(•••, •••, •••) — red, green and blue channels values: (<code>rgb(200,&nbsp;100,&nbsp;0)</code>)</li>
           #     <li>rgba(•••, •••, •••, •••) — also with opacity</li>
           #     <li>rgb(•••%, •••%, •••%) — same as above, but in %: (<code>rgb(100%,&nbsp;175%,&nbsp;0%)</code>)</li>
           #     <li>rgba(•••%, •••%, •••%, •••%) — also with opacity</li>
           #     <li>hsb(•••, •••, •••) — hue, saturation and brightness values: (<code>hsb(0.5,&nbsp;0.25,&nbsp;1)</code>)</li>
           #     <li>hsba(•••, •••, •••, •••) — also with opacity</li>
           #     <li>hsb(•••%, •••%, •••%) — same as above, but in %</li>
           #     <li>hsba(•••%, •••%, •••%, •••%) — also with opacity</li>
           #     <li>hsl(•••, •••, •••) — hue, saturation and luminosity values: (<code>hsb(0.5,&nbsp;0.25,&nbsp;0.5)</code>)</li>
           #     <li>hsla(•••, •••, •••, •••) — also with opacity</li>
           #     <li>hsl(•••%, •••%, •••%) — same as above, but in %</li>
           #     <li>hsla(•••%, •••%, •••%, •••%) — also with opacity</li>
           # </ul>
           * Note that `%` can be used any time: `rgb(20%, 255, 50%)`.
           = (object) RGB object in the following format:
           o {
           o     r (number) red,
           o     g (number) green,
           o     b (number) blue,
           o     hex (string) color in HTML/CSS format: #••••••,
           o     error (boolean) true if string can't be parsed
           o }
           \*/
          Snap.getRGB = cacher(function (colour) {
              if (!colour || !!((colour = Str(colour)).indexOf("-") + 1)) {
                  return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: rgbtoString};
              }
              if (colour == "none") {
                  return {r: -1, g: -1, b: -1, hex: "none", toString: rgbtoString};
              }
              !(hsrg[has](colour.toLowerCase().substring(0, 2)) || colour.charAt() == "#") && (colour = toHex(colour));
              if (!colour) {
                  return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: rgbtoString};
              }
              var res,
                  red,
                  green,
                  blue,
                  opacity,
                  t,
                  values,
                  rgb = colour.match(colourRegExp);
              if (rgb) {
                  if (rgb[2]) {
                      blue = toInt(rgb[2].substring(5), 16);
                      green = toInt(rgb[2].substring(3, 5), 16);
                      red = toInt(rgb[2].substring(1, 3), 16);
                  }
                  if (rgb[3]) {
                      blue = toInt((t = rgb[3].charAt(3)) + t, 16);
                      green = toInt((t = rgb[3].charAt(2)) + t, 16);
                      red = toInt((t = rgb[3].charAt(1)) + t, 16);
                  }
                  if (rgb[4]) {
                      values = rgb[4].split(commaSpaces);
                      red = toFloat(values[0]);
                      values[0].slice(-1) == "%" && (red *= 2.55);
                      green = toFloat(values[1]);
                      values[1].slice(-1) == "%" && (green *= 2.55);
                      blue = toFloat(values[2]);
                      values[2].slice(-1) == "%" && (blue *= 2.55);
                      rgb[1].toLowerCase().slice(0, 4) == "rgba" && (opacity = toFloat(values[3]));
                      values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                  }
                  if (rgb[5]) {
                      values = rgb[5].split(commaSpaces);
                      red = toFloat(values[0]);
                      values[0].slice(-1) == "%" && (red /= 100);
                      green = toFloat(values[1]);
                      values[1].slice(-1) == "%" && (green /= 100);
                      blue = toFloat(values[2]);
                      values[2].slice(-1) == "%" && (blue /= 100);
                      (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                      rgb[1].toLowerCase().slice(0, 4) == "hsba" && (opacity = toFloat(values[3]));
                      values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                      return Snap.hsb2rgb(red, green, blue, opacity);
                  }
                  if (rgb[6]) {
                      values = rgb[6].split(commaSpaces);
                      red = toFloat(values[0]);
                      values[0].slice(-1) == "%" && (red /= 100);
                      green = toFloat(values[1]);
                      values[1].slice(-1) == "%" && (green /= 100);
                      blue = toFloat(values[2]);
                      values[2].slice(-1) == "%" && (blue /= 100);
                      (values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
                      rgb[1].toLowerCase().slice(0, 4) == "hsla" && (opacity = toFloat(values[3]));
                      values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
                      return Snap.hsl2rgb(red, green, blue, opacity);
                  }
                  red = mmin(math.round(red), 255);
                  green = mmin(math.round(green), 255);
                  blue = mmin(math.round(blue), 255);
                  opacity = mmin(mmax(opacity, 0), 1);
                  rgb = {r: red, g: green, b: blue, toString: rgbtoString};
                  rgb.hex = "#" + (16777216 | blue | (green << 8) | (red << 16)).toString(16).slice(1);
                  rgb.opacity = is(opacity, "finite") ? opacity : 1;
                  return rgb;
              }
              return {r: -1, g: -1, b: -1, hex: "none", error: 1, toString: rgbtoString};
          }, Snap);
  // SIERRA It seems odd that the following 3 conversion methods are not expressed as .this2that(), like the others.
          /*\
           * Snap.hsb
           [ method ]
           **
           * Converts HSB values to a hex representation of the color
           - h (number) hue
           - s (number) saturation
           - b (number) value or brightness
           = (string) hex representation of the color
           \*/
          Snap.hsb = cacher(function (h, s, b) {
              return Snap.hsb2rgb(h, s, b).hex;
          });
          /*\
           * Snap.hsl
           [ method ]
           **
           * Converts HSL values to a hex representation of the color
           - h (number) hue
           - s (number) saturation
           - l (number) luminosity
           = (string) hex representation of the color
           \*/
          Snap.hsl = cacher(function (h, s, l) {
              return Snap.hsl2rgb(h, s, l).hex;
          });
          /*\
           * Snap.rgb
           [ method ]
           **
           * Converts RGB values to a hex representation of the color
           - r (number) red
           - g (number) green
           - b (number) blue
           = (string) hex representation of the color
           \*/
          Snap.rgb = cacher(function (r, g, b, o) {
              if (is(o, "finite")) {
                  var round = math.round;
                  return "rgba(" + [round(r), round(g), round(b), +o.toFixed(2)] + ")";
              }
              return "#" + (16777216 | b | (g << 8) | (r << 16)).toString(16).slice(1);
          });
          var toHex = function (color) {
                  var i = glob.doc.getElementsByTagName("head")[0] || glob.doc.getElementsByTagName("svg")[0],
                      red = "rgb(255, 0, 0)";
                  toHex = cacher(function (color) {
                      if (color.toLowerCase() == "red") {
                          return red;
                      }
                      i.style.color = red;
                      i.style.color = color;
                      var out = glob.doc.defaultView.getComputedStyle(i, E).getPropertyValue("color");
                      return out == red ? null : out;
                  });
                  return toHex(color);
              },
              hsbtoString = function () {
                  return "hsb(" + [this.h, this.s, this.b] + ")";
              },
              hsltoString = function () {
                  return "hsl(" + [this.h, this.s, this.l] + ")";
              },
              rgbtoString = function () {
                  return this.opacity == 1 || this.opacity == null ?
                      this.hex :
                  "rgba(" + [this.r, this.g, this.b, this.opacity] + ")";
              },
              prepareRGB = function (r, g, b) {
                  if (g == null && is(r, "object") && "r" in r && "g" in r && "b" in r) {
                      b = r.b;
                      g = r.g;
                      r = r.r;
                  }
                  if (g == null && is(r, string)) {
                      var clr = Snap.getRGB(r);
                      r = clr.r;
                      g = clr.g;
                      b = clr.b;
                  }
                  if (r > 1 || g > 1 || b > 1) {
                      r /= 255;
                      g /= 255;
                      b /= 255;
                  }
  
                  return [r, g, b];
              },
              packageRGB = function (r, g, b, o) {
                  r = math.round(r * 255);
                  g = math.round(g * 255);
                  b = math.round(b * 255);
                  var rgb = {
                      r: r,
                      g: g,
                      b: b,
                      opacity: is(o, "finite") ? o : 1,
                      hex: Snap.rgb(r, g, b),
                      toString: rgbtoString
                  };
                  is(o, "finite") && (rgb.opacity = o);
                  return rgb;
              };
          /*\
           * Snap.color
           [ method ]
           **
           * Parses the color string and returns an object featuring the color's component values
           - clr (string) color string in one of the supported formats (see @Snap.getRGB)
           = (object) Combined RGB/HSB object in the following format:
           o {
           o     r (number) red,
           o     g (number) green,
           o     b (number) blue,
           o     hex (string) color in HTML/CSS format: #••••••,
           o     error (boolean) `true` if string can't be parsed,
           o     h (number) hue,
           o     s (number) saturation,
           o     v (number) value (brightness),
           o     l (number) lightness
           o }
           \*/
          Snap.color = function (clr) {
              var rgb;
              if (is(clr, "object") && "h" in clr && "s" in clr && "b" in clr) {
                  rgb = Snap.hsb2rgb(clr);
                  clr.r = rgb.r;
                  clr.g = rgb.g;
                  clr.b = rgb.b;
                  clr.opacity = 1;
                  clr.hex = rgb.hex;
              } else if (is(clr, "object") && "h" in clr && "s" in clr && "l" in clr) {
                  rgb = Snap.hsl2rgb(clr);
                  clr.r = rgb.r;
                  clr.g = rgb.g;
                  clr.b = rgb.b;
                  clr.opacity = 1;
                  clr.hex = rgb.hex;
              } else {
                  if (is(clr, "string")) {
                      clr = Snap.getRGB(clr);
                  }
                  if (is(clr, "object") && "r" in clr && "g" in clr && "b" in clr && !("error" in clr)) {
                      rgb = Snap.rgb2hsl(clr);
                      clr.h = rgb.h;
                      clr.s = rgb.s;
                      clr.l = rgb.l;
                      rgb = Snap.rgb2hsb(clr);
                      clr.v = rgb.b;
                  } else {
                      clr = {hex: "none"};
                      clr.r = clr.g = clr.b = clr.h = clr.s = clr.v = clr.l = -1;
                      clr.error = 1;
                  }
              }
              clr.toString = rgbtoString;
              return clr;
          };
          /*\
           * Snap.hsb2rgb
           [ method ]
           **
           * Converts HSB values to an RGB object
           - h (number) hue
           - s (number) saturation
           - v (number) value or brightness
           = (object) RGB object in the following format:
           o {
           o     r (number) red,
           o     g (number) green,
           o     b (number) blue,
           o     hex (string) color in HTML/CSS format: #••••••
           o }
           \*/
          Snap.hsb2rgb = function (h, s, v, o) {
              if (is(h, "object") && "h" in h && "s" in h && "b" in h) {
                  v = h.b;
                  s = h.s;
                  o = h.o;
                  h = h.h;
              }
              h *= 360;
              var R, G, B, X, C;
              h = (h % 360) / 60;
              C = v * s;
              X = C * (1 - abs(h % 2 - 1));
              R = G = B = v - C;
  
              h = ~~h;
              R += [C, X, 0, 0, X, C][h];
              G += [X, C, C, X, 0, 0][h];
              B += [0, 0, X, C, C, X][h];
              return packageRGB(R, G, B, o);
          };
          /*\
           * Snap.hsl2rgb
           [ method ]
           **
           * Converts HSL values to an RGB object
           - h (number) hue
           - s (number) saturation
           - l (number) luminosity
           = (object) RGB object in the following format:
           o {
           o     r (number) red,
           o     g (number) green,
           o     b (number) blue,
           o     hex (string) color in HTML/CSS format: #••••••
           o }
           \*/
          Snap.hsl2rgb = function (h, s, l, o) {
              if (is(h, "object") && "h" in h && "s" in h && "l" in h) {
                  l = h.l;
                  s = h.s;
                  h = h.h;
              }
              if (h > 1 || s > 1 || l > 1) {
                  h /= 360;
                  s /= 100;
                  l /= 100;
              }
              h *= 360;
              var R, G, B, X, C;
              h = (h % 360) / 60;
              C = 2 * s * (l < .5 ? l : 1 - l);
              X = C * (1 - abs(h % 2 - 1));
              R = G = B = l - C / 2;
  
              h = ~~h;
              R += [C, X, 0, 0, X, C][h];
              G += [X, C, C, X, 0, 0][h];
              B += [0, 0, X, C, C, X][h];
              return packageRGB(R, G, B, o);
          };
          /*\
           * Snap.rgb2hsb
           [ method ]
           **
           * Converts RGB values to an HSB object
           - r (number) red
           - g (number) green
           - b (number) blue
           = (object) HSB object in the following format:
           o {
           o     h (number) hue,
           o     s (number) saturation,
           o     b (number) brightness
           o }
           \*/
          Snap.rgb2hsb = function (r, g, b) {
              b = prepareRGB(r, g, b);
              r = b[0];
              g = b[1];
              b = b[2];
  
              var H, S, V, C;
              V = mmax(r, g, b);
              C = V - mmin(r, g, b);
              H = (C == 0 ? null :
                  V == r ? (g - b) / C :
                      V == g ? (b - r) / C + 2 :
                      (r - g) / C + 4
              );
              H = ((H + 360) % 6) * 60 / 360;
              S = C == 0 ? 0 : C / V;
              return {h: H, s: S, b: V, toString: hsbtoString};
          };
          /*\
           * Snap.rgb2hsl
           [ method ]
           **
           * Converts RGB values to an HSL object
           - r (number) red
           - g (number) green
           - b (number) blue
           = (object) HSL object in the following format:
           o {
           o     h (number) hue,
           o     s (number) saturation,
           o     l (number) luminosity
           o }
           \*/
          Snap.rgb2hsl = function (r, g, b) {
              b = prepareRGB(r, g, b);
              r = b[0];
              g = b[1];
              b = b[2];
  
              var H, S, L, M, m, C;
              M = mmax(r, g, b);
              m = mmin(r, g, b);
              C = M - m;
              H = (C == 0 ? null :
                  M == r ? (g - b) / C :
                      M == g ? (b - r) / C + 2 :
                      (r - g) / C + 4);
              H = ((H + 360) % 6) * 60 / 360;
              L = (M + m) / 2;
              S = (C == 0 ? 0 :
                  L < .5 ? C / (2 * L) :
                  C / (2 - 2 * L));
              return {h: H, s: S, l: L, toString: hsltoString};
          };
  
  // Transformations
  // SIERRA Snap.parsePathString(): By _array of arrays,_ I assume you mean a format like this for two separate segments? [ ["M10,10","L90,90"], ["M90,10","L10,90"] ] Otherwise how is each command structured?
          /*\
           * Snap.parsePathString
           [ method ]
           **
           * Utility method
           **
           * Parses given path string into an array of arrays of path segments
           - pathString (string|array) path string or array of segments (in the last case it is returned straight away)
           = (array) array of segments
           \*/
          Snap.parsePathString = function (pathString) {
              if (!pathString) {
                  return null;
              }
              var pth = Snap.path(pathString);
              if (pth.arr) {
                  return Snap.path.clone(pth.arr);
              }
  
              var paramCounts = {a: 7, c: 6, o: 2, h: 1, l: 2, m: 2, r: 4, q: 4, s: 4, t: 2, v: 1, u: 3, z: 0},
                  data = [];
              if (is(pathString, "array") && is(pathString[0], "array")) { // rough assumption
                  data = Snap.path.clone(pathString);
              }
              if (!data.length) {
                  Str(pathString).replace(pathCommand, function (a, b, c) {
                      var params = [],
                          name = b.toLowerCase();
                      c.replace(pathValues, function (a, b) {
                          b && params.push(+b);
                      });
                      if (name == "m" && params.length > 2) {
                          data.push([b].concat(params.splice(0, 2)));
                          name = "l";
                          b = b == "m" ? "l" : "L";
                      }
                      if (name == "o" && params.length == 1) {
                          data.push([b, params[0]]);
                      }
                      if (name == "r") {
                          data.push([b].concat(params));
                      } else while (params.length >= paramCounts[name]) {
                          data.push([b].concat(params.splice(0, paramCounts[name])));
                          if (!paramCounts[name]) {
                              break;
                          }
                      }
                  });
              }
              data.toString = Snap.path.toString;
              pth.arr = Snap.path.clone(data);
              return data;
          };
          /*\
           * Snap.parseTransformString
           [ method ]
           **
           * Utility method
           **
           * Parses given transform string into an array of transformations
           - TString (string|array) transform string or array of transformations (in the last case it is returned straight away)
           = (array) array of transformations
           \*/
          var parseTransformString = Snap.parseTransformString = function (TString) {
              if (!TString) {
                  return null;
              }
              var paramCounts = {r: 3, s: 4, t: 2, m: 6},
                  data = [];
              if (is(TString, "array") && is(TString[0], "array")) { // rough assumption
                  data = Snap.path.clone(TString);
              }
              if (!data.length) {
                  Str(TString).replace(tCommand, function (a, b, c) {
                      var params = [],
                          name = b.toLowerCase();
                      c.replace(pathValues, function (a, b) {
                          b && params.push(+b);
                      });
                      data.push([b].concat(params));
                  });
              }
              data.toString = Snap.path.toString;
              return data;
          };
          function svgTransform2string(tstr) {
              var res = [];
              tstr = tstr.replace(/(?:^|\s)(\w+)\(([^)]+)\)/g, function (all, name, params) {
                  params = params.split(/\s*,\s*|\s+/);
                  if (name == "rotate" && params.length == 1) {
                      params.push(0, 0);
                  }
                  if (name == "scale") {
                      if (params.length > 2) {
                          params = params.slice(0, 2);
                      } else if (params.length == 2) {
                          params.push(0, 0);
                      }
                      if (params.length == 1) {
                          params.push(params[0], 0, 0);
                      }
                  }
                  if (name == "skewX") {
                      res.push(["m", 1, 0, math.tan(rad(params[0])), 1, 0, 0]);
                  } else if (name == "skewY") {
                      res.push(["m", 1, math.tan(rad(params[0])), 0, 1, 0, 0]);
                  } else {
                      res.push([name.charAt(0)].concat(params));
                  }
                  return all;
              });
              return res;
          }
          Snap._.svgTransform2string = svgTransform2string;
          Snap._.rgTransform = /^[a-z][\s]*-?\.?\d/i;
          function transform2matrix(tstr, bbox) {
              var tdata = parseTransformString(tstr),
                  m = new Snap.Matrix;
              if (tdata) {
                  for (var i = 0, ii = tdata.length; i < ii; i++) {
                      var t = tdata[i],
                          tlen = t.length,
                          command = Str(t[0]).toLowerCase(),
                          absolute = t[0] != command,
                          inver = absolute ? m.invert() : 0,
                          x1,
                          y1,
                          x2,
                          y2,
                          bb;
                      if (command == "t" && tlen == 2){
                          m.translate(t[1], 0);
                      } else if (command == "t" && tlen == 3) {
                          if (absolute) {
                              x1 = inver.x(0, 0);
                              y1 = inver.y(0, 0);
                              x2 = inver.x(t[1], t[2]);
                              y2 = inver.y(t[1], t[2]);
                              m.translate(x2 - x1, y2 - y1);
                          } else {
                              m.translate(t[1], t[2]);
                          }
                      } else if (command == "r") {
                          if (tlen == 2) {
                              bb = bb || bbox;
                              m.rotate(t[1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                          } else if (tlen == 4) {
                              if (absolute) {
                                  x2 = inver.x(t[2], t[3]);
                                  y2 = inver.y(t[2], t[3]);
                                  m.rotate(t[1], x2, y2);
                              } else {
                                  m.rotate(t[1], t[2], t[3]);
                              }
                          }
                      } else if (command == "s") {
                          if (tlen == 2 || tlen == 3) {
                              bb = bb || bbox;
                              m.scale(t[1], t[tlen - 1], bb.x + bb.width / 2, bb.y + bb.height / 2);
                          } else if (tlen == 4) {
                              if (absolute) {
                                  x2 = inver.x(t[2], t[3]);
                                  y2 = inver.y(t[2], t[3]);
                                  m.scale(t[1], t[1], x2, y2);
                              } else {
                                  m.scale(t[1], t[1], t[2], t[3]);
                              }
                          } else if (tlen == 5) {
                              if (absolute) {
                                  x2 = inver.x(t[3], t[4]);
                                  y2 = inver.y(t[3], t[4]);
                                  m.scale(t[1], t[2], x2, y2);
                              } else {
                                  m.scale(t[1], t[2], t[3], t[4]);
                              }
                          }
                      } else if (command == "m" && tlen == 7) {
                          m.add(t[1], t[2], t[3], t[4], t[5], t[6]);
                      }
                  }
              }
              return m;
          }
          Snap._.transform2matrix = transform2matrix;
          Snap._unit2px = unit2px;
          var contains = glob.doc.contains || glob.doc.compareDocumentPosition ?
              function (a, b) {
                  var adown = a.nodeType == 9 ? a.documentElement : a,
                      bup = b && b.parentNode;
                  return a == bup || !!(bup && bup.nodeType == 1 && (
                          adown.contains ?
                              adown.contains(bup) :
                          a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16
                      ));
              } :
              function (a, b) {
                  if (b) {
                      while (b) {
                          b = b.parentNode;
                          if (b == a) {
                              return true;
                          }
                      }
                  }
                  return false;
              };
          function getSomeDefs(el) {
              var p = (el.node.ownerSVGElement && wrap(el.node.ownerSVGElement)) ||
                      (el.node.parentNode && wrap(el.node.parentNode)) ||
                      Snap.select("svg") ||
                      Snap(0, 0),
                  pdefs = p.select("defs"),
                  defs  = pdefs == null ? false : pdefs.node;
              if (!defs) {
                  defs = make("defs", p.node).node;
              }
              return defs;
          }
          function getSomeSVG(el) {
              return el.node.ownerSVGElement && wrap(el.node.ownerSVGElement) || Snap.select("svg");
          }
          Snap._.getSomeDefs = getSomeDefs;
          Snap._.getSomeSVG = getSomeSVG;
          function unit2px(el, name, value) {
              var svg = getSomeSVG(el).node,
                  out = {},
                  mgr = svg.querySelector(".svg---mgr");
              if (!mgr) {
                  mgr = $("rect");
                  $(mgr, {x: -9e9, y: -9e9, width: 10, height: 10, "class": "svg---mgr", fill: "none"});
                  svg.appendChild(mgr);
              }
              function getW(val) {
                  if (val == null) {
                      return E;
                  }
                  if (val == +val) {
                      return val;
                  }
                  $(mgr, {width: val});
                  try {
                      return mgr.getBBox().width;
                  } catch (e) {
                      return 0;
                  }
              }
              function getH(val) {
                  if (val == null) {
                      return E;
                  }
                  if (val == +val) {
                      return val;
                  }
                  $(mgr, {height: val});
                  try {
                      return mgr.getBBox().height;
                  } catch (e) {
                      return 0;
                  }
              }
              function set(nam, f) {
                  if (name == null) {
                      out[nam] = f(el.attr(nam) || 0);
                  } else if (nam == name) {
                      out = f(value == null ? el.attr(nam) || 0 : value);
                  }
              }
              switch (el.type) {
                  case "rect":
                      set("rx", getW);
                      set("ry", getH);
                  case "image":
                      set("width", getW);
                      set("height", getH);
                  case "text":
                      set("x", getW);
                      set("y", getH);
                      break;
                  case "circle":
                      set("cx", getW);
                      set("cy", getH);
                      set("r", getW);
                      break;
                  case "ellipse":
                      set("cx", getW);
                      set("cy", getH);
                      set("rx", getW);
                      set("ry", getH);
                      break;
                  case "line":
                      set("x1", getW);
                      set("x2", getW);
                      set("y1", getH);
                      set("y2", getH);
                      break;
                  case "marker":
                      set("refX", getW);
                      set("markerWidth", getW);
                      set("refY", getH);
                      set("markerHeight", getH);
                      break;
                  case "radialGradient":
                      set("fx", getW);
                      set("fy", getH);
                      break;
                  case "tspan":
                      set("dx", getW);
                      set("dy", getH);
                      break;
                  default:
                      set(name, getW);
              }
              svg.removeChild(mgr);
              return out;
          }
          /*\
           * Snap.select
           [ method ]
           **
           * Wraps a DOM element specified by CSS selector as @Element
           - query (string) CSS selector of the element
           = (Element) the current element
           \*/
          Snap.select = function (query) {
              query = Str(query).replace(/([^\\]):/g, "$1\\:");
              return wrap(glob.doc.querySelector(query));
          };
          /*\
           * Snap.selectAll
           [ method ]
           **
           * Wraps DOM elements specified by CSS selector as set or array of @Element
           - query (string) CSS selector of the element
           = (Element) the current element
           \*/
          Snap.selectAll = function (query) {
              var nodelist = glob.doc.querySelectorAll(query),
                  set = (Snap.set || Array)();
              for (var i = 0; i < nodelist.length; i++) {
                  set.push(wrap(nodelist[i]));
              }
              return set;
          };
  
