Merge pull request #606 from hypothesis/search-tool-7

Implement search tool

h/css/common.scss

@@ -624,7 +624,7 @@ blockquote {
   @include smallshadow;
   background: $white;
   border: solid 1px $grayLighter;
-  height: 2em;
+  height: 2.25em;
   position: fixed;
   left: -1px;
   right: -1px;
@@ -772,6 +772,10 @@ blockquote {
     }
   }
 
+  .search-collapsed {
+    background-image: url("../images/plus_1.png");
+  }
+
   //These are all the changes needed to collapse thread objects.
   &.collapsed {
     display: block !important;
@@ -1129,3 +1133,90 @@ h3.stream {
   word-spacing: normal;
   margin-top: 0;
 }
+
+//Visual Search////////////////////////////////
+//Imported their css here
+
+.collapsed-container {
+  height: 1em;
+  visibility: hidden;
+}
+
+.small-inner {
+  margin:0px 0.5em 0px 1em;
+}
+
+.search-container {
+  width: auto;
+  float: none;
+  overflow: hidden;
+}
+
+.visual-search {
+  .VS-search .VS-search-box {
+    border: 0;
+    min-height: 22px;
+    margin-top: 1px;
+    margin-bottom: 1px;
+  }
+
+  .VS-search input,.VS-search .VS-input-width-tester {
+    border: none;
+    -moz-box-sizing:content-box;
+    -webkit-box-sizing:content-box;
+    box-sizing: content-box;
+  }
+
+  .VS-search .search_input input {
+    width: 4px;
+  }
+}
+
+.thread {
+  .load-more {
+    @include pie-clearfix;
+    font-family: $sansFontFamily;
+    font-weight:bold;
+    font-size: 11px;
+  }
+}
+
+.visual-container {
+  margin-left: 3em;
+}
+
+.magnify-glass {
+  width: 2.25em;
+  min-height: 22px;
+}
+
+.magnify-glass .VS-icon {
+  margin-left: 3.5em;
+}
+
+.magnify-glass .VS-icon-search:hover {
+  width:12px;
+  height:12px;
+  background-image:url(../images/embed/icons/search_glyph_dark.png);
+  cursor: pointer;
+}
+
+.fadeIn-setup,.fadeOut-setup {
+  -webkit-transition: 1s linear opacity;
+  -moz-transition: 1s linear opacity;
+  -o-transition: 1s linear opacity;
+  transition: 1s linear opacity;
+}
+
+.fadeIn-setup{
+  opacity:0;
+}
+.fadeOut-setup{
+  opacity:1;
+}
+.fadeIn-setup.fadeIn-start {
+  opacity: 1;
+}
+.fadeOut-setup.fadeOut-start{
+    opacity:0;
+}
\ No newline at end of file

h/css/sidebar.scss

@@ -322,3 +322,22 @@ svg { -webkit-tap-highlight-color: rgba(255, 255, 255, 0); }
     display: inline;
   }
 }
+
+
+//SEARCH HIGHLIGHTS////////////////////////////////
+.search-hl-active {
+  background: $highlightColor;
+  box-shadow:3px 3px 4px -1px #999999;
+  &::-moz-selection {
+    background: $highlightColor;
+    box-shadow:3px 3px 4px #999999;
+  }
+  &::-moz-selection, &::-moz-window-inactive, &::window-inactive {
+    background: $highlightColor;
+    box-shadow:3px 3px 4px #999999;
+  }
+  &::selection, &::selection:window-inactive {
+    background: $highlightColor;
+    box-shadow:3px 3px 4px #999999;
+  }
+}

h/js/app.coffee

@@ -18,6 +18,10 @@ configure = ($routeProvider) ->
     controller: 'ViewerController'
     reloadOnSearch: false
     templateUrl: 'viewer.html'
+  $routeProvider.when '/page_search',
+    controller: 'SearchController'
+    reloadOnSearch: false
+    templateUrl: 'page_search.html'
   $routeProvider.otherwise
     redirectTo: '/viewer'
 configure.$inject = ['$routeProvider']

h/js/app_directives.coffee

@@ -19,7 +19,9 @@ annotation = ['$filter', 'annotator', ($filter, annotator) ->
   priority: 100  # Must run before ngModel
   require: '?ngModel'
   restrict: 'C'
-  scope: {}
+  scope:
+    mode: '@'
+    replies: '@'
   templateUrl: 'annotation.html'
 ]
 

