var Node = Node || {
  ELEMENT_NODE: 1,
  ATTRIBUTE_NODE: 2,
  TEXT_NODE: 3
};


$.scrollWindowTo = function(pos, duration, cb) {
  if (duration == null) {
    duration = 0;
  }
  if (pos === $(window).scrollTop()) {
    $(window).trigger('scroll');
    if (typeof cb === "function") {
      cb();
    }
    return;
  }
  return $('html, body').animate({
    scrollTop: pos
  }, duration, function() {
    return typeof cb === "function" ? cb() : void 0;
  });
};

(function() {
  var arrays, basicObjects, deepClone, deepExtend, deepExtendCouple, isBasicObject,
    __slice = [].slice;

  deepClone = function(obj) {
    var func, isArr;
    if (!_.isObject(obj || _.isFunction(obj))) {
      return obj;
    }
    if (_.isDate(obj)) {
      return new Date(obj.getTime());
    }
    if (_.isRegExp(obj)) {
      return new RegExp(obj.source, obj.toString().replace(/.*\//, ""));
    }
    isArr = _.isArray(obj || _.isArguments(obj));
    func = function(memo, value, key) {
      if (isArr) {
        memo.push(deepClone(value));
      } else {
        memo[key] = deepClone(value);
      }
      return memo;
    };
    return _.reduce(obj, func, isArr ? [] : {});
  };

  isBasicObject = function(object) {
    if(object === null) return false;
    return (object.prototype === {}.prototype || object.prototype === Object.prototype) && _.isObject(object) && !_.isArray(object) && !_.isFunction(object) && !_.isDate(object) && !_.isRegExp(object) && !_.isArguments(object);
  };

  basicObjects = function(object) {
    return _.filter(_.keys(object), function(key) {
      return isBasicObject(object[key]);
    });
  };

  arrays = function(object) {
    return _.filter(_.keys(object), function(key) {
      return _.isArray(object[key]);
    });
  };

  deepExtendCouple = function(destination, source, maxDepth) {
    var combine, recurse, sharedArrayKey, sharedArrayKeys, sharedObjectKey, sharedObjectKeys, _i, _j, _len, _len1;
    if (maxDepth == null) {
      maxDepth = 20;
    }
    if (maxDepth <= 0) {
      console.warn('_.deepExtend(): Maximum depth of recursion hit.');
      return _.extend(destination, source);
    }
    sharedObjectKeys = _.intersection(basicObjects(destination), basicObjects(source));
    recurse = function(key) {
      return source[key] = deepExtendCouple(destination[key], source[key], maxDepth - 1);
    };
    for (_i = 0, _len = sharedObjectKeys.length; _i < _len; _i++) {
      sharedObjectKey = sharedObjectKeys[_i];
      recurse(sharedObjectKey);
    }
    sharedArrayKeys = _.intersection(arrays(destination), arrays(source));
    combine = function(key) {
      return source[key] = _.union(destination[key], source[key]);
    };
    for (_j = 0, _len1 = sharedArrayKeys.length; _j < _len1; _j++) {
      sharedArrayKey = sharedArrayKeys[_j];
      combine(sharedArrayKey);
    }
    return _.extend(destination, source);
  };

  deepExtend = function() {
    var finalObj, maxDepth, objects, _i;
    objects = 2 <= arguments.length ? __slice.call(arguments, 0, _i = arguments.length - 1) : (_i = 0, []), maxDepth = arguments[_i++];
    if (!_.isNumber(maxDepth)) {
      objects.push(maxDepth);
      maxDepth = 20;
    }
    if (objects.length <= 1) {
      return objects[0];
    }
    if (maxDepth <= 0) {
      return _.extend.apply(this, objects);
    }
    finalObj = objects.shift();
    while (objects.length > 0) {
      finalObj = deepExtendCouple(finalObj, deepClone(objects.shift()), maxDepth);
    }
    return finalObj;
  };

  _.mixin({
    deepClone: deepClone,
    isBasicObject: isBasicObject,
    basicObjects: basicObjects,
    arrays: arrays,
    deepExtend: deepExtend
  });

}).call(this);
// Rivets.js
// version: 0.5.13
// author: Michael Richards
// license: MIT
(function() {
  var Rivets, jQuery,
    __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
    __slice = [].slice,
    __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };

  Rivets = {};

  jQuery = window.jQuery || window.Zepto;

  if (!String.prototype.trim) {
    String.prototype.trim = function() {
      return this.replace(/^\s+|\s+$/g, '');
    };
  }

  Rivets.Binding = (function() {
    function Binding(view, el, type, key, keypath, options) {
      var identifier, regexp, value, _ref;
      this.view = view;
      this.el = el;
      this.type = type;
      this.key = key;
      this.keypath = keypath;
      this.options = options != null ? options : {};
      this.update = __bind(this.update, this);
      this.unbind = __bind(this.unbind, this);
      this.bind = __bind(this.bind, this);
      this.publish = __bind(this.publish, this);
      this.sync = __bind(this.sync, this);
      this.set = __bind(this.set, this);
      this.eventHandler = __bind(this.eventHandler, this);
      this.formattedValue = __bind(this.formattedValue, this);
      if (!(this.binder = this.view.binders[type])) {
        _ref = this.view.binders;
        for (identifier in _ref) {
          value = _ref[identifier];
          if (identifier !== '*' && identifier.indexOf('*') !== -1) {
            regexp = new RegExp("^" + (identifier.replace('*', '.+')) + "$");
            if (regexp.test(type)) {
              this.binder = value;
              this.args = new RegExp("^" + (identifier.replace('*', '(.+)')) + "$").exec(type);
              this.args.shift();
            }
          }
        }
      }
      this.binder || (this.binder = this.view.binders['*']);
      if (this.binder instanceof Function) {
        this.binder = {
          routine: this.binder
        };
      }
      this.formatters = this.options.formatters || [];
      this.model = this.key ? this.view.models[this.key] : this.view.models;
    }

    Binding.prototype.formattedValue = function(value) {
      var args, formatter, id, _i, _len, _ref;
      _ref = this.formatters;
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        formatter = _ref[_i];
        args = formatter.split(/\s+/);
        id = args.shift();
        formatter = this.model[id] instanceof Function ? this.model[id] : this.view.formatters[id];
        if ((formatter != null ? formatter.read : void 0) instanceof Function) {
          value = formatter.read.apply(formatter, [value].concat(__slice.call(args)));
        } else if (formatter instanceof Function) {
          value = formatter.apply(null, [value].concat(__slice.call(args)));
        }
      }
      return value;
    };

    Binding.prototype.eventHandler = function(fn) {
      var binding, handler;
      handler = (binding = this).view.config.handler;
      return function(ev) {
        return handler.call(fn, this, ev, binding);
      };
    };

    Binding.prototype.set = function(value) {
      var _ref;
      value = value instanceof Function && !this.binder["function"] ? this.formattedValue(value.call(this.model)) : this.formattedValue(value);
      return (_ref = this.binder.routine) != null ? _ref.call(this, this.el, value) : void 0;
    };

    Binding.prototype.sync = function() {
      return this.set(this.options.bypass ? this.model[this.keypath] : this.view.config.adapter.read(this.model, this.keypath));
    };

    Binding.prototype.publish = function() {
      var args, formatter, id, value, _i, _len, _ref, _ref1, _ref2;
      value = Rivets.Util.getInputValue(this.el);
      _ref = this.formatters.slice(0).reverse();
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        formatter = _ref[_i];
        args = formatter.split(/\s+/);
        id = args.shift();
        if ((_ref1 = this.view.formatters[id]) != null ? _ref1.publish : void 0) {
          value = (_ref2 = this.view.formatters[id]).publish.apply(_ref2, [value].concat(__slice.call(args)));
        }
      }
      return this.view.config.adapter.publish(this.model, this.keypath, value);
    };

    Binding.prototype.bind = function() {
      var dependency, keypath, model, _i, _len, _ref, _ref1, _ref2, _results;
      if ((_ref = this.binder.bind) != null) {
        _ref.call(this, this.el);
      }
      if (this.options.bypass) {
        this.sync();
      } else {
        this.view.config.adapter.subscribe(this.model, this.keypath, this.sync);
        if (this.view.config.preloadData) {
          this.sync();
        }
      }
      if ((_ref1 = this.options.dependencies) != null ? _ref1.length : void 0) {
        _ref2 = this.options.dependencies;
        _results = [];
        for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
          dependency = _ref2[_i];
          if (/^\./.test(dependency)) {
            model = this.model;
            keypath = dependency.substr(1);
          } else {
            dependency = dependency.split('.');
            model = this.view.models[dependency.shift()];
            keypath = dependency.join('.');
          }
          _results.push(this.view.config.adapter.subscribe(model, keypath, this.sync));
        }
        return _results;
      }
    };

    Binding.prototype.unbind = function() {
      var dependency, keypath, model, _i, _len, _ref, _ref1, _ref2, _results;
      if ((_ref = this.binder.unbind) != null) {
        _ref.call(this, this.el);
      }
      if (!this.options.bypass) {
        this.view.config.adapter.unsubscribe(this.model, this.keypath, this.sync);
      }
      if ((_ref1 = this.options.dependencies) != null ? _ref1.length : void 0) {
        _ref2 = this.options.dependencies;
        _results = [];
        for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
          dependency = _ref2[_i];
          if (/^\./.test(dependency)) {
            model = this.model;
            keypath = dependency.substr(1);
          } else {
            dependency = dependency.split('.');
            model = this.view.models[dependency.shift()];
            keypath = dependency.join('.');
          }
          _results.push(this.view.config.adapter.unsubscribe(model, keypath, this.sync));
        }
        return _results;
      }
    };

    Binding.prototype.update = function(models) {
      var _ref;
      if (models == null) {
        models = {};
      }
      if (this.key) {
        if (models[this.key]) {
          if (!this.options.bypass) {
            this.view.config.adapter.unsubscribe(this.model, this.keypath, this.sync);
          }
          this.model = models[this.key];
          if (this.options.bypass) {
            this.sync();
          } else {
            this.view.config.adapter.subscribe(this.model, this.keypath, this.sync);
            if (this.view.config.preloadData) {
              this.sync();
            }
          }
        }
      } else {
        this.sync();
      }
      return (_ref = this.binder.update) != null ? _ref.call(this, models) : void 0;
    };

    return Binding;

  })();

  Rivets.ComponentBinding = (function(_super) {
    __extends(ComponentBinding, _super);

    function ComponentBinding(view, el, type) {
      var attribute, _i, _len, _ref, _ref1;
      this.view = view;
      this.el = el;
      this.type = type;
      this.unbind = __bind(this.unbind, this);
      this.bind = __bind(this.bind, this);
      this.update = __bind(this.update, this);
      this.locals = __bind(this.locals, this);
      this.component = Rivets.components[this.type];
      this.attributes = {};
      this.inflections = {};
      _ref = this.el.attributes || [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        attribute = _ref[_i];
        if (_ref1 = attribute.name, __indexOf.call(this.component.attributes, _ref1) >= 0) {
          this.attributes[attribute.name] = attribute.value;
        } else {
          this.inflections[attribute.name] = attribute.value;
        }
      }
    }

    ComponentBinding.prototype.sync = function() {};