          function add2group(list) {
              if (!is(list, "array")) {
                  list = Array.prototype.slice.call(arguments, 0);
              }
              var i = 0,
                  j = 0,
                  node = this.node;
              while (this[i]) delete this[i++];
              for (i = 0; i < list.length; i++) {
                  if (list[i].type == "set") {
                      list[i].forEach(function (el) {
                          node.appendChild(el.node);
                      });
                  } else {
                      node.appendChild(list[i].node);
                  }
              }
              var children = node.childNodes;
              for (i = 0; i < children.length; i++) {
                  this[j++] = wrap(children[i]);
              }
              return this;
          }
  // Hub garbage collector every 10s
          setInterval(function () {
              for (var key in hub) if (hub[has](key)) {
                  var el = hub[key],
                      node = el.node;
                  if (el.type != "svg" && !node.ownerSVGElement || el.type == "svg" && (!node.parentNode || "ownerSVGElement" in node.parentNode && !node.ownerSVGElement)) {
                      delete hub[key];
                  }
              }
          }, 1e4);
          function Element(el) {
              if (el.snap in hub) {
                  return hub[el.snap];
              }
              var svg;
              try {
                  svg = el.ownerSVGElement;
              } catch(e) {}
              /*\
               * Element.node
               [ property (object) ]
               **
               * Gives you a reference to the DOM object, so you can assign event handlers or just mess around.
               > Usage
               | // draw a circle at coordinate 10,10 with radius of 10
               | var c = paper.circle(10, 10, 10);
               | c.node.onclick = function () {
               |     c.attr("fill", "red");
               | };
               \*/
              this.node = el;
              if (svg) {
                  this.paper = new Paper(svg);
              }
              /*\
               * Element.type
               [ property (string) ]
               **
               * SVG tag name of the given element.
               \*/
              this.type = el.tagName || el.nodeName;
              var id = this.id = ID(this);
              this.anims = {};
              this._ = {
                  transform: []
              };
              el.snap = id;
              hub[id] = this;
              if (this.type == "g") {
                  this.add = add2group;
              }
              if (this.type in {g: 1, mask: 1, pattern: 1, symbol: 1}) {
                  for (var method in Paper.prototype) if (Paper.prototype[has](method)) {
                      this[method] = Paper.prototype[method];
                  }
              }
          }
          /*\
           * Element.attr
           [ method ]
           **
           * Gets or sets given attributes of the element.
           **
           - params (object) contains key-value pairs of attributes you want to set
           * or
           - param (string) name of the attribute
           = (Element) the current element
           * or
           = (string) value of attribute
           > Usage
           | el.attr({
           |     fill: "#fc0",
           |     stroke: "#000",
           |     strokeWidth: 2, // CamelCase...
           |     "fill-opacity": 0.5, // or dash-separated names
           |     width: "*=2" // prefixed values
           | });
           | console.log(el.attr("fill")); // #fc0
           * Prefixed values in format `"+=10"` supported. All four operations
           * (`+`, `-`, `*` and `/`) could be used. Optionally you can use units for `+`
           * and `-`: `"+=2em"`.
           \*/
          Element.prototype.attr = function (params, value) {
              var el = this,
                  node = el.node;
              if (!params) {
                  if (node.nodeType != 1) {
                      return {
                          text: node.nodeValue
                      };
                  }
                  var attr = node.attributes,
                      out = {};
                  for (var i = 0, ii = attr.length; i < ii; i++) {
                      out[attr[i].nodeName] = attr[i].nodeValue;
                  }
                  return out;
              }
              if (is(params, "string")) {
                  if (arguments.length > 1) {
                      var json = {};
                      json[params] = value;
                      params = json;
                  } else {
                      return eve("snap.util.getattr." + params, el).firstDefined();
                  }
              }
              for (var att in params) {
                  if (params[has](att)) {
                      eve("snap.util.attr." + att, el, params[att]);
                  }
              }
              return el;
          };
          /*\
           * Snap.parse
           [ method ]
           **
           * Parses SVG fragment and converts it into a @Fragment
           **
           - svg (string) SVG string
           = (Fragment) the @Fragment
           \*/
          Snap.parse = function (svg) {
              var f = glob.doc.createDocumentFragment(),
                  full = true,
                  div = glob.doc.createElement("div");
              svg = Str(svg);
              if (!svg.match(/^\s*<\s*svg(?:\s|>)/)) {
                  svg = "<svg>" + svg + "</svg>";
                  full = false;
              }
              div.innerHTML = svg;
              svg = div.getElementsByTagName("svg")[0];
              if (svg) {
                  if (full) {
                      f = svg;
                  } else {
                      while (svg.firstChild) {
                          f.appendChild(svg.firstChild);
                      }
                      div.innerHTML = E;
                  }
              }
              return new Fragment(f);
          };
          function Fragment(frag) {
              this.node = frag;
          }
  // SIERRA Snap.fragment() could especially use a code example
          /*\
           * Snap.fragment
           [ method ]
           **
           * Creates a DOM fragment from a given list of elements or strings
           **
           - varargs (…) SVG string
           = (Fragment) the @Fragment
           \*/
          Snap.fragment = function () {
              var args = Array.prototype.slice.call(arguments, 0),
                  f = glob.doc.createDocumentFragment();
              for (var i = 0, ii = args.length; i < ii; i++) {
                  var item = args[i];
                  if (item.node && item.node.nodeType) {
                      f.appendChild(item.node);
                  }
                  if (item.nodeType) {
                      f.appendChild(item);
                  }
                  if (typeof item == "string") {
                      f.appendChild(Snap.parse(item).node);
                  }
              }
              return new Fragment(f);
          };
  
          function make(name, parent) {
              var res = $(name);
              parent.appendChild(res);
              var el = wrap(res);
              return el;
          }
          function Paper(w, h) {
              var res,
                  desc,
                  defs,
                  proto = Paper.prototype;
              if (w && w.tagName == "svg") {
                  if (w.snap in hub) {
                      return hub[w.snap];
                  }
                  var doc = w.ownerDocument;
                  res = new Element(w);
                  desc = w.getElementsByTagName("desc")[0];
                  defs = w.getElementsByTagName("defs")[0];
                  if (!desc) {
                      desc = $("desc");
                      desc.appendChild(doc.createTextNode("Created with Snap"));
                      res.node.appendChild(desc);
                  }
                  if (!defs) {
                      defs = $("defs");
                      res.node.appendChild(defs);
                  }
                  res.defs = defs;
                  for (var key in proto) if (proto[has](key)) {
                      res[key] = proto[key];
                  }
                  res.paper = res.root = res;
              } else {
                  res = make("svg", glob.doc.body);
                  $(res.node, {
                      height: h,
                      version: 1.1,
                      width: w,
                      xmlns: xmlns
                  });
              }
              return res;
          }
          function wrap(dom) {
              if (!dom) {
                  return dom;
              }
              if (dom instanceof Element || dom instanceof Fragment) {
                  return dom;
              }
              if (dom.tagName && dom.tagName.toLowerCase() == "svg") {
                  return new Paper(dom);
              }
              if (dom.tagName && dom.tagName.toLowerCase() == "object" && dom.type == "image/svg+xml") {
                  return new Paper(dom.contentDocument.getElementsByTagName("svg")[0]);
              }
              return new Element(dom);
          }
  
          Snap._.make = make;
          Snap._.wrap = wrap;
          /*\
           * Paper.el
           [ method ]
           **
           * Creates an element on paper with a given name and no attributes
           **
           - name (string) tag name
           - attr (object) attributes
           = (Element) the current element
           > Usage
           | var c = paper.circle(10, 10, 10); // is the same as...
           | var c = paper.el("circle").attr({
           |     cx: 10,
           |     cy: 10,
           |     r: 10
           | });
           | // and the same as
           | var c = paper.el("circle", {
           |     cx: 10,
           |     cy: 10,
           |     r: 10
           | });
           \*/
          Paper.prototype.el = function (name, attr) {
              var el = make(name, this.node);
              attr && el.attr(attr);
              return el;
          };
          /*\
           * Element.children
           [ method ]
           **
           * Returns array of all the children of the element.
           = (array) array of Elements
           \*/
          Element.prototype.children = function () {
              var out = [],
                  ch = this.node.childNodes;
              for (var i = 0, ii = ch.length; i < ii; i++) {
                  out[i] = Snap(ch[i]);
              }
              return out;
          };
          function jsonFiller(root, o) {
              for (var i = 0, ii = root.length; i < ii; i++) {
                  var item = {
                          type: root[i].type,
                          attr: root[i].attr()
                      },
                      children = root[i].children();
                  o.push(item);
                  if (children.length) {
                      jsonFiller(children, item.childNodes = []);
                  }
              }
          }
          /*\
           * Element.toJSON
           [ method ]
           **
           * Returns object representation of the given element and all its children.
           = (object) in format
           o {
           o     type (string) this.type,
           o     attr (object) attributes map,
           o     childNodes (array) optional array of children in the same format
           o }
           \*/
          Element.prototype.toJSON = function () {
              var out = [];
              jsonFiller([this], out);
              return out[0];
          };
  // default
          eve.on("snap.util.getattr", function () {
              var att = eve.nt();
              att = att.substring(att.lastIndexOf(".") + 1);
              var css = att.replace(/[A-Z]/g, function (letter) {
                  return "-" + letter.toLowerCase();
              });
              if (cssAttr[has](css)) {
                  return this.node.ownerDocument.defaultView.getComputedStyle(this.node, null).getPropertyValue(css);
              } else {
                  return $(this.node, att);
              }
          });
          var cssAttr = {
              "alignment-baseline": 0,
              "baseline-shift": 0,
              "clip": 0,
              "clip-path": 0,
              "clip-rule": 0,
              "color": 0,
              "color-interpolation": 0,
              "color-interpolation-filters": 0,
              "color-profile": 0,
              "color-rendering": 0,
              "cursor": 0,
              "direction": 0,
              "display": 0,
              "dominant-baseline": 0,
              "enable-background": 0,
              "fill": 0,
              "fill-opacity": 0,
              "fill-rule": 0,
              "filter": 0,
              "flood-color": 0,
              "flood-opacity": 0,
              "font": 0,
              "font-family": 0,
              "font-size": 0,
              "font-size-adjust": 0,
              "font-stretch": 0,
              "font-style": 0,
              "font-variant": 0,
              "font-weight": 0,
              "glyph-orientation-horizontal": 0,
              "glyph-orientation-vertical": 0,
              "image-rendering": 0,
              "kerning": 0,
              "letter-spacing": 0,
              "lighting-color": 0,
              "marker": 0,
              "marker-end": 0,
              "marker-mid": 0,
              "marker-start": 0,
              "mask": 0,
              "opacity": 0,
              "overflow": 0,
              "pointer-events": 0,
              "shape-rendering": 0,
              "stop-color": 0,
              "stop-opacity": 0,
              "stroke": 0,
              "stroke-dasharray": 0,
              "stroke-dashoffset": 0,
              "stroke-linecap": 0,
              "stroke-linejoin": 0,
              "stroke-miterlimit": 0,
              "stroke-opacity": 0,
              "stroke-width": 0,
              "text-anchor": 0,
              "text-decoration": 0,
              "text-rendering": 0,
              "unicode-bidi": 0,
              "visibility": 0,
              "word-spacing": 0,
              "writing-mode": 0
          };
  
          eve.on("snap.util.attr", function (value) {
              var att = eve.nt(),
                  attr = {};
              att = att.substring(att.lastIndexOf(".") + 1);
              attr[att] = value;
              var style = att.replace(/-(\w)/gi, function (all, letter) {
                      return letter.toUpperCase();
                  }),
                  css = att.replace(/[A-Z]/g, function (letter) {
                      return "-" + letter.toLowerCase();
                  });
              if (cssAttr[has](css)) {
                  this.node.style[style] = value == null ? E : value;
              } else {
                  $(this.node, attr);
              }
          });
          (function (proto) {}(Paper.prototype));
  
  // simple ajax
          /*\
           * Snap.ajax
           [ method ]
           **
           * Simple implementation of Ajax
           **
           - url (string) URL
           - postData (object|string) data for post request
           - callback (function) callback
           - scope (object) #optional scope of callback
           * or
           - url (string) URL
           - callback (function) callback
           - scope (object) #optional scope of callback
           = (XMLHttpRequest) the XMLHttpRequest object, just in case
           \*/
          Snap.ajax = function (url, postData, callback, scope){
              var req = new XMLHttpRequest,
                  id = ID();
              if (req) {
                  if (is(postData, "function")) {
                      scope = callback;
                      callback = postData;
                      postData = null;
                  } else if (is(postData, "object")) {
                      var pd = [];
                      for (var key in postData) if (postData.hasOwnProperty(key)) {
                          pd.push(encodeURIComponent(key) + "=" + encodeURIComponent(postData[key]));
                      }
                      postData = pd.join("&");
                  }
                  req.open((postData ? "POST" : "GET"), url, true);
                  if (postData) {
                      req.setRequestHeader("X-Requested-With", "XMLHttpRequest");
                      req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
                  }
                  if (callback) {
                      eve.once("snap.ajax." + id + ".0", callback);
                      eve.once("snap.ajax." + id + ".200", callback);
                      eve.once("snap.ajax." + id + ".304", callback);
                  }
                  req.onreadystatechange = function() {
                      if (req.readyState != 4) return;
                      eve("snap.ajax." + id + "." + req.status, scope, req);
                  };
                  if (req.readyState == 4) {
                      return req;
                  }
                  req.send(postData);
                  return req;
              }
          };
          /*\
           * Snap.load
           [ method ]
           **
           * Loads external SVG file as a @Fragment (see @Snap.ajax for more advanced AJAX)
           **
           - url (string) URL
           - callback (function) callback
           - scope (object) #optional scope of callback
           \*/
          Snap.load = function (url, callback, scope) {
              Snap.ajax(url, function (req) {
                  var f = Snap.parse(req.responseText);
                  scope ? callback.call(scope, f) : callback(f);
              });
          };
          var getOffset = function (elem) {
              var box = elem.getBoundingClientRect(),
                  doc = elem.ownerDocument,
                  body = doc.body,
                  docElem = doc.documentElement,
                  clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
                  top  = box.top  + (g.win.pageYOffset || docElem.scrollTop || body.scrollTop ) - clientTop,
                  left = box.left + (g.win.pageXOffset || docElem.scrollLeft || body.scrollLeft) - clientLeft;
              return {
                  y: top,
                  x: left
              };
          };
          /*\
           * Snap.getElementByPoint
           [ method ]
           **
           * Returns you topmost element under given point.
           **
           = (object) Snap element object
           - x (number) x coordinate from the top left corner of the window
           - y (number) y coordinate from the top left corner of the window
           > Usage
           | Snap.getElementByPoint(mouseX, mouseY).attr({stroke: "#f00"});
           \*/
          Snap.getElementByPoint = function (x, y) {
              var paper = this,
                  svg = paper.canvas,
                  target = glob.doc.elementFromPoint(x, y);
              if (glob.win.opera && target.tagName == "svg") {
                  var so = getOffset(target),
                      sr = target.createSVGRect();
                  sr.x = x - so.x;
                  sr.y = y - so.y;
                  sr.width = sr.height = 1;
                  var hits = target.getIntersectionList(sr, null);
                  if (hits.length) {
                      target = hits[hits.length - 1];
                  }
              }
              if (!target) {
                  return null;
              }
              return wrap(target);
          };
          /*\
           * Snap.plugin
           [ method ]
           **
           * Let you write plugins. You pass in a function with five arguments, like this:
           | Snap.plugin(function (Snap, Element, Paper, global, Fragment) {
           |     Snap.newmethod = function () {};
           |     Element.prototype.newmethod = function () {};
           |     Paper.prototype.newmethod = function () {};
           | });
           * Inside the function you have access to all main objects (and their
           * prototypes). This allow you to extend anything you want.
           **
           - f (function) your plugin body
           \*/
          Snap.plugin = function (f) {
              f(Snap, Element, Paper, glob, Fragment);
          };
          glob.win.Snap = Snap;
          return Snap;
      }(window || this));
  
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  // http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
          var elproto = Element.prototype,
              is = Snap.is,
              Str = String,
              unit2px = Snap._unit2px,
              $ = Snap._.$,
              make = Snap._.make,
              getSomeDefs = Snap._.getSomeDefs,
              has = "hasOwnProperty",
              wrap = Snap._.wrap;
          /*\
           * Element.getBBox
           [ method ]
           **
           * Returns the bounding box descriptor for the given element
           **
           = (object) bounding box descriptor:
           o {
           o     cx: (number) x of the center,
           o     cy: (number) x of the center,
           o     h: (number) height,
           o     height: (number) height,
           o     path: (string) path command for the box,
           o     r0: (number) radius of a circle that fully encloses the box,
           o     r1: (number) radius of the smallest circle that can be enclosed,
           o     r2: (number) radius of the largest circle that can be enclosed,
           o     vb: (string) box as a viewbox command,
           o     w: (number) width,
           o     width: (number) width,
           o     x2: (number) x of the right side,
           o     x: (number) x of the left side,
           o     y2: (number) y of the bottom edge,
           o     y: (number) y of the top edge
           o }
           \*/
          elproto.getBBox = function (isWithoutTransform) {
              if (!Snap.Matrix || !Snap.path) {
                  return this.node.getBBox();
              }
              var el = this,
                  m = new Snap.Matrix;
              if (el.removed) {
                  return Snap._.box();
              }
              while (el.type == "use") {
                  if (!isWithoutTransform) {
                      m = m.add(el.transform().localMatrix.translate(el.attr("x") || 0, el.attr("y") || 0));
                  }
                  if (el.original) {
                      el = el.original;
                  } else {
                      var href = el.attr("xlink:href");
                      el = el.original = el.node.ownerDocument.getElementById(href.substring(href.indexOf("#") + 1));
                  }
              }
              var _ = el._,
                  pathfinder = Snap.path.get[el.type] || Snap.path.get.deflt;
              try {
                  if (isWithoutTransform) {
                      _.bboxwt = pathfinder ? Snap.path.getBBox(el.realPath = pathfinder(el)) : Snap._.box(el.node.getBBox());
                      return Snap._.box(_.bboxwt);
                  } else {
                      el.realPath = pathfinder(el);
                      el.matrix = el.transform().localMatrix;
                      _.bbox = Snap.path.getBBox(Snap.path.map(el.realPath, m.add(el.matrix)));
                      return Snap._.box(_.bbox);
                  }
              } catch (e) {
                  // Firefox doesn’t give you bbox of hidden element
                  return Snap._.box();
              }
          };
          var propString = function () {
              return this.string;
          };
          function extractTransform(el, tstr) {
              if (tstr == null) {
                  var doReturn = true;
                  if (el.type == "linearGradient" || el.type == "radialGradient") {
                      tstr = el.node.getAttribute("gradientTransform");
                  } else if (el.type == "pattern") {
                      tstr = el.node.getAttribute("patternTransform");
                  } else {
                      tstr = el.node.getAttribute("transform");
                  }
                  if (!tstr) {
                      return new Snap.Matrix;
                  }
                  tstr = Snap._.svgTransform2string(tstr);
              } else {
                  if (!Snap._.rgTransform.test(tstr)) {
                      tstr = Snap._.svgTransform2string(tstr);
                  } else {
                      tstr = Str(tstr).replace(/\.{3}|\u2026/g, el._.transform || E);
                  }
                  if (is(tstr, "array")) {
                      tstr = Snap.path ? Snap.path.toString.call(tstr) : Str(tstr);
                  }
                  el._.transform = tstr;
              }
              var m = Snap._.transform2matrix(tstr, el.getBBox(1));
              if (doReturn) {
                  return m;
              } else {
                  el.matrix = m;
              }
          }
          /*\
           * Element.transform
           [ method ]
           **
           * Gets or sets transformation of the element
           **
           - tstr (string) transform string in Snap or SVG format
           = (Element) the current element
           * or
           = (object) transformation descriptor:
           o {
           o     string (string) transform string,
           o     globalMatrix (Matrix) matrix of all transformations applied to element or its parents,
           o     localMatrix (Matrix) matrix of transformations applied only to the element,
           o     diffMatrix (Matrix) matrix of difference between global and local transformations,
           o     global (string) global transformation as string,
           o     local (string) local transformation as string,
           o     toString (function) returns `string` property
           o }
           \*/
          elproto.transform = function (tstr) {
              var _ = this._;
              if (tstr == null) {
                  var papa = this,
                      global = new Snap.Matrix(this.node.getCTM()),
                      local = extractTransform(this),
                      ms = [local],
                      m = new Snap.Matrix,
                      i,
                      localString = local.toTransformString(),
                      string = Str(local) == Str(this.matrix) ?
                          Str(_.transform) : localString;
                  while (papa.type != "svg" && (papa = papa.parent())) {
                      ms.push(extractTransform(papa));
                  }
                  i = ms.length;
                  while (i--) {
                      m.add(ms[i]);
                  }
                  return {
                      string: string,
                      globalMatrix: global,
                      totalMatrix: m,
                      localMatrix: local,
                      diffMatrix: global.clone().add(local.invert()),
                      global: global.toTransformString(),
                      total: m.toTransformString(),
                      local: localString,
                      toString: propString
                  };
              }
              if (tstr instanceof Snap.Matrix) {
                  this.matrix = tstr;
                  this._.transform = tstr.toTransformString();
              } else {
                  extractTransform(this, tstr);
              }
  
              if (this.node) {
                  if (this.type == "linearGradient" || this.type == "radialGradient") {
                      $(this.node, {gradientTransform: this.matrix});
                  } else if (this.type == "pattern") {
                      $(this.node, {patternTransform: this.matrix});
                  } else {
                      $(this.node, {transform: this.matrix});
                  }
              }
  