h/js/controllers.coffee

@@ -7,11 +7,11 @@ class App
       tab: null
 
   this.$inject = [
-    '$element', '$http', '$location', '$scope', '$timeout',
+    '$element', '$filter', '$http', '$location', '$rootScope', '$scope', '$timeout',
     'annotator', 'authentication', 'drafts', 'flash'
   ]
   constructor: (
-    $element, $http, $location, $scope, $timeout
+    $element, $filter, $http, $location, $rootScope, $scope, $timeout
     annotator, authentication, drafts, flash
   ) ->
     # Get the base URL from the base tag or the app location
@@ -93,7 +93,7 @@ class App
           else
             return unless drafts.discard()
             dynamicBucket = false
-            $location.search('id', null)
+            $location.search({'id' : null })
             annotator.showViewer heatmap.buckets[bucket]
             $scope.$digest()
 
@@ -232,6 +232,158 @@ class App
     $scope.createUnattachedAnnotation = ->
       console.log "Should create unattached annotation"
 
+    # Searchbar initialization
+    @user_filter = $filter('userName')
+    search_query = ''
+    unless typeof(localStorage) is 'undefined'
+      search_query = localStorage.getItem("hyp_page_search_query")
+      console.log 'Loading back search query: ' + search_query
+
+    @visualSearch = VS.init
+      container: $element.find('.visual-search')
+      query: search_query
+      callbacks:
+        search: (query, searchCollection) =>
+          unless query
+            return
+
+          matched = []
+          whole_document = true
+          in_body_text = ''
+          for searchItem in searchCollection.models
+            if searchItem.attributes.category is 'scope' and
+            searchItem.attributes.value is 'sidebar'
+              whole_document = false
+
+            if searchItem.attributes.category is 'text'
+              in_body_text = searchItem.attributes.value.toLowerCase()
+              text_tokens = searchItem.attributes.value.split ' '
+            if searchItem.attributes.category is 'tag'
+              tag_search = searchItem.attributes.value.toLowerCase()
+
+          if whole_document
+            annotations = annotator.plugins.Store.annotations
+          else
+            annotations = $rootScope.annotations
+
+          for annotation in annotations
+            matches = true
+            for searchItem in searchCollection.models
+              category = searchItem.attributes.category
+              value = searchItem.attributes.value
+              switch category
+                when 'user'
+                  userName = @user_filter annotation.user
+                  unless userName.toLowerCase() is value.toLowerCase()
+                    matches = false
+                    break
+                when 'text'
+                  unless annotation.text?
+                    matches = false
+                    break
+
+                  for token in text_tokens
+                    unless annotation.text.toLowerCase().indexOf(token.toLowerCase()) > -1
+                      matches = false
+                      break
+
+                when 'tag'
+                  unless annotation.tags?
+                    matches = false
+                    break
+
+                  found = false
+                  for tag in annotation.tags
+                    if tag_search is tag.toLowerCase()
+                      found = true
+                      break
+                  unless found
+                    matches = false
+                  break
+                when 'time'
+                    delta = Math.round((+new Date - new Date(annotation.updated)) / 1000)
+                    switch value
+                      when '5 min'
+                        unless delta <= 60*5
+                          matches = false
+                      when '30 min'
+                        unless delta <= 60*30
+                          matches = false
+                      when '1 hour'
+                        unless delta <= 60*60
+                          matches = false
+                      when '12 hours'
+                        unless delta <= 60*60*12
+                          matches = false
+                      when '1 day'
+                        unless delta <= 60*60*24
+                          matches = false
+                      when '1 week'
+                        unless delta <= 60*60*24*7
+                          matches = false
+                      when '1 month'
+                        unless delta <= 60*60*24*31
+                          matches = false
+                      when '1 year'
+                        unless delta <= 60*60*24*366
+                          matches = false
+                when 'group'
+                    priv_public = 'group:__world__' in (annotation.permissions.read or [])
+                    switch value
+                      when 'Public'
+                        unless priv_public
+                          matches = false
+                      when 'Private'
+                        if priv_public
+                          matches = false
+
+            if matches
+              matched.push annotation.id
+
+          # Save query to localStorage
+          unless typeof(localStorage) is 'undefined'
+            try
+              localStorage.setItem "hyp_page_search_query", query
+            catch error
+              console.warn 'Cannot save query to localStorage!'
+              if error is DOMException.QUOTA_EXCEEDED_ERR
+                console.warn 'localStorage quota exceeded!'
+
+          # Set the path
+          search =
+            whole_document : whole_document
+            matched : matched
+            in_body_text: in_body_text
+          $location.path('/page_search').search(search)
+          $rootScope.$digest()
+
+        facetMatches: (callback) =>
+          if $scope.show_search
+            return callback ['text','tag','scope', 'group','time','user'], {preserveOrder: true}
+        valueMatches: (facet, searchTerm, callback) ->
+          switch facet
+            when 'group' then callback ['Public', 'Private']
+            when 'area' then callback ['sidebar', 'document']
+            when 'time'
+              callback ['5 min', '30 min', '1 hour', '12 hours', '1 day', '1 week', '1 month', '1 year'], {preserveOrder: true}
+        clearSearch: (original) =>
+          $scope.show_search = false
+          original()
+          unless typeof(localStorage) is 'undefined'
+            try
+              localStorage.setItem "hyp_page_search_query", ""
+            catch error
+              console.warn 'Cannot save query to localStorage!'
+              if error is DOMException.QUOTA_EXCEEDED_ERR
+                console.warn 'localStorage quota exceeded!'
+          $location.path('/viewer')
+          $rootScope.$digest()
+
+    if search_query.length > 0
+      $timeout =>
+        @visualSearch.searchBox.searchEvent('')
+      , 1500
+
 class Annotation
   this.$inject = ['$element', '$location', '$scope', 'annotator', 'drafts', '$timeout']
   constructor: ($element, $location, $scope, annotator, drafts, $timeout) ->
@@ -420,8 +572,201 @@ class Viewer
         return new Date()
 