    ComponentBinding.prototype.locals = function(models) {
      var inverse, key, model, path, result, _i, _len, _ref, _ref1;
      if (models == null) {
        models = this.view.models;
      }
      result = {};
      _ref = this.inflections;
      for (key in _ref) {
        inverse = _ref[key];
        _ref1 = inverse.split('.');
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          path = _ref1[_i];
          result[key] = (result[key] || models)[path];
        }
      }
      for (key in models) {
        model = models[key];
        if (result[key] == null) {
          result[key] = model;
        }
      }
      return result;
    };

    ComponentBinding.prototype.update = function(models) {
      var _ref;
      return (_ref = this.componentView) != null ? _ref.update(this.locals(models)) : void 0;
    };

    ComponentBinding.prototype.bind = function() {
      var el, _ref;
      if (this.componentView != null) {
        return (_ref = this.componentView) != null ? _ref.bind() : void 0;
      } else {
        el = this.component.build.call(this.attributes);
        (this.componentView = new Rivets.View(el, this.locals(), this.view.options)).bind();
        return this.el.parentNode.replaceChild(el, this.el);
      }
    };

    ComponentBinding.prototype.unbind = function() {
      var _ref;
      return (_ref = this.componentView) != null ? _ref.unbind() : void 0;
    };

    return ComponentBinding;

  })(Rivets.Binding);

  Rivets.TextBinding = (function(_super) {
    __extends(TextBinding, _super);

    function TextBinding(view, el, type, key, keypath, options) {
      this.view = view;
      this.el = el;
      this.type = type;
      this.key = key;
      this.keypath = keypath;
      this.options = options != null ? options : {};
      this.sync = __bind(this.sync, this);
      this.formatters = this.options.formatters || [];
      this.model = this.key ? this.view.models[this.key] : this.view.models;
    }

    TextBinding.prototype.binder = {
      routine: function(node, value) {
        return node.data = value != null ? value : '';
      }
    };

    TextBinding.prototype.sync = function() {
      return TextBinding.__super__.sync.apply(this, arguments);
    };

    return TextBinding;

  })(Rivets.Binding);

  Rivets.View = (function() {
    function View(els, models, options) {
      var k, option, v, _base, _i, _len, _ref, _ref1, _ref2;
      this.els = els;
      this.models = models;
      this.options = options != null ? options : {};
      this.update = __bind(this.update, this);
      this.publish = __bind(this.publish, this);
      this.sync = __bind(this.sync, this);
      this.unbind = __bind(this.unbind, this);
      this.bind = __bind(this.bind, this);
      this.select = __bind(this.select, this);
      this.build = __bind(this.build, this);
      this.componentRegExp = __bind(this.componentRegExp, this);
      this.bindingRegExp = __bind(this.bindingRegExp, this);
      if (typeof this.els.length === 'undefined') {
        this.els = [this.els];
      }
      _ref = ['config', 'binders', 'formatters'];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        option = _ref[_i];
        this[option] = {};
        if (this.options[option]) {
          _ref1 = this.options[option];
          for (k in _ref1) {
            v = _ref1[k];
            this[option][k] = v;
          }
        }
        _ref2 = Rivets[option];
        for (k in _ref2) {
          v = _ref2[k];
          if ((_base = this[option])[k] == null) {
            _base[k] = v;
          }
        }
      }
      this.build();
    }

    View.prototype.bindingRegExp = function() {
      var prefix;
      prefix = this.config.prefix;
      if (prefix) {
        return new RegExp("^data-" + prefix + "-");
      } else {
        return /^data-/;
      }
    };

    View.prototype.componentRegExp = function() {
      var _ref, _ref1;
      return new RegExp("^" + ((_ref = (_ref1 = this.config.prefix) != null ? _ref1.toUpperCase() : void 0) != null ? _ref : 'RV') + "-");
    };

    View.prototype.build = function() {
      var bindingRegExp, buildBinding, componentRegExp, el, parse, skipNodes, _i, _len, _ref,
        _this = this;
      this.bindings = [];
      skipNodes = [];
      bindingRegExp = this.bindingRegExp();
      componentRegExp = this.componentRegExp();
      buildBinding = function(binding, node, type, declaration) {
        var context, ctx, dependencies, key, keypath, options, path, pipe, pipes, splitPath;
        options = {};
        pipes = (function() {
          var _i, _len, _ref, _results;
          _ref = declaration.split('|');
          _results = [];
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            pipe = _ref[_i];
            _results.push(pipe.trim());
          }
          return _results;
        })();
        context = (function() {
          var _i, _len, _ref, _results;
          _ref = pipes.shift().split('<');
          _results = [];
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            ctx = _ref[_i];
            _results.push(ctx.trim());
          }
          return _results;
        })();
        path = context.shift();
        splitPath = path.split(/\.|:/);
        options.formatters = pipes;
        options.bypass = path.indexOf(':') !== -1;
        if (splitPath[0]) {
          key = splitPath.shift();
        } else {
          key = null;
          splitPath.shift();
        }
        keypath = splitPath.join('.');
        if (dependencies = context.shift()) {
          options.dependencies = dependencies.split(/\s+/);
        }
        return _this.bindings.push(new Rivets[binding](_this, node, type, key, keypath, options));
      };
      parse = function(node) {
        var attribute, attributes, binder, childNode, delimiters, identifier, n, parser, regexp, restTokens, startToken, text, token, tokens, type, value, _i, _j, _k, _l, _len, _len1, _len2, _len3, _len4, _m, _ref, _ref1, _ref2, _ref3, _ref4, _results;
        if (__indexOf.call(skipNodes, node) < 0) {
          if (node.nodeType === Node.TEXT_NODE) {
            parser = Rivets.TextTemplateParser;
            if (delimiters = _this.config.templateDelimiters) {
              if ((tokens = parser.parse(node.data, delimiters)).length) {
                if (!(tokens.length === 1 && tokens[0].type === parser.types.text)) {
                  startToken = tokens[0], restTokens = 2 <= tokens.length ? __slice.call(tokens, 1) : [];
                  node.data = startToken.value;
                  if (startToken.type === 0) {
                    node.data = startToken.value;
                  } else {
                    buildBinding('TextBinding', node, null, startToken.value);
                  }
                  for (_i = 0, _len = restTokens.length; _i < _len; _i++) {
                    token = restTokens[_i];
                    text = document.createTextNode(token.value);
                    node.parentNode.appendChild(text);
                    if (token.type === 1) {
                      buildBinding('TextBinding', text, null, token.value);
                    }
                  }
                }
              }
            }
          } else if (componentRegExp.test(node.tagName)) {
            type = node.tagName.replace(componentRegExp, '').toLowerCase();
            _this.bindings.push(new Rivets.ComponentBinding(_this, node, type));
          } else if (node.attributes != null) {
            _ref = node.attributes;
            for (_j = 0, _len1 = _ref.length; _j < _len1; _j++) {
              attribute = _ref[_j];
              if (bindingRegExp.test(attribute.name)) {
                type = attribute.name.replace(bindingRegExp, '');
                if (!(binder = _this.binders[type])) {
                  _ref1 = _this.binders;
                  for (identifier in _ref1) {
                    value = _ref1[identifier];
                    if (identifier !== '*' && identifier.indexOf('*') !== -1) {
                      regexp = new RegExp("^" + (identifier.replace('*', '.+')) + "$");
                      if (regexp.test(type)) {
                        binder = value;
                      }
                    }
                  }
                }
                binder || (binder = _this.binders['*']);
                if (binder.block) {
                  _ref2 = node.childNodes;
                  for (_k = 0, _len2 = _ref2.length; _k < _len2; _k++) {
                    n = _ref2[_k];
                    skipNodes.push(n);
                  }
                  attributes = [attribute];
                }
              }
            }
            _ref3 = attributes || node.attributes;
            for (_l = 0, _len3 = _ref3.length; _l < _len3; _l++) {
              attribute = _ref3[_l];
              if (bindingRegExp.test(attribute.name)) {
                type = attribute.name.replace(bindingRegExp, '');
                buildBinding('Binding', node, type, attribute.value);
              }
            }
          }
          _ref4 = node.childNodes;
          _results = [];
          for (_m = 0, _len4 = _ref4.length; _m < _len4; _m++) {
            childNode = _ref4[_m];
            _results.push(parse(childNode));
          }
          return _results;
        }
      };
      _ref = this.els;
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        el = _ref[_i];
        parse(el);
      }
    };

    View.prototype.select = function(fn) {
      var binding, _i, _len, _ref, _results;
      _ref = this.bindings;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        binding = _ref[_i];
        if (fn(binding)) {
          _results.push(binding);
        }
      }
      return _results;
    };

    View.prototype.bind = function() {
      var binding, _i, _len, _ref, _results;
      _ref = this.bindings;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        binding = _ref[_i];
        _results.push(binding.bind());
      }
      return _results;
    };

    View.prototype.unbind = function() {
      var binding, _i, _len, _ref, _results;
      _ref = this.bindings;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        binding = _ref[_i];
        _results.push(binding.unbind());
      }
      return _results;
    };

    View.prototype.sync = function() {
      var binding, _i, _len, _ref, _results;
      _ref = this.bindings;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        binding = _ref[_i];
        _results.push(binding.sync());
      }
      return _results;
    };

    View.prototype.publish = function() {
      var binding, _i, _len, _ref, _results;
      _ref = this.select(function(b) {
        return b.binder.publishes;
      });
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        binding = _ref[_i];
        _results.push(binding.publish());
      }
      return _results;
    };

    View.prototype.update = function(models) {
      var binding, key, model, _i, _len, _ref, _results;
      if (models == null) {
        models = {};
      }
      for (key in models) {
        model = models[key];
        this.models[key] = model;
      }
      _ref = this.bindings;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        binding = _ref[_i];
        _results.push(binding.update(models));
      }
      return _results;
    };

    return View;

  })();

  Rivets.TextTemplateParser = (function() {
    function TextTemplateParser() {}

    TextTemplateParser.types = {
      text: 0,
      binding: 1
    };

    TextTemplateParser.parse = function(template, delimiters) {
      var index, lastIndex, lastToken, length, substring, tokens, value;
      tokens = [];
      length = template.length;
      index = 0;
      lastIndex = 0;
      while (lastIndex < length) {
        index = template.indexOf(delimiters[0], lastIndex);
        if (index < 0) {
          tokens.push({
            type: this.types.text,
            value: template.slice(lastIndex)
          });
          break;
        } else {
          if (index > 0 && lastIndex < index) {
            tokens.push({
              type: this.types.text,
              value: template.slice(lastIndex, index)
            });
          }
          lastIndex = index + 2;
          index = template.indexOf(delimiters[1], lastIndex);
          if (index < 0) {
            substring = template.slice(lastIndex - 2);
            lastToken = tokens[tokens.length - 1];
            if ((lastToken != null ? lastToken.type : void 0) === this.types.text) {
              lastToken.value += substring;
            } else {
              tokens.push({
                type: this.types.text,
                value: substring
              });
            }
            break;
          }
          value = template.slice(lastIndex, index).trim();
          tokens.push({
            type: this.types.binding,
            value: value
          });
          lastIndex = index + 2;
        }
      }
      return tokens;
    };

    return TextTemplateParser;

  })();