              return this;
          };
          /*\
           * Element.parent
           [ method ]
           **
           * Returns the element's parent
           **
           = (Element) the parent element
           \*/
          elproto.parent = function () {
              return wrap(this.node.parentNode);
          };
          /*\
           * Element.append
           [ method ]
           **
           * Appends the given element to current one
           **
           - el (Element|Set) element to append
           = (Element) the parent element
           \*/
          /*\
           * Element.add
           [ method ]
           **
           * See @Element.append
           \*/
          elproto.append = elproto.add = function (el) {
              if (el) {
                  if (el.type == "set") {
                      var it = this;
                      el.forEach(function (el) {
                          it.add(el);
                      });
                      return this;
                  }
                  el = wrap(el);
                  this.node.appendChild(el.node);
                  el.paper = this.paper;
              }
              return this;
          };
          /*\
           * Element.appendTo
           [ method ]
           **
           * Appends the current element to the given one
           **
           - el (Element) parent element to append to
           = (Element) the child element
           \*/
          elproto.appendTo = function (el) {
              if (el) {
                  el = wrap(el);
                  el.append(this);
              }
              return this;
          };
          /*\
           * Element.prepend
           [ method ]
           **
           * Prepends the given element to the current one
           **
           - el (Element) element to prepend
           = (Element) the parent element
           \*/
          elproto.prepend = function (el) {
              if (el) {
                  if (el.type == "set") {
                      var it = this,
                          first;
                      el.forEach(function (el) {
                          if (first) {
                              first.after(el);
                          } else {
                              it.prepend(el);
                          }
                          first = el;
                      });
                      return this;
                  }
                  el = wrap(el);
                  var parent = el.parent();
                  this.node.insertBefore(el.node, this.node.firstChild);
                  this.add && this.add();
                  el.paper = this.paper;
                  this.parent() && this.parent().add();
                  parent && parent.add();
              }
              return this;
          };
          /*\
           * Element.prependTo
           [ method ]
           **
           * Prepends the current element to the given one
           **
           - el (Element) parent element to prepend to
           = (Element) the child element
           \*/
          elproto.prependTo = function (el) {
              el = wrap(el);
              el.prepend(this);
              return this;
          };
          /*\
           * Element.before
           [ method ]
           **
           * Inserts given element before the current one
           **
           - el (Element) element to insert
           = (Element) the parent element
           \*/
          elproto.before = function (el) {
              if (el.type == "set") {
                  var it = this;
                  el.forEach(function (el) {
                      var parent = el.parent();
                      it.node.parentNode.insertBefore(el.node, it.node);
                      parent && parent.add();
                  });
                  this.parent().add();
                  return this;
              }
              el = wrap(el);
              var parent = el.parent();
              this.node.parentNode.insertBefore(el.node, this.node);
              this.parent() && this.parent().add();
              parent && parent.add();
              el.paper = this.paper;
              return this;
          };
          /*\
           * Element.after
           [ method ]
           **
           * Inserts given element after the current one
           **
           - el (Element) element to insert
           = (Element) the parent element
           \*/
          elproto.after = function (el) {
              el = wrap(el);
              var parent = el.parent();
              if (this.node.nextSibling) {
                  this.node.parentNode.insertBefore(el.node, this.node.nextSibling);
              } else {
                  this.node.parentNode.appendChild(el.node);
              }
              this.parent() && this.parent().add();
              parent && parent.add();
              el.paper = this.paper;
              return this;
          };
          /*\
           * Element.insertBefore
           [ method ]
           **
           * Inserts the element after the given one
           **
           - el (Element) element next to whom insert to
           = (Element) the parent element
           \*/
          elproto.insertBefore = function (el) {
              el = wrap(el);
              var parent = this.parent();
              el.node.parentNode.insertBefore(this.node, el.node);
              this.paper = el.paper;
              parent && parent.add();
              el.parent() && el.parent().add();
              return this;
          };
          /*\
           * Element.insertAfter
           [ method ]
           **
           * Inserts the element after the given one
           **
           - el (Element) element next to whom insert to
           = (Element) the parent element
           \*/
          elproto.insertAfter = function (el) {
              el = wrap(el);
              var parent = this.parent();
              el.node.parentNode.insertBefore(this.node, el.node.nextSibling);
              this.paper = el.paper;
              parent && parent.add();
              el.parent() && el.parent().add();
              return this;
          };
          /*\
           * Element.remove
           [ method ]
           **
           * Removes element from the DOM
           = (Element) the detached element
           \*/
          elproto.remove = function () {
              var parent = this.parent();
              this.node.parentNode && this.node.parentNode.removeChild(this.node);
              delete this.paper;
              this.removed = true;
              parent && parent.add();
              return this;
          };
          /*\
           * Element.select
           [ method ]
           **
           * Gathers the nested @Element matching the given set of CSS selectors
           **
           - query (string) CSS selector
           = (Element) result of query selection
           \*/
          elproto.select = function (query) {
              query = Str(query).replace(/([^\\]):/g, "$1\\:");
              return wrap(this.node.querySelector(query));
          };
          /*\
           * Element.selectAll
           [ method ]
           **
           * Gathers nested @Element objects matching the given set of CSS selectors
           **
           - query (string) CSS selector
           = (Set|array) result of query selection
           \*/
          elproto.selectAll = function (query) {
              var nodelist = this.node.querySelectorAll(query),
                  set = (Snap.set || Array)();
              for (var i = 0; i < nodelist.length; i++) {
                  set.push(wrap(nodelist[i]));
              }
              return set;
          };
          /*\
           * Element.asPX
           [ method ]
           **
           * Returns given attribute of the element as a `px` value (not %, em, etc.)
           **
           - attr (string) attribute name
           - value (string) #optional attribute value
           = (Element) result of query selection
           \*/
          elproto.asPX = function (attr, value) {
              if (value == null) {
                  value = this.attr(attr);
              }
              return +unit2px(this, attr, value);
          };
          // SIERRA Element.use(): I suggest adding a note about how to access the original element the returned <use> instantiates. It's a part of SVG with which ordinary web developers may be least familiar.
          /*\
           * Element.use
           [ method ]
           **
           * Creates a `<use>` element linked to the current element
           **
           = (Element) the `<use>` element
           \*/
          elproto.use = function () {
              var use,
                  id = this.node.id;
              if (!id) {
                  id = this.id;
                  $(this.node, {
                      id: id
                  });
              }
              if (this.type == "linearGradient" || this.type == "radialGradient" ||
                  this.type == "pattern") {
                  use = make(this.type, this.node.parentNode);
              } else {
                  use = make("use", this.node.parentNode);
              }
              $(use.node, {
                  "xlink:href": "#" + id
              });
              use.original = this;
              return use;
          };
          function fixids(el) {
              var els = el.selectAll("*"),
                  it,
                  url = /^\s*url\(("|'|)(.*)\1\)\s*$/,
                  ids = [],
                  uses = {};
              function urltest(it, name) {
                  var val = $(it.node, name);
                  val = val && val.match(url);
                  val = val && val[2];
                  if (val && val.charAt() == "#") {
                      val = val.substring(1);
                  } else {
                      return;
                  }
                  if (val) {
                      uses[val] = (uses[val] || []).concat(function (id) {
                          var attr = {};
                          attr[name] = URL(id);
                          $(it.node, attr);
                      });
                  }
              }
              function linktest(it) {
                  var val = $(it.node, "xlink:href");
                  if (val && val.charAt() == "#") {
                      val = val.substring(1);
                  } else {
                      return;
                  }
                  if (val) {
                      uses[val] = (uses[val] || []).concat(function (id) {
                          it.attr("xlink:href", "#" + id);
                      });
                  }
              }
              for (var i = 0, ii = els.length; i < ii; i++) {
                  it = els[i];
                  urltest(it, "fill");
                  urltest(it, "stroke");
                  urltest(it, "filter");
                  urltest(it, "mask");
                  urltest(it, "clip-path");
                  linktest(it);
                  var oldid = $(it.node, "id");
                  if (oldid) {
                      $(it.node, {id: it.id});
                      ids.push({
                          old: oldid,
                          id: it.id
                      });
                  }
              }
              for (i = 0, ii = ids.length; i < ii; i++) {
                  var fs = uses[ids[i].old];
                  if (fs) {
                      for (var j = 0, jj = fs.length; j < jj; j++) {
                          fs[j](ids[i].id);
                      }
                  }
              }
          }
          /*\
           * Element.clone
           [ method ]
           **
           * Creates a clone of the element and inserts it after the element
           **
           = (Element) the clone
           \*/
          elproto.clone = function () {
              var clone = wrap(this.node.cloneNode(true));
              if ($(clone.node, "id")) {
                  $(clone.node, {id: clone.id});
              }
              fixids(clone);
              clone.insertAfter(this);
              return clone;
          };
          /*\
           * Element.toDefs
           [ method ]
           **
           * Moves element to the shared `<defs>` area
           **
           = (Element) the element
           \*/
          elproto.toDefs = function () {
              var defs = getSomeDefs(this);
              defs.appendChild(this.node);
              return this;
          };
          /*\
           * Element.toPattern
           [ method ]
           **
           * Creates a `<pattern>` element from the current element
           **
           * To create a pattern you have to specify the pattern rect:
           - x (string|number)
           - y (string|number)
           - width (string|number)
           - height (string|number)
           = (Element) the `<pattern>` element
           * You can use pattern later on as an argument for `fill` attribute:
           | var p = paper.path("M10-5-10,15M15,0,0,15M0-5-20,15").attr({
           |         fill: "none",
           |         stroke: "#bada55",
           |         strokeWidth: 5
           |     }).pattern(0, 0, 10, 10),
           |     c = paper.circle(200, 200, 100);
           | c.attr({
           |     fill: p
           | });
           \*/
          elproto.pattern = elproto.toPattern = function (x, y, width, height) {
              var p = make("pattern", getSomeDefs(this));
              if (x == null) {
                  x = this.getBBox();
              }
              if (is(x, "object") && "x" in x) {
                  y = x.y;
                  width = x.width;
                  height = x.height;
                  x = x.x;
              }
              $(p.node, {
                  x: x,
                  y: y,
                  width: width,
                  height: height,
                  patternUnits: "userSpaceOnUse",
                  id: p.id,
                  viewBox: [x, y, width, height].join(" ")
              });
              p.node.appendChild(this.node);
              return p;
          };
  // SIERRA Element.marker(): clarify what a reference point is. E.g., helps you offset the object from its edge such as when centering it over a path.
  // SIERRA Element.marker(): I suggest the method should accept default reference point values.  Perhaps centered with (refX = width/2) and (refY = height/2)? Also, couldn't it assume the element's current _width_ and _height_? And please specify what _x_ and _y_ mean: offsets? If so, from where?  Couldn't they also be assigned default values?
          /*\
           * Element.marker
           [ method ]
           **
           * Creates a `<marker>` element from the current element
           **
           * To create a marker you have to specify the bounding rect and reference point:
           - x (number)
           - y (number)
           - width (number)
           - height (number)
           - refX (number)
           - refY (number)
           = (Element) the `<marker>` element
           * You can specify the marker later as an argument for `marker-start`, `marker-end`, `marker-mid`, and `marker` attributes. The `marker` attribute places the marker at every point along the path, and `marker-mid` places them at every point except the start and end.
           \*/
          // TODO add usage for markers
          elproto.marker = function (x, y, width, height, refX, refY) {
              var p = make("marker", getSomeDefs(this));
              if (x == null) {
                  x = this.getBBox();
              }
              if (is(x, "object") && "x" in x) {
                  y = x.y;
                  width = x.width;
                  height = x.height;
                  refX = x.refX || x.cx;
                  refY = x.refY || x.cy;
                  x = x.x;
              }
              $(p.node, {
                  viewBox: [x, y, width, height].join(" "),
                  markerWidth: width,
                  markerHeight: height,
                  orient: "auto",
                  refX: refX || 0,
                  refY: refY || 0,
                  id: p.id
              });
              p.node.appendChild(this.node);
              return p;
          };
          // animation
          function slice(from, to, f) {
              return function (arr) {
                  var res = arr.slice(from, to);
                  if (res.length == 1) {
                      res = res[0];
                  }
                  return f ? f(res) : res;
              };
          }
          var Animation = function (attr, ms, easing, callback) {
              if (typeof easing == "function" && !easing.length) {
                  callback = easing;
                  easing = mina.linear;
              }
              this.attr = attr;
              this.dur = ms;
              easing && (this.easing = easing);
              callback && (this.callback = callback);
          };
          Snap._.Animation = Animation;
          /*\
           * Snap.animation
           [ method ]
           **
           * Creates an animation object
           **
           - attr (object) attributes of final destination
           - duration (number) duration of the animation, in milliseconds
           - easing (function) #optional one of easing functions of @mina or custom one
           - callback (function) #optional callback function that fires when animation ends
           = (object) animation object
           \*/
          Snap.animation = function (attr, ms, easing, callback) {
              return new Animation(attr, ms, easing, callback);
          };
          /*\
           * Element.inAnim
           [ method ]
           **
           * Returns a set of animations that may be able to manipulate the current element
           **
           = (object) in format:
           o {
           o     anim (object) animation object,
           o     mina (object) @mina object,
           o     curStatus (number) 0..1 — status of the animation: 0 — just started, 1 — just finished,
           o     status (function) gets or sets the status of the animation,
           o     stop (function) stops the animation
           o }
           \*/
          elproto.inAnim = function () {
              var el = this,
                  res = [];
              for (var id in el.anims) if (el.anims[has](id)) {
                  (function (a) {
                      res.push({
                          anim: new Animation(a._attrs, a.dur, a.easing, a._callback),
                          mina: a,
                          curStatus: a.status(),
                          status: function (val) {
                              return a.status(val);
                          },
                          stop: function () {
                              a.stop();
                          }
                      });
                  }(el.anims[id]));
              }
              return res;
          };
          /*\
           * Snap.animate
           [ method ]
           **
           * Runs generic animation of one number into another with a caring function
           **
           - from (number|array) number or array of numbers
           - to (number|array) number or array of numbers
           - setter (function) caring function that accepts one number argument
           - duration (number) duration, in milliseconds
           - easing (function) #optional easing function from @mina or custom
           - callback (function) #optional callback function to execute when animation ends
           = (object) animation object in @mina format
           o {
           o     id (string) animation id, consider it read-only,
           o     duration (function) gets or sets the duration of the animation,
           o     easing (function) easing,
           o     speed (function) gets or sets the speed of the animation,
           o     status (function) gets or sets the status of the animation,
           o     stop (function) stops the animation
           o }
           | var rect = Snap().rect(0, 0, 10, 10);
           | Snap.animate(0, 10, function (val) {
           |     rect.attr({
           |         x: val
           |     });
           | }, 1000);
           | // in given context is equivalent to
           | rect.animate({x: 10}, 1000);
           \*/
          Snap.animate = function (from, to, setter, ms, easing, callback) {
              if (typeof easing == "function" && !easing.length) {
                  callback = easing;
                  easing = mina.linear;
              }
              var now = mina.time(),
                  anim = mina(from, to, now, now + ms, mina.time, setter, easing);
              callback && eve.once("mina.finish." + anim.id, callback);
              return anim;
          };
          /*\
           * Element.stop
           [ method ]
           **
           * Stops all the animations for the current element
           **
           = (Element) the current element
           \*/
          elproto.stop = function () {
              var anims = this.inAnim();
              for (var i = 0, ii = anims.length; i < ii; i++) {
                  anims[i].stop();
              }
              return this;
          };
          /*\
           * Element.animate
           [ method ]
           **
           * Animates the given attributes of the element
           **
           - attrs (object) key-value pairs of destination attributes
           - duration (number) duration of the animation in milliseconds
           - easing (function) #optional easing function from @mina or custom
           - callback (function) #optional callback function that executes when the animation ends
           = (Element) the current element
           \*/
          elproto.animate = function (attrs, ms, easing, callback) {
              if (typeof easing == "function" && !easing.length) {
                  callback = easing;
                  easing = mina.linear;
              }
              if (attrs instanceof Animation) {
                  callback = attrs.callback;
                  easing = attrs.easing;
                  ms = easing.dur;
                  attrs = attrs.attr;
              }
              var fkeys = [], tkeys = [], keys = {}, from, to, f, eq,
                  el = this;
              for (var key in attrs) if (attrs[has](key)) {
                  if (el.equal) {
                      eq = el.equal(key, Str(attrs[key]));
                      from = eq.from;
                      to = eq.to;
                      f = eq.f;
                  } else {
                      from = +el.attr(key);
                      to = +attrs[key];
                  }
                  var len = is(from, "array") ? from.length : 1;
                  keys[key] = slice(fkeys.length, fkeys.length + len, f);
                  fkeys = fkeys.concat(from);
                  tkeys = tkeys.concat(to);
              }
              var now = mina.time(),
                  anim = mina(fkeys, tkeys, now, now + ms, mina.time, function (val) {
                      var attr = {};
                      for (var key in keys) if (keys[has](key)) {
                          attr[key] = keys[key](val);
                      }
                      el.attr(attr);
                  }, easing);
              el.anims[anim.id] = anim;
              anim._attrs = attrs;
              anim._callback = callback;
              eve("snap.animcreated." + el.id, anim);
              eve.once("mina.finish." + anim.id, function () {
                  delete el.anims[anim.id];
                  callback && callback.call(el);
              });
              eve.once("mina.stop." + anim.id, function () {
                  delete el.anims[anim.id];
              });
              return el;
          };
          var eldata = {};
          /*\
           * Element.data
           [ method ]
           **
           * Adds or retrieves given value associated with given key. (Don’t confuse
           * with `data-` attributes)
           *
           * See also @Element.removeData
           - key (string) key to store data
           - value (any) #optional value to store
           = (object) @Element
           * or, if value is not specified:
           = (any) value
           > Usage
           | for (var i = 0, i < 5, i++) {
           |     paper.circle(10 + 15 * i, 10, 10)
           |          .attr({fill: "#000"})
           |          .data("i", i)
           |          .click(function () {
           |             alert(this.data("i"));
           |          });
           | }
           \*/
          elproto.data = function (key, value) {
              var data = eldata[this.id] = eldata[this.id] || {};
              if (arguments.length == 0){
                  eve("snap.data.get." + this.id, this, data, null);
                  return data;
              }
              if (arguments.length == 1) {
                  if (Snap.is(key, "object")) {
                      for (var i in key) if (key[has](i)) {
                          this.data(i, key[i]);
                      }
                      return this;
                  }
                  eve("snap.data.get." + this.id, this, data[key], key);
                  return data[key];
              }
              data[key] = value;
              eve("snap.data.set." + this.id, this, value, key);
              return this;
          };
          /*\
           * Element.removeData
           [ method ]
           **
           * Removes value associated with an element by given key.
           * If key is not provided, removes all the data of the element.
           - key (string) #optional key
           = (object) @Element
           \*/
          elproto.removeData = function (key) {
              if (key == null) {
                  eldata[this.id] = {};
              } else {
                  eldata[this.id] && delete eldata[this.id][key];
              }
              return this;
          };
          /*\
           * Element.outerSVG
           [ method ]
           **
           * Returns SVG code for the element, equivalent to HTML's `outerHTML`.
           *
           * See also @Element.innerSVG
           = (string) SVG code for the element
           \*/
          /*\
           * Element.toString
           [ method ]
           **
           * See @Element.outerSVG
           \*/
          elproto.outerSVG = elproto.toString = toString(1);
          /*\
           * Element.innerSVG
           [ method ]
           **
           * Returns SVG code for the element's contents, equivalent to HTML's `innerHTML`
           = (string) SVG code for the element
           \*/
          elproto.innerSVG = toString();
          function toString(type) {
              return function () {
                  var res = type ? "<" + this.type : "",
                      attr = this.node.attributes,
                      chld = this.node.childNodes;
                  if (type) {
                      for (var i = 0, ii = attr.length; i < ii; i++) {
                          res += " " + attr[i].name + '="' +
                          attr[i].value.replace(/"/g, '\\"') + '"';
                      }
                  }
                  if (chld.length) {
                      type && (res += ">");
                      for (i = 0, ii = chld.length; i < ii; i++) {
                          if (chld[i].nodeType == 3) {
                              res += chld[i].nodeValue;
                          } else if (chld[i].nodeType == 1) {
                              res += wrap(chld[i]).toString();
                          }
                      }
                      type && (res += "</" + this.type + ">");
                  } else {
                      type && (res += "/>");
                  }
                  return res;
              };
          }
          elproto.toDataURL = function () {
              if (window && window.btoa) {
                  var bb = this.getBBox(),
                      svg = Snap.format('<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="{width}" height="{height}" viewBox="{x} {y} {width} {height}">{contents}</svg>', {
                          x: +bb.x.toFixed(3),
                          y: +bb.y.toFixed(3),
                          width: +bb.width.toFixed(3),
                          height: +bb.height.toFixed(3),
                          contents: this.outerSVG()
                      });
                  return "data:image/svg+xml;base64," + btoa(unescape(encodeURIComponent(svg)));
              }
          };
          /*\
           * Fragment.select
           [ method ]
           **
           * See @Element.select
           \*/
          Fragment.prototype.select = elproto.select;
          /*\
           * Fragment.selectAll
           [ method ]
           **
           * See @Element.selectAll
           \*/
          Fragment.prototype.selectAll = elproto.selectAll;
      });
  
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
          var objectToString = Object.prototype.toString,
              Str = String,
              math = Math,
              E = "";
          function Matrix(a, b, c, d, e, f) {
              if (b == null && objectToString.call(a) == "[object SVGMatrix]") {
                  this.a = a.a;
                  this.b = a.b;
                  this.c = a.c;
                  this.d = a.d;
                  this.e = a.e;
                  this.f = a.f;
                  return;
              }
              if (a != null) {
                  this.a = +a;
                  this.b = +b;
                  this.c = +c;
                  this.d = +d;
                  this.e = +e;
                  this.f = +f;
              } else {
                  this.a = 1;
                  this.b = 0;
                  this.c = 0;
                  this.d = 1;
                  this.e = 0;
                  this.f = 0;
              }
          }
          (function (matrixproto) {
              /*\
               * Matrix.add
               [ method ]
               **
               * Adds the given matrix to existing one
               - a (number)
               - b (number)
               - c (number)
               - d (number)
               - e (number)
               - f (number)
               * or
               - matrix (object) @Matrix
               \*/
              matrixproto.add = function (a, b, c, d, e, f) {
                  var out = [[], [], []],
                      m = [[this.a, this.c, this.e], [this.b, this.d, this.f], [0, 0, 1]],
                      matrix = [[a, c, e], [b, d, f], [0, 0, 1]],
                      x, y, z, res;
  
                  if (a && a instanceof Matrix) {
                      matrix = [[a.a, a.c, a.e], [a.b, a.d, a.f], [0, 0, 1]];
                  }
  
                  for (x = 0; x < 3; x++) {
                      for (y = 0; y < 3; y++) {
                          res = 0;
                          for (z = 0; z < 3; z++) {
                              res += m[x][z] * matrix[z][y];
                          }
                          out[x][y] = res;
                      }
                  }
                  this.a = out[0][0];
                  this.b = out[1][0];
                  this.c = out[0][1];
                  this.d = out[1][1];
                  this.e = out[0][2];
                  this.f = out[1][2];
                  return this;
              };
              /*\
               * Matrix.invert
               [ method ]
               **
               * Returns an inverted version of the matrix
               = (object) @Matrix
               \*/
              matrixproto.invert = function () {
                  var me = this,
                      x = me.a * me.d - me.b * me.c;
                  return new Matrix(me.d / x, -me.b / x, -me.c / x, me.a / x, (me.c * me.f - me.d * me.e) / x, (me.b * me.e - me.a * me.f) / x);
              };
              /*\
               * Matrix.clone
               [ method ]
               **
               * Returns a copy of the matrix
               = (object) @Matrix
               \*/
              matrixproto.clone = function () {
                  return new Matrix(this.a, this.b, this.c, this.d, this.e, this.f);
              };
              /*\
               * Matrix.translate
               [ method ]
               **
               * Translate the matrix
               - x (number) horizontal offset distance
               - y (number) vertical offset distance
               \*/
              matrixproto.translate = function (x, y) {
                  return this.add(1, 0, 0, 1, x, y);
              };
              /*\
               * Matrix.scale
               [ method ]
               **
               * Scales the matrix
               - x (number) amount to be scaled, with `1` resulting in no change
               - y (number) #optional amount to scale along the vertical axis. (Otherwise `x` applies to both axes.)
               - cx (number) #optional horizontal origin point from which to scale
               - cy (number) #optional vertical origin point from which to scale
               * Default cx, cy is the middle point of the element.
               \*/
              matrixproto.scale = function (x, y, cx, cy) {
                  y == null && (y = x);
                  (cx || cy) && this.add(1, 0, 0, 1, cx, cy);
                  this.add(x, 0, 0, y, 0, 0);
                  (cx || cy) && this.add(1, 0, 0, 1, -cx, -cy);
                  return this;
              };
              /*\
               * Matrix.rotate
               [ method ]
               **
               * Rotates the matrix
               - a (number) angle of rotation, in degrees
               - x (number) horizontal origin point from which to rotate
               - y (number) vertical origin point from which to rotate
               \*/
              matrixproto.rotate = function (a, x, y) {
                  a = Snap.rad(a);
                  x = x || 0;
                  y = y || 0;
                  var cos = +math.cos(a).toFixed(9),
                      sin = +math.sin(a).toFixed(9);
                  this.add(cos, sin, -sin, cos, x, y);
                  return this.add(1, 0, 0, 1, -x, -y);
              };
              /*\
               * Matrix.x
               [ method ]
               **
               * Returns x coordinate for given point after transformation described by the matrix. See also @Matrix.y
               - x (number)
               - y (number)
               = (number) x
               \*/
              matrixproto.x = function (x, y) {
                  return x * this.a + y * this.c + this.e;
              };
              /*\
               * Matrix.y
               [ method ]
               **
               * Returns y coordinate for given point after transformation described by the matrix. See also @Matrix.x
               - x (number)
               - y (number)
               = (number) y
               \*/
              matrixproto.y = function (x, y) {
                  return x * this.b + y * this.d + this.f;
              };
              matrixproto.get = function (i) {
                  return +this[Str.fromCharCode(97 + i)].toFixed(4);
              };
              matrixproto.toString = function () {
                  return "matrix(" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)].join() + ")";
              };
              matrixproto.offset = function () {
                  return [this.e.toFixed(4), this.f.toFixed(4)];
              };
              function norm(a) {
                  return a[0] * a[0] + a[1] * a[1];
              }
              function normalize(a) {
                  var mag = math.sqrt(norm(a));
                  a[0] && (a[0] /= mag);
                  a[1] && (a[1] /= mag);
              }
              /*\
               * Matrix.determinant
               [ method ]
               **
               * Finds determinant of the given matrix.
               = (number) determinant
               \*/
              matrixproto.determinant = function () {
                  return this.a * this.d - this.b * this.c;
              };
              /*\
               * Matrix.split
               [ method ]
               **
               * Splits matrix into primitive transformations
               = (object) in format:
               o dx (number) translation by x
               o dy (number) translation by y
               o scalex (number) scale by x
               o scaley (number) scale by y
               o shear (number) shear
               o rotate (number) rotation in deg
               o isSimple (boolean) could it be represented via simple transformations
               \*/
              matrixproto.split = function () {
                  var out = {};
                  // translation
                  out.dx = this.e;
                  out.dy = this.f;
  
                  // scale and shear
                  var row = [[this.a, this.c], [this.b, this.d]];
                  out.scalex = math.sqrt(norm(row[0]));
                  normalize(row[0]);
  
                  out.shear = row[0][0] * row[1][0] + row[0][1] * row[1][1];
                  row[1] = [row[1][0] - row[0][0] * out.shear, row[1][1] - row[0][1] * out.shear];
  
                  out.scaley = math.sqrt(norm(row[1]));
                  normalize(row[1]);
                  out.shear /= out.scaley;
  
                  if (this.determinant() < 0) {
                      out.scalex = -out.scalex;
                  }
  