 
+class Search
+  this.$inject = ['$filter', '$location', '$routeParams', '$scope', 'annotator']
+  constructor: ($filter, $location, $routeParams, $scope, annotator) ->
+    $scope.highlighter = '<span class="search-hl-active">$&</span>'
+    $scope.filter_orderBy = $filter('orderBy')
+    $scope.render_order = {}
+    $scope.render_pos = {}
+    $scope.ann_info =
+      shown : {}
+      more_top : {}
+      more_bottom : {}
+      more_top_num : {}
+      more_bottom_num: {}
+
+
+    buildRenderOrder = (threadid, threads) =>
+      unless threads?.length
+        return
+
+      sorted = $scope.filter_orderBy threads, $scope.sortThread, true
+      for thread in sorted
+        $scope.render_pos[thread.message.id] = $scope.render_order[threadid].length
+        $scope.render_order[threadid].push thread.message.id
+        buildRenderOrder(threadid, thread.children)
+
+    setMoreTop = (threadid, annotation) =>
+      unless annotation.id in $scope.search_filter
+        return false
+
+      result = false
+      pos = $scope.render_pos[annotation.id]
+      if pos > 0
+        prev = $scope.render_order[threadid][pos-1]
+        unless prev in $scope.search_filter
+          result = true
+      result
+
+    setMoreBottom = (threadid, annotation) =>
+      unless annotation.id in $scope.search_filter
+        return false
+
+      result = false
+      pos = $scope.render_pos[annotation.id]
+
+      if pos < $scope.render_order[threadid].length-1
+        next = $scope.render_order[threadid][pos+1]
+        unless next in $scope.search_filter
+          result = true
+      result
+
+    refresh = =>
+      $scope.search_filter = $routeParams.matched
+      heatmap = annotator.plugins.Heatmap
+
+      # Create the regexps for highlighting the matches inside the annotations' bodies
+      $scope.text_tokens = $routeParams.in_body_text.split ' '
+      $scope.text_regexp = []
+      for token in $scope.text_tokens
+        regexp = new RegExp(token,"ig")
+        $scope.text_regexp.push regexp
+
+      threads = []
+      $scope.render_order = {}
+      # Choose the root annotations to work with
+      for bucket in heatmap.buckets
+        for annotation in bucket
+          # The annotation itself is a hit.
+          thread = annotator.threading.getContainer annotation.id
+
+          if annotation.id in $scope.search_filter
+            threads.push thread
+            $scope.render_order[annotation.id] = []
+            buildRenderOrder(annotation.id, [thread])
+            continue
+
+          # Maybe it has a child we were looking for
+          children = thread.flattenChildren()
+          has_search_result = false
+          if children?
+            for child in children
+              if child.id in $scope.search_filter
+                has_search_result = true
+                break
+
+          if has_search_result
+            threads.push thread
+            $scope.render_order[annotation.id] = []
+            buildRenderOrder(annotation.id, [thread])
+
+      # Re-construct exact order the annotation threads will be shown
+
+      # Fill search related data before display
+      # - add highlights
+      # - populate the top/bottom show more links
+      # - decide that by default the annotation is shown or hidden
+      for thread in threads
+        thread.message.highlightText = thread.message.text
+        if thread.message.id in $scope.search_filter
+          $scope.ann_info.shown[thread.message.id] = true