  Rivets.Util = {
    bindEvent: function(el, event, handler) {
      if (window.jQuery != null) {
        el = jQuery(el);
        if (el.on != null) {
          return el.on(event, handler);
        } else {
          return el.bind(event, handler);
        }
      } else if (window.addEventListener != null) {
        return el.addEventListener(event, handler, false);
      } else {
        event = 'on' + event;
        return el.attachEvent(event, handler);
      }
    },
    unbindEvent: function(el, event, handler) {
      if (window.jQuery != null) {
        el = jQuery(el);
        if (el.off != null) {
          return el.off(event, handler);
        } else {
          return el.unbind(event, handler);
        }
      } else if (window.removeEventListener != null) {
        return el.removeEventListener(event, handler, false);
      } else {
        event = 'on' + event;
        return el.detachEvent(event, handler);
      }
    },
    getInputValue: function(el) {
      var o, _i, _len, _results;
      if (window.jQuery != null) {
        el = jQuery(el);
        switch (el[0].type) {
          case 'checkbox':
            return el.is(':checked');
          default:
            return el.val();
        }
      } else {
        switch (el.type) {
          case 'checkbox':
            return el.checked;
          case 'select-multiple':
            _results = [];
            for (_i = 0, _len = el.length; _i < _len; _i++) {
              o = el[_i];
              if (o.selected) {
                _results.push(o.value);
              }
            }
            return _results;
            break;
          default:
            return el.value;
        }
      }
    }
  };

  Rivets.binders = {
    enabled: function(el, value) {
      return el.disabled = !value;
    },
    disabled: function(el, value) {
      return el.disabled = !!value;
    },
    checked: {
      publishes: true,
      bind: function(el) {
        return Rivets.Util.bindEvent(el, 'change', this.publish);
      },
      unbind: function(el) {
        return Rivets.Util.unbindEvent(el, 'change', this.publish);
      },
      routine: function(el, value) {
        var _ref;
        if (el.type === 'radio') {
          return el.checked = ((_ref = el.value) != null ? _ref.toString() : void 0) === (value != null ? value.toString() : void 0);
        } else {
          return el.checked = !!value;
        }
      }
    },
    unchecked: {
      publishes: true,
      bind: function(el) {
        return Rivets.Util.bindEvent(el, 'change', this.publish);
      },
      unbind: function(el) {
        return Rivets.Util.unbindEvent(el, 'change', this.publish);
      },
      routine: function(el, value) {
        var _ref;
        if (el.type === 'radio') {
          return el.checked = ((_ref = el.value) != null ? _ref.toString() : void 0) !== (value != null ? value.toString() : void 0);
        } else {
          return el.checked = !value;
        }
      }
    },
    show: function(el, value) {
      return el.style.display = value ? '' : 'none';
    },
    hide: function(el, value) {
      return el.style.display = value ? 'none' : '';
    },
    html: function(el, value) {
      return el.innerHTML = value != null ? value : '';
    },
    value: {
      publishes: true,
      bind: function(el) {
        return Rivets.Util.bindEvent(el, 'change', this.publish);
      },
      unbind: function(el) {
        return Rivets.Util.unbindEvent(el, 'change', this.publish);
      },
      routine: function(el, value) {
        var o, _i, _len, _ref, _ref1, _ref2, _results;
        if (window.jQuery != null) {
          el = jQuery(el);
          if ((value != null ? value.toString() : void 0) !== ((_ref = el.val()) != null ? _ref.toString() : void 0)) {
            return el.val(value != null ? value : '');
          }
        } else {
          if (el.type === 'select-multiple') {
            if (value != null) {
              _results = [];
              for (_i = 0, _len = el.length; _i < _len; _i++) {
                o = el[_i];
                _results.push(o.selected = (_ref1 = o.value, __indexOf.call(value, _ref1) >= 0));
              }
              return _results;
            }
          } else if ((value != null ? value.toString() : void 0) !== ((_ref2 = el.value) != null ? _ref2.toString() : void 0)) {
            return el.value = value != null ? value : '';
          }
        }
      }
    },
    text: function(el, value) {
      if (el.innerText != null) {
        return el.innerText = value != null ? value : '';
      } else {
        return el.textContent = value != null ? value : '';
      }
    },
    "if": {
      block: true,
      bind: function(el) {
        var attr, declaration;
        if (this.marker == null) {
          attr = ['data', this.view.config.prefix, this.type].join('-').replace('--', '-');
          declaration = el.getAttribute(attr);
          this.marker = document.createComment(" rivets: " + this.type + " " + declaration + " ");
          el.removeAttribute(attr);
          el.parentNode.insertBefore(this.marker, el);
          return el.parentNode.removeChild(el);
        }
      },
      unbind: function() {
        var _ref;
        return (_ref = this.nested) != null ? _ref.unbind() : void 0;
      },
      routine: function(el, value) {
        var key, model, models, options, _ref;
        if (!!value === (this.nested == null)) {
          if (value) {
            models = {};
            _ref = this.view.models;
            for (key in _ref) {
              model = _ref[key];
              models[key] = model;
            }
            options = {
              binders: this.view.options.binders,
              formatters: this.view.options.formatters,
              config: this.view.options.config
            };
            (this.nested = new Rivets.View(el, models, options)).bind();
            return this.marker.parentNode.insertBefore(el, this.marker.nextSibling);
          } else {
            el.parentNode.removeChild(el);
            this.nested.unbind();
            return delete this.nested;
          }
        }
      },
      update: function(models) {
        var _ref;
        return (_ref = this.nested) != null ? _ref.update(models) : void 0;
      }
    },
    unless: {
      block: true,
      bind: function(el) {
        return Rivets.binders["if"].bind.call(this, el);
      },
      unbind: function() {
        return Rivets.binders["if"].unbind.call(this);
      },
      routine: function(el, value) {
        return Rivets.binders["if"].routine.call(this, el, !value);
      },
      update: function(models) {
        return Rivets.binders["if"].update.call(this, models);
      }
    },
    "on-*": {
      "function": true,
      unbind: function(el) {
        if (this.handler) {
          return Rivets.Util.unbindEvent(el, this.args[0], this.handler);
        }
      },
      routine: function(el, value) {
        if (this.handler) {
          Rivets.Util.unbindEvent(el, this.args[0], this.handler);
        }
        return Rivets.Util.bindEvent(el, this.args[0], this.handler = this.eventHandler(value));
      }
    },
    "each-*": {
      block: true,
      bind: function(el) {
        var attr;
        if (this.marker == null) {
          attr = ['data', this.view.config.prefix, this.type].join('-').replace('--', '-');
          this.marker = document.createComment(" rivets: " + this.type + " ");
          this.iterated = [];
          el.removeAttribute(attr);
          el.parentNode.insertBefore(this.marker, el);
          return el.parentNode.removeChild(el);
        }
      },
      unbind: function(el) {
        var view, _i, _len, _ref, _results;
        if (this.iterated != null) {
          _ref = this.iterated;
          _results = [];
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            view = _ref[_i];
            _results.push(view.unbind());
          }
          return _results;
        }
      },
      routine: function(el, collection) {
        var data, i, index, k, key, model, modelName, options, previous, template, v, view, _i, _j, _len, _len1, _ref, _ref1, _ref2, _results;
        modelName = this.args[0];
        collection = collection || [];
        if (this.iterated.length > collection.length) {
          _ref = Array(this.iterated.length - collection.length);
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            i = _ref[_i];
            view = this.iterated.pop();
            view.unbind();
            this.marker.parentNode.removeChild(view.els[0]);
          }
        }
        _results = [];
        for (index = _j = 0, _len1 = collection.length; _j < _len1; index = ++_j) {
          model = collection[index];
          data = {};
          data[modelName] = model;
          if (this.iterated[index] == null) {
            _ref1 = this.view.models;
            for (key in _ref1) {
              model = _ref1[key];
              if (data[key] == null) {
                data[key] = model;
              }
            }
            previous = this.iterated.length ? this.iterated[this.iterated.length - 1].els[0] : this.marker;
            options = {
              binders: this.view.options.binders,
              formatters: this.view.options.formatters,
              config: {}
            };
            _ref2 = this.view.options.config;
            for (k in _ref2) {
              v = _ref2[k];
              options.config[k] = v;
            }
            options.config.preloadData = true;
            template = el.cloneNode(true);
            view = new Rivets.View(template, data, options);
            view.bind();
            this.iterated.push(view);
            _results.push(this.marker.parentNode.insertBefore(template, previous.nextSibling));
          } else if (this.iterated[index].models[modelName] !== model) {
            _results.push(this.iterated[index].update(data));
          } else {
            _results.push(void 0);
          }
        }
        return _results;
      },
      update: function(models) {
        var data, key, model, view, _i, _len, _ref, _results;
        data = {};
        for (key in models) {
          model = models[key];
          if (key !== this.args[0]) {
            data[key] = model;
          }
        }
        _ref = this.iterated;
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          view = _ref[_i];
          _results.push(view.update(data));
        }
        return _results;
      }
    },
    "class-*": function(el, value) {
      var elClass;
      elClass = " " + el.className + " ";
      if (!value === (elClass.indexOf(" " + this.args[0] + " ") !== -1)) {
        return el.className = value ? "" + el.className + " " + this.args[0] : elClass.replace(" " + this.args[0] + " ", ' ').trim();
      }
    },
    "*": function(el, value) {
      if (value) {
        return el.setAttribute(this.type, value);
      } else {
        return el.removeAttribute(this.type);
      }
    }
  };

  Rivets.components = {};

  Rivets.config = {
    preloadData: true,
    handler: function(context, ev, binding) {
      return this.call(context, ev, binding.view.models);
    }
  };

  Rivets.formatters = {};

  Rivets.factory = function(exports) {
    exports._ = Rivets;
    exports.binders = Rivets.binders;
    exports.components = Rivets.components;
    exports.formatters = Rivets.formatters;
    exports.config = Rivets.config;
    exports.configure = function(options) {
      var property, value;
      if (options == null) {
        options = {};
      }
      for (property in options) {
        value = options[property];
        Rivets.config[property] = value;
      }
    };
    return exports.bind = function(el, models, options) {
      var view;
      if (models == null) {
        models = {};
      }
      if (options == null) {
        options = {};
      }
      view = new Rivets.View(el, models, options);
      view.bind();
      return view;
    };
  };

  if (typeof exports === 'object') {
    Rivets.factory(exports);
  } else if (typeof define === 'function' && define.amd) {
    define(['exports'], function(exports) {
      Rivets.factory(this.rivets = exports);
      return exports;
    });
  } else {
    Rivets.factory(this.rivets = {});
  }

}).call(this);

//     Backbone.js 1.1.2

//     (c) 2010-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Backbone may be freely distributed under the MIT license.
//     For all details and documentation:
//     http://backbonejs.org

(function(root, factory) {

  // Set up Backbone appropriately for the environment. Start with AMD.
  if (typeof define === 'function' && define.amd) {
    define(['underscore', 'jquery', 'exports'], function(_, $, exports) {
      // Export global even in AMD case in case this script is loaded with
      // others that may still expect a global Backbone.
      root.Backbone = factory(root, exports, _, $);
    });

  // Next for Node.js or CommonJS. jQuery may not be needed as a module.
  } else if (typeof exports !== 'undefined') {
    var _ = require('underscore');
    factory(root, exports, _);

  // Finally, as a browser global.
  } else {
    root.Backbone = factory(root, {}, root._, (root.jQuery || root.Zepto || root.ender || root.$));
  }

}(this, function(root, Backbone, _, $) {

  // Initial Setup
  // -------------

  // Save the previous value of the `Backbone` variable, so that it can be
  // restored later on, if `noConflict` is used.
  var previousBackbone = root.Backbone;