                  // rotation
                  var sin = -row[0][1],
                      cos = row[1][1];
                  if (cos < 0) {
                      out.rotate = Snap.deg(math.acos(cos));
                      if (sin < 0) {
                          out.rotate = 360 - out.rotate;
                      }
                  } else {
                      out.rotate = Snap.deg(math.asin(sin));
                  }
  
                  out.isSimple = !+out.shear.toFixed(9) && (out.scalex.toFixed(9) == out.scaley.toFixed(9) || !out.rotate);
                  out.isSuperSimple = !+out.shear.toFixed(9) && out.scalex.toFixed(9) == out.scaley.toFixed(9) && !out.rotate;
                  out.noRotation = !+out.shear.toFixed(9) && !out.rotate;
                  return out;
              };
              /*\
               * Matrix.toTransformString
               [ method ]
               **
               * Returns transform string that represents given matrix
               = (string) transform string
               \*/
              matrixproto.toTransformString = function (shorter) {
                  var s = shorter || this.split();
                  if (!+s.shear.toFixed(9)) {
                      s.scalex = +s.scalex.toFixed(4);
                      s.scaley = +s.scaley.toFixed(4);
                      s.rotate = +s.rotate.toFixed(4);
                      return  (s.dx || s.dy ? "t" + [+s.dx.toFixed(4), +s.dy.toFixed(4)] : E) +
                          (s.scalex != 1 || s.scaley != 1 ? "s" + [s.scalex, s.scaley, 0, 0] : E) +
                          (s.rotate ? "r" + [+s.rotate.toFixed(4), 0, 0] : E);
                  } else {
                      return "m" + [this.get(0), this.get(1), this.get(2), this.get(3), this.get(4), this.get(5)];
                  }
              };
          })(Matrix.prototype);
          /*\
           * Snap.Matrix
           [ method ]
           **
           * Matrix constructor, extend on your own risk.
           * To create matrices use @Snap.matrix.
           \*/
          Snap.Matrix = Matrix;
          /*\
           * Snap.matrix
           [ method ]
           **
           * Utility method
           **
           * Returns a matrix based on the given parameters
           - a (number)
           - b (number)
           - c (number)
           - d (number)
           - e (number)
           - f (number)
           * or
           - svgMatrix (SVGMatrix)
           = (object) @Matrix
           \*/
          Snap.matrix = function (a, b, c, d, e, f) {
              return new Matrix(a, b, c, d, e, f);
          };
      });
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
          var has = "hasOwnProperty",
              make = Snap._.make,
              wrap = Snap._.wrap,
              is = Snap.is,
              getSomeDefs = Snap._.getSomeDefs,
              reURLValue = /^url\(#?([^)]+)\)$/,
              $ = Snap._.$,
              URL = Snap.url,
              Str = String,
              separator = Snap._.separator,
              E = "";
          // Attributes event handlers
          eve.on("snap.util.attr.mask", function (value) {
              if (value instanceof Element || value instanceof Fragment) {
                  eve.stop();
                  if (value instanceof Fragment && value.node.childNodes.length == 1) {
                      value = value.node.firstChild;
                      getSomeDefs(this).appendChild(value);
                      value = wrap(value);
                  }
                  if (value.type == "mask") {
                      var mask = value;
                  } else {
                      mask = make("mask", getSomeDefs(this));
                      mask.node.appendChild(value.node);
                  }
                  !mask.node.id && $(mask.node, {
                      id: mask.id
                  });
                  $(this.node, {
                      mask: URL(mask.id)
                  });
              }
          });
          (function (clipIt) {
              eve.on("snap.util.attr.clip", clipIt);
              eve.on("snap.util.attr.clip-path", clipIt);
              eve.on("snap.util.attr.clipPath", clipIt);
          }(function (value) {
              if (value instanceof Element || value instanceof Fragment) {
                  eve.stop();
                  if (value.type == "clipPath") {
                      var clip = value;
                  } else {
                      clip = make("clipPath", getSomeDefs(this));
                      clip.node.appendChild(value.node);
                      !clip.node.id && $(clip.node, {
                          id: clip.id
                      });
                  }
                  $(this.node, {
                      "clip-path": URL(clip.node.id || clip.id)
                  });
              }
          }));
          function fillStroke(name) {
              return function (value) {
                  eve.stop();
                  if (value instanceof Fragment && value.node.childNodes.length == 1 &&
                      (value.node.firstChild.tagName == "radialGradient" ||
                      value.node.firstChild.tagName == "linearGradient" ||
                      value.node.firstChild.tagName == "pattern")) {
                      value = value.node.firstChild;
                      getSomeDefs(this).appendChild(value);
                      value = wrap(value);
                  }
                  if (value instanceof Element) {
                      if (value.type == "radialGradient" || value.type == "linearGradient"
                          || value.type == "pattern") {
                          if (!value.node.id) {
                              $(value.node, {
                                  id: value.id
                              });
                          }
                          var fill = URL(value.node.id);
                      } else {
                          fill = value.attr(name);
                      }
                  } else {
                      fill = Snap.color(value);
                      if (fill.error) {
                          var grad = Snap(getSomeDefs(this).ownerSVGElement).gradient(value);
                          if (grad) {
                              if (!grad.node.id) {
                                  $(grad.node, {
                                      id: grad.id
                                  });
                              }
                              fill = URL(grad.node.id);
                          } else {
                              fill = value;
                          }
                      } else {
                          fill = Str(fill);
                      }
                  }
                  var attrs = {};
                  attrs[name] = fill;
                  $(this.node, attrs);
                  this.node.style[name] = E;
              };
          }
          eve.on("snap.util.attr.fill", fillStroke("fill"));
          eve.on("snap.util.attr.stroke", fillStroke("stroke"));
          var gradrg = /^([lr])(?:\(([^)]*)\))?(.*)$/i;
          eve.on("snap.util.grad.parse", function parseGrad(string) {
              string = Str(string);
              var tokens = string.match(gradrg);
              if (!tokens) {
                  return null;
              }
              var type = tokens[1],
                  params = tokens[2],
                  stops = tokens[3];
              params = params.split(/\s*,\s*/).map(function (el) {
                  return +el == el ? +el : el;
              });
              if (params.length == 1 && params[0] == 0) {
                  params = [];
              }
              stops = stops.split("-");
              stops = stops.map(function (el) {
                  el = el.split(":");
                  var out = {
                      color: el[0]
                  };
                  if (el[1]) {
                      out.offset = parseFloat(el[1]);
                  }
                  return out;
              });
              return {
                  type: type,
                  params: params,
                  stops: stops
              };
          });
  
          eve.on("snap.util.attr.d", function (value) {
              eve.stop();
              if (is(value, "array") && is(value[0], "array")) {
                  value = Snap.path.toString.call(value);
              }
              value = Str(value);
              if (value.match(/[ruo]/i)) {
                  value = Snap.path.toAbsolute(value);
              }
              $(this.node, {d: value});
          })(-1);
          eve.on("snap.util.attr.#text", function (value) {
              eve.stop();
              value = Str(value);
              var txt = glob.doc.createTextNode(value);
              while (this.node.firstChild) {
                  this.node.removeChild(this.node.firstChild);
              }
              this.node.appendChild(txt);
          })(-1);
          eve.on("snap.util.attr.path", function (value) {
              eve.stop();
              this.attr({d: value});
          })(-1);
          eve.on("snap.util.attr.class", function (value) {
              eve.stop();
              this.node.className.baseVal = value;
          })(-1);
          eve.on("snap.util.attr.viewBox", function (value) {
              var vb;
              if (is(value, "object") && "x" in value) {
                  vb = [value.x, value.y, value.width, value.height].join(" ");
              } else if (is(value, "array")) {
                  vb = value.join(" ");
              } else {
                  vb = value;
              }
              $(this.node, {
                  viewBox: vb
              });
              eve.stop();
          })(-1);
          eve.on("snap.util.attr.transform", function (value) {
              this.transform(value);
              eve.stop();
          })(-1);
          eve.on("snap.util.attr.r", function (value) {
              if (this.type == "rect") {
                  eve.stop();
                  $(this.node, {
                      rx: value,
                      ry: value
                  });
              }
          })(-1);
          eve.on("snap.util.attr.textpath", function (value) {
              eve.stop();
              if (this.type == "text") {
                  var id, tp, node;
                  if (!value && this.textPath) {
                      tp = this.textPath;
                      while (tp.node.firstChild) {
                          this.node.appendChild(tp.node.firstChild);
                      }
                      tp.remove();
                      delete this.textPath;
                      return;
                  }
                  if (is(value, "string")) {
                      var defs = getSomeDefs(this),
                          path = wrap(defs.parentNode).path(value);
                      defs.appendChild(path.node);
                      id = path.id;
                      path.attr({id: id});
                  } else {
                      value = wrap(value);
                      if (value instanceof Element) {
                          id = value.attr("id");
                          if (!id) {
                              id = value.id;
                              value.attr({id: id});
                          }
                      }
                  }
                  if (id) {
                      tp = this.textPath;
                      node = this.node;
                      if (tp) {
                          tp.attr({"xlink:href": "#" + id});
                      } else {
                          tp = $("textPath", {
                              "xlink:href": "#" + id
                          });
                          while (node.firstChild) {
                              tp.appendChild(node.firstChild);
                          }
                          node.appendChild(tp);
                          this.textPath = wrap(tp);
                      }
                  }
              }
          })(-1);
          eve.on("snap.util.attr.text", function (value) {
              if (this.type == "text") {
                  var i = 0,
                      node = this.node,
                      tuner = function (chunk) {
                          var out = $("tspan");
                          if (is(chunk, "array")) {
                              for (var i = 0; i < chunk.length; i++) {
                                  out.appendChild(tuner(chunk[i]));
                              }
                          } else {
                              out.appendChild(glob.doc.createTextNode(chunk));
                          }
                          out.normalize && out.normalize();
                          return out;
                      };
                  while (node.firstChild) {
                      node.removeChild(node.firstChild);
                  }
                  var tuned = tuner(value);
                  while (tuned.firstChild) {
                      node.appendChild(tuned.firstChild);
                  }
              }
              eve.stop();
          })(-1);
          function setFontSize(value) {
              eve.stop();
              if (value == +value) {
                  value += "px";
              }
              this.node.style.fontSize = value;
          }
          eve.on("snap.util.attr.fontSize", setFontSize)(-1);
          eve.on("snap.util.attr.font-size", setFontSize)(-1);
  
  
          eve.on("snap.util.getattr.transform", function () {
              eve.stop();
              return this.transform();
          })(-1);
          eve.on("snap.util.getattr.textpath", function () {
              eve.stop();
              return this.textPath;
          })(-1);
          // Markers
          (function () {
              function getter(end) {
                  return function () {
                      eve.stop();
                      var style = glob.doc.defaultView.getComputedStyle(this.node, null).getPropertyValue("marker-" + end);
                      if (style == "none") {
                          return style;
                      } else {
                          return Snap(glob.doc.getElementById(style.match(reURLValue)[1]));
                      }
                  };
              }
              function setter(end) {
                  return function (value) {
                      eve.stop();
                      var name = "marker" + end.charAt(0).toUpperCase() + end.substring(1);
                      if (value == "" || !value) {
                          this.node.style[name] = "none";
                          return;
                      }
                      if (value.type == "marker") {
                          var id = value.node.id;
                          if (!id) {
                              $(value.node, {id: value.id});
                          }
                          this.node.style[name] = URL(id);
                          return;
                      }
                  };
              }
              eve.on("snap.util.getattr.marker-end", getter("end"))(-1);
              eve.on("snap.util.getattr.markerEnd", getter("end"))(-1);
              eve.on("snap.util.getattr.marker-start", getter("start"))(-1);
              eve.on("snap.util.getattr.markerStart", getter("start"))(-1);
              eve.on("snap.util.getattr.marker-mid", getter("mid"))(-1);
              eve.on("snap.util.getattr.markerMid", getter("mid"))(-1);
              eve.on("snap.util.attr.marker-end", setter("end"))(-1);
              eve.on("snap.util.attr.markerEnd", setter("end"))(-1);
              eve.on("snap.util.attr.marker-start", setter("start"))(-1);
              eve.on("snap.util.attr.markerStart", setter("start"))(-1);
              eve.on("snap.util.attr.marker-mid", setter("mid"))(-1);
              eve.on("snap.util.attr.markerMid", setter("mid"))(-1);
          }());
          eve.on("snap.util.getattr.r", function () {
              if (this.type == "rect" && $(this.node, "rx") == $(this.node, "ry")) {
                  eve.stop();
                  return $(this.node, "rx");
              }
          })(-1);
          function textExtract(node) {
              var out = [];
              var children = node.childNodes;
              for (var i = 0, ii = children.length; i < ii; i++) {
                  var chi = children[i];
                  if (chi.nodeType == 3) {
                      out.push(chi.nodeValue);
                  }
                  if (chi.tagName == "tspan") {
                      if (chi.childNodes.length == 1 && chi.firstChild.nodeType == 3) {
                          out.push(chi.firstChild.nodeValue);
                      } else {
                          out.push(textExtract(chi));
                      }
                  }
              }
              return out;
          }
          eve.on("snap.util.getattr.text", function () {
              if (this.type == "text" || this.type == "tspan") {
                  eve.stop();
                  var out = textExtract(this.node);
                  return out.length == 1 ? out[0] : out;
              }
          })(-1);
          eve.on("snap.util.getattr.#text", function () {
              return this.node.textContent;
          })(-1);
          eve.on("snap.util.getattr.viewBox", function () {
              eve.stop();
              var vb = $(this.node, "viewBox");
              if (vb) {
                  vb = vb.split(separator);
                  return Snap._.box(+vb[0], +vb[1], +vb[2], +vb[3]);
              } else {
                  return;
              }
          })(-1);
          eve.on("snap.util.getattr.points", function () {
              var p = $(this.node, "points");
              eve.stop();
              if (p) {
                  return p.split(separator);
              } else {
                  return;
              }
          })(-1);
          eve.on("snap.util.getattr.path", function () {
              var p = $(this.node, "d");
              eve.stop();
              return p;
          })(-1);
          eve.on("snap.util.getattr.class", function () {
              return this.node.className.baseVal;
          })(-1);
          function getFontSize() {
              eve.stop();
              return this.node.style.fontSize;
          }
          eve.on("snap.util.getattr.fontSize", getFontSize)(-1);
          eve.on("snap.util.getattr.font-size", getFontSize)(-1);
      });
  
  // Copyright (c) 2014 Adobe Systems Incorporated. All rights reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  // http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
          var rgNotSpace = /\S+/g,
              rgBadSpace = /[\t\r\n\f]/g,
              rgTrim = /(^\s+|\s+$)/g,
              Str = String,
              elproto = Element.prototype;
          /*\
           * Element.addClass
           [ method ]
           **
           * Adds given class name or list of class names to the element.
           - value (string) class name or space separated list of class names
           **
           = (Element) original element.
           \*/
          elproto.addClass = function (value) {
              var classes = Str(value || "").match(rgNotSpace) || [],
                  elem = this.node,
                  className = elem.className.baseVal,
                  curClasses = className.match(rgNotSpace) || [],
                  j,
                  pos,
                  clazz,
                  finalValue;
  
              if (classes.length) {
                  j = 0;
                  while ((clazz = classes[j++])) {
                      pos = curClasses.indexOf(clazz);
                      if (!~pos) {
                          curClasses.push(clazz);
                      }
                  }
  
                  finalValue = curClasses.join(" ");
                  if (className != finalValue) {
                      elem.className.baseVal = finalValue;
                  }
              }
              return this;
          };
          /*\
           * Element.removeClass
           [ method ]
           **
           * Removes given class name or list of class names from the element.
           - value (string) class name or space separated list of class names
           **
           = (Element) original element.
           \*/
          elproto.removeClass = function (value) {
              var classes = Str(value || "").match(rgNotSpace) || [],
                  elem = this.node,
                  className = elem.className.baseVal,
                  curClasses = className.match(rgNotSpace) || [],
                  j,
                  pos,
                  clazz,
                  finalValue;
              if (curClasses.length) {
                  j = 0;
                  while ((clazz = classes[j++])) {
                      pos = curClasses.indexOf(clazz);
                      if (~pos) {
                          curClasses.splice(pos, 1);
                      }
                  }
  
                  finalValue = curClasses.join(" ");
                  if (className != finalValue) {
                      elem.className.baseVal = finalValue;
                  }
              }
              return this;
          };
          /*\
           * Element.hasClass
           [ method ]
           **
           * Checks if the element has a given class name in the list of class names applied to it.
           - value (string) class name
           **
           = (boolean) `true` if the element has given class
           \*/
          elproto.hasClass = function (value) {
              var elem = this.node,
                  className = elem.className.baseVal,
                  curClasses = className.match(rgNotSpace) || [];
              return !!~curClasses.indexOf(value);
          };
          /*\
           * Element.toggleClass
           [ method ]
           **
           * Add or remove one or more classes from the element, depending on either
           * the class’s presence or the value of the `flag` argument.
           - value (string) class name or space separated list of class names
           - flag (boolean) value to determine whether the class should be added or removed
           **
           = (Element) original element.
           \*/
          elproto.toggleClass = function (value, flag) {
              if (flag != null) {
                  if (flag) {
                      return this.addClass(value);
                  } else {
                      return this.removeClass(value);
                  }
              }
              var classes = (value || "").match(rgNotSpace) || [],
                  elem = this.node,
                  className = elem.className.baseVal,
                  curClasses = className.match(rgNotSpace) || [],
                  j,
                  pos,
                  clazz,
                  finalValue;
              j = 0;
              while ((clazz = classes[j++])) {
                  pos = curClasses.indexOf(clazz);
                  if (~pos) {
                      curClasses.splice(pos, 1);
                  } else {
                      curClasses.push(clazz);
                  }
              }
  
              finalValue = curClasses.join(" ");
              if (className != finalValue) {
                  elem.className.baseVal = finalValue;
              }
              return this;
          };
      });
  
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
          var operators = {
                  "+": function (x, y) {
                      return x + y;
                  },
                  "-": function (x, y) {
                      return x - y;
                  },
                  "/": function (x, y) {
                      return x / y;
                  },
                  "*": function (x, y) {
                      return x * y;
                  }
              },
              Str = String,
              reUnit = /[a-z]+$/i,
              reAddon = /^\s*([+\-\/*])\s*=\s*([\d.eE+\-]+)\s*([^\d\s]+)?\s*$/;
          function getNumber(val) {
              return val;
          }
          function getUnit(unit) {
              return function (val) {
                  return +val.toFixed(3) + unit;
              };
          }
          eve.on("snap.util.attr", function (val) {
              var plus = Str(val).match(reAddon);
              if (plus) {
                  var evnt = eve.nt(),
                      name = evnt.substring(evnt.lastIndexOf(".") + 1),
                      a = this.attr(name),
                      atr = {};
                  eve.stop();
                  var unit = plus[3] || "",
                      aUnit = a.match(reUnit),
                      op = operators[plus[1]];
                  if (aUnit && aUnit == unit) {
                      val = op(parseFloat(a), +plus[2]);
                  } else {
                      a = this.asPX(name);
                      val = op(this.asPX(name), this.asPX(name, plus[2] + unit));
                  }
                  if (isNaN(a) || isNaN(val)) {
                      return;
                  }
                  atr[name] = val;
                  this.attr(atr);
              }
          })(-10);
          eve.on("snap.util.equal", function (name, b) {
              var A, B, a = Str(this.attr(name) || ""),
                  el = this,
                  bplus = Str(b).match(reAddon);
              if (bplus) {
                  eve.stop();
                  var unit = bplus[3] || "",
                      aUnit = a.match(reUnit),
                      op = operators[bplus[1]];
                  if (aUnit && aUnit == unit) {
                      return {
                          from: parseFloat(a),
                          to: op(parseFloat(a), +bplus[2]),
                          f: getUnit(aUnit)
                      };
                  } else {
                      a = this.asPX(name);
                      return {
                          from: a,
                          to: op(a, this.asPX(name, bplus[2] + unit)),
                          f: getNumber
                      };
                  }
              }
          })(-10);
      });
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
          var proto = Paper.prototype,
              is = Snap.is;
          /*\
           * Paper.rect
           [ method ]
           *
           * Draws a rectangle
           **
           - x (number) x coordinate of the top left corner
           - y (number) y coordinate of the top left corner
           - width (number) width
           - height (number) height
           - rx (number) #optional horizontal radius for rounded corners, default is 0
           - ry (number) #optional vertical radius for rounded corners, default is rx or 0
           = (object) the `rect` element
           **
           > Usage
           | // regular rectangle
           | var c = paper.rect(10, 10, 50, 50);
           | // rectangle with rounded corners
           | var c = paper.rect(40, 40, 50, 50, 10);
           \*/
          proto.rect = function (x, y, w, h, rx, ry) {
              var attr;
              if (ry == null) {
                  ry = rx;
              }
              if (is(x, "object") && x == "[object Object]") {
                  attr = x;
              } else if (x != null) {
                  attr = {
                      x: x,
                      y: y,
                      width: w,
                      height: h
                  };
                  if (rx != null) {
                      attr.rx = rx;
                      attr.ry = ry;
                  }
              }
              return this.el("rect", attr);
          };
          /*\
           * Paper.circle
           [ method ]
           **
           * Draws a circle
           **
           - x (number) x coordinate of the centre
           - y (number) y coordinate of the centre
           - r (number) radius
           = (object) the `circle` element
           **
           > Usage
           | var c = paper.circle(50, 50, 40);
           \*/
          proto.circle = function (cx, cy, r) {
              var attr;
              if (is(cx, "object") && cx == "[object Object]") {
                  attr = cx;
              } else if (cx != null) {
                  attr = {
                      cx: cx,
                      cy: cy,
                      r: r
                  };
              }
              return this.el("circle", attr);
          };
  
          var preload = (function () {
              function onerror() {
                  this.parentNode.removeChild(this);
              }
              return function (src, f) {
                  var img = glob.doc.createElement("img"),
                      body = glob.doc.body;
                  img.style.cssText = "position:absolute;left:-9999em;top:-9999em";
                  img.onload = function () {
                      f.call(img);
                      img.onload = img.onerror = null;
                      body.removeChild(img);
                  };
                  img.onerror = onerror;
                  body.appendChild(img);
                  img.src = src;
              };
          }());
  