+          for regexp in $scope.text_regexp
+            thread.message.highlightText = thread.message.highlightText.replace regexp, $scope.highlighter
+        else
+          $scope.ann_info.shown[thread.message.id] = false
+
+        $scope.ann_info.more_top[thread.message.id] = setMoreTop(thread.message.id, thread.message)
+        $scope.ann_info.more_bottom[thread.message.id] = setMoreBottom(thread.message.id, thread.message)
+
+        children = thread.flattenChildren()
+        if children?
+          for child in children
+            child.highlightText = child.text
+            if child.id in $scope.search_filter
+              $scope.ann_info.shown[child.id] = true
+              for regexp in $scope.text_regexp
+                child.highlightText = child.highlightText.replace regexp, $scope.highlighter
+            else
+              $scope.ann_info.shown[child.id] = false
+
+            $scope.ann_info.more_top[child.id] = setMoreTop(thread.message.id, child)
+            $scope.ann_info.more_bottom[child.id] = setMoreBottom(thread.message.id, child)
+
+      # Calculate the number of hidden annotations for <x> more labels
+      for threadid, order of $scope.render_order
+        hidden = 0
+        last_shown = null
+        for id in order
+          if id in $scope.search_filter
+            if last_shown? then $scope.ann_info.more_bottom_num[last_shown] = hidden
+            $scope.ann_info.more_top_num[id] = hidden
+            last_shown = id
+            hidden = 0
+          else
+            hidden += 1
+        if last_shown? then $scope.ann_info.more_bottom_num[last_shown] = hidden
+
+
+      $scope.threads = threads
+
+    $scope.$on '$routeUpdate', refresh
+
+    $scope.getThreadId = (id) ->
+      thread = annotator.threading.getContainer id
+      threadid = id
+      if thread.message.references?
+        threadid = thread.message.references[0]
+      threadid
+
+    $scope.clickMoreTop = (id) ->
+      threadid = $scope.getThreadId id
+      pos = $scope.render_pos[id]
+      rendered = $scope.render_order[threadid]
+      $scope.ann_info.more_top[id] = false
+
+      pos -= 1
+      while pos >= 0
+        prev_id = rendered[pos]
+        if $scope.ann_info.shown[prev_id]
+          $scope.ann_info.more_bottom[prev_id] = false
+          break
+        $scope.ann_info.more_bottom[prev_id] = false
+        $scope.ann_info.more_top[prev_id] = false
+        $scope.ann_info.shown[prev_id] = true
+        pos -= 1
+
+
+    $scope.clickMoreBottom = (id) ->
+      threadid = $scope.getThreadId id
+      pos = $scope.render_pos[id]
+      rendered = $scope.render_order[threadid]
+      $scope.ann_info.more_bottom[id] = false
+
+      pos += 1
+      while pos < rendered.length
+        next_id = rendered[pos]
+        if $scope.ann_info.shown[next_id]
+          $scope.ann_info.more_top[next_id] = false
+          break
+        $scope.ann_info.more_bottom[next_id] = false
+        $scope.ann_info.more_top[next_id] = false
+        $scope.ann_info.shown[next_id] = true
+        pos += 1
+
+
+    $scope.sortThread = (thread) ->
+      if thread?.message?.updated
+        return new Date(thread.message.updated)
+      else
+        return new Date()
+
+    refresh()
+
+
 angular.module('h.controllers', ['bootstrap'])
   .controller('AppController', App)
   .controller('AnnotationController', Annotation)
   .controller('EditorController', Editor)
   .controller('ViewerController', Viewer)
+  .controller('SearchController', Search)