  // Create local references to array methods we'll want to use later.
  var array = [];
  var push = array.push;
  var slice = array.slice;
  var splice = array.splice;

  // Current version of the library. Keep in sync with `package.json`.
  Backbone.VERSION = '1.1.2';

  // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns
  // the `$` variable.
  Backbone.$ = $;

  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
  // to its previous owner. Returns a reference to this Backbone object.
  Backbone.noConflict = function() {
    root.Backbone = previousBackbone;
    return this;
  };

  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
  // will fake `"PATCH"`, `"PUT"` and `"DELETE"` requests via the `_method` parameter and
  // set a `X-Http-Method-Override` header.
  Backbone.emulateHTTP = false;

  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
  // `application/json` requests ... will encode the body as
  // `application/x-www-form-urlencoded` instead and will send the model in a
  // form param named `model`.
  Backbone.emulateJSON = false;

  // Backbone.Events
  // ---------------

  // A module that can be mixed in to *any object* in order to provide it with
  // custom events. You may bind with `on` or remove with `off` callback
  // functions to an event; `trigger`-ing an event fires all callbacks in
  // succession.
  //
  //     var object = {};
  //     _.extend(object, Backbone.Events);
  //     object.on('expand', function(){ alert('expanded'); });
  //     object.trigger('expand');
  //
  var Events = Backbone.Events = {

    // Bind an event to a `callback` function. Passing `"all"` will bind
    // the callback to all events fired.
    on: function(name, callback, context) {
      if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
      this._events || (this._events = {});
      var events = this._events[name] || (this._events[name] = []);
      events.push({callback: callback, context: context, ctx: context || this});
      return this;
    },

    // Bind an event to only be triggered a single time. After the first time
    // the callback is invoked, it will be removed.
    once: function(name, callback, context) {
      if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
      var self = this;
      var once = _.once(function() {
        self.off(name, once);
        callback.apply(this, arguments);
      });
      once._callback = callback;
      return this.on(name, once, context);
    },

    // Remove one or many callbacks. If `context` is null, removes all
    // callbacks with that function. If `callback` is null, removes all
    // callbacks for the event. If `name` is null, removes all bound
    // callbacks for all events.
    off: function(name, callback, context) {
      var retain, ev, events, names, i, l, j, k;
      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
      if (!name && !callback && !context) {
        this._events = void 0;
        return this;
      }
      names = name ? [name] : _.keys(this._events);
      for (i = 0, l = names.length; i < l; i++) {
        name = names[i];
        if (events = this._events[name]) {
          this._events[name] = retain = [];
          if (callback || context) {
            for (j = 0, k = events.length; j < k; j++) {
              ev = events[j];
              if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
                  (context && context !== ev.context)) {
                retain.push(ev);
              }
            }
          }
          if (!retain.length) delete this._events[name];
        }
      }

      return this;
    },

    // Trigger one or many events, firing all bound callbacks. Callbacks are
    // passed the same arguments as `trigger` is, apart from the event name
    // (unless you're listening on `"all"`, which will cause your callback to
    // receive the true name of the event as the first argument).
    trigger: function(name) {
      if (!this._events) return this;
      var args = slice.call(arguments, 1);
      if (!eventsApi(this, 'trigger', name, args)) return this;
      var events = this._events[name];
      var allEvents = this._events.all;
      if (events) triggerEvents(events, args);
      if (allEvents) triggerEvents(allEvents, arguments);
      return this;
    },

    // Tell this object to stop listening to either specific events ... or
    // to every object it's currently listening to.
    stopListening: function(obj, name, callback) {
      var listeningTo = this._listeningTo;
      if (!listeningTo) return this;
      var remove = !name && !callback;
      if (!callback && typeof name === 'object') callback = this;
      if (obj) (listeningTo = {})[obj._listenId] = obj;
      for (var id in listeningTo) {
        obj = listeningTo[id];
        obj.off(name, callback, this);
        if (remove || _.isEmpty(obj._events)) delete this._listeningTo[id];
      }
      return this;
    }

  };

  // Regular expression used to split event strings.
  var eventSplitter = /\s+/;

  // Implement fancy features of the Events API such as multiple event
  // names `"change blur"` and jQuery-style event maps `{change: action}`
  // in terms of the existing API.
  var eventsApi = function(obj, action, name, rest) {
    if (!name) return true;

    // Handle event maps.
    if (typeof name === 'object') {
      for (var key in name) {
        obj[action].apply(obj, [key, name[key]].concat(rest));
      }
      return false;
    }

    // Handle space separated event names.
    if (eventSplitter.test(name)) {
      var names = name.split(eventSplitter);
      for (var i = 0, l = names.length; i < l; i++) {
        obj[action].apply(obj, [names[i]].concat(rest));
      }
      return false;
    }

    return true;
  };

  // A difficult-to-believe, but optimized internal dispatch function for
  // triggering events. Tries to keep the usual cases speedy (most internal
  // Backbone events have 3 arguments).
  var triggerEvents = function(events, args) {
    var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
    switch (args.length) {
      case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
      case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
      case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
      case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
      default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args); return;
    }
  };

  var listenMethods = {listenTo: 'on', listenToOnce: 'once'};

  // Inversion-of-control versions of `on` and `once`. Tell *this* object to
  // listen to an event in another object ... keeping track of what it's
  // listening to.
  _.each(listenMethods, function(implementation, method) {
    Events[method] = function(obj, name, callback) {
      var listeningTo = this._listeningTo || (this._listeningTo = {});
      var id = obj._listenId || (obj._listenId = _.uniqueId('l'));
      listeningTo[id] = obj;
      if (!callback && typeof name === 'object') callback = this;
      obj[implementation](name, callback, this);
      return this;
    };
  });

  // Aliases for backwards compatibility.
  Events.bind   = Events.on;
  Events.unbind = Events.off;

  // Allow the `Backbone` object to serve as a global event bus, for folks who
  // want global "pubsub" in a convenient place.
  _.extend(Backbone, Events);

  // Backbone.Model
  // --------------

  // Backbone **Models** are the basic data object in the framework --
  // frequently representing a row in a table in a database on your server.
  // A discrete chunk of data and a bunch of useful, related methods for
  // performing computations and transformations on that data.

  // Create a new model with the specified attributes. A client id (`cid`)
  // is automatically generated and assigned for you.
  var Model = Backbone.Model = function(attributes, options) {
    var attrs = attributes || {};
    options || (options = {});
    this.cid = _.uniqueId('c');
    this.attributes = {};
    if (options.collection) this.collection = options.collection;
    if (options.parse) attrs = this.parse(attrs, options) || {};
    attrs = _.defaults({}, attrs, _.result(this, 'defaults'));
    this.set(attrs, options);
    this.changed = {};
    this.initialize.apply(this, arguments);
  };

  // Attach all inheritable methods to the Model prototype.
  _.extend(Model.prototype, Events, {

    // A hash of attributes whose current and previous value differ.
    changed: null,

    // The value returned during the last failed validation.
    validationError: null,

    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
    // CouchDB users may want to set this to `"_id"`.
    idAttribute: 'id',

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // Return a copy of the model's `attributes` object.
    toJSON: function(options) {
      return _.clone(this.attributes);
    },

    // Proxy `Backbone.sync` by default -- but override this if you need
    // custom syncing semantics for *this* particular model.
    sync: function() {
      return Backbone.sync.apply(this, arguments);
    },

    // Get the value of an attribute.
    get: function(attr) {
      return this.attributes[attr];
    },

    // Get the HTML-escaped value of an attribute.
    escape: function(attr) {
      return _.escape(this.get(attr));
    },

    // Returns `true` if the attribute contains a value that is not null
    // or undefined.
    has: function(attr) {
      return this.get(attr) != null;
    },

    // Set a hash of model attributes on the object, firing `"change"`. This is
    // the core primitive operation of a model, updating the data and notifying
    // anyone who needs to know about the change in state. The heart of the beast.
    set: function(key, val, options) {
      var attr, attrs, unset, changes, silent, changing, prev, current;
      if (key == null) return this;

      // Handle both `"key", value` and `{key: value}` -style arguments.
      if (typeof key === 'object') {
        attrs = key;
        options = val;
      } else {
        (attrs = {})[key] = val;
      }

      options || (options = {});

      // Run validation.
      if (!this._validate(attrs, options)) return false;

      // Extract attributes and options.
      unset           = options.unset;
      silent          = options.silent;
      changes         = [];
      changing        = this._changing;
      this._changing  = true;

      if (!changing) {
        this._previousAttributes = _.clone(this.attributes);
        this.changed = {};
      }
      current = this.attributes, prev = this._previousAttributes;

      // Check for changes of `id`.
      if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];

      // For each `set` attribute, update or delete the current value.
      for (attr in attrs) {
        val = attrs[attr];
        if (!_.isEqual(current[attr], val)) changes.push(attr);
        if (!_.isEqual(prev[attr], val)) {
          this.changed[attr] = val;
        } else {
          delete this.changed[attr];
        }
        unset ? delete current[attr] : current[attr] = val;
      }

      // Trigger all relevant attribute changes.
      if (!silent) {
        if (changes.length) this._pending = options;
        for (var i = 0, l = changes.length; i < l; i++) {
          this.trigger('change:' + changes[i], this, current[changes[i]], options);
        }
      }

      // You might be wondering why there's a `while` loop here. Changes can
      // be recursively nested within `"change"` events.
      if (changing) return this;
      if (!silent) {
        while (this._pending) {
          options = this._pending;
          this._pending = false;
          this.trigger('change', this, options);
        }
      }
      this._pending = false;
      this._changing = false;
      return this;
    },

    // Remove an attribute from the model, firing `"change"`. `unset` is a noop
    // if the attribute doesn't exist.
    unset: function(attr, options) {
      return this.set(attr, void 0, _.extend({}, options, {unset: true}));
    },

    // Clear all attributes on the model, firing `"change"`.
    clear: function(options) {
      var attrs = {};
      for (var key in this.attributes) attrs[key] = void 0;
      return this.set(attrs, _.extend({}, options, {unset: true}));
    },

    // Determine if the model has changed since the last `"change"` event.
    // If you specify an attribute name, determine if that attribute has changed.
    hasChanged: function(attr) {
      if (attr == null) return !_.isEmpty(this.changed);
      return _.has(this.changed, attr);
    },

    // Return an object containing all the attributes that have changed, or
    // false if there are no changed attributes. Useful for determining what
    // parts of a view need to be updated and/or what attributes need to be
    // persisted to the server. Unset attributes will be set to undefined.
    // You can also pass an attributes object to diff against the model,
    // determining if there *would be* a change.
    changedAttributes: function(diff) {
      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
      var val, changed = false;
      var old = this._changing ? this._previousAttributes : this.attributes;
      for (var attr in diff) {
        if (_.isEqual(old[attr], (val = diff[attr]))) continue;
        (changed || (changed = {}))[attr] = val;
      }
      return changed;
    },

    // Get the previous value of an attribute, recorded at the time the last
    // `"change"` event was fired.
    previous: function(attr) {
      if (attr == null || !this._previousAttributes) return null;
      return this._previousAttributes[attr];
    },

    // Get all of the attributes of the model at the time of the previous
    // `"change"` event.
    previousAttributes: function() {
      return _.clone(this._previousAttributes);
    },