          /*\
           * Paper.image
           [ method ]
           **
           * Places an image on the surface
           **
           - src (string) URI of the source image
           - x (number) x offset position
           - y (number) y offset position
           - width (number) width of the image
           - height (number) height of the image
           = (object) the `image` element
           * or
           = (object) Snap element object with type `image`
           **
           > Usage
           | var c = paper.image("apple.png", 10, 10, 80, 80);
           \*/
          proto.image = function (src, x, y, width, height) {
              var el = this.el("image");
              if (is(src, "object") && "src" in src) {
                  el.attr(src);
              } else if (src != null) {
                  var set = {
                      "xlink:href": src,
                      preserveAspectRatio: "none"
                  };
                  if (x != null && y != null) {
                      set.x = x;
                      set.y = y;
                  }
                  if (width != null && height != null) {
                      set.width = width;
                      set.height = height;
                  } else {
                      preload(src, function () {
                          Snap._.$(el.node, {
                              width: this.offsetWidth,
                              height: this.offsetHeight
                          });
                      });
                  }
                  Snap._.$(el.node, set);
              }
              return el;
          };
          /*\
           * Paper.ellipse
           [ method ]
           **
           * Draws an ellipse
           **
           - x (number) x coordinate of the centre
           - y (number) y coordinate of the centre
           - rx (number) horizontal radius
           - ry (number) vertical radius
           = (object) the `ellipse` element
           **
           > Usage
           | var c = paper.ellipse(50, 50, 40, 20);
           \*/
          proto.ellipse = function (cx, cy, rx, ry) {
              var attr;
              if (is(cx, "object") && cx == "[object Object]") {
                  attr = cx;
              } else if (cx != null) {
                  attr ={
                      cx: cx,
                      cy: cy,
                      rx: rx,
                      ry: ry
                  };
              }
              return this.el("ellipse", attr);
          };
          // SIERRA Paper.path(): Unclear from the link what a Catmull-Rom curveto is, and why it would make life any easier.
          /*\
           * Paper.path
           [ method ]
           **
           * Creates a `<path>` element using the given string as the path's definition
           - pathString (string) #optional path string in SVG format
           * Path string consists of one-letter commands, followed by comma seprarated arguments in numerical form. Example:
           | "M10,20L30,40"
           * This example features two commands: `M`, with arguments `(10, 20)` and `L` with arguments `(30, 40)`. Uppercase letter commands express coordinates in absolute terms, while lowercase commands express them in relative terms from the most recently declared coordinates.
           *
           # <p>Here is short list of commands available, for more details see <a href="http://www.w3.org/TR/SVG/paths.html#PathData" title="Details of a path's data attribute's format are described in the SVG specification.">SVG path string format</a> or <a href="https://developer.mozilla.org/en/SVG/Tutorial/Paths">article about path strings at MDN</a>.</p>
           # <table><thead><tr><th>Command</th><th>Name</th><th>Parameters</th></tr></thead><tbody>
           # <tr><td>M</td><td>moveto</td><td>(x y)+</td></tr>
           # <tr><td>Z</td><td>closepath</td><td>(none)</td></tr>
           # <tr><td>L</td><td>lineto</td><td>(x y)+</td></tr>
           # <tr><td>H</td><td>horizontal lineto</td><td>x+</td></tr>
           # <tr><td>V</td><td>vertical lineto</td><td>y+</td></tr>
           # <tr><td>C</td><td>curveto</td><td>(x1 y1 x2 y2 x y)+</td></tr>
           # <tr><td>S</td><td>smooth curveto</td><td>(x2 y2 x y)+</td></tr>
           # <tr><td>Q</td><td>quadratic Bézier curveto</td><td>(x1 y1 x y)+</td></tr>
           # <tr><td>T</td><td>smooth quadratic Bézier curveto</td><td>(x y)+</td></tr>
           # <tr><td>A</td><td>elliptical arc</td><td>(rx ry x-axis-rotation large-arc-flag sweep-flag x y)+</td></tr>
           # <tr><td>R</td><td><a href="http://en.wikipedia.org/wiki/Catmull–Rom_spline#Catmull.E2.80.93Rom_spline">Catmull-Rom curveto</a>*</td><td>x1 y1 (x y)+</td></tr></tbody></table>
           * * _Catmull-Rom curveto_ is a not standard SVG command and added to make life easier.
           * Note: there is a special case when a path consists of only three commands: `M10,10R…z`. In this case the path connects back to its starting point.
           > Usage
           | var c = paper.path("M10 10L90 90");
           | // draw a diagonal line:
           | // move to 10,10, line to 90,90
           \*/
          proto.path = function (d) {
              var attr;
              if (is(d, "object") && !is(d, "array")) {
                  attr = d;
              } else if (d) {
                  attr = {d: d};
              }
              return this.el("path", attr);
          };
          /*\
           * Paper.g
           [ method ]
           **
           * Creates a group element
           **
           - varargs (…) #optional elements to nest within the group
           = (object) the `g` element
           **
           > Usage
           | var c1 = paper.circle(),
           |     c2 = paper.rect(),
           |     g = paper.g(c2, c1); // note that the order of elements is different
           * or
           | var c1 = paper.circle(),
           |     c2 = paper.rect(),
           |     g = paper.g();
           | g.add(c2, c1);
           \*/
          /*\
           * Paper.group
           [ method ]
           **
           * See @Paper.g
           \*/
          proto.group = proto.g = function (first) {
              var attr,
                  el = this.el("g");
              if (arguments.length == 1 && first && !first.type) {
                  el.attr(first);
              } else if (arguments.length) {
                  el.add(Array.prototype.slice.call(arguments, 0));
              }
              return el;
          };
          /*\
           * Paper.svg
           [ method ]
           **
           * Creates a nested SVG element.
           - x (number) @optional X of the element
           - y (number) @optional Y of the element
           - width (number) @optional width of the element
           - height (number) @optional height of the element
           - vbx (number) @optional viewbox X
           - vby (number) @optional viewbox Y
           - vbw (number) @optional viewbox width
           - vbh (number) @optional viewbox height
           **
           = (object) the `svg` element
           **
           \*/
          proto.svg = function (x, y, width, height, vbx, vby, vbw, vbh) {
              var attrs = {};
              if (is(x, "object") && y == null) {
                  attrs = x;
              } else {
                  if (x != null) {
                      attrs.x = x;
                  }
                  if (y != null) {
                      attrs.y = y;
                  }
                  if (width != null) {
                      attrs.width = width;
                  }
                  if (height != null) {
                      attrs.height = height;
                  }
                  if (vbx != null && vby != null && vbw != null && vbh != null) {
                      attrs.viewBox = [vbx, vby, vbw, vbh];
                  }
              }
              return this.el("svg", attrs);
          };
          /*\
           * Paper.mask
           [ method ]
           **
           * Equivalent in behaviour to @Paper.g, except it’s a mask.
           **
           = (object) the `mask` element
           **
           \*/
          proto.mask = function (first) {
              var attr,
                  el = this.el("mask");
              if (arguments.length == 1 && first && !first.type) {
                  el.attr(first);
              } else if (arguments.length) {
                  el.add(Array.prototype.slice.call(arguments, 0));
              }
              return el;
          };
          /*\
           * Paper.ptrn
           [ method ]
           **
           * Equivalent in behaviour to @Paper.g, except it’s a pattern.
           - x (number) @optional X of the element
           - y (number) @optional Y of the element
           - width (number) @optional width of the element
           - height (number) @optional height of the element
           - vbx (number) @optional viewbox X
           - vby (number) @optional viewbox Y
           - vbw (number) @optional viewbox width
           - vbh (number) @optional viewbox height
           **
           = (object) the `pattern` element
           **
           \*/
          proto.ptrn = function (x, y, width, height, vx, vy, vw, vh) {
              if (is(x, "object")) {
                  var attr = x;
              } else {
                  attr = {patternUnits: "userSpaceOnUse"};
                  if (x) {
                      attr.x = x;
                  }
                  if (y) {
                      attr.y = y;
                  }
                  if (width != null) {
                      attr.width = width;
                  }
                  if (height != null) {
                      attr.height = height;
                  }
                  if (vx != null && vy != null && vw != null && vh != null) {
                      attr.viewBox = [vx, vy, vw, vh];
                  } else {
                      attr.viewBox = [x || 0, y || 0, width || 0, height || 0];
                  }
              }
              return this.el("pattern", attr);
          };
          /*\
           * Paper.use
           [ method ]
           **
           * Creates a <use> element.
           - id (string) @optional id of element to link
           * or
           - id (Element) @optional element to link
           **
           = (object) the `use` element
           **
           \*/
          proto.use = function (id) {
              if (id != null) {
                  if (id instanceof Element) {
                      if (!id.attr("id")) {
                          id.attr({id: Snap._.id(id)});
                      }
                      id = id.attr("id");
                  }
                  if (String(id).charAt() == "#") {
                      id = id.substring(1);
                  }
                  return this.el("use", {"xlink:href": "#" + id});
              } else {
                  return Element.prototype.use.call(this);
              }
          };
          /*\
           * Paper.symbol
           [ method ]
           **
           * Creates a <symbol> element.
           - vbx (number) @optional viewbox X
           - vby (number) @optional viewbox Y
           - vbw (number) @optional viewbox width
           - vbh (number) @optional viewbox height
           = (object) the `symbol` element
           **
           \*/
          proto.symbol = function (vx, vy, vw, vh) {
              var attr = {};
              if (vx != null && vy != null && vw != null && vh != null) {
                  attr.viewBox = [vx, vy, vw, vh];
              }
  
              return this.el("symbol", attr);
          };
          /*\
           * Paper.text
           [ method ]
           **
           * Draws a text string
           **
           - x (number) x coordinate position
           - y (number) y coordinate position
           - text (string|array) The text string to draw or array of strings to nest within separate `<tspan>` elements
           = (object) the `text` element
           **
           > Usage
           | var t1 = paper.text(50, 50, "Snap");
           | var t2 = paper.text(50, 50, ["S","n","a","p"]);
           | // Text path usage
           | t1.attr({textpath: "M10,10L100,100"});
           | // or
           | var pth = paper.path("M10,10L100,100");
           | t1.attr({textpath: pth});
           \*/
          proto.text = function (x, y, text) {
              var attr = {};
              if (is(x, "object")) {
                  attr = x;
              } else if (x != null) {
                  attr = {
                      x: x,
                      y: y,
                      text: text || ""
                  };
              }
              return this.el("text", attr);
          };
          /*\
           * Paper.line
           [ method ]
           **
           * Draws a line
           **
           - x1 (number) x coordinate position of the start
           - y1 (number) y coordinate position of the start
           - x2 (number) x coordinate position of the end
           - y2 (number) y coordinate position of the end
           = (object) the `line` element
           **
           > Usage
           | var t1 = paper.line(50, 50, 100, 100);
           \*/
          proto.line = function (x1, y1, x2, y2) {
              var attr = {};
              if (is(x1, "object")) {
                  attr = x1;
              } else if (x1 != null) {
                  attr = {
                      x1: x1,
                      x2: x2,
                      y1: y1,
                      y2: y2
                  };
              }
              return this.el("line", attr);
          };
          /*\
           * Paper.polyline
           [ method ]
           **
           * Draws a polyline
           **
           - points (array) array of points
           * or
           - varargs (…) points
           = (object) the `polyline` element
           **
           > Usage
           | var p1 = paper.polyline([10, 10, 100, 100]);
           | var p2 = paper.polyline(10, 10, 100, 100);
           \*/
          proto.polyline = function (points) {
              if (arguments.length > 1) {
                  points = Array.prototype.slice.call(arguments, 0);
              }
              var attr = {};
              if (is(points, "object") && !is(points, "array")) {
                  attr = points;
              } else if (points != null) {
                  attr = {points: points};
              }
              return this.el("polyline", attr);
          };
          /*\
           * Paper.polygon
           [ method ]
           **
           * Draws a polygon. See @Paper.polyline
           \*/
          proto.polygon = function (points) {
              if (arguments.length > 1) {
                  points = Array.prototype.slice.call(arguments, 0);
              }
              var attr = {};
              if (is(points, "object") && !is(points, "array")) {
                  attr = points;
              } else if (points != null) {
                  attr = {points: points};
              }
              return this.el("polygon", attr);
          };
          // gradients
          (function () {
              var $ = Snap._.$;
              // gradients' helpers
              function Gstops() {
                  return this.selectAll("stop");
              }
              function GaddStop(color, offset) {
                  var stop = $("stop"),
                      attr = {
                          offset: +offset + "%"
                      };
                  color = Snap.color(color);
                  attr["stop-color"] = color.hex;
                  if (color.opacity < 1) {
                      attr["stop-opacity"] = color.opacity;
                  }
                  $(stop, attr);
                  this.node.appendChild(stop);
                  return this;
              }
              function GgetBBox() {
                  if (this.type == "linearGradient") {
                      var x1 = $(this.node, "x1") || 0,
                          x2 = $(this.node, "x2") || 1,
                          y1 = $(this.node, "y1") || 0,
                          y2 = $(this.node, "y2") || 0;
                      return Snap._.box(x1, y1, math.abs(x2 - x1), math.abs(y2 - y1));
                  } else {
                      var cx = this.node.cx || .5,
                          cy = this.node.cy || .5,
                          r = this.node.r || 0;
                      return Snap._.box(cx - r, cy - r, r * 2, r * 2);
                  }
              }
              function gradient(defs, str) {
                  var grad = eve("snap.util.grad.parse", null, str).firstDefined(),
                      el;
                  if (!grad) {
                      return null;
                  }
                  grad.params.unshift(defs);
                  if (grad.type.toLowerCase() == "l") {
                      el = gradientLinear.apply(0, grad.params);
                  } else {
                      el = gradientRadial.apply(0, grad.params);
                  }
                  if (grad.type != grad.type.toLowerCase()) {
                      $(el.node, {
                          gradientUnits: "userSpaceOnUse"
                      });
                  }
                  var stops = grad.stops,
                      len = stops.length,
                      start = 0,
                      j = 0;
                  function seed(i, end) {
                      var step = (end - start) / (i - j);
                      for (var k = j; k < i; k++) {
                          stops[k].offset = +(+start + step * (k - j)).toFixed(2);
                      }
                      j = i;
                      start = end;
                  }
                  len--;
                  for (var i = 0; i < len; i++) if ("offset" in stops[i]) {
                      seed(i, stops[i].offset);
                  }
                  stops[len].offset = stops[len].offset || 100;
                  seed(len, stops[len].offset);
                  for (i = 0; i <= len; i++) {
                      var stop = stops[i];
                      el.addStop(stop.color, stop.offset);
                  }
                  return el;
              }
              function gradientLinear(defs, x1, y1, x2, y2) {
                  var el = Snap._.make("linearGradient", defs);
                  el.stops = Gstops;
                  el.addStop = GaddStop;
                  el.getBBox = GgetBBox;
                  if (x1 != null) {
                      $(el.node, {
                          x1: x1,
                          y1: y1,
                          x2: x2,
                          y2: y2
                      });
                  }
                  return el;
              }
              function gradientRadial(defs, cx, cy, r, fx, fy) {
                  var el = Snap._.make("radialGradient", defs);
                  el.stops = Gstops;
                  el.addStop = GaddStop;
                  el.getBBox = GgetBBox;
                  if (cx != null) {
                      $(el.node, {
                          cx: cx,
                          cy: cy,
                          r: r
                      });
                  }
                  if (fx != null && fy != null) {
                      $(el.node, {
                          fx: fx,
                          fy: fy
                      });
                  }
                  return el;
              }
              /*\
               * Paper.gradient
               [ method ]
               **
               * Creates a gradient element
               **
               - gradient (string) gradient descriptor
               > Gradient Descriptor
               * The gradient descriptor is an expression formatted as
               * follows: `<type>(<coords>)<colors>`.  The `<type>` can be
               * either linear or radial.  The uppercase `L` or `R` letters
               * indicate absolute coordinates offset from the SVG surface.
               * Lowercase `l` or `r` letters indicate coordinates
               * calculated relative to the element to which the gradient is
               * applied.  Coordinates specify a linear gradient vector as
               * `x1`, `y1`, `x2`, `y2`, or a radial gradient as `cx`, `cy`,
               * `r` and optional `fx`, `fy` specifying a focal point away
               * from the center of the circle. Specify `<colors>` as a list
               * of dash-separated CSS color values.  Each color may be
               * followed by a custom offset value, separated with a colon
               * character.
               > Examples
               * Linear gradient, relative from top-left corner to bottom-right
               * corner, from black through red to white:
               | var g = paper.gradient("l(0, 0, 1, 1)#000-#f00-#fff");
               * Linear gradient, absolute from (0, 0) to (100, 100), from black
               * through red at 25% to white:
               | var g = paper.gradient("L(0, 0, 100, 100)#000-#f00:25-#fff");
               * Radial gradient, relative from the center of the element with radius
               * half the width, from black to white:
               | var g = paper.gradient("r(0.5, 0.5, 0.5)#000-#fff");
               * To apply the gradient:
               | paper.circle(50, 50, 40).attr({
               |     fill: g
               | });
               = (object) the `gradient` element
               \*/
              proto.gradient = function (str) {
                  return gradient(this.defs, str);
              };
              proto.gradientLinear = function (x1, y1, x2, y2) {
                  return gradientLinear(this.defs, x1, y1, x2, y2);
              };
              proto.gradientRadial = function (cx, cy, r, fx, fy) {
                  return gradientRadial(this.defs, cx, cy, r, fx, fy);
              };
              /*\
               * Paper.toString
               [ method ]
               **
               * Returns SVG code for the @Paper
               = (string) SVG code for the @Paper
               \*/
              proto.toString = function () {
                  var doc = this.node.ownerDocument,
                      f = doc.createDocumentFragment(),
                      d = doc.createElement("div"),
                      svg = this.node.cloneNode(true),
                      res;
                  f.appendChild(d);
                  d.appendChild(svg);
                  Snap._.$(svg, {xmlns: "http://www.w3.org/2000/svg"});
                  res = d.innerHTML;
                  f.removeChild(f.firstChild);
                  return res;
              };
              /*\
               * Paper.toDataURL
               [ method ]
               **
               * Returns SVG code for the @Paper as Data URI string.
               = (string) Data URI string
               \*/
              proto.toDataURL = function () {
                  if (window && window.btoa) {
                      return "data:image/svg+xml;base64," + btoa(unescape(encodeURIComponent(this)));
                  }
              };
              /*\
               * Paper.clear
               [ method ]
               **
               * Removes all child nodes of the paper, except <defs>.
               \*/
              proto.clear = function () {
                  var node = this.node.firstChild,
                      next;
                  while (node) {
                      next = node.nextSibling;
                      if (node.tagName != "defs") {
                          node.parentNode.removeChild(node);
                      } else {
                          proto.clear.call({node: node});
                      }
                      node = next;
                  }
              };
          }());
      });
  
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob) {
          var elproto = Element.prototype,
              is = Snap.is,
              clone = Snap._.clone,
              has = "hasOwnProperty",
              p2s = /,?([a-z]),?/gi,
              toFloat = parseFloat,
              math = Math,
              PI = math.PI,
              mmin = math.min,
              mmax = math.max,
              pow = math.pow,
              abs = math.abs;
          function paths(ps) {
              var p = paths.ps = paths.ps || {};
              if (p[ps]) {
                  p[ps].sleep = 100;
              } else {
                  p[ps] = {
                      sleep: 100
                  };
              }
              setTimeout(function () {
                  for (var key in p) if (p[has](key) && key != ps) {
                      p[key].sleep--;
                      !p[key].sleep && delete p[key];
                  }
              });
              return p[ps];
          }
          function box(x, y, width, height) {
              if (x == null) {
                  x = y = width = height = 0;
              }
              if (y == null) {
                  y = x.y;
                  width = x.width;
                  height = x.height;
                  x = x.x;
              }
              return {
                  x: x,
                  y: y,
                  width: width,
                  w: width,
                  height: height,
                  h: height,
                  x2: x + width,
                  y2: y + height,
                  cx: x + width / 2,
                  cy: y + height / 2,
                  r1: math.min(width, height) / 2,
                  r2: math.max(width, height) / 2,
                  r0: math.sqrt(width * width + height * height) / 2,
                  path: rectPath(x, y, width, height),
                  vb: [x, y, width, height].join(" ")
              };
          }
          function toString() {
              return this.join(",").replace(p2s, "$1");
          }
          function pathClone(pathArray) {
              var res = clone(pathArray);
              res.toString = toString;
              return res;
          }
          function getPointAtSegmentLength(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length) {
              if (length == null) {
                  return bezlen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y);
              } else {
                  return findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y,
                      getTotLen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length));
              }
          }
          function getLengthFactory(istotal, subpath) {
              function O(val) {
                  return +(+val).toFixed(3);
              }
              return Snap._.cacher(function (path, length, onlystart) {
                  if (path instanceof Element) {
                      path = path.attr("d");
                  }
                  path = path2curve(path);
                  var x, y, p, l, sp = "", subpaths = {}, point,
                      len = 0;
                  for (var i = 0, ii = path.length; i < ii; i++) {
                      p = path[i];
                      if (p[0] == "M") {
                          x = +p[1];
                          y = +p[2];
                      } else {
                          l = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                          if (len + l > length) {
                              if (subpath && !subpaths.start) {
                                  point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                                  sp += [
                                      "C" + O(point.start.x),
                                      O(point.start.y),
                                      O(point.m.x),
                                      O(point.m.y),
                                      O(point.x),
                                      O(point.y)
                                  ];
                                  if (onlystart) {return sp;}
                                  subpaths.start = sp;
                                  sp = [
                                      "M" + O(point.x),
                                      O(point.y) + "C" + O(point.n.x),
                                      O(point.n.y),
                                      O(point.end.x),
                                      O(point.end.y),
                                      O(p[5]),
                                      O(p[6])
                                  ].join();
                                  len += l;
                                  x = +p[5];
                                  y = +p[6];
                                  continue;
                              }
                              if (!istotal && !subpath) {
                                  point = getPointAtSegmentLength(x, y, p[1], p[2], p[3], p[4], p[5], p[6], length - len);
                                  return point;
                              }
                          }
                          len += l;
                          x = +p[5];
                          y = +p[6];
                      }
                      sp += p.shift() + p;
                  }
                  subpaths.end = sp;
                  point = istotal ? len : subpath ? subpaths : findDotsAtSegment(x, y, p[0], p[1], p[2], p[3], p[4], p[5], 1);
                  return point;
              }, null, Snap._.clone);
          }
          var getTotalLength = getLengthFactory(1),
              getPointAtLength = getLengthFactory(),
              getSubpathsAtLength = getLengthFactory(0, 1);
          function findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
              var t1 = 1 - t,
                  t13 = pow(t1, 3),
                  t12 = pow(t1, 2),
                  t2 = t * t,
                  t3 = t2 * t,
                  x = t13 * p1x + t12 * 3 * t * c1x + t1 * 3 * t * t * c2x + t3 * p2x,
                  y = t13 * p1y + t12 * 3 * t * c1y + t1 * 3 * t * t * c2y + t3 * p2y,
                  mx = p1x + 2 * t * (c1x - p1x) + t2 * (c2x - 2 * c1x + p1x),
                  my = p1y + 2 * t * (c1y - p1y) + t2 * (c2y - 2 * c1y + p1y),
                  nx = c1x + 2 * t * (c2x - c1x) + t2 * (p2x - 2 * c2x + c1x),
                  ny = c1y + 2 * t * (c2y - c1y) + t2 * (p2y - 2 * c2y + c1y),
                  ax = t1 * p1x + t * c1x,
                  ay = t1 * p1y + t * c1y,
                  cx = t1 * c2x + t * p2x,
                  cy = t1 * c2y + t * p2y,
                  alpha = (90 - math.atan2(mx - nx, my - ny) * 180 / PI);
              // (mx > nx || my < ny) && (alpha += 180);
              return {
                  x: x,
                  y: y,
                  m: {x: mx, y: my},
                  n: {x: nx, y: ny},
                  start: {x: ax, y: ay},
                  end: {x: cx, y: cy},
                  alpha: alpha
              };
          }
          function bezierBBox(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {
              if (!Snap.is(p1x, "array")) {
                  p1x = [p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y];
              }
              var bbox = curveDim.apply(null, p1x);
              return box(
                  bbox.min.x,
                  bbox.min.y,
                  bbox.max.x - bbox.min.x,
                  bbox.max.y - bbox.min.y
              );
          }
          function isPointInsideBBox(bbox, x, y) {
              return  x >= bbox.x &&
                  x <= bbox.x + bbox.width &&
                  y >= bbox.y &&
                  y <= bbox.y + bbox.height;
          }
          function isBBoxIntersect(bbox1, bbox2) {
              bbox1 = box(bbox1);
              bbox2 = box(bbox2);
              return isPointInsideBBox(bbox2, bbox1.x, bbox1.y)
                  || isPointInsideBBox(bbox2, bbox1.x2, bbox1.y)
                  || isPointInsideBBox(bbox2, bbox1.x, bbox1.y2)
                  || isPointInsideBBox(bbox2, bbox1.x2, bbox1.y2)
                  || isPointInsideBBox(bbox1, bbox2.x, bbox2.y)
                  || isPointInsideBBox(bbox1, bbox2.x2, bbox2.y)
                  || isPointInsideBBox(bbox1, bbox2.x, bbox2.y2)
                  || isPointInsideBBox(bbox1, bbox2.x2, bbox2.y2)
                  || (bbox1.x < bbox2.x2 && bbox1.x > bbox2.x
                  || bbox2.x < bbox1.x2 && bbox2.x > bbox1.x)
                  && (bbox1.y < bbox2.y2 && bbox1.y > bbox2.y
                  || bbox2.y < bbox1.y2 && bbox2.y > bbox1.y);
          }
          function base3(t, p1, p2, p3, p4) {
              var t1 = -3 * p1 + 9 * p2 - 9 * p3 + 3 * p4,
                  t2 = t * t1 + 6 * p1 - 12 * p2 + 6 * p3;
              return t * t2 - 3 * p1 + 3 * p2;
          }
          function bezlen(x1, y1, x2, y2, x3, y3, x4, y4, z) {
              if (z == null) {
                  z = 1;
              }
              z = z > 1 ? 1 : z < 0 ? 0 : z;
              var z2 = z / 2,
                  n = 12,
                  Tvalues = [-.1252,.1252,-.3678,.3678,-.5873,.5873,-.7699,.7699,-.9041,.9041,-.9816,.9816],
                  Cvalues = [0.2491,0.2491,0.2335,0.2335,0.2032,0.2032,0.1601,0.1601,0.1069,0.1069,0.0472,0.0472],
                  sum = 0;
              for (var i = 0; i < n; i++) {
                  var ct = z2 * Tvalues[i] + z2,
                      xbase = base3(ct, x1, x2, x3, x4),
                      ybase = base3(ct, y1, y2, y3, y4),
                      comb = xbase * xbase + ybase * ybase;
                  sum += Cvalues[i] * math.sqrt(comb);
              }
              return z2 * sum;
          }
          function getTotLen(x1, y1, x2, y2, x3, y3, x4, y4, ll) {
              if (ll < 0 || bezlen(x1, y1, x2, y2, x3, y3, x4, y4) < ll) {
                  return;
              }
              var t = 1,
                  step = t / 2,
                  t2 = t - step,
                  l,
                  e = .01;
              l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
              while (abs(l - ll) > e) {
                  step /= 2;
                  t2 += (l < ll ? 1 : -1) * step;
                  l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
              }
              return t2;
          }
          function intersect(x1, y1, x2, y2, x3, y3, x4, y4) {
              if (
                  mmax(x1, x2) < mmin(x3, x4) ||
                  mmin(x1, x2) > mmax(x3, x4) ||
                  mmax(y1, y2) < mmin(y3, y4) ||
                  mmin(y1, y2) > mmax(y3, y4)
              ) {
                  return;
              }
              var nx = (x1 * y2 - y1 * x2) * (x3 - x4) - (x1 - x2) * (x3 * y4 - y3 * x4),
                  ny = (x1 * y2 - y1 * x2) * (y3 - y4) - (y1 - y2) * (x3 * y4 - y3 * x4),
                  denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4);
  