h/js/services.coffee

@@ -415,8 +415,7 @@ class DraftProvider
     else
       false
 
-
-angular.module('h.services', ['ngResource'])
+angular.module('h.services', ['ngResource','h.filters'])
   .provider('authentication', AuthenticationProvider)
   .provider('drafts', DraftProvider)
   .service('annotator', Hypothesis)

h/lib/backbone-0.9.10.js

+//     Backbone.js 0.9.10
+
+//     (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
+//     Backbone may be freely distributed under the MIT license.
+//     For all details and documentation:
+//     http://backbonejs.org
+
+(function(){
+
+  // Initial Setup
+  // -------------
+
+  // Save a reference to the global object (`window` in the browser, `exports`
+  // on the server).
+  var root = this;
+
+  // 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 a local reference to array methods.
+  var array = [];
+  var push = array.push;
+  var slice = array.slice;
+  var splice = array.splice;
+
+  // The top-level namespace. All public Backbone classes and modules will
+  // be attached to this. Exported for both CommonJS and the browser.
+  var Backbone;
+  if (typeof exports !== 'undefined') {
+    Backbone = exports;
+  } else {
+    Backbone = root.Backbone = {};
+  }
+
+  // Current version of the library. Keep in sync with `package.json`.
+  Backbone.VERSION = '0.9.10';
+
+  // Require Underscore, if we're on the server, and it's not already present.
+  var _ = root._;
+  if (!_ && (typeof require !== 'undefined')) _ = require('underscore');
+
+  // For Backbone's purposes, jQuery, Zepto, or Ender owns the `$` variable.
+  Backbone.$ = root.jQuery || root.Zepto || root.ender;
+
+  // 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 `"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
+  // ---------------
+
+  // 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;
+    if (typeof name === 'object') {
+      for (var key in name) {
+        obj[action].apply(obj, [key, name[key]].concat(rest));
+      }
+    } else 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));
+      }
+    } else {
+      return true;
+    }
+  };
+
+  // Optimized internal dispatch function for triggering events. Tries to
+  // keep the usual cases speedy (most Backbone events have 3 arguments).
+  var triggerEvents = function(events, args) {
+    var ev, i = -1, l = events.length;
+    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, args[0]);
+    return;
+    case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, args[0], args[1]);
+    return;
+    case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, args[0], args[1], args[2]);
+    return;
+    default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args);
+    }
+  };
+
+  // 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 one or more space separated events, or an events map,
+    // 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 list = this._events[name] || (this._events[name] = []);
+      list.push({callback: callback, context: context, ctx: context || this});
+      return this;
+    },
+
+    // Bind events 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;
+      this.on(name, once, context);
+      return this;
+    },
+
+    // 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 list, ev, events, names, i, l, j, k;
+      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
+      if (!name && !callback && !context) {
+        this._events = {};
+        return this;
+      }
+
+      names = name ? [name] : _.keys(this._events);
+      for (i = 0, l = names.length; i < l; i++) {
+        name = names[i];
+        if (list = this._events[name]) {
+          events = [];
+          if (callback || context) {
+            for (j = 0, k = list.length; j < k; j++) {
+              ev = list[j];
+              if ((callback && callback !== ev.callback &&
+                               callback !== ev.callback._callback) ||
+                  (context && context !== ev.context)) {
+                events.push(ev);
+              }
+            }
+          }
+          this._events[name] = events;
+        }
+      }
+
+      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;
+    },
+
+    // An inversion-of-control version of `on`. Tell *this* object to listen to
+    // an event in another object ... keeping track of what it's listening to.
+    listenTo: function(obj, name, callback) {
+      var listeners = this._listeners || (this._listeners = {});
+      var id = obj._listenerId || (obj._listenerId = _.uniqueId('l'));
+      listeners[id] = obj;
+      obj.on(name, typeof name === 'object' ? this : callback, this);
+      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 listeners = this._listeners;
+      if (!listeners) return;
+      if (obj) {
+        obj.off(name, typeof name === 'object' ? this : callback, this);
+        if (!name && !callback) delete listeners[obj._listenerId];
+      } else {
+        if (typeof name === 'object') callback = this;
+        for (var id in listeners) {
+          listeners[id].off(name, callback, this);
+        }
+        this._listeners = {};
+      }
+      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
+  // --------------
+
+  // Create a new model, with defined attributes. A client id (`cid`)
+  // is automatically generated and assigned for you.
+  var Model = Backbone.Model = 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')) {
+      attrs = _.defaults({}, attrs, 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 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.
+    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"` unless
+    // you choose to silence it.
+    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 = true;
+        for (var i = 0, l = changes.length; i < l; i++) {
+          this.trigger('change:' + changes[i], this, current[changes[i]], options);