    // Fetch the model from the server. If the server's representation of the
    // model differs from its current attributes, they will be overridden,
    // triggering a `"change"` event.
    fetch: function(options) {
      options = options ? _.clone(options) : {};
      if (options.parse === void 0) options.parse = true;
      var model = this;
      var success = options.success;
      options.success = function(resp) {
        if (!model.set(model.parse(resp, options), options)) return false;
        if (success) success(model, resp, options);
        model.trigger('sync', model, resp, options);
      };
      wrapError(this, options);
      return this.sync('read', this, options);
    },

    // Set a hash of model attributes, and sync the model to the server.
    // If the server returns an attributes hash that differs, the model's
    // state will be `set` again.
    save: function(key, val, options) {
      var attrs, method, xhr, attributes = this.attributes;

      // Handle both `"key", value` and `{key: value}` -style arguments.
      if (key == null || typeof key === 'object') {
        attrs = key;
        options = val;
      } else {
        (attrs = {})[key] = val;
      }

      options = _.extend({validate: true}, options);

      // If we're not waiting and attributes exist, save acts as
      // `set(attr).save(null, opts)` with validation. Otherwise, check if
      // the model will be valid when the attributes, if any, are set.
      if (attrs && !options.wait) {
        if (!this.set(attrs, options)) return false;
      } else {
        if (!this._validate(attrs, options)) return false;
      }

      // Set temporary attributes if `{wait: true}`.
      if (attrs && options.wait) {
        this.attributes = _.extend({}, attributes, attrs);
      }

      // After a successful server-side save, the client is (optionally)
      // updated with the server-side state.
      if (options.parse === void 0) options.parse = true;
      var model = this;
      var success = options.success;
      options.success = function(resp) {
        // Ensure attributes are restored during synchronous saves.
        model.attributes = attributes;
        var serverAttrs = model.parse(resp, options);
        if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
        if (_.isObject(serverAttrs) && !model.set(serverAttrs, options)) {
          return false;
        }
        if (success) success(model, resp, options);
        model.trigger('sync', model, resp, options);
      };
      wrapError(this, options);

      method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update');
      if (method === 'patch') options.attrs = attrs;
      xhr = this.sync(method, this, options);

      // Restore attributes.
      if (attrs && options.wait) this.attributes = attributes;

      return xhr;
    },

    // Destroy this model on the server if it was already persisted.
    // Optimistically removes the model from its collection, if it has one.
    // If `wait: true` is passed, waits for the server to respond before removal.
    destroy: function(options) {
      options = options ? _.clone(options) : {};
      var model = this;
      var success = options.success;

      var destroy = function() {
        model.trigger('destroy', model, model.collection, options);
      };

      options.success = function(resp) {
        if (options.wait || model.isNew()) destroy();
        if (success) success(model, resp, options);
        if (!model.isNew()) model.trigger('sync', model, resp, options);
      };

      if (this.isNew()) {
        options.success();
        return false;
      }
      wrapError(this, options);

      var xhr = this.sync('delete', this, options);
      if (!options.wait) destroy();
      return xhr;
    },

    // Default URL for the model's representation on the server -- if you're
    // using Backbone's restful methods, override this to change the endpoint
    // that will be called.
    url: function() {
      var base =
        _.result(this, 'urlRoot') ||
        _.result(this.collection, 'url') ||
        urlError();
      if (this.isNew()) return base;
      return base.replace(/([^\/])$/, '$1/') + encodeURIComponent(this.id);
    },

    // **parse** converts a response into the hash of attributes to be `set` on
    // the model. The default implementation is just to pass the response along.
    parse: function(resp, options) {
      return resp;
    },

    // Create a new model with identical attributes to this one.
    clone: function() {
      return new this.constructor(this.attributes);
    },

    // A model is new if it has never been saved to the server, and lacks an id.
    isNew: function() {
      return !this.has(this.idAttribute);
    },

    // Check if the model is currently in a valid state.
    isValid: function(options) {
      return this._validate({}, _.extend(options || {}, { validate: true }));
    },

    // Run validation against the next complete set of model attributes,
    // returning `true` if all is well. Otherwise, fire an `"invalid"` event.
    _validate: function(attrs, options) {
      if (!options.validate || !this.validate) return true;
      attrs = _.extend({}, this.attributes, attrs);
      var error = this.validationError = this.validate(attrs, options) || null;
      if (!error) return true;
      this.trigger('invalid', this, error, _.extend(options, {validationError: error}));
      return false;
    }

  });

  // Underscore methods that we want to implement on the Model.
  var modelMethods = ['keys', 'values', 'pairs', 'invert', 'pick', 'omit'];

  // Mix in each Underscore method as a proxy to `Model#attributes`.
  _.each(modelMethods, function(method) {
    Model.prototype[method] = function() {
      var args = slice.call(arguments);
      args.unshift(this.attributes);
      return _[method].apply(_, args);
    };
  });

  // Backbone.Collection
  // -------------------

  // If models tend to represent a single row of data, a Backbone Collection is
  // more analagous to a table full of data ... or a small slice or page of that
  // table, or a collection of rows that belong together for a particular reason
  // -- all of the messages in this particular folder, all of the documents
  // belonging to this particular author, and so on. Collections maintain
  // indexes of their models, both in order, and for lookup by `id`.

  // Create a new **Collection**, perhaps to contain a specific type of `model`.
  // If a `comparator` is specified, the Collection will maintain
  // its models in sort order, as they're added and removed.
  var Collection = Backbone.Collection = function(models, options) {
    options || (options = {});
    if (options.model) this.model = options.model;
    if (options.comparator !== void 0) this.comparator = options.comparator;
    this._reset();
    this.initialize.apply(this, arguments);
    if (models) this.reset(models, _.extend({silent: true}, options));
  };

  // Default options for `Collection#set`.
  var setOptions = {add: true, remove: true, merge: true};
  var addOptions = {add: true, remove: false};

  // Define the Collection's inheritable methods.
  _.extend(Collection.prototype, Events, {

    // The default model for a collection is just a **Backbone.Model**.
    // This should be overridden in most cases.
    model: Model,

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // The JSON representation of a Collection is an array of the
    // models' attributes.
    toJSON: function(options) {
      return this.map(function(model){ return model.toJSON(options); });
    },

    // Proxy `Backbone.sync` by default.
    sync: function() {
      return Backbone.sync.apply(this, arguments);
    },

    // Add a model, or list of models to the set.
    add: function(models, options) {
      return this.set(models, _.extend({merge: false}, options, addOptions));
    },

    // Remove a model, or a list of models from the set.
    remove: function(models, options) {
      var singular = !_.isArray(models);
      models = singular ? [models] : _.clone(models);
      options || (options = {});
      var i, l, index, model;
      for (i = 0, l = models.length; i < l; i++) {
        model = models[i] = this.get(models[i]);
        if (!model) continue;
        delete this._byId[model.id];
        delete this._byId[model.cid];
        index = this.indexOf(model);
        this.models.splice(index, 1);
        this.length--;
        if (!options.silent) {
          options.index = index;
          model.trigger('remove', model, this, options);
        }
        this._removeReference(model, options);
      }
      return singular ? models[0] : models;
    },

    // Update a collection by `set`-ing a new list of models, adding new ones,
    // removing models that are no longer present, and merging models that
    // already exist in the collection, as necessary. Similar to **Model#set**,
    // the core operation for updating the data contained by the collection.
    set: function(models, options) {
      options = _.defaults({}, options, setOptions);
      if (options.parse) models = this.parse(models, options);
      var singular = !_.isArray(models);
      models = singular ? (models ? [models] : []) : _.clone(models);
      var i, l, id, model, attrs, existing, sort;
      var at = options.at;
      var targetModel = this.model;
      var sortable = this.comparator && (at == null) && options.sort !== false;
      var sortAttr = _.isString(this.comparator) ? this.comparator : null;
      var toAdd = [], toRemove = [], modelMap = {};
      var add = options.add, merge = options.merge, remove = options.remove;
      var order = !sortable && add && remove ? [] : false;

      // Turn bare objects into model references, and prevent invalid models
      // from being added.
      for (i = 0, l = models.length; i < l; i++) {
        attrs = models[i] || {};
        if (attrs instanceof Model) {
          id = model = attrs;
        } else {
          id = attrs[targetModel.prototype.idAttribute || 'id'];
        }

        // If a duplicate is found, prevent it from being added and
        // optionally merge it into the existing model.
        if (existing = this.get(id)) {
          if (remove) modelMap[existing.cid] = true;
          if (merge) {
            attrs = attrs === model ? model.attributes : attrs;
            if (options.parse) attrs = existing.parse(attrs, options);
            existing.set(attrs, options);
            if (sortable && !sort && existing.hasChanged(sortAttr)) sort = true;
          }
          models[i] = existing;

        // If this is a new, valid model, push it to the `toAdd` list.
        } else if (add) {
          model = models[i] = this._prepareModel(attrs, options);
          if (!model) continue;
          toAdd.push(model);
          this._addReference(model, options);
        }

        // Do not add multiple models with the same `id`.
        model = existing || model;
        if (order && (model.isNew() || !modelMap[model.id])) order.push(model);
        modelMap[model.id] = true;
      }

      // Remove nonexistent models if appropriate.
      if (remove) {
        for (i = 0, l = this.length; i < l; ++i) {
          if (!modelMap[(model = this.models[i]).cid]) toRemove.push(model);
        }
        if (toRemove.length) this.remove(toRemove, options);
      }

      // See if sorting is needed, update `length` and splice in new models.
      if (toAdd.length || (order && order.length)) {
        if (sortable) sort = true;
        this.length += toAdd.length;
        if (at != null) {
          for (i = 0, l = toAdd.length; i < l; i++) {
            this.models.splice(at + i, 0, toAdd[i]);
          }
        } else {
          if (order) this.models.length = 0;
          var orderedModels = order || toAdd;
          for (i = 0, l = orderedModels.length; i < l; i++) {
            this.models.push(orderedModels[i]);
          }
        }
      }

      // Silently sort the collection if appropriate.
      if (sort) this.sort({silent: true});

      // Unless silenced, it's time to fire all appropriate add/sort events.
      if (!options.silent) {
        for (i = 0, l = toAdd.length; i < l; i++) {
          (model = toAdd[i]).trigger('add', model, this, options);
        }
        if (sort || (order && order.length)) this.trigger('sort', this, options);
      }

      // Return the added (or merged) model (or models).
      return singular ? models[0] : models;
    },

    // When you have more items than you want to add or remove individually,
    // you can reset the entire set with a new list of models, without firing
    // any granular `add` or `remove` events. Fires `reset` when finished.
    // Useful for bulk operations and optimizations.
    reset: function(models, options) {
      options || (options = {});
      for (var i = 0, l = this.models.length; i < l; i++) {
        this._removeReference(this.models[i], options);
      }
      options.previousModels = this.models;
      this._reset();
      models = this.add(models, _.extend({silent: true}, options));
      if (!options.silent) this.trigger('reset', this, options);
      return models;
    },

    // Add a model to the end of the collection.
    push: function(model, options) {
      return this.add(model, _.extend({at: this.length}, options));
    },

    // Remove a model from the end of the collection.
    pop: function(options) {
      var model = this.at(this.length - 1);
      this.remove(model, options);
      return model;
    },

    // Add a model to the beginning of the collection.
    unshift: function(model, options) {
      return this.add(model, _.extend({at: 0}, options));
    },