              if (!denominator) {
                  return;
              }
              var px = nx / denominator,
                  py = ny / denominator,
                  px2 = +px.toFixed(2),
                  py2 = +py.toFixed(2);
              if (
                  px2 < +mmin(x1, x2).toFixed(2) ||
                  px2 > +mmax(x1, x2).toFixed(2) ||
                  px2 < +mmin(x3, x4).toFixed(2) ||
                  px2 > +mmax(x3, x4).toFixed(2) ||
                  py2 < +mmin(y1, y2).toFixed(2) ||
                  py2 > +mmax(y1, y2).toFixed(2) ||
                  py2 < +mmin(y3, y4).toFixed(2) ||
                  py2 > +mmax(y3, y4).toFixed(2)
              ) {
                  return;
              }
              return {x: px, y: py};
          }
          function inter(bez1, bez2) {
              return interHelper(bez1, bez2);
          }
          function interCount(bez1, bez2) {
              return interHelper(bez1, bez2, 1);
          }
          function interHelper(bez1, bez2, justCount) {
              var bbox1 = bezierBBox(bez1),
                  bbox2 = bezierBBox(bez2);
              if (!isBBoxIntersect(bbox1, bbox2)) {
                  return justCount ? 0 : [];
              }
              var l1 = bezlen.apply(0, bez1),
                  l2 = bezlen.apply(0, bez2),
                  n1 = ~~(l1 / 8),
                  n2 = ~~(l2 / 8),
                  dots1 = [],
                  dots2 = [],
                  xy = {},
                  res = justCount ? 0 : [];
              for (var i = 0; i < n1 + 1; i++) {
                  var p = findDotsAtSegment.apply(0, bez1.concat(i / n1));
                  dots1.push({x: p.x, y: p.y, t: i / n1});
              }
              for (i = 0; i < n2 + 1; i++) {
                  p = findDotsAtSegment.apply(0, bez2.concat(i / n2));
                  dots2.push({x: p.x, y: p.y, t: i / n2});
              }
              for (i = 0; i < n1; i++) {
                  for (var j = 0; j < n2; j++) {
                      var di = dots1[i],
                          di1 = dots1[i + 1],
                          dj = dots2[j],
                          dj1 = dots2[j + 1],
                          ci = abs(di1.x - di.x) < .001 ? "y" : "x",
                          cj = abs(dj1.x - dj.x) < .001 ? "y" : "x",
                          is = intersect(di.x, di.y, di1.x, di1.y, dj.x, dj.y, dj1.x, dj1.y);
                      if (is) {
                          if (xy[is.x.toFixed(4)] == is.y.toFixed(4)) {
                              continue;
                          }
                          xy[is.x.toFixed(4)] = is.y.toFixed(4);
                          var t1 = di.t + abs((is[ci] - di[ci]) / (di1[ci] - di[ci])) * (di1.t - di.t),
                              t2 = dj.t + abs((is[cj] - dj[cj]) / (dj1[cj] - dj[cj])) * (dj1.t - dj.t);
                          if (t1 >= 0 && t1 <= 1 && t2 >= 0 && t2 <= 1) {
                              if (justCount) {
                                  res++;
                              } else {
                                  res.push({
                                      x: is.x,
                                      y: is.y,
                                      t1: t1,
                                      t2: t2
                                  });
                              }
                          }
                      }
                  }
              }
              return res;
          }
          function pathIntersection(path1, path2) {
              return interPathHelper(path1, path2);
          }
          function pathIntersectionNumber(path1, path2) {
              return interPathHelper(path1, path2, 1);
          }
          function interPathHelper(path1, path2, justCount) {
              path1 = path2curve(path1);
              path2 = path2curve(path2);
              var x1, y1, x2, y2, x1m, y1m, x2m, y2m, bez1, bez2,
                  res = justCount ? 0 : [];
              for (var i = 0, ii = path1.length; i < ii; i++) {
                  var pi = path1[i];
                  if (pi[0] == "M") {
                      x1 = x1m = pi[1];
                      y1 = y1m = pi[2];
                  } else {
                      if (pi[0] == "C") {
                          bez1 = [x1, y1].concat(pi.slice(1));
                          x1 = bez1[6];
                          y1 = bez1[7];
                      } else {
                          bez1 = [x1, y1, x1, y1, x1m, y1m, x1m, y1m];
                          x1 = x1m;
                          y1 = y1m;
                      }
                      for (var j = 0, jj = path2.length; j < jj; j++) {
                          var pj = path2[j];
                          if (pj[0] == "M") {
                              x2 = x2m = pj[1];
                              y2 = y2m = pj[2];
                          } else {
                              if (pj[0] == "C") {
                                  bez2 = [x2, y2].concat(pj.slice(1));
                                  x2 = bez2[6];
                                  y2 = bez2[7];
                              } else {
                                  bez2 = [x2, y2, x2, y2, x2m, y2m, x2m, y2m];
                                  x2 = x2m;
                                  y2 = y2m;
                              }
                              var intr = interHelper(bez1, bez2, justCount);
                              if (justCount) {
                                  res += intr;
                              } else {
                                  for (var k = 0, kk = intr.length; k < kk; k++) {
                                      intr[k].segment1 = i;
                                      intr[k].segment2 = j;
                                      intr[k].bez1 = bez1;
                                      intr[k].bez2 = bez2;
                                  }
                                  res = res.concat(intr);
                              }
                          }
                      }
                  }
              }
              return res;
          }
          function isPointInsidePath(path, x, y) {
              var bbox = pathBBox(path);
              return isPointInsideBBox(bbox, x, y) &&
                  interPathHelper(path, [["M", x, y], ["H", bbox.x2 + 10]], 1) % 2 == 1;
          }
          function pathBBox(path) {
              var pth = paths(path);
              if (pth.bbox) {
                  return clone(pth.bbox);
              }
              if (!path) {
                  return box();
              }
              path = path2curve(path);
              var x = 0,
                  y = 0,
                  X = [],
                  Y = [],
                  p;
              for (var i = 0, ii = path.length; i < ii; i++) {
                  p = path[i];
                  if (p[0] == "M") {
                      x = p[1];
                      y = p[2];
                      X.push(x);
                      Y.push(y);
                  } else {
                      var dim = curveDim(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
                      X = X.concat(dim.min.x, dim.max.x);
                      Y = Y.concat(dim.min.y, dim.max.y);
                      x = p[5];
                      y = p[6];
                  }
              }
              var xmin = mmin.apply(0, X),
                  ymin = mmin.apply(0, Y),
                  xmax = mmax.apply(0, X),
                  ymax = mmax.apply(0, Y),
                  bb = box(xmin, ymin, xmax - xmin, ymax - ymin);
              pth.bbox = clone(bb);
              return bb;
          }
          function rectPath(x, y, w, h, r) {
              if (r) {
                  return [
                      ["M", +x + (+r), y],
                      ["l", w - r * 2, 0],
                      ["a", r, r, 0, 0, 1, r, r],
                      ["l", 0, h - r * 2],
                      ["a", r, r, 0, 0, 1, -r, r],
                      ["l", r * 2 - w, 0],
                      ["a", r, r, 0, 0, 1, -r, -r],
                      ["l", 0, r * 2 - h],
                      ["a", r, r, 0, 0, 1, r, -r],
                      ["z"]
                  ];
              }
              var res = [["M", x, y], ["l", w, 0], ["l", 0, h], ["l", -w, 0], ["z"]];
              res.toString = toString;
              return res;
          }
          function ellipsePath(x, y, rx, ry, a) {
              if (a == null && ry == null) {
                  ry = rx;
              }
              x = +x;
              y = +y;
              rx = +rx;
              ry = +ry;
              if (a != null) {
                  var rad = Math.PI / 180,
                      x1 = x + rx * Math.cos(-ry * rad),
                      x2 = x + rx * Math.cos(-a * rad),
                      y1 = y + rx * Math.sin(-ry * rad),
                      y2 = y + rx * Math.sin(-a * rad),
                      res = [["M", x1, y1], ["A", rx, rx, 0, +(a - ry > 180), 0, x2, y2]];
              } else {
                  res = [
                      ["M", x, y],
                      ["m", 0, -ry],
                      ["a", rx, ry, 0, 1, 1, 0, 2 * ry],
                      ["a", rx, ry, 0, 1, 1, 0, -2 * ry],
                      ["z"]
                  ];
              }
              res.toString = toString;
              return res;
          }
          var unit2px = Snap._unit2px,
              getPath = {
                  path: function (el) {
                      return el.attr("path");
                  },
                  circle: function (el) {
                      var attr = unit2px(el);
                      return ellipsePath(attr.cx, attr.cy, attr.r);
                  },
                  ellipse: function (el) {
                      var attr = unit2px(el);
                      return ellipsePath(attr.cx || 0, attr.cy || 0, attr.rx, attr.ry);
                  },
                  rect: function (el) {
                      var attr = unit2px(el);
                      return rectPath(attr.x || 0, attr.y || 0, attr.width, attr.height, attr.rx, attr.ry);
                  },
                  image: function (el) {
                      var attr = unit2px(el);
                      return rectPath(attr.x || 0, attr.y || 0, attr.width, attr.height);
                  },
                  line: function (el) {
                      return "M" + [el.attr("x1") || 0, el.attr("y1") || 0, el.attr("x2"), el.attr("y2")];
                  },
                  polyline: function (el) {
                      return "M" + el.attr("points");
                  },
                  polygon: function (el) {
                      return "M" + el.attr("points") + "z";
                  },
                  deflt: function (el) {
                      var bbox = el.node.getBBox();
                      return rectPath(bbox.x, bbox.y, bbox.width, bbox.height);
                  }
              };
          function pathToRelative(pathArray) {
              var pth = paths(pathArray),
                  lowerCase = String.prototype.toLowerCase;
              if (pth.rel) {
                  return pathClone(pth.rel);
              }
              if (!Snap.is(pathArray, "array") || !Snap.is(pathArray && pathArray[0], "array")) {
                  pathArray = Snap.parsePathString(pathArray);
              }
              var res = [],
                  x = 0,
                  y = 0,
                  mx = 0,
                  my = 0,
                  start = 0;
              if (pathArray[0][0] == "M") {
                  x = pathArray[0][1];
                  y = pathArray[0][2];
                  mx = x;
                  my = y;
                  start++;
                  res.push(["M", x, y]);
              }
              for (var i = start, ii = pathArray.length; i < ii; i++) {
                  var r = res[i] = [],
                      pa = pathArray[i];
                  if (pa[0] != lowerCase.call(pa[0])) {
                      r[0] = lowerCase.call(pa[0]);
                      switch (r[0]) {
                          case "a":
                              r[1] = pa[1];
                              r[2] = pa[2];
                              r[3] = pa[3];
                              r[4] = pa[4];
                              r[5] = pa[5];
                              r[6] = +(pa[6] - x).toFixed(3);
                              r[7] = +(pa[7] - y).toFixed(3);
                              break;
                          case "v":
                              r[1] = +(pa[1] - y).toFixed(3);
                              break;
                          case "m":
                              mx = pa[1];
                              my = pa[2];
                          default:
                              for (var j = 1, jj = pa.length; j < jj; j++) {
                                  r[j] = +(pa[j] - ((j % 2) ? x : y)).toFixed(3);
                              }
                      }
                  } else {
                      r = res[i] = [];
                      if (pa[0] == "m") {
                          mx = pa[1] + x;
                          my = pa[2] + y;
                      }
                      for (var k = 0, kk = pa.length; k < kk; k++) {
                          res[i][k] = pa[k];
                      }
                  }
                  var len = res[i].length;
                  switch (res[i][0]) {
                      case "z":
                          x = mx;
                          y = my;
                          break;
                      case "h":
                          x += +res[i][len - 1];
                          break;
                      case "v":
                          y += +res[i][len - 1];
                          break;
                      default:
                          x += +res[i][len - 2];
                          y += +res[i][len - 1];
                  }
              }
              res.toString = toString;
              pth.rel = pathClone(res);
              return res;
          }
          function pathToAbsolute(pathArray) {
              var pth = paths(pathArray);
              if (pth.abs) {
                  return pathClone(pth.abs);
              }
              if (!is(pathArray, "array") || !is(pathArray && pathArray[0], "array")) { // rough assumption
                  pathArray = Snap.parsePathString(pathArray);
              }
              if (!pathArray || !pathArray.length) {
                  return [["M", 0, 0]];
              }
              var res = [],
                  x = 0,
                  y = 0,
                  mx = 0,
                  my = 0,
                  start = 0,
                  pa0;
              if (pathArray[0][0] == "M") {
                  x = +pathArray[0][1];
                  y = +pathArray[0][2];
                  mx = x;
                  my = y;
                  start++;
                  res[0] = ["M", x, y];
              }
              var crz = pathArray.length == 3 &&
                  pathArray[0][0] == "M" &&
                  pathArray[1][0].toUpperCase() == "R" &&
                  pathArray[2][0].toUpperCase() == "Z";
              for (var r, pa, i = start, ii = pathArray.length; i < ii; i++) {
                  res.push(r = []);
                  pa = pathArray[i];
                  pa0 = pa[0];
                  if (pa0 != pa0.toUpperCase()) {
                      r[0] = pa0.toUpperCase();
                      switch (r[0]) {
                          case "A":
                              r[1] = pa[1];
                              r[2] = pa[2];
                              r[3] = pa[3];
                              r[4] = pa[4];
                              r[5] = pa[5];
                              r[6] = +pa[6] + x;
                              r[7] = +pa[7] + y;
                              break;
                          case "V":
                              r[1] = +pa[1] + y;
                              break;
                          case "H":
                              r[1] = +pa[1] + x;
                              break;
                          case "R":
                              var dots = [x, y].concat(pa.slice(1));
                              for (var j = 2, jj = dots.length; j < jj; j++) {
                                  dots[j] = +dots[j] + x;
                                  dots[++j] = +dots[j] + y;
                              }
                              res.pop();
                              res = res.concat(catmullRom2bezier(dots, crz));
                              break;
                          case "O":
                              res.pop();
                              dots = ellipsePath(x, y, pa[1], pa[2]);
                              dots.push(dots[0]);
                              res = res.concat(dots);
                              break;
                          case "U":
                              res.pop();
                              res = res.concat(ellipsePath(x, y, pa[1], pa[2], pa[3]));
                              r = ["U"].concat(res[res.length - 1].slice(-2));
                              break;
                          case "M":
                              mx = +pa[1] + x;
                              my = +pa[2] + y;
                          default:
                              for (j = 1, jj = pa.length; j < jj; j++) {
                                  r[j] = +pa[j] + ((j % 2) ? x : y);
                              }
                      }
                  } else if (pa0 == "R") {
                      dots = [x, y].concat(pa.slice(1));
                      res.pop();
                      res = res.concat(catmullRom2bezier(dots, crz));
                      r = ["R"].concat(pa.slice(-2));
                  } else if (pa0 == "O") {
                      res.pop();
                      dots = ellipsePath(x, y, pa[1], pa[2]);
                      dots.push(dots[0]);
                      res = res.concat(dots);
                  } else if (pa0 == "U") {
                      res.pop();
                      res = res.concat(ellipsePath(x, y, pa[1], pa[2], pa[3]));
                      r = ["U"].concat(res[res.length - 1].slice(-2));
                  } else {
                      for (var k = 0, kk = pa.length; k < kk; k++) {
                          r[k] = pa[k];
                      }
                  }
                  pa0 = pa0.toUpperCase();
                  if (pa0 != "O") {
                      switch (r[0]) {
                          case "Z":
                              x = +mx;
                              y = +my;
                              break;
                          case "H":
                              x = r[1];
                              break;
                          case "V":
                              y = r[1];
                              break;
                          case "M":
                              mx = r[r.length - 2];
                              my = r[r.length - 1];
                          default:
                              x = r[r.length - 2];
                              y = r[r.length - 1];
                      }
                  }
              }
              res.toString = toString;
              pth.abs = pathClone(res);
              return res;
          }
          function l2c(x1, y1, x2, y2) {
              return [x1, y1, x2, y2, x2, y2];
          }
          function q2c(x1, y1, ax, ay, x2, y2) {
              var _13 = 1 / 3,
                  _23 = 2 / 3;
              return [
                  _13 * x1 + _23 * ax,
                  _13 * y1 + _23 * ay,
                  _13 * x2 + _23 * ax,
                  _13 * y2 + _23 * ay,
                  x2,
                  y2
              ];
          }
          function a2c(x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
              // for more information of where this math came from visit:
              // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
              var _120 = PI * 120 / 180,
                  rad = PI / 180 * (+angle || 0),
                  res = [],
                  xy,
                  rotate = Snap._.cacher(function (x, y, rad) {
                      var X = x * math.cos(rad) - y * math.sin(rad),
                          Y = x * math.sin(rad) + y * math.cos(rad);
                      return {x: X, y: Y};
                  });
              if (!recursive) {
                  xy = rotate(x1, y1, -rad);
                  x1 = xy.x;
                  y1 = xy.y;
                  xy = rotate(x2, y2, -rad);
                  x2 = xy.x;
                  y2 = xy.y;
                  var cos = math.cos(PI / 180 * angle),
                      sin = math.sin(PI / 180 * angle),
                      x = (x1 - x2) / 2,
                      y = (y1 - y2) / 2;
                  var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
                  if (h > 1) {
                      h = math.sqrt(h);
                      rx = h * rx;
                      ry = h * ry;
                  }
                  var rx2 = rx * rx,
                      ry2 = ry * ry,
                      k = (large_arc_flag == sweep_flag ? -1 : 1) *
                          math.sqrt(abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x))),
                      cx = k * rx * y / ry + (x1 + x2) / 2,
                      cy = k * -ry * x / rx + (y1 + y2) / 2,
                      f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
                      f2 = math.asin(((y2 - cy) / ry).toFixed(9));
  
                  f1 = x1 < cx ? PI - f1 : f1;
                  f2 = x2 < cx ? PI - f2 : f2;
                  f1 < 0 && (f1 = PI * 2 + f1);
                  f2 < 0 && (f2 = PI * 2 + f2);
                  if (sweep_flag && f1 > f2) {
                      f1 = f1 - PI * 2;
                  }
                  if (!sweep_flag && f2 > f1) {
                      f2 = f2 - PI * 2;
                  }
              } else {
                  f1 = recursive[0];
                  f2 = recursive[1];
                  cx = recursive[2];
                  cy = recursive[3];
              }
              var df = f2 - f1;
              if (abs(df) > _120) {
                  var f2old = f2,
                      x2old = x2,
                      y2old = y2;
                  f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
                  x2 = cx + rx * math.cos(f2);
                  y2 = cy + ry * math.sin(f2);
                  res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
              }
              df = f2 - f1;
              var c1 = math.cos(f1),
                  s1 = math.sin(f1),
                  c2 = math.cos(f2),
                  s2 = math.sin(f2),
                  t = math.tan(df / 4),
                  hx = 4 / 3 * rx * t,
                  hy = 4 / 3 * ry * t,
                  m1 = [x1, y1],
                  m2 = [x1 + hx * s1, y1 - hy * c1],
                  m3 = [x2 + hx * s2, y2 - hy * c2],
                  m4 = [x2, y2];
              m2[0] = 2 * m1[0] - m2[0];
              m2[1] = 2 * m1[1] - m2[1];
              if (recursive) {
                  return [m2, m3, m4].concat(res);
              } else {
                  res = [m2, m3, m4].concat(res).join().split(",");
                  var newres = [];
                  for (var i = 0, ii = res.length; i < ii; i++) {
                      newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
                  }
                  return newres;
              }
          }
          function findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
              var t1 = 1 - t;
              return {
                  x: pow(t1, 3) * p1x + pow(t1, 2) * 3 * t * c1x + t1 * 3 * t * t * c2x + pow(t, 3) * p2x,
                  y: pow(t1, 3) * p1y + pow(t1, 2) * 3 * t * c1y + t1 * 3 * t * t * c2y + pow(t, 3) * p2y
              };
          }
  
          // Returns bounding box of cubic bezier curve.
          // Source: http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
          // Original version: NISHIO Hirokazu
          // Modifications: https://github.com/timo22345
          function curveDim(x0, y0, x1, y1, x2, y2, x3, y3) {
              var tvalues = [],
                  bounds = [[], []],
                  a, b, c, t, t1, t2, b2ac, sqrtb2ac;
              for (var i = 0; i < 2; ++i) {
                  if (i == 0) {
                      b = 6 * x0 - 12 * x1 + 6 * x2;
                      a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3;
                      c = 3 * x1 - 3 * x0;
                  } else {
                      b = 6 * y0 - 12 * y1 + 6 * y2;
                      a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3;
                      c = 3 * y1 - 3 * y0;
                  }
                  if (abs(a) < 1e-12) {
                      if (abs(b) < 1e-12) {
                          continue;
                      }
                      t = -c / b;
                      if (0 < t && t < 1) {
                          tvalues.push(t);
                      }
                      continue;
                  }
                  b2ac = b * b - 4 * c * a;
                  sqrtb2ac = math.sqrt(b2ac);
                  if (b2ac < 0) {
                      continue;
                  }
                  t1 = (-b + sqrtb2ac) / (2 * a);
                  if (0 < t1 && t1 < 1) {
                      tvalues.push(t1);
                  }
                  t2 = (-b - sqrtb2ac) / (2 * a);
                  if (0 < t2 && t2 < 1) {
                      tvalues.push(t2);
                  }
              }
  
              var x, y, j = tvalues.length,
                  jlen = j,
                  mt;
              while (j--) {
                  t = tvalues[j];
                  mt = 1 - t;
                  bounds[0][j] = (mt * mt * mt * x0) + (3 * mt * mt * t * x1) + (3 * mt * t * t * x2) + (t * t * t * x3);
                  bounds[1][j] = (mt * mt * mt * y0) + (3 * mt * mt * t * y1) + (3 * mt * t * t * y2) + (t * t * t * y3);
              }
  
              bounds[0][jlen] = x0;
              bounds[1][jlen] = y0;
              bounds[0][jlen + 1] = x3;
              bounds[1][jlen + 1] = y3;
              bounds[0].length = bounds[1].length = jlen + 2;
  
  
              return {
                  min: {x: mmin.apply(0, bounds[0]), y: mmin.apply(0, bounds[1])},
                  max: {x: mmax.apply(0, bounds[0]), y: mmax.apply(0, bounds[1])}
              };
          }
  
          function path2curve(path, path2) {
              var pth = !path2 && paths(path);
              if (!path2 && pth.curve) {
                  return pathClone(pth.curve);
              }
              var p = pathToAbsolute(path),
                  p2 = path2 && pathToAbsolute(path2),
                  attrs = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                  attrs2 = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
                  processPath = function (path, d, pcom) {
                      var nx, ny;
                      if (!path) {
                          return ["C", d.x, d.y, d.x, d.y, d.x, d.y];
                      }
                      !(path[0] in {T: 1, Q: 1}) && (d.qx = d.qy = null);
                      switch (path[0]) {
                          case "M":
                              d.X = path[1];
                              d.Y = path[2];
                              break;
                          case "A":
                              path = ["C"].concat(a2c.apply(0, [d.x, d.y].concat(path.slice(1))));
                              break;
                          case "S":
                              if (pcom == "C" || pcom == "S") { // In "S" case we have to take into account, if the previous command is C/S.
                                  nx = d.x * 2 - d.bx;          // And reflect the previous
                                  ny = d.y * 2 - d.by;          // command's control point relative to the current point.
                              }
                              else {                            // or some else or nothing
                                  nx = d.x;
                                  ny = d.y;
                              }
                              path = ["C", nx, ny].concat(path.slice(1));
                              break;
                          case "T":
                              if (pcom == "Q" || pcom == "T") { // In "T" case we have to take into account, if the previous command is Q/T.
                                  d.qx = d.x * 2 - d.qx;        // And make a reflection similar
                                  d.qy = d.y * 2 - d.qy;        // to case "S".
                              }
                              else {                            // or something else or nothing
                                  d.qx = d.x;
                                  d.qy = d.y;
                              }
                              path = ["C"].concat(q2c(d.x, d.y, d.qx, d.qy, path[1], path[2]));
                              break;
                          case "Q":
                              d.qx = path[1];
                              d.qy = path[2];
                              path = ["C"].concat(q2c(d.x, d.y, path[1], path[2], path[3], path[4]));
                              break;
                          case "L":
                              path = ["C"].concat(l2c(d.x, d.y, path[1], path[2]));
                              break;
                          case "H":
                              path = ["C"].concat(l2c(d.x, d.y, path[1], d.y));
                              break;
                          case "V":
                              path = ["C"].concat(l2c(d.x, d.y, d.x, path[1]));
                              break;
                          case "Z":
                              path = ["C"].concat(l2c(d.x, d.y, d.X, d.Y));
                              break;
                      }
                      return path;
                  },
                  fixArc = function (pp, i) {
                      if (pp[i].length > 7) {
                          pp[i].shift();
                          var pi = pp[i];
                          while (pi.length) {
                              pcoms1[i] = "A"; // if created multiple C:s, their original seg is saved
                              p2 && (pcoms2[i] = "A"); // the same as above
                              pp.splice(i++, 0, ["C"].concat(pi.splice(0, 6)));
                          }
                          pp.splice(i, 1);
                          ii = mmax(p.length, p2 && p2.length || 0);
                      }
                  },
                  fixM = function (path1, path2, a1, a2, i) {
                      if (path1 && path2 && path1[i][0] == "M" && path2[i][0] != "M") {
                          path2.splice(i, 0, ["M", a2.x, a2.y]);
                          a1.bx = 0;
                          a1.by = 0;
                          a1.x = path1[i][1];
                          a1.y = path1[i][2];
                          ii = mmax(p.length, p2 && p2.length || 0);
                      }
                  },
                  pcoms1 = [], // path commands of original path p
                  pcoms2 = [], // path commands of original path p2
                  pfirst = "", // temporary holder for original path command
                  pcom = ""; // holder for previous path command of original path
              for (var i = 0, ii = mmax(p.length, p2 && p2.length || 0); i < ii; i++) {
                  p[i] && (pfirst = p[i][0]); // save current path command
  
                  if (pfirst != "C") // C is not saved yet, because it may be result of conversion
                  {
                      pcoms1[i] = pfirst; // Save current path command
                      i && ( pcom = pcoms1[i - 1]); // Get previous path command pcom
                  }
                  p[i] = processPath(p[i], attrs, pcom); // Previous path command is inputted to processPath
  
                  if (pcoms1[i] != "A" && pfirst == "C") pcoms1[i] = "C"; // A is the only command
                  // which may produce multiple C:s
                  // so we have to make sure that C is also C in original path
  
                  fixArc(p, i); // fixArc adds also the right amount of A:s to pcoms1
  
                  if (p2) { // the same procedures is done to p2
                      p2[i] && (pfirst = p2[i][0]);
                      if (pfirst != "C") {
                          pcoms2[i] = pfirst;
                          i && (pcom = pcoms2[i - 1]);
                      }
                      p2[i] = processPath(p2[i], attrs2, pcom);
  
                      if (pcoms2[i] != "A" && pfirst == "C") {
                          pcoms2[i] = "C";
                      }
  
                      fixArc(p2, i);
                  }
                  fixM(p, p2, attrs, attrs2, i);
                  fixM(p2, p, attrs2, attrs, i);
                  var seg = p[i],
                      seg2 = p2 && p2[i],
                      seglen = seg.length,
                      seg2len = p2 && seg2.length;
                  attrs.x = seg[seglen - 2];
                  attrs.y = seg[seglen - 1];
                  attrs.bx = toFloat(seg[seglen - 4]) || attrs.x;
                  attrs.by = toFloat(seg[seglen - 3]) || attrs.y;
                  attrs2.bx = p2 && (toFloat(seg2[seg2len - 4]) || attrs2.x);
                  attrs2.by = p2 && (toFloat(seg2[seg2len - 3]) || attrs2.y);
                  attrs2.x = p2 && seg2[seg2len - 2];
                  attrs2.y = p2 && seg2[seg2len - 1];
              }
              if (!p2) {
                  pth.curve = pathClone(p);
              }
              return p2 ? [p, p2] : p;
          }
          function mapPath(path, matrix) {
              if (!matrix) {
                  return path;
              }
              var x, y, i, j, ii, jj, pathi;
              path = path2curve(path);
              for (i = 0, ii = path.length; i < ii; i++) {
                  pathi = path[i];
                  for (j = 1, jj = pathi.length; j < jj; j += 2) {
                      x = matrix.x(pathi[j], pathi[j + 1]);
                      y = matrix.y(pathi[j], pathi[j + 1]);
                      pathi[j] = x;
                      pathi[j + 1] = y;
                  }
              }
              return path;
          }
  