+        }
+      }
+
+      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;
+    },
+
+    // Remove an attribute from the model, firing `"change"` unless you choose
+    // to silence it. `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"` unless you choose
+    // to silence it.
+    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 overriden,
+    // triggering a `"change"` event.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var success = options.success;
+      options.success = function(model, resp, options) {
+        if (!model.set(model.parse(resp, options), options)) return false;
+        if (success) success(model, resp, 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, success, 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;
+      }
+
+      // If we're not waiting and attributes exist, save acts as `set(attr).save(null, opts)`.
+      if (attrs && (!options || !options.wait) && !this.set(attrs, options)) return false;
+
+      options = _.extend({validate: true}, options);
+
+      // Do not persist invalid models.
+      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;
+      success = options.success;
+      options.success = function(model, resp, options) {
+        // 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);
+      };
+
+      // Finish configuring and sending the Ajax request.
+      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(model, resp, options) {
+        if (options.wait || model.isNew()) destroy();
+        if (success) success(model, resp, options);
+      };
+
+      if (this.isNew()) {
+        options.success(this, null, options);
+        return false;
+      }
+
+      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 + (base.charAt(base.length - 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.id == null;
+    },
+
+    // Check if the model is currently in a valid state.
+    isValid: function(options) {
+      return !this.validate || !this.validate(this.attributes, options);
+    },
+
+    // Run validation against the next complete set of model attributes,
+    // returning `true` if all is well. Otherwise, fire a general
+    // `"error"` event and call the error callback, if specified.
+    _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, options || {});
+      return false;
+    }
+
+  });
+
+  // Backbone.Collection
+  // -------------------
+
+  // Provides a standard collection class for our sets of models, ordered
+  // or unordered. 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.models = [];
+    this._reset();
+    this.initialize.apply(this, arguments);
+    if (models) this.reset(models, _.extend({silent: true}, options));
+  };
+
+  // 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) {
+      models = _.isArray(models) ? models.slice() : [models];
+      options || (options = {});
+      var i, l, model, attrs, existing, doSort, add, at, sort, sortAttr;
+      add = [];
+      at = options.at;
+      sort = this.comparator && (at == null) && options.sort != false;
+      sortAttr = _.isString(this.comparator) ? this.comparator : null;
+
+      // Turn bare objects into model references, and prevent invalid models
+      // from being added.
+      for (i = 0, l = models.length; i < l; i++) {
+        if (!(model = this._prepareModel(attrs = models[i], options))) {
+          this.trigger('invalid', this, attrs, options);
+          continue;
+        }
+
+        // If a duplicate is found, prevent it from being added and
+        // optionally merge it into the existing model.
+        if (existing = this.get(model)) {
+          if (options.merge) {
+            existing.set(attrs === model ? model.attributes : attrs, options);
+            if (sort && !doSort && existing.hasChanged(sortAttr)) doSort = true;
+          }
+          continue;
+        }
+
+        // This is a new model, push it to the `add` list.
+        add.push(model);
+
+        // Listen to added models' events, and index models for lookup by
+        // `id` and by `cid`.
+        model.on('all', this._onModelEvent, this);
+        this._byId[model.cid] = model;
+        if (model.id != null) this._byId[model.id] = model;
+      }
+
+      // See if sorting is needed, update `length` and splice in new models.
+      if (add.length) {
+        if (sort) doSort = true;
+        this.length += add.length;
+        if (at != null) {
+          splice.apply(this.models, [at, 0].concat(add));
+        } else {
+          push.apply(this.models, add);
+        }
+      }
+
+      // Silently sort the collection if appropriate.
+      if (doSort) this.sort({silent: true});
+
+      if (options.silent) return this;
+
+      // Trigger `add` events.
+      for (i = 0, l = add.length; i < l; i++) {
+        (model = add[i]).trigger('add', model, this, options);
+      }
+
+      // Trigger `sort` if the collection was sorted.
+      if (doSort) this.trigger('sort', this, options);
+
+      return this;
+    },
+
+    // Remove a model, or a list of models from the set.
+    remove: function(models, options) {
+      models = _.isArray(models) ? models.slice() : [models];
+      options || (options = {});
+      var i, l, index, model;
+      for (i = 0, l = models.length; i < l; i++) {
+        model = 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);
+      }
+      return this;
+    },
+
+    // Add a model to the end of the collection.
+    push: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: this.length}, options));
+      return model;
+    },
+
+    // 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) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: 0}, options));
+      return model;
+    },
+
+    // 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(begin, end) {
+      return this.models.slice(begin, end);
+    },
+
+    // Get