    // Remove a model from the beginning of the collection.
    shift: function(options) {
      var model = this.at(0);
      this.remove(model, options);
      return model;
    },

    // Slice out a sub-array of models from the collection.
    slice: function() {
      return slice.apply(this.models, arguments);
    },

    // Get a model from the set by id.
    get: function(obj) {
      if (obj == null) return void 0;
      return this._byId[obj] || this._byId[obj.id] || this._byId[obj.cid];
    },

    // Get the model at the given index.
    at: function(index) {
      return this.models[index];
    },

    // Return models with matching attributes. Useful for simple cases of
    // `filter`.
    where: function(attrs, first) {
      if (_.isEmpty(attrs)) return first ? void 0 : [];
      return this[first ? 'find' : 'filter'](function(model) {
        for (var key in attrs) {
          if (attrs[key] !== model.get(key)) return false;
        }
        return true;
      });
    },

    // Return the first model with matching attributes. Useful for simple cases
    // of `find`.
    findWhere: function(attrs) {
      return this.where(attrs, true);
    },

    // Force the collection to re-sort itself. You don't need to call this under
    // normal circumstances, as the set will maintain sort order as each item
    // is added.
    sort: function(options) {
      if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
      options || (options = {});

      // Run sort based on type of `comparator`.
      if (_.isString(this.comparator) || this.comparator.length === 1) {
        this.models = this.sortBy(this.comparator, this);
      } else {
        this.models.sort(_.bind(this.comparator, this));
      }

      if (!options.silent) this.trigger('sort', this, options);
      return this;
    },

    // Pluck an attribute from each model in the collection.
    pluck: function(attr) {
      return _.invoke(this.models, 'get', attr);
    },

    // Fetch the default set of models for this collection, resetting the
    // collection when they arrive. If `reset: true` is passed, the response
    // data will be passed through the `reset` method instead of `set`.
    fetch: function(options) {
      options = options ? _.clone(options) : {};
      if (options.parse === void 0) options.parse = true;
      var success = options.success;
      var collection = this;
      options.success = function(resp) {
        var method = options.reset ? 'reset' : 'set';
        collection[method](resp, options);
        if (success) success(collection, resp, options);
        collection.trigger('sync', collection, resp, options);
      };
      wrapError(this, options);
      return this.sync('read', this, options);
    },

    // Create a new instance of a model in this collection. Add the model to the
    // collection immediately, unless `wait: true` is passed, in which case we
    // wait for the server to agree.
    create: function(model, options) {
      options = options ? _.clone(options) : {};
      if (!(model = this._prepareModel(model, options))) return false;
      if (!options.wait) this.add(model, options);
      var collection = this;
      var success = options.success;
      options.success = function(model, resp) {
        if (options.wait) collection.add(model, options);
        if (success) success(model, resp, options);
      };
      model.save(null, options);
      return model;
    },

    // **parse** converts a response into a list of models to be added to the
    // collection. The default implementation is just to pass it through.
    parse: function(resp, options) {
      return resp;
    },

    // Create a new collection with an identical list of models as this one.
    clone: function() {
      return new this.constructor(this.models);
    },

    // Private method to reset all internal state. Called when the collection
    // is first initialized or reset.
    _reset: function() {
      this.length = 0;
      this.models = [];
      this._byId  = {};
    },

    // Prepare a hash of attributes (or other model) to be added to this
    // collection.
    _prepareModel: function(attrs, options) {
      if (attrs instanceof Model) return attrs;
      options = options ? _.clone(options) : {};
      options.collection = this;
      var model = new this.model(attrs, options);
      if (!model.validationError) return model;
      this.trigger('invalid', this, model.validationError, options);
      return false;
    },

    // Internal method to create a model's ties to a collection.
    _addReference: function(model, options) {
      this._byId[model.cid] = model;
      if (model.id != null) this._byId[model.id] = model;
      if (!model.collection) model.collection = this;
      model.on('all', this._onModelEvent, this);
    },

    // Internal method to sever a model's ties to a collection.
    _removeReference: function(model, options) {
      if (this === model.collection) delete model.collection;
      model.off('all', this._onModelEvent, this);
    },

    // Internal method called every time a model in the set fires an event.
    // Sets need to update their indexes when models change ids. All other
    // events simply proxy through. "add" and "remove" events that originate
    // in other collections are ignored.
    _onModelEvent: function(event, model, collection, options) {
      if ((event === 'add' || event === 'remove') && collection !== this) return;
      if (event === 'destroy') this.remove(model, options);
      if (model && event === 'change:' + model.idAttribute) {
        delete this._byId[model.previous(model.idAttribute)];
        if (model.id != null) this._byId[model.id] = model;
      }
      this.trigger.apply(this, arguments);
    }

  });

  // Underscore methods that we want to implement on the Collection.
  // 90% of the core usefulness of Backbone Collections is actually implemented
  // right here:
  var methods = ['forEach', 'each', 'map', 'collect', 'reduce', 'foldl',
    'inject', 'reduceRight', 'foldr', 'find', 'detect', 'filter', 'select',
    'reject', 'every', 'all', 'some', 'any', 'include', 'contains', 'invoke',
    'max', 'min', 'toArray', 'size', 'first', 'head', 'take', 'initial', 'rest',
    'tail', 'drop', 'last', 'without', 'difference', 'indexOf', 'shuffle',
    'lastIndexOf', 'isEmpty', 'chain', 'sample'];

  // Mix in each Underscore method as a proxy to `Collection#models`.
  _.each(methods, function(method) {
    Collection.prototype[method] = function() {
      var args = slice.call(arguments);
      args.unshift(this.models);
      return _[method].apply(_, args);
    };
  });

  // Underscore methods that take a property name as an argument.
  var attributeMethods = ['groupBy', 'countBy', 'sortBy', 'indexBy'];

  // Use attributes instead of properties.
  _.each(attributeMethods, function(method) {
    Collection.prototype[method] = function(value, context) {
      var iterator = _.isFunction(value) ? value : function(model) {
        return model.get(value);
      };
      return _[method](this.models, iterator, context);
    };
  });

  // Backbone.View
  // -------------

  // Backbone Views are almost more convention than they are actual code. A View
  // is simply a JavaScript object that represents a logical chunk of UI in the
  // DOM. This might be a single item, an entire list, a sidebar or panel, or
  // even the surrounding frame which wraps your whole app. Defining a chunk of
  // UI as a **View** allows you to define your DOM events declaratively, without
  // having to worry about render order ... and makes it easy for the view to
  // react to specific changes in the state of your models.

  // Creating a Backbone.View creates its initial element outside of the DOM,
  // if an existing element is not provided...
  var View = Backbone.View = function(options) {
    this.cid = _.uniqueId('view');
    options || (options = {});
    _.extend(this, _.pick(options, viewOptions));
    this._ensureElement();
    this.initialize.apply(this, arguments);
    this.delegateEvents();
  };

  // Cached regex to split keys for `delegate`.
  var delegateEventSplitter = /^(\S+)\s*(.*)$/;

  // List of view options to be merged as properties.
  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];

  // Set up all inheritable **Backbone.View** properties and methods.
  _.extend(View.prototype, Events, {

    // The default `tagName` of a View's element is `"div"`.
    tagName: 'div',

    // jQuery delegate for element lookup, scoped to DOM elements within the
    // current view. This should be preferred to global lookups where possible.
    $: function(selector) {
      return this.$el.find(selector);
    },

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // **render** is the core function that your view should override, in order
    // to populate its element (`this.el`), with the appropriate HTML. The
    // convention is for **render** to always return `this`.
    render: function() {
      return this;
    },

    // Remove this view by taking the element out of the DOM, and removing any
    // applicable Backbone.Events listeners.
    remove: function() {
      this.$el.remove();
      this.stopListening();
      return this;
    },

    // Change the view's element (`this.el` property), including event
    // re-delegation.
    setElement: function(element, delegate) {
      if (this.$el) this.undelegateEvents();
      this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
      this.el = this.$el[0];
      if (delegate !== false) this.delegateEvents();
      return this;
    },

    // Set callbacks, where `this.events` is a hash of
    //
    // *{"event selector": "callback"}*
    //
    //     {
    //       'mousedown .title':  'edit',
    //       'click .button':     'save',
    //       'click .open':       function(e) { ... }
    //     }
    //
    // pairs. Callbacks will be bound to the view, with `this` set properly.
    // Uses event delegation for efficiency.
    // Omitting the selector binds the event to `this.el`.
    // This only works for delegate-able events: not `focus`, `blur`, and
    // not `change`, `submit`, and `reset` in Internet Explorer.
    delegateEvents: function(events) {
      if (!(events || (events = _.result(this, 'events')))) return this;
      this.undelegateEvents();
      for (var key in events) {
        var method = events[key];
        if (!_.isFunction(method)) method = this[events[key]];
        if (!method) continue;

        var match = key.match(delegateEventSplitter);
        var eventName = match[1], selector = match[2];
        method = _.bind(method, this);
        eventName += '.delegateEvents' + this.cid;
        if (selector === '') {
          this.$el.on(eventName, method);
        } else {
          this.$el.on(eventName, selector, method);
        }
      }
      return this;
    },

    // Clears all callbacks previously bound to the view with `delegateEvents`.
    // You usually don't need to use this, but may wish to if you have multiple
    // Backbone views attached to the same DOM element.
    undelegateEvents: function() {
      this.$el.off('.delegateEvents' + this.cid);
      return this;
    },

    // Ensure that the View has a DOM element to render into.
    // If `this.el` is a string, pass it through `$()`, take the first
    // matching element, and re-assign it to `el`. Otherwise, create
    // an element from the `id`, `className` and `tagName` properties.
    _ensureElement: function() {
      if (!this.el) {
        var attrs = _.extend({}, _.result(this, 'attributes'));
        if (this.id) attrs.id = _.result(this, 'id');
        if (this.className) attrs['class'] = _.result(this, 'className');
        var $el = Backbone.$('<' + _.result(this, 'tagName') + '>').attr(attrs);
        this.setElement($el, false);
      } else {
        this.setElement(_.result(this, 'el'), false);
      }
    }

  });

  // Backbone.sync
  // -------------

  // Override this function to change the manner in which Backbone persists
  // models to the server. You will be passed the type of request, and the
  // model in question. By default, makes a RESTful Ajax request
  // to the model's `url()`. Some possible customizations could be:
  //
  // * Use `setTimeout` to batch rapid-fire updates into a single request.
  // * Send up the models as XML instead of JSON.
  // * Persist models via WebSockets instead of Ajax.
  //
  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
  // as `POST`, with a `_method` parameter containing the true HTTP method,
  // as well as all requests with the body as `application/x-www-form-urlencoded`
  // instead of `application/json` with the model in a param named `model`.
  // Useful when interfacing with server-side languages like **PHP** that make
  // it difficult to read the body of `PUT` requests.
  Backbone.sync = function(method, model, options) {
    var type = methodMap[method];

    // Default options, unless specified.
    _.defaults(options || (options = {}), {
      emulateHTTP: Backbone.emulateHTTP,
      emulateJSON: Backbone.emulateJSON
    });

    // Default JSON-request options.
    var params = {type: type, dataType: 'json'};

    // Ensure that we have a URL.
    if (!options.url) {
      params.url = _.result(model, 'url') || urlError();
    }

    // Ensure that we have the appropriate request data.
    if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
      params.contentType = 'application/json';
      params.data = JSON.stringify(options.attrs || model.toJSON(options));
    }