          // http://schepers.cc/getting-to-the-point
          function catmullRom2bezier(crp, z) {
              var d = [];
              for (var i = 0, iLen = crp.length; iLen - 2 * !z > i; i += 2) {
                  var p = [
                      {x: +crp[i - 2], y: +crp[i - 1]},
                      {x: +crp[i],     y: +crp[i + 1]},
                      {x: +crp[i + 2], y: +crp[i + 3]},
                      {x: +crp[i + 4], y: +crp[i + 5]}
                  ];
                  if (z) {
                      if (!i) {
                          p[0] = {x: +crp[iLen - 2], y: +crp[iLen - 1]};
                      } else if (iLen - 4 == i) {
                          p[3] = {x: +crp[0], y: +crp[1]};
                      } else if (iLen - 2 == i) {
                          p[2] = {x: +crp[0], y: +crp[1]};
                          p[3] = {x: +crp[2], y: +crp[3]};
                      }
                  } else {
                      if (iLen - 4 == i) {
                          p[3] = p[2];
                      } else if (!i) {
                          p[0] = {x: +crp[i], y: +crp[i + 1]};
                      }
                  }
                  d.push(["C",
                      (-p[0].x + 6 * p[1].x + p[2].x) / 6,
                      (-p[0].y + 6 * p[1].y + p[2].y) / 6,
                      (p[1].x + 6 * p[2].x - p[3].x) / 6,
                      (p[1].y + 6*p[2].y - p[3].y) / 6,
                      p[2].x,
                      p[2].y
                  ]);
              }
  
              return d;
          }
  
          // export
          Snap.path = paths;
  
          /*\
           * Snap.path.getTotalLength
           [ method ]
           **
           * Returns the length of the given path in pixels
           **
           - path (string) SVG path string
           **
           = (number) length
           \*/
          Snap.path.getTotalLength = getTotalLength;
          /*\
           * Snap.path.getPointAtLength
           [ method ]
           **
           * Returns the coordinates of the point located at the given length along the given path
           **
           - path (string) SVG path string
           - length (number) length, in pixels, from the start of the path, excluding non-rendering jumps
           **
           = (object) representation of the point:
           o {
           o     x: (number) x coordinate,
           o     y: (number) y coordinate,
           o     alpha: (number) angle of derivative
           o }
           \*/
          Snap.path.getPointAtLength = getPointAtLength;
          /*\
           * Snap.path.getSubpath
           [ method ]
           **
           * Returns the subpath of a given path between given start and end lengths
           **
           - path (string) SVG path string
           - from (number) length, in pixels, from the start of the path to the start of the segment
           - to (number) length, in pixels, from the start of the path to the end of the segment
           **
           = (string) path string definition for the segment
           \*/
          Snap.path.getSubpath = function (path, from, to) {
              if (this.getTotalLength(path) - to < 1e-6) {
                  return getSubpathsAtLength(path, from).end;
              }
              var a = getSubpathsAtLength(path, to, 1);
              return from ? getSubpathsAtLength(a, from).end : a;
          };
          /*\
           * Element.getTotalLength
           [ method ]
           **
           * Returns the length of the path in pixels (only works for `path` elements)
           = (number) length
           \*/
          elproto.getTotalLength = function () {
              if (this.node.getTotalLength) {
                  return this.node.getTotalLength();
              }
          };
          // SIERRA Element.getPointAtLength()/Element.getTotalLength(): If a <path> is broken into different segments, is the jump distance to the new coordinates set by the _M_ or _m_ commands calculated as part of the path's total length?
          /*\
           * Element.getPointAtLength
           [ method ]
           **
           * Returns coordinates of the point located at the given length on the given path (only works for `path` elements)
           **
           - length (number) length, in pixels, from the start of the path, excluding non-rendering jumps
           **
           = (object) representation of the point:
           o {
           o     x: (number) x coordinate,
           o     y: (number) y coordinate,
           o     alpha: (number) angle of derivative
           o }
           \*/
          elproto.getPointAtLength = function (length) {
              return getPointAtLength(this.attr("d"), length);
          };
          // SIERRA Element.getSubpath(): Similar to the problem for Element.getPointAtLength(). Unclear how this would work for a segmented path. Overall, the concept of _subpath_ and what I'm calling a _segment_ (series of non-_M_ or _Z_ commands) is unclear.
          /*\
           * Element.getSubpath
           [ method ]
           **
           * Returns subpath of a given element from given start and end lengths (only works for `path` elements)
           **
           - from (number) length, in pixels, from the start of the path to the start of the segment
           - to (number) length, in pixels, from the start of the path to the end of the segment
           **
           = (string) path string definition for the segment
           \*/
          elproto.getSubpath = function (from, to) {
              return Snap.path.getSubpath(this.attr("d"), from, to);
          };
          Snap._.box = box;
          /*\
           * Snap.path.findDotsAtSegment
           [ method ]
           **
           * Utility method
           **
           * Finds dot coordinates on the given cubic beziér curve at the given t
           - p1x (number) x of the first point of the curve
           - p1y (number) y of the first point of the curve
           - c1x (number) x of the first anchor of the curve
           - c1y (number) y of the first anchor of the curve
           - c2x (number) x of the second anchor of the curve
           - c2y (number) y of the second anchor of the curve
           - p2x (number) x of the second point of the curve
           - p2y (number) y of the second point of the curve
           - t (number) position on the curve (0..1)
           = (object) point information in format:
           o {
           o     x: (number) x coordinate of the point,
           o     y: (number) y coordinate of the point,
           o     m: {
           o         x: (number) x coordinate of the left anchor,
           o         y: (number) y coordinate of the left anchor
           o     },
           o     n: {
           o         x: (number) x coordinate of the right anchor,
           o         y: (number) y coordinate of the right anchor
           o     },
           o     start: {
           o         x: (number) x coordinate of the start of the curve,
           o         y: (number) y coordinate of the start of the curve
           o     },
           o     end: {
           o         x: (number) x coordinate of the end of the curve,
           o         y: (number) y coordinate of the end of the curve
           o     },
           o     alpha: (number) angle of the curve derivative at the point
           o }
           \*/
          Snap.path.findDotsAtSegment = findDotsAtSegment;
          /*\
           * Snap.path.bezierBBox
           [ method ]
           **
           * Utility method
           **
           * Returns the bounding box of a given cubic beziér curve
           - p1x (number) x of the first point of the curve
           - p1y (number) y of the first point of the curve
           - c1x (number) x of the first anchor of the curve
           - c1y (number) y of the first anchor of the curve
           - c2x (number) x of the second anchor of the curve
           - c2y (number) y of the second anchor of the curve
           - p2x (number) x of the second point of the curve
           - p2y (number) y of the second point of the curve
           * or
           - bez (array) array of six points for beziér curve
           = (object) bounding box
           o {
           o     x: (number) x coordinate of the left top point of the box,
           o     y: (number) y coordinate of the left top point of the box,
           o     x2: (number) x coordinate of the right bottom point of the box,
           o     y2: (number) y coordinate of the right bottom point of the box,
           o     width: (number) width of the box,
           o     height: (number) height of the box
           o }
           \*/
          Snap.path.bezierBBox = bezierBBox;
          /*\
           * Snap.path.isPointInsideBBox
           [ method ]
           **
           * Utility method
           **
           * Returns `true` if given point is inside bounding box
           - bbox (string) bounding box
           - x (string) x coordinate of the point
           - y (string) y coordinate of the point
           = (boolean) `true` if point is inside
           \*/
          Snap.path.isPointInsideBBox = isPointInsideBBox;
          Snap.closest = function (x, y, X, Y) {
              var r = 100,
                  b = box(x - r / 2, y - r / 2, r, r),
                  inside = [],
                  getter = X[0].hasOwnProperty("x") ? function (i) {
                      return {
                          x: X[i].x,
                          y: X[i].y
                      };
                  } : function (i) {
                      return {
                          x: X[i],
                          y: Y[i]
                      };
                  },
                  found = 0;
              while (r <= 1e6 && !found) {
                  for (var i = 0, ii = X.length; i < ii; i++) {
                      var xy = getter(i);
                      if (isPointInsideBBox(b, xy.x, xy.y)) {
                          found++;
                          inside.push(xy);
                          break;
                      }
                  }
                  if (!found) {
                      r *= 2;
                      b = box(x - r / 2, y - r / 2, r, r)
                  }
              }
              if (r == 1e6) {
                  return;
              }
              var len = Infinity,
                  res;
              for (i = 0, ii = inside.length; i < ii; i++) {
                  var l = Snap.len(x, y, inside[i].x, inside[i].y);
                  if (len > l) {
                      len = l;
                      inside[i].len = l;
                      res = inside[i];
                  }
              }
              return res;
          };
          /*\
           * Snap.path.isBBoxIntersect
           [ method ]
           **
           * Utility method
           **
           * Returns `true` if two bounding boxes intersect
           - bbox1 (string) first bounding box
           - bbox2 (string) second bounding box
           = (boolean) `true` if bounding boxes intersect
           \*/
          Snap.path.isBBoxIntersect = isBBoxIntersect;
          /*\
           * Snap.path.intersection
           [ method ]
           **
           * Utility method
           **
           * Finds intersections of two paths
           - path1 (string) path string
           - path2 (string) path string
           = (array) dots of intersection
           o [
           o     {
           o         x: (number) x coordinate of the point,
           o         y: (number) y coordinate of the point,
           o         t1: (number) t value for segment of path1,
           o         t2: (number) t value for segment of path2,
           o         segment1: (number) order number for segment of path1,
           o         segment2: (number) order number for segment of path2,
           o         bez1: (array) eight coordinates representing beziér curve for the segment of path1,
           o         bez2: (array) eight coordinates representing beziér curve for the segment of path2
           o     }
           o ]
           \*/
          Snap.path.intersection = pathIntersection;
          Snap.path.intersectionNumber = pathIntersectionNumber;
          /*\
           * Snap.path.isPointInside
           [ method ]
           **
           * Utility method
           **
           * Returns `true` if given point is inside a given closed path.
           *
           * Note: fill mode doesn’t affect the result of this method.
           - path (string) path string
           - x (number) x of the point
           - y (number) y of the point
           = (boolean) `true` if point is inside the path
           \*/
          Snap.path.isPointInside = isPointInsidePath;
          /*\
           * Snap.path.getBBox
           [ method ]
           **
           * Utility method
           **
           * Returns the bounding box of a given path
           - path (string) path string
           = (object) bounding box
           o {
           o     x: (number) x coordinate of the left top point of the box,
           o     y: (number) y coordinate of the left top point of the box,
           o     x2: (number) x coordinate of the right bottom point of the box,
           o     y2: (number) y coordinate of the right bottom point of the box,
           o     width: (number) width of the box,
           o     height: (number) height of the box
           o }
           \*/
          Snap.path.getBBox = pathBBox;
          Snap.path.get = getPath;
          /*\
           * Snap.path.toRelative
           [ method ]
           **
           * Utility method
           **
           * Converts path coordinates into relative values
           - path (string) path string
           = (array) path string
           \*/
          Snap.path.toRelative = pathToRelative;
          /*\
           * Snap.path.toAbsolute
           [ method ]
           **
           * Utility method
           **
           * Converts path coordinates into absolute values
           - path (string) path string
           = (array) path string
           \*/
          Snap.path.toAbsolute = pathToAbsolute;
          /*\
           * Snap.path.toCubic
           [ method ]
           **
           * Utility method
           **
           * Converts path to a new path where all segments are cubic beziér curves
           - pathString (string|array) path string or array of segments
           = (array) array of segments
           \*/
          Snap.path.toCubic = path2curve;
          /*\
           * Snap.path.map
           [ method ]
           **
           * Transform the path string with the given matrix
           - path (string) path string
           - matrix (object) see @Matrix
           = (string) transformed path string
           \*/
          Snap.path.map = mapPath;
          Snap.path.toString = toString;
          Snap.path.clone = pathClone;
      });
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob) {
          var mmax = Math.max,
              mmin = Math.min;
  
          // Set
          var Set = function (items) {
                  this.items = [];
                  this.bindings = {};
                  this.length = 0;
                  this.type = "set";
                  if (items) {
                      for (var i = 0, ii = items.length; i < ii; i++) {
                          if (items[i]) {
                              this[this.items.length] = this.items[this.items.length] = items[i];
                              this.length++;
                          }
                      }
                  }
              },
              setproto = Set.prototype;
          /*\
           * Set.push
           [ method ]
           **
           * Adds each argument to the current set
           = (object) original element
           \*/
          setproto.push = function () {
              var item,
                  len;
              for (var i = 0, ii = arguments.length; i < ii; i++) {
                  item = arguments[i];
                  if (item) {
                      len = this.items.length;
                      this[len] = this.items[len] = item;
                      this.length++;
                  }
              }
              return this;
          };
          /*\
           * Set.pop
           [ method ]
           **
           * Removes last element and returns it
           = (object) element
           \*/
          setproto.pop = function () {
              this.length && delete this[this.length--];
              return this.items.pop();
          };
          /*\
           * Set.forEach
           [ method ]
           **
           * Executes given function for each element in the set
           *
           * If the function returns `false`, the loop stops running.
           **
           - callback (function) function to run
           - thisArg (object) context object for the callback
           = (object) Set object
           \*/
          setproto.forEach = function (callback, thisArg) {
              for (var i = 0, ii = this.items.length; i < ii; i++) {
                  if (callback.call(thisArg, this.items[i], i) === false) {
                      return this;
                  }
              }
              return this;
          };
          /*\
           * Set.animate
           [ method ]
           **
           * Animates each element in set in sync.
           *
           **
           - attrs (object) key-value pairs of destination attributes
           - duration (number) duration of the animation in milliseconds
           - easing (function) #optional easing function from @mina or custom
           - callback (function) #optional callback function that executes when the animation ends
           * or
           - animation (array) array of animation parameter for each element in set in format `[attrs, duration, easing, callback]`
           > Usage
           | // animate all elements in set to radius 10
           | set.animate({r: 10}, 500, mina.easein);
           | // or
           | // animate first element to radius 10, but second to radius 20 and in different time
           | set.animate([{r: 10}, 500, mina.easein], [{r: 20}, 1500, mina.easein]);
           = (Element) the current element
           \*/
          setproto.animate = function (attrs, ms, easing, callback) {
              if (typeof easing == "function" && !easing.length) {
                  callback = easing;
                  easing = mina.linear;
              }
              if (attrs instanceof Snap._.Animation) {
                  callback = attrs.callback;
                  easing = attrs.easing;
                  ms = easing.dur;
                  attrs = attrs.attr;
              }
              var args = arguments;
              if (Snap.is(attrs, "array") && Snap.is(args[args.length - 1], "array")) {
                  var each = true;
              }
              var begin,
                  handler = function () {
                      if (begin) {
                          this.b = begin;
                      } else {
                          begin = this.b;
                      }
                  },
                  cb = 0,
                  callbacker = callback && function () {
                          if (cb++ == this.length) {
                              callback.call(this);
                          }
                      };
              return this.forEach(function (el, i) {
                  eve.once("snap.animcreated." + el.id, handler);
                  if (each) {
                      args[i] && el.animate.apply(el, args[i]);
                  } else {
                      el.animate(attrs, ms, easing, callbacker);
                  }
              });
          };
          setproto.remove = function () {
              while (this.length) {
                  this.pop().remove();
              }
              return this;
          };
          /*\
           * Set.bind
           [ method ]
           **
           * Specifies how to handle a specific attribute when applied
           * to a set.
           *
           **
           - attr (string) attribute name
           - callback (function) function to run
           * or
           - attr (string) attribute name
           - element (Element) specific element in the set to apply the attribute to
           * or
           - attr (string) attribute name
           - element (Element) specific element in the set to apply the attribute to
           - eattr (string) attribute on the element to bind the attribute to
           = (object) Set object
           \*/
          setproto.bind = function (attr, a, b) {
              var data = {};
              if (typeof a == "function") {
                  this.bindings[attr] = a;
              } else {
                  var aname = b || attr;
                  this.bindings[attr] = function (v) {
                      data[aname] = v;
                      a.attr(data);
                  };
              }
              return this;
          };
          setproto.attr = function (value) {
              var unbound = {};
              for (var k in value) {
                  if (this.bindings[k]) {
                      this.bindings[k](value[k]);
                  } else {
                      unbound[k] = value[k];
                  }
              }
              for (var i = 0, ii = this.items.length; i < ii; i++) {
                  this.items[i].attr(unbound);
              }
              return this;
          };
          /*\
           * Set.clear
           [ method ]
           **
           * Removes all elements from the set
           \*/
          setproto.clear = function () {
              while (this.length) {
                  this.pop();
              }
          };
          /*\
           * Set.splice
           [ method ]
           **
           * Removes range of elements from the set
           **
           - index (number) position of the deletion
           - count (number) number of element to remove
           - insertion… (object) #optional elements to insert
           = (object) set elements that were deleted
           \*/
          setproto.splice = function (index, count, insertion) {
              index = index < 0 ? mmax(this.length + index, 0) : index;
              count = mmax(0, mmin(this.length - index, count));
              var tail = [],
                  todel = [],
                  args = [],
                  i;
              for (i = 2; i < arguments.length; i++) {
                  args.push(arguments[i]);
              }
              for (i = 0; i < count; i++) {
                  todel.push(this[index + i]);
              }
              for (; i < this.length - index; i++) {
                  tail.push(this[index + i]);
              }
              var arglen = args.length;
              for (i = 0; i < arglen + tail.length; i++) {
                  this.items[index + i] = this[index + i] = i < arglen ? args[i] : tail[i - arglen];
              }
              i = this.items.length = this.length -= count - arglen;
              while (this[i]) {
                  delete this[i++];
              }
              return new Set(todel);
          };
          /*\
           * Set.exclude
           [ method ]
           **
           * Removes given element from the set
           **
           - element (object) element to remove
           = (boolean) `true` if object was found and removed from the set
           \*/
          setproto.exclude = function (el) {
              for (var i = 0, ii = this.length; i < ii; i++) if (this[i] == el) {
                  this.splice(i, 1);
                  return true;
              }
              return false;
          };
          setproto.insertAfter = function (el) {
              var i = this.items.length;
              while (i--) {
                  this.items[i].insertAfter(el);
              }
              return this;
          };
          setproto.getBBox = function () {
              var x = [],
                  y = [],
                  x2 = [],
                  y2 = [];
              for (var i = this.items.length; i--;) if (!this.items[i].removed) {
                  var box = this.items[i].getBBox();
                  x.push(box.x);
                  y.push(box.y);
                  x2.push(box.x + box.width);
                  y2.push(box.y + box.height);
              }
              x = mmin.apply(0, x);
              y = mmin.apply(0, y);
              x2 = mmax.apply(0, x2);
              y2 = mmax.apply(0, y2);
              return {
                  x: x,
                  y: y,
                  x2: x2,
                  y2: y2,
                  width: x2 - x,
                  height: y2 - y,
                  cx: x + (x2 - x) / 2,
                  cy: y + (y2 - y) / 2
              };
          };
          setproto.clone = function (s) {
              s = new Set;
              for (var i = 0, ii = this.items.length; i < ii; i++) {
                  s.push(this.items[i].clone());
              }
              return s;
          };
          setproto.toString = function () {
              return "Snap\u2018s set";
          };
          setproto.type = "set";
          // export
          Snap.Set = Set;
          Snap.set = function () {
              var set = new Set;
              if (arguments.length) {
                  set.push.apply(set, Array.prototype.slice.call(arguments, 0));
              }
              return set;
          };
      });
  
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob) {
          var names = {},
              reUnit = /[a-z]+$/i,
              Str = String;
          names.stroke = names.fill = "colour";
          function getEmpty(item) {
              var l = item[0];
              switch (l.toLowerCase()) {
                  case "t": return [l, 0, 0];
                  case "m": return [l, 1, 0, 0, 1, 0, 0];
                  case "r": if (item.length == 4) {
                      return [l, 0, item[2], item[3]];
                  } else {
                      return [l, 0];
                  }
                  case "s": if (item.length == 5) {
                      return [l, 1, 1, item[3], item[4]];
                  } else if (item.length == 3) {
                      return [l, 1, 1];
                  } else {
                      return [l, 1];
                  }
              }
          }
          function equaliseTransform(t1, t2, getBBox) {
              t2 = Str(t2).replace(/\.{3}|\u2026/g, t1);
              t1 = Snap.parseTransformString(t1) || [];
              t2 = Snap.parseTransformString(t2) || [];
              var maxlength = Math.max(t1.length, t2.length),
                  from = [],
                  to = [],
                  i = 0, j, jj,
                  tt1, tt2;
              for (; i < maxlength; i++) {
                  tt1 = t1[i] || getEmpty(t2[i]);
                  tt2 = t2[i] || getEmpty(tt1);
                  if ((tt1[0] != tt2[0]) ||
                      (tt1[0].toLowerCase() == "r" && (tt1[2] != tt2[2] || tt1[3] != tt2[3])) ||
                      (tt1[0].toLowerCase() == "s" && (tt1[3] != tt2[3] || tt1[4] != tt2[4]))
                  ) {
                      t1 = Snap._.transform2matrix(t1, getBBox());
                      t2 = Snap._.transform2matrix(t2, getBBox());
                      from = [["m", t1.a, t1.b, t1.c, t1.d, t1.e, t1.f]];
                      to = [["m", t2.a, t2.b, t2.c, t2.d, t2.e, t2.f]];
                      break;
                  }
                  from[i] = [];
                  to[i] = [];
                  for (j = 0, jj = Math.max(tt1.length, tt2.length); j < jj; j++) {
                      j in tt1 && (from[i][j] = tt1[j]);
                      j in tt2 && (to[i][j] = tt2[j]);
                  }
              }
              return {
                  from: path2array(from),
                  to: path2array(to),
                  f: getPath(from)
              };
          }
          function getNumber(val) {
              return val;
          }
          function getUnit(unit) {
              return function (val) {
                  return +val.toFixed(3) + unit;
              };
          }
          function getColour(clr) {
              return Snap.rgb(clr[0], clr[1], clr[2]);
          }
          function getPath(path) {
              var k = 0, i, ii, j, jj, out, a, b = [];
              for (i = 0, ii = path.length; i < ii; i++) {
                  out = "[";
                  a = ['"' + path[i][0] + '"'];
                  for (j = 1, jj = path[i].length; j < jj; j++) {
                      a[j] = "val[" + (k++) + "]";
                  }
                  out += a + "]";
                  b[i] = out;
              }
              return Function("val", "return Snap.path.toString.call([" + b + "])");
          }
          function path2array(path) {
              var out = [];
              for (var i = 0, ii = path.length; i < ii; i++) {
                  for (var j = 1, jj = path[i].length; j < jj; j++) {
                      out.push(path[i][j]);
                  }
              }
              return out;
          }
          Element.prototype.equal = function (name, b) {
              return eve("snap.util.equal", this, name, b).firstDefined();
          };
          eve.on("snap.util.equal", function (name, b) {
              var A, B, a = Str(this.attr(name) || ""),
                  el = this;
              if (a == +a && b == +b) {
                  return {
                      from: +a,
                      to: +b,
                      f: getNumber
                  };
              }
              if (names[name] == "colour") {
                  A = Snap.color(a);
                  B = Snap.color(b);
                  return {
                      from: [A.r, A.g, A.b, A.opacity],
                      to: [B.r, B.g, B.b, B.opacity],
                      f: getColour
                  };
              }
              if (name == "transform" || name == "gradientTransform" || name == "patternTransform") {
                  if (b instanceof Snap.Matrix) {
                      b = b.toTransformString();
                  }
                  if (!Snap._.rgTransform.test(b)) {
                      b = Snap._.svgTransform2string(b);
                  }
                  return equaliseTransform(a, b, function () {
                      return el.getBBox(1);
                  });
              }
              if (name == "d" || name == "path") {
                  A = Snap.path.toCubic(a, b);
                  return {
                      from: path2array(A[0]),
                      to: path2array(A[1]),
                      f: getPath(A[0])
                  };
              }
              if (name == "points") {
                  A = Str(a).split(Snap._.separator);
                  B = Str(b).split(Snap._.separator);
                  return {
                      from: A,
                      to: B,
                      f: function (val) { return val; }
                  };
              }
              aUnit = a.match(reUnit);
              var bUnit = Str(b).match(reUnit);
              if (aUnit && aUnit == bUnit) {
                  return {
                      from: parseFloat(a),
                      to: parseFloat(b),
                      f: getUnit(aUnit)
                  };
              } else {
                  return {
                      from: this.asPX(name),
                      to: this.asPX(name, b),
                      f: getNumber
                  };
              }
          });
      });
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob) {
          var elproto = Element.prototype,
              has = "hasOwnProperty",
              supportsTouch = "createTouch" in glob.doc,
              events = [
                  "click", "dblclick", "mousedown", "mousemove", "mouseout",
                  "mouseover", "mouseup", "touchstart", "touchmove", "touchend",
                  "touchcancel"
              ],
              touchMap = {
                  mousedown: "touchstart",
                  mousemove: "touchmove",
                  mouseup: "touchend"
              },
              getScroll = function (xy, el) {
                  var name = xy == "y" ? "scrollTop" : "scrollLeft",
                      doc = el && el.node ? el.node.ownerDocument : glob.doc;
                  return doc[name in doc.documentElement ? "documentElement" : "body"][name];
              },
              preventDefault = function () {
                  this.returnValue = false;
              },
              preventTouch = function () {
                  return this.originalEvent.preventDefault();
              },
              stopPropagation = function () {
                  this.cancelBubble = true;
              },
              stopTouch = function () {
                  return this.originalEvent.stopPropagation();
              },
              addEvent = (function () {
                  if (glob.doc.addEventListener) {
                      return function (obj, type, fn, element) {
                          var realName = supportsTouch && touchMap[type] ? touchMap[type] : type,
                              f = function (e) {
                                  var scrollY = getScroll("y", element),
                                      scrollX = getScroll("x", element);
                                  if (supportsTouch && touchMap[has](type)) {
                                      for (var i = 0, ii = e.targetTouches && e.targetTouches.length; i < ii; i++) {
                                          if (e.targetTouches[i].target == obj || obj.contains(e.targetTouches[i].target)) {
                                              var olde = e;
                                              e = e.targetTouches[i];
                                              e.originalEvent = olde;
                                              e.preventDefault = preventTouch;
                                              e.stopPropagation = stopTouch;
                                              break;
                                          }
                                      }
                                  }
                                  var x = e.clientX + scrollX,
                                      y = e.clientY + scrollY;
                                  return fn.call(element, e, x, y);
                              };
  
                          if (type !== realName) {
                              obj.addEventListener(type, f, false);
                          }
  
                          obj.addEventListener(realName, f, false);
  
                          return function () {
                              if (type !== realName) {
                                  obj.removeEventListener(type, f, false);
                              }
  
                              obj.removeEventListener(realName, f, false);
                              return true;
                          };
                      };
                  } else if (glob.doc.attachEvent) {
                      return function (obj, type, fn, element) {
                          var f = function (e) {
                              e = e || element.node.ownerDocument.window.event;
                              var scrollY = getScroll("y", element),
                                  scrollX = getScroll("x", element),
                                  x = e.clientX + scrollX,
                                  y = e.clientY + scrollY;
                              e.preventDefault = e.preventDefault || preventDefault;
                              e.stopPropagation = e.stopPropagation || stopPropagation;
                              return fn.call(element, e, x, y);
                          };
                          obj.attachEvent("on" + type, f);
                          var detacher = function () {
                              obj.detachEvent("on" + type, f);
                              return true;
                          };
                          return detacher;
                      };
                  }
              })(),
              drag = [],
              dragMove = function (e) {
                  var x = e.clientX,
                      y = e.clientY,
                      scrollY = getScroll("y"),
                      scrollX = getScroll("x"),
                      dragi,
                      j = drag.length;
                  while (j--) {
                      dragi = drag[j];
                      if (supportsTouch) {
                          var i = e.touches && e.touches.length,
                              touch;
                          while (i--) {
                              touch = e.touches[i];
                              if (touch.identifier == dragi.el._drag.id || dragi.el.node.contains(touch.target)) {
                                  x = touch.clientX;
                                  y = touch.clientY;
                                  (e.originalEvent ? e.originalEvent : e).preventDefault();
                                  break;
                              }
                          }
                      } else {
                          e.preventDefault();
                      }
                      var node = dragi.el.node,
                          o,
                          next = node.nextSibling,
                          parent = node.parentNode,
                          display = node.style.display;
                      // glob.win.opera && parent.removeChild(node);
                      // node.style.display = "none";
                      // o = dragi.el.paper.getElementByPoint(x, y);
                      // node.style.display = display;
                      // glob.win.opera && (next ? parent.insertBefore(node, next) : parent.appendChild(node));
                      // o && eve("snap.drag.over." + dragi.el.id, dragi.el, o);
                      x += scrollX;
                      y += scrollY;
                      eve("snap.drag.move." + dragi.el.id, dragi.move_scope || dragi.el, x - dragi.el._drag.x, y - dragi.el._drag.y, x, y, e);
                  }
              },
              dragUp = function (e) {
                  Snap.unmousemove(dragMove).unmouseup(dragUp);
                  var i = drag.length,
                      dragi;
                  while (i--) {
                      dragi = drag[i];
                      dragi.el._drag = {};
                      eve("snap.drag.end." + dragi.el.id, dragi.end_scope || dragi.start_scope || dragi.move_scope || dragi.el, e);
                      eve.off("snap.drag.*." + dragi.el.id);
                  }
                  drag = [];
              };
          /*\
           * Element.click
           [ method ]
           **
           * Adds a click event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.unclick
           [ method ]
           **
           * Removes a click event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.dblclick
           [ method ]
           **
           * Adds a double click event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.undblclick
           [ method ]
           **
           * Removes a double click event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.mousedown
           [ method ]
           **
           * Adds a mousedown event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.unmousedown
           [ method ]
           **
           * Removes a mousedown event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.mousemove
           [ method ]
           **
           * Adds a mousemove event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.unmousemove
           [ method ]
           **
           * Removes a mousemove event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.mouseout
           [ method ]
           **
           * Adds a mouseout event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.unmouseout
           [ method ]
           **
           * Removes a mouseout event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.mouseover
           [ method ]
           **
           * Adds a mouseover event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.unmouseover
           [ method ]
           **
           * Removes a mouseover event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.mouseup
           [ method ]
           **
           * Adds a mouseup event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.unmouseup
           [ method ]
           **
           * Removes a mouseup event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.touchstart
           [ method ]
           **
           * Adds a touchstart event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.untouchstart
           [ method ]
           **
           * Removes a touchstart event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.touchmove
           [ method ]
           **
           * Adds a touchmove event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.untouchmove
           [ method ]
           **
           * Removes a touchmove event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.touchend
           [ method ]
           **
           * Adds a touchend event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.untouchend
           [ method ]
           **
           * Removes a touchend event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
  
          /*\
           * Element.touchcancel
           [ method ]
           **
           * Adds a touchcancel event handler to the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          /*\
           * Element.untouchcancel
           [ method ]
           **
           * Removes a touchcancel event handler from the element
           - handler (function) handler for the event
           = (object) @Element
           \*/
          for (var i = events.length; i--;) {
              (function (eventName) {
                  Snap[eventName] = elproto[eventName] = function (fn, scope) {
                      if (Snap.is(fn, "function")) {
                          this.events = this.events || [];
                          this.events.push({
                              name: eventName,
                              f: fn,
                              unbind: addEvent(this.node || document, eventName, fn, scope || this)
                          });
                      } else {
                          for (var i = 0, ii = this.events.length; i < ii; i++) if (this.events[i].name == eventName) {
                              try {
                                  this.events[i].f.call(this);
                              } catch (e) {}
                          }
                      }
                      return this;
                  };
                  Snap["un" + eventName] =
                      elproto["un" + eventName] = function (fn) {
                          var events = this.events || [],
                              l = events.length;
                          while (l--) if (events[l].name == eventName &&
                              (events[l].f == fn || !fn)) {
                              events[l].unbind();
                              events.splice(l, 1);
                              !events.length && delete this.events;
                              return this;
                          }
                          return this;
                      };
              })(events[i]);
          }
          /*\
           * Element.hover
           [ method ]
           **
           * Adds hover event handlers to the element
           - f_in (function) handler for hover in
           - f_out (function) handler for hover out
           - icontext (object) #optional context for hover in handler
           - ocontext (object) #optional context for hover out handler
           = (object) @Element
           \*/
          elproto.hover = function (f_in, f_out, scope_in, scope_out) {
              return this.mouseover(f_in, scope_in).mouseout(f_out, scope_out || scope_in);
          };
          /*\
           * Element.unhover
           [ method ]
           **
           * Removes hover event handlers from the element
           - f_in (function) handler for hover in
           - f_out (function) handler for hover out
           = (object) @Element
           \*/
          elproto.unhover = function (f_in, f_out) {
              return this.unmouseover(f_in).unmouseout(f_out);
          };
          var draggable = [];
          // SIERRA unclear what _context_ refers to for starting, ending, moving the drag gesture.
          // SIERRA Element.drag(): _x position of the mouse_: Where are the x/y values offset from?
          // SIERRA Element.drag(): much of this member's doc appears to be duplicated for some reason.
          // SIERRA Unclear about this sentence: _Additionally following drag events will be triggered: drag.start.<id> on start, drag.end.<id> on end and drag.move.<id> on every move._ Is there a global _drag_ object to which you can assign handlers keyed by an element's ID?
          /*\
           * Element.drag
           [ method ]
           **
           * Adds event handlers for an element's drag gesture
           **
           - onmove (function) handler for moving
           - onstart (function) handler for drag start
           - onend (function) handler for drag end
           - mcontext (object) #optional context for moving handler
           - scontext (object) #optional context for drag start handler
           - econtext (object) #optional context for drag end handler
           * Additionaly following `drag` events are triggered: `drag.start.<id>` on start, 
           * `drag.end.<id>` on end and `drag.move.<id>` on every move. When element is dragged over another element 
           * `drag.over.<id>` fires as well.
           *
           * Start event and start handler are called in specified context or in context of the element with following parameters:
           o x (number) x position of the mouse
           o y (number) y position of the mouse
           o event (object) DOM event object
           * Move event and move handler are called in specified context or in context of the element with following parameters:
           o dx (number) shift by x from the start point
           o dy (number) shift by y from the start point
           o x (number) x position of the mouse
           o y (number) y position of the mouse
           o event (object) DOM event object
           * End event and end handler are called in specified context or in context of the element with following parameters:
           o event (object) DOM event object
           = (object) @Element
           \*/
          elproto.drag = function (onmove, onstart, onend, move_scope, start_scope, end_scope) {
              var el = this;
              if (!arguments.length) {
                  var origTransform;
                  return el.drag(function (dx, dy) {
                      this.attr({
                          transform: origTransform + (origTransform ? "T" : "t") + [dx, dy]
                      });
                  }, function () {
                      origTransform = this.transform().local;
                  });
              }
              function start(e, x, y) {
                  (e.originalEvent || e).preventDefault();
                  el._drag.x = x;
                  el._drag.y = y;
                  el._drag.id = e.identifier;
                  !drag.length && Snap.mousemove(dragMove).mouseup(dragUp);
                  drag.push({el: el, move_scope: move_scope, start_scope: start_scope, end_scope: end_scope});
                  onstart && eve.on("snap.drag.start." + el.id, onstart);
                  onmove && eve.on("snap.drag.move." + el.id, onmove);
                  onend && eve.on("snap.drag.end." + el.id, onend);
                  eve("snap.drag.start." + el.id, start_scope || move_scope || el, x, y, e);
              }
              function init(e, x, y) {
                  eve("snap.draginit." + el.id, el, e, x, y);
              }
              eve.on("snap.draginit." + el.id, start);
              el._drag = {};
              draggable.push({el: el, start: start, init: init});
              el.mousedown(init);
              return el;
          };
          /*
           * Element.onDragOver
           [ method ]
           **
           * Shortcut to assign event handler for `drag.over.<id>` event, where `id` is the element's `id` (see @Element.id)
           - f (function) handler for event, first argument would be the element you are dragging over
           \*/
          // elproto.onDragOver = function (f) {
          //     f ? eve.on("snap.drag.over." + this.id, f) : eve.unbind("snap.drag.over." + this.id);
          // };
          /*\
           * Element.undrag
           [ method ]
           **
           * Removes all drag event handlers from the given element
           \*/
          elproto.undrag = function () {
              var i = draggable.length;
              while (i--) if (draggable[i].el == this) {
                  this.unmousedown(draggable[i].init);
                  draggable.splice(i, 1);
                  eve.unbind("snap.drag.*." + this.id);
                  eve.unbind("snap.draginit." + this.id);
              }
              !draggable.length && Snap.unmousemove(dragMove).unmouseup(dragUp);
              return this;
          };
      });
  // Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  // 
  // http://www.apache.org/licenses/LICENSE-2.0
  // 
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob) {
          var elproto = Element.prototype,
              pproto = Paper.prototype,
              rgurl = /^\s*url\((.+)\)/,
              Str = String,
              $ = Snap._.$;
          Snap.filter = {};
          /*\
           * Paper.filter
           [ method ]
           **
           * Creates a `<filter>` element
           **
           - filstr (string) SVG fragment of filter provided as a string
           = (object) @Element
           * Note: It is recommended to use filters embedded into the page inside an empty SVG element.
           > Usage
           | var f = paper.filter('<feGaussianBlur stdDeviation="2"/>'),
           |     c = paper.circle(10, 10, 10).attr({
           |         filter: f
           |     });
           \*/
          pproto.filter = function (filstr) {
              var paper = this;
              if (paper.type != "svg") {
                  paper = paper.paper;
              }
              var f = Snap.parse(Str(filstr)),
                  id = Snap._.id(),
                  width = paper.node.offsetWidth,
                  height = paper.node.offsetHeight,
                  filter = $("filter");
              $(filter, {
                  id: id,
                  filterUnits: "userSpaceOnUse"
              });
              filter.appendChild(f.node);
              paper.defs.appendChild(filter);
              return new Element(filter);
          };
  
          eve.on("snap.util.getattr.filter", function () {
              eve.stop();
              var p = $(this.node, "filter");
              if (p) {
                  var match = Str(p).match(rgurl);
                  return match && Snap.select(match[1]);
              }
          });
          eve.on("snap.util.attr.filter", function (value) {
              if (value instanceof Element && value.type == "filter") {
                  eve.stop();
                  var id = value.node.id;
                  if (!id) {
                      $(value.node, {id: value.id});
                      id = value.id;
                  }
                  $(this.node, {
                      filter: Snap.url(id)
                  });
              }
              if (!value || value == "none") {
                  eve.stop();
                  this.node.removeAttribute("filter");
              }
          });
          /*\
           * Snap.filter.blur
           [ method ]
           **
           * Returns an SVG markup string for the blur filter
           **
           - x (number) amount of horizontal blur, in pixels
           - y (number) #optional amount of vertical blur, in pixels
           = (string) filter representation
           > Usage
           | var f = paper.filter(Snap.filter.blur(5, 10)),
           |     c = paper.circle(10, 10, 10).attr({
           |         filter: f
           |     });
           \*/
          Snap.filter.blur = function (x, y) {
              if (x == null) {
                  x = 2;
              }
              var def = y == null ? x : [x, y];
              return Snap.format('\<feGaussianBlur stdDeviation="{def}"/>', {
                  def: def
              });
          };
          Snap.filter.blur.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.shadow
           [ method ]
           **
           * Returns an SVG markup string for the shadow filter
           **
           - dx (number) #optional horizontal shift of the shadow, in pixels
           - dy (number) #optional vertical shift of the shadow, in pixels
           - blur (number) #optional amount of blur
           - color (string) #optional color of the shadow
           - opacity (number) #optional `0..1` opacity of the shadow
           * or
           - dx (number) #optional horizontal shift of the shadow, in pixels
           - dy (number) #optional vertical shift of the shadow, in pixels
           - color (string) #optional color of the shadow
           - opacity (number) #optional `0..1` opacity of the shadow
           * which makes blur default to `4`. Or
           - dx (number) #optional horizontal shift of the shadow, in pixels
           - dy (number) #optional vertical shift of the shadow, in pixels
           - opacity (number) #optional `0..1` opacity of the shadow
           = (string) filter representation
           > Usage
           | var f = paper.filter(Snap.filter.shadow(0, 2, 3)),
           |     c = paper.circle(10, 10, 10).attr({
           |         filter: f
           |     });
           \*/
          Snap.filter.shadow = function (dx, dy, blur, color, opacity) {
              if (typeof blur == "string") {
                  color = blur;
                  opacity = color;
                  blur = 4;
              }
              if (typeof color != "string") {
                  opacity = color;
                  color = "#000";
              }
              color = color || "#000";
              if (blur == null) {
                  blur = 4;
              }
              if (opacity == null) {
                  opacity = 1;
              }
              if (dx == null) {
                  dx = 0;
                  dy = 2;
              }
              if (dy == null) {
                  dy = dx;
              }
              color = Snap.color(color);
              return Snap.format('<feGaussianBlur in="SourceAlpha" stdDeviation="{blur}"/><feOffset dx="{dx}" dy="{dy}" result="offsetblur"/><feFlood flood-color="{color}"/><feComposite in2="offsetblur" operator="in"/><feComponentTransfer><feFuncA type="linear" slope="{opacity}"/></feComponentTransfer><feMerge><feMergeNode/><feMergeNode in="SourceGraphic"/></feMerge>', {
                  color: color,
                  dx: dx,
                  dy: dy,
                  blur: blur,
                  opacity: opacity
              });
          };
          Snap.filter.shadow.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.grayscale
           [ method ]
           **
           * Returns an SVG markup string for the grayscale filter
           **
           - amount (number) amount of filter (`0..1`)
           = (string) filter representation
           \*/
          Snap.filter.grayscale = function (amount) {
              if (amount == null) {
                  amount = 1;
              }
              return Snap.format('<feColorMatrix type="matrix" values="{a} {b} {c} 0 0 {d} {e} {f} 0 0 {g} {b} {h} 0 0 0 0 0 1 0"/>', {
                  a: 0.2126 + 0.7874 * (1 - amount),
                  b: 0.7152 - 0.7152 * (1 - amount),
                  c: 0.0722 - 0.0722 * (1 - amount),
                  d: 0.2126 - 0.2126 * (1 - amount),
                  e: 0.7152 + 0.2848 * (1 - amount),
                  f: 0.0722 - 0.0722 * (1 - amount),
                  g: 0.2126 - 0.2126 * (1 - amount),
                  h: 0.0722 + 0.9278 * (1 - amount)
              });
          };
          Snap.filter.grayscale.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.sepia
           [ method ]
           **
           * Returns an SVG markup string for the sepia filter
           **
           - amount (number) amount of filter (`0..1`)
           = (string) filter representation
           \*/
          Snap.filter.sepia = function (amount) {
              if (amount == null) {
                  amount = 1;
              }
              return Snap.format('<feColorMatrix type="matrix" values="{a} {b} {c} 0 0 {d} {e} {f} 0 0 {g} {h} {i} 0 0 0 0 0 1 0"/>', {
                  a: 0.393 + 0.607 * (1 - amount),
                  b: 0.769 - 0.769 * (1 - amount),
                  c: 0.189 - 0.189 * (1 - amount),
                  d: 0.349 - 0.349 * (1 - amount),
                  e: 0.686 + 0.314 * (1 - amount),
                  f: 0.168 - 0.168 * (1 - amount),
                  g: 0.272 - 0.272 * (1 - amount),
                  h: 0.534 - 0.534 * (1 - amount),
                  i: 0.131 + 0.869 * (1 - amount)
              });
          };
          Snap.filter.sepia.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.saturate
           [ method ]
           **
           * Returns an SVG markup string for the saturate filter
           **
           - amount (number) amount of filter (`0..1`)
           = (string) filter representation
           \*/
          Snap.filter.saturate = function (amount) {
              if (amount == null) {
                  amount = 1;
              }
              return Snap.format('<feColorMatrix type="saturate" values="{amount}"/>', {
                  amount: 1 - amount
              });
          };
          Snap.filter.saturate.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.hueRotate
           [ method ]
           **
           * Returns an SVG markup string for the hue-rotate filter
           **
           - angle (number) angle of rotation
           = (string) filter representation
           \*/
          Snap.filter.hueRotate = function (angle) {
              angle = angle || 0;
              return Snap.format('<feColorMatrix type="hueRotate" values="{angle}"/>', {
                  angle: angle
              });
          };
          Snap.filter.hueRotate.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.invert
           [ method ]
           **
           * Returns an SVG markup string for the invert filter
           **
           - amount (number) amount of filter (`0..1`)
           = (string) filter representation
           \*/
          Snap.filter.invert = function (amount) {
              if (amount == null) {
                  amount = 1;
              }
              return Snap.format('<feComponentTransfer><feFuncR type="table" tableValues="{amount} {amount2}"/><feFuncG type="table" tableValues="{amount} {amount2}"/><feFuncB type="table" tableValues="{amount} {amount2}"/></feComponentTransfer>', {
                  amount: amount,
                  amount2: 1 - amount
              });
          };
          Snap.filter.invert.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.brightness
           [ method ]
           **
           * Returns an SVG markup string for the brightness filter
           **
           - amount (number) amount of filter (`0..1`)
           = (string) filter representation
           \*/
          Snap.filter.brightness = function (amount) {
              if (amount == null) {
                  amount = 1;
              }
              return Snap.format('<feComponentTransfer><feFuncR type="linear" slope="{amount}"/><feFuncG type="linear" slope="{amount}"/><feFuncB type="linear" slope="{amount}"/></feComponentTransfer>', {
                  amount: amount
              });
          };
          Snap.filter.brightness.toString = function () {
              return this();
          };
          /*\
           * Snap.filter.contrast
           [ method ]
           **
           * Returns an SVG markup string for the contrast filter
           **
           - amount (number) amount of filter (`0..1`)
           = (string) filter representation
           \*/
          Snap.filter.contrast = function (amount) {
              if (amount == null) {
                  amount = 1;
              }
              return Snap.format('<feComponentTransfer><feFuncR type="linear" slope="{amount}" intercept="{amount2}"/><feFuncG type="linear" slope="{amount}" intercept="{amount2}"/><feFuncB type="linear" slope="{amount}" intercept="{amount2}"/></feComponentTransfer>', {
                  amount: amount,
                  amount2: .5 - amount / 2
              });
          };
          Snap.filter.contrast.toString = function () {
              return this();
          };
      });
  
  // Copyright (c) 2014 Adobe Systems Incorporated. All rights reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  // http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
      Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
          var box = Snap._.box,
              is = Snap.is,
              firstLetter = /^[^a-z]*([tbmlrc])/i,
              toString = function () {
                  return "T" + this.dx + "," + this.dy;
              };
          /*\
           * Element.getAlign
           [ method ]
           **
           * Returns shift needed to align the element relatively to given element.
           * If no elements specified, parent `<svg>` container will be used.
           - el (object) @optional alignment element
           - way (string) one of six values: `"top"`, `"middle"`, `"bottom"`, `"left"`, `"center"`, `"right"`
           = (object|string) Object in format `{dx: , dy: }` also has a string representation as a transformation string
           > Usage
           | el.transform(el.getAlign(el2, "top"));
           * or
           | var dy = el.getAlign(el2, "top").dy;
           \*/
          Element.prototype.getAlign = function (el, way) {
              if (way == null && is(el, "string")) {
                  way = el;
                  el = null;
              }
              el = el || this.paper;
              var bx = el.getBBox ? el.getBBox() : box(el),
                  bb = this.getBBox(),
                  out = {};
              way = way && way.match(firstLetter);
              way = way ? way[1].toLowerCase() : "c";
              switch (way) {
                  case "t":
                      out.dx = 0;
                      out.dy = bx.y - bb.y;
                      break;
                  case "b":
                      out.dx = 0;
                      out.dy = bx.y2 - bb.y2;
                      break;
                  case "m":
                      out.dx = 0;
                      out.dy = bx.cy - bb.cy;
                      break;
                  case "l":
                      out.dx = bx.x - bb.x;
                      out.dy = 0;
                      break;
                  case "r":
                      out.dx = bx.x2 - bb.x2;
                      out.dy = 0;
                      break;
                  default:
                      out.dx = bx.cx - bb.cx;
                      out.dy = 0;
                      break;
              }
              out.toString = toString;
              return out;
          };
          /*\
           * Element.align
           [ method ]
           **
           * Aligns the element relatively to given one via transformation.
           * If no elements specified, parent `<svg>` container will be used.
           - el (object) @optional alignment element
           - way (string) one of six values: `"top"`, `"middle"`, `"bottom"`, `"left"`, `"center"`, `"right"`
           = (object) this element
           > Usage
           | el.align(el2, "top");
           * or
           | el.align("middle");
           \*/
          Element.prototype.align = function (el, way) {
              return this.transform("..." + this.getAlign(el, way));
          };
      });
  
      return Snap;
  }));