    // For older servers, emulate JSON by encoding the request into an HTML-form.
    if (options.emulateJSON) {
      params.contentType = 'application/x-www-form-urlencoded';
      params.data = params.data ? {model: params.data} : {};
    }

    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
    // And an `X-HTTP-Method-Override` header.
    if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
      params.type = 'POST';
      if (options.emulateJSON) params.data._method = type;
      var beforeSend = options.beforeSend;
      options.beforeSend = function(xhr) {
        xhr.setRequestHeader('X-HTTP-Method-Override', type);
        if (beforeSend) return beforeSend.apply(this, arguments);
      };
    }

    // Don't process data on a non-GET request.
    if (params.type !== 'GET' && !options.emulateJSON) {
      params.processData = false;
    }

    // If we're sending a `PATCH` request, and we're in an old Internet Explorer
    // that still has ActiveX enabled by default, override jQuery to use that
    // for XHR instead. Remove this line when jQuery supports `PATCH` on IE8.
    if (params.type === 'PATCH' && noXhrPatch) {
      params.xhr = function() {
        return new ActiveXObject("Microsoft.XMLHTTP");
      };
    }

    // Make the request, allowing the user to override any Ajax options.
    var xhr = options.xhr = Backbone.ajax(_.extend(params, options));
    model.trigger('request', model, xhr, options);
    return xhr;
  };

  var noXhrPatch =
    typeof window !== 'undefined' && !!window.ActiveXObject &&
      !(window.XMLHttpRequest && (new XMLHttpRequest).dispatchEvent);

  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
  var methodMap = {
    'create': 'POST',
    'update': 'PUT',
    'patch':  'PATCH',
    'delete': 'DELETE',
    'read':   'GET'
  };

  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
  // Override this if you'd like to use a different library.
  Backbone.ajax = function() {
    return Backbone.$.ajax.apply(Backbone.$, arguments);
  };

  // Backbone.Router
  // ---------------

  // Routers map faux-URLs to actions, and fire events when routes are
  // matched. Creating a new one sets its `routes` hash, if not set statically.
  var Router = Backbone.Router = function(options) {
    options || (options = {});
    if (options.routes) this.routes = options.routes;
    this._bindRoutes();
    this.initialize.apply(this, arguments);
  };

  // Cached regular expressions for matching named param parts and splatted
  // parts of route strings.
  var optionalParam = /\((.*?)\)/g;
  var namedParam    = /(\(\?)?:\w+/g;
  var splatParam    = /\*\w+/g;
  var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;

  // Set up all inheritable **Backbone.Router** properties and methods.
  _.extend(Router.prototype, Events, {

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // Manually bind a single named route to a callback. For example:
    //
    //     this.route('search/:query/p:num', 'search', function(query, num) {
    //       ...
    //     });
    //
    route: function(route, name, callback) {
      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
      if (_.isFunction(name)) {
        callback = name;
        name = '';
      }
      if (!callback) callback = this[name];
      var router = this;
      Backbone.history.route(route, function(fragment) {
        var args = router._extractParameters(route, fragment);
        router.execute(callback, args);
        router.trigger.apply(router, ['route:' + name].concat(args));
        router.trigger('route', name, args);
        Backbone.history.trigger('route', router, name, args);
      });
      return this;
    },

    // Execute a route handler with the provided parameters.  This is an
    // excellent place to do pre-route setup or post-route cleanup.
    execute: function(callback, args) {
      if (callback) callback.apply(this, args);
    },

    // Simple proxy to `Backbone.history` to save a fragment into the history.
    navigate: function(fragment, options) {
      Backbone.history.navigate(fragment, options);
      return this;
    },

    // Bind all defined routes to `Backbone.history`. We have to reverse the
    // order of the routes here to support behavior where the most general
    // routes can be defined at the bottom of the route map.
    _bindRoutes: function() {
      if (!this.routes) return;
      this.routes = _.result(this, 'routes');
      var route, routes = _.keys(this.routes);
      while ((route = routes.pop()) != null) {
        this.route(route, this.routes[route]);
      }
    },

    // Convert a route string into a regular expression, suitable for matching
    // against the current location hash.
    _routeToRegExp: function(route) {
      route = route.replace(escapeRegExp, '\\$&')
                   .replace(optionalParam, '(?:$1)?')
                   .replace(namedParam, function(match, optional) {
                     return optional ? match : '([^/?]+)';
                   })
                   .replace(splatParam, '([^?]*?)');
      return new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$');
    },

    // Given a route, and a URL fragment that it matches, return the array of
    // extracted decoded parameters. Empty or unmatched parameters will be
    // treated as `null` to normalize cross-browser behavior.
    _extractParameters: function(route, fragment) {
      var params = route.exec(fragment).slice(1);
      return _.map(params, function(param, i) {
        // Don't decode the search params.
        if (i === params.length - 1) return param || null;
        return param ? decodeURIComponent(param) : null;
      });
    }

  });

  // Backbone.History
  // ----------------

  // Handles cross-browser history management, based on either
  // [pushState](http://diveintohtml5.info/history.html) and real URLs, or
  // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
  // and URL fragments. If the browser supports neither (old IE, natch),
  // falls back to polling.
  var History = Backbone.History = function() {
    this.handlers = [];
    _.bindAll(this, 'checkUrl');

    // Ensure that `History` can be used outside of the browser.
    if (typeof window !== 'undefined') {
      this.location = window.location;
      this.history = window.history;
    }
  };

  // Cached regex for stripping a leading hash/slash and trailing space.
  var routeStripper = /^[#\/]|\s+$/g;

  // Cached regex for stripping leading and trailing slashes.
  var rootStripper = /^\/+|\/+$/g;

  // Cached regex for detecting MSIE.
  var isExplorer = /msie [\w.]+/;

  // Cached regex for removing a trailing slash.
  var trailingSlash = /\/$/;

  // Cached regex for stripping urls of hash.
  var pathStripper = /#.*$/;

  // Has the history handling already been started?
  History.started = false;

  // Set up all inheritable **Backbone.History** properties and methods.
  _.extend(History.prototype, Events, {

    // The default interval to poll for hash changes, if necessary, is
    // twenty times a second.
    interval: 50,

    // Are we at the app root?
    atRoot: function() {
      return this.location.pathname.replace(/[^\/]$/, '$&/') === this.root;
    },

    // Gets the true hash value. Cannot use location.hash directly due to bug
    // in Firefox where location.hash will always be decoded.
    getHash: function(window) {
      var match = (window || this).location.href.match(/#(.*)$/);
      return match ? match[1] : '';
    },

    // Get the cross-browser normalized URL fragment, either from the URL,
    // the hash, or the override.
    getFragment: function(fragment, forcePushState) {
      if (fragment == null) {
        if (this._hasPushState || !this._wantsHashChange || forcePushState) {
          fragment = decodeURI(this.location.pathname + this.location.search);
          var root = this.root.replace(trailingSlash, '');
          if (!fragment.indexOf(root)) fragment = fragment.slice(root.length);
        } else {
          fragment = this.getHash();
        }
      }
      return fragment.replace(routeStripper, '');
    },

    // Start the hash change handling, returning `true` if the current URL matches
    // an existing route, and `false` otherwise.
    start: function(options) {
      if (History.started) throw new Error("Backbone.history has already been started");
      History.started = true;

      // Figure out the initial configuration. Do we need an iframe?
      // Is pushState desired ... is it available?
      this.options          = _.extend({root: '/'}, this.options, options);
      this.root             = this.options.root;
      this._wantsHashChange = this.options.hashChange !== false;
      this._wantsPushState  = !!this.options.pushState;
      this._hasPushState    = !!(this.options.pushState && this.history && this.history.pushState);
      var fragment          = this.getFragment();
      var docMode           = document.documentMode;
      var oldIE             = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));

      // Normalize root to always include a leading and trailing slash.
      this.root = ('/' + this.root + '/').replace(rootStripper, '/');

      if (oldIE && this._wantsHashChange) {
        var frame = Backbone.$('<iframe src="javascript:0" tabindex="-1">');
        this.iframe = frame.hide().appendTo('body')[0].contentWindow;
        this.navigate(fragment);
      }

      // Depending on whether we're using pushState or hashes, and whether
      // 'onhashchange' is supported, determine how we check the URL state.
      if (this._hasPushState) {
        Backbone.$(window).on('popstate', this.checkUrl);
      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
        Backbone.$(window).on('hashchange', this.checkUrl);
      } else if (this._wantsHashChange) {
        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
      }

      // Determine if we need to change the base url, for a pushState link
      // opened by a non-pushState browser.
      this.fragment = fragment;
      var loc = this.location;

      // Transition from hashChange to pushState or vice versa if both are
      // requested.
      if (this._wantsHashChange && this._wantsPushState) {

        // If we've started off with a route from a `pushState`-enabled
        // browser, but we're currently in a browser that doesn't support it...
        if (!this._hasPushState && !this.atRoot()) {
          this.fragment = this.getFragment(null, true);
          this.location.replace(this.root + '#' + this.fragment);
          // Return immediately as browser will do redirect to new url
          return true;

        // Or if we've started out with a hash-based route, but we're currently
        // in a browser where it could be `pushState`-based instead...
        } else if (this._hasPushState && this.atRoot() && loc.hash) {
          this.fragment = this.getHash().replace(routeStripper, '');
          this.history.replaceState({}, document.title, this.root + this.fragment);
        }

      }

      if (!this.options.silent) return this.loadUrl();
    },

    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
    // but possibly useful for unit testing Routers.
    stop: function() {
      Backbone.$(window).off('popstate', this.checkUrl).off('hashchange', this.checkUrl);
      if (this._checkUrlInterval) clearInterval(this._checkUrlInterval);
      History.started = false;
    },

    // Add a route to be tested when the fragment changes. Routes added later
    // may override previous routes.
    route: function(route, callback) {
      this.handlers.unshift({route: route, callback: callback});
    },

    // Checks the current URL to see if it has changed, and if it has,
    // calls `loadUrl`, normalizing across the hidden iframe.
    checkUrl: function(e) {
      var current = this.getFragment();
      if (current === this.fragment && this.iframe) {
        current = this.getFragment(this.getHash(this.iframe));
      }
      if (current === this.fragment) return false;
      if (this.iframe) this.navigate(current);
      this.loadUrl();
    },

    // Attempt to load the current URL fragment. If a route succeeds with a
    // match, returns `true`. If no defined routes matches the fragment,
    // returns `false`.
    loadUrl: function(fragment) {
      fragment = this.fragment = this.getFragment(fragment);
      return _.any(this.handlers, function(handler) {
        if (handler.route.test(fragment)) {
          handler.callback(fragment);
          return true;
        }
      });
    },

    // Save a fragment into the hash history, or replace the URL state if the
    // 'replace' option is passed. You are responsible for properly URL-encoding
    // the fragment in advance.
    //
    // The options object can contain `trigger: true` if you wish to have the
    // route callback be fired (not usually desirable), or `replace: true`, if
    // you wish to modify the current URL without adding an entry to the history.
    navigate: function(fragment, options) {
      if (!History.started) return false;
      if (!options || options === true) options = {trigger: !!options};

      var url = this.root + (fragment = this.getFragment(fragment || ''));

      // Strip the hash for matching.
      fragment = fragment.replace(pathStripper, '');

      if (this.fragment === fragment) return;
      this.fragment = fragment;

      // Don't include a trailing slash on the root.
      if (fragment === '' && url !== '/') url = url.slice(0, -1);

      // If pushState is available, we use it to set the fragment as a real URL.
      if (this._hasPushState) {
        this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);

      // If hash changes haven't been explicitly disabled, update the hash
      // fragment to store history.
      } else if (this._wantsHashChange) {
        this._updateHash(this.location, fragment, options.replace);
        if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
          // Opening and closing the iframe tricks IE7 and earlier to push a
          // history entry on hash-tag change.  When replace is true, we don't
          // want this.
          if(!options.replace) this.iframe.document.open().close();
          this._updateHash(this.iframe.location, fragment, options.replace);
        }

      // If you've told us that you explicitly don't want fallback hashchange-
      // based history, then `navigate` becomes a page refresh.
      } else {
        return this.location.assign(url);
      }
      if (options.trigger) return this.loadUrl(fragment);
    },

    // Update the hash location, either replacing the current entry, or adding
    // a new one to the browser history.
    _updateHash: function(location, fragment, replace) {
      if (replace) {
        var href = location.href.replace(/(javascript:|#).*$/, '');
        location.replace(href + '#' + fragment);
      } else {
        // Some browsers require that `hash` contains a leading #.
        location.hash = '#' + fragment;
      }
    }

  });

  // Create the default Backbone.history.
  Backbone.history = new History;

  // Helpers
  // -------

  // Helper function to correctly set up the prototype chain, for subclasses.
  // Similar to `goog.inherits`, but uses a hash of prototype properties and
  // class properties to be extended.
  var extend = function(protoProps, staticProps) {
    var parent = this;
    var child;

    // The constructor function for the new subclass is either defined by you
    // (the "constructor" property in your `extend` definition), or defaulted
    // by us to simply call the parent's constructor.
    if (protoProps && _.has(protoProps, 'constructor')) {
      child = protoProps.constructor;
    } else {
      child = function(){ return parent.apply(this, arguments); };
    }

    // Add static properties to the constructor function, if supplied.
    _.extend(child, parent, staticProps);

    // Set the prototype chain to inherit from `parent`, without calling
    // `parent`'s constructor function.
    var Surrogate = function(){ this.constructor = child; };
    Surrogate.prototype = parent.prototype;
    child.prototype = new Surrogate;

    // Add prototype properties (instance properties) to the subclass,
    // if supplied.
    if (protoProps) _.extend(child.prototype, protoProps);

    // Set a convenience property in case the parent's prototype is needed
    // later.
    child.__super__ = parent.prototype;

    return child;
  };

  // Set up inheritance for the model, collection, router, view and history.
  Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;

  // Throw an error when a URL is needed, and none is supplied.
  var urlError = function() {
    throw new Error('A "url" property or function must be specified');
  };

  // Wrap an optional error callback with a fallback error event.
  var wrapError = function(model, options) {
    var error = options.error;
    options.error = function(resp) {
      if (error) error(model, resp, options);
      model.trigger('error', model, resp, options);
    };
  };

  return Backbone;

}));

/**
 * Main source
 */

;(function(factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD
        define(['underscore', 'backbone'], factory);
    } else {
        // globals
        factory(_, Backbone);
    }
}(function(_, Backbone) {
    
    /**
     * Takes a nested object and returns a shallow object keyed with the path names
     * e.g. { "level1.level2": "value" }
     *
     * @param  {Object}      Nested object e.g. { level1: { level2: 'value' } }
     * @return {Object}      Shallow object with path names e.g. { 'level1.level2': 'value' }
     */
    function objToPaths(obj) {
        var ret = {},
            separator = DeepModel.keyPathSeparator;

        for (var key in obj) {
            var val = obj[key];

            if (val && val.constructor === Object && !_.isEmpty(val)) {
                //Recursion for embedded objects
                var obj2 = objToPaths(val);

                for (var key2 in obj2) {
                    var val2 = obj2[key2];

                    ret[key + separator + key2] = val2;
                }
            } else {
                ret[key] = val;
            }
        }

        return ret;
    }

    /**
     * @param {Object}  Object to fetch attribute from
     * @param {String}  Object path e.g. 'user.name'
     * @return {Mixed}
     */
    function getNested(obj, path, return_exists) {
        var separator = DeepModel.keyPathSeparator;

        var fields = path.split(separator);
        var result = obj;
        return_exists || (return_exists === false);
        for (var i = 0, n = fields.length; i < n; i++) {
            if (return_exists && !_.has(result, fields[i])) {
                return false;
            }
            result = result[fields[i]];

            if (result == null && i < n - 1) {
                result = {};
            }
            
            if (typeof result === 'undefined') {
                if (return_exists)
                {
                    return true;
                }
                return result;
            }
        }
        if (return_exists)
        {
            return true;
        }
        return result;
    }

    /**
     * @param {Object} obj                Object to fetch attribute from
     * @param {String} path               Object path e.g. 'user.name'
     * @param {Object} [options]          Options
     * @param {Boolean} [options.unset]   Whether to delete the value
     * @param {Mixed}                     Value to set
     */
    function setNested(obj, path, val, options) {
        options = options || {};

        var separator = DeepModel.keyPathSeparator;

        var fields = path.split(separator);
        var result = obj;
        for (var i = 0, n = fields.length; i < n && result !== undefined ; i++) {
            var field = fields[i];

            //If the last in the path, set the value
            if (i === n - 1) {
                options.unset ? delete result[field] : result[field] = val;
            } else {
                //Create the child object if it doesn't exist, or isn't an object
                if (typeof result[field] === 'undefined' || ! _.isObject(result[field])) {
                    result[field] = {};
                }

                //Move onto the next part of the path
                result = result[field];
            }
        }
    }

    function deleteNested(obj, path) {
      setNested(obj, path, null, { unset: true });
    }

    var DeepModel = Backbone.Model.extend({

        // Override constructor
        // Support having nested defaults by using _.deepExtend instead of _.extend
        constructor: function(attributes, options) {
            var defaults;
            var attrs = attributes || {};
            this.cid = _.uniqueId('c');
            this.attributes = {};
            if (options && options.collection) this.collection = options.collection;
            if (options && options.parse) attrs = this.parse(attrs, options) || {};
            if (defaults = _.result(this, 'defaults')) {
                //<custom code>
                // Replaced the call to _.defaults with _.deepExtend.
                attrs = _.deepExtend({}, defaults, attrs);
                //</custom code>
            }
            this.set(attrs, options);
            this.changed = {};
            this.initialize.apply(this, arguments);
        },

        // Return a copy of the model's `attributes` object.
        toJSON: function(options) {
          return _.deepClone(this.attributes);
        },

        // Override get
        // Supports nested attributes via the syntax 'obj.attr' e.g. 'author.user.name'
        get: function(attr) {
            return getNested(this.attributes, attr);
        },

        // Override set
        // Supports nested attributes via the syntax 'obj.attr' e.g. 'author.user.name'
        set: function(key, val, options) {
            var attr, attrs, unset, changes, silent, changing, prev, current;
            if (key == null) return this;
            
            // Handle both `"key", value` and `{key: value}` -style arguments.
            if (typeof key === 'object') {
              attrs = key;
              options = val || {};
            } else {
              (attrs = {})[key] = val;
            }

            options || (options = {});
            
            // Run validation.
            if (!this._validate(attrs, options)) return false;

            // Extract attributes and options.
            unset           = options.unset;
            silent          = options.silent;
            changes         = [];
            changing        = this._changing;
            this._changing  = true;

            if (!changing) {
              this._previousAttributes = _.deepClone(this.attributes); //<custom>: Replaced _.clone with _.deepClone
              this.changed = {};
            }
            current = this.attributes, prev = this._previousAttributes;

            // Check for changes of `id`.
            if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];

            //<custom code>
            attrs = objToPaths(attrs);
            //</custom code>

            // For each `set` attribute, update or delete the current value.
            for (attr in attrs) {
              val = attrs[attr];

              //<custom code>: Using getNested, setNested and deleteNested
              if (!_.isEqual(getNested(current, attr), val)) changes.push(attr);
              if (!_.isEqual(getNested(prev, attr), val)) {
                setNested(this.changed, attr, val);
              } else {
                deleteNested(this.changed, attr);
              }
              unset ? deleteNested(current, attr) : setNested(current, attr, val);
              //</custom code>
            }

            // Trigger all relevant attribute changes.
            if (!silent) {
              if (changes.length) this._pending = true;

              //<custom code>
              var separator = DeepModel.keyPathSeparator;

              for (var i = 0, l = changes.length; i < l; i++) {
                var key = changes[i];

                this.trigger('change:' + key, this, getNested(current, key), options);

                var fields = key.split(separator);

                //Trigger change events for parent keys with wildcard (*) notation
                for(var n = fields.length - 1; n > 0; n--) {
                  var parentKey = _.first(fields, n).join(separator),
                      wildcardKey = parentKey + separator + '*';

                  this.trigger('change:' + wildcardKey, this, getNested(current, parentKey), options);
                }
                //</custom code>
              }
            }

            if (changing) return this;
            if (!silent) {
              while (this._pending) {
                this._pending = false;
                this.trigger('change', this, options);
              }
            }
            this._pending = false;
            this._changing = false;
            return this;
        },

        // Clear all attributes on the model, firing `"change"` unless you choose
        // to silence it.
        clear: function(options) {
          var attrs = {};
          var shallowAttributes = objToPaths(this.attributes);
          for (var key in shallowAttributes) attrs[key] = void 0;
          return this.set(attrs, _.extend({}, options, {unset: true}));
        },

        // Determine if the model has changed since the last `"change"` event.
        // If you specify an attribute name, determine if that attribute has changed.
        hasChanged: function(attr) {
          if (attr == null) return !_.isEmpty(this.changed);
          return getNested(this.changed, attr) !== undefined;
        },

        // Return an object containing all the attributes that have changed, or
        // false if there are no changed attributes. Useful for determining what
        // parts of a view need to be updated and/or what attributes need to be
        // persisted to the server. Unset attributes will be set to undefined.
        // You can also pass an attributes object to diff against the model,
        // determining if there *would be* a change.
        changedAttributes: function(diff) {
          //<custom code>: objToPaths
          if (!diff) return this.hasChanged() ? objToPaths(this.changed) : false;
          //</custom code>

          var old = this._changing ? this._previousAttributes : this.attributes;
          
          //<custom code>
          diff = objToPaths(diff);
          old = objToPaths(old);
          //</custom code>

          var val, changed = false;
          for (var attr in diff) {
            if (_.isEqual(old[attr], (val = diff[attr]))) continue;
            (changed || (changed = {}))[attr] = val;
          }
          return changed;
        },

        // Get the previous value of an attribute, recorded at the time the last
        // `"change"` event was fired.
        previous: function(attr) {
          if (attr == null || !this._previousAttributes) return null;

          //<custom code>
          return getNested(this._previousAttributes, attr);
          //</custom code>
        },

        // Get all of the attributes of the model at the time of the previous
        // `"change"` event.
        previousAttributes: function() {
          //<custom code>
          return _.deepClone(this._previousAttributes);
          //</custom code>
        }
    });


    //Config; override in your app to customise
    DeepModel.keyPathSeparator = '.';


    //Exports
    Backbone.DeepModel = DeepModel;

    //For use in NodeJS
    if (typeof module != 'undefined') module.exports = DeepModel;
    
    return Backbone;

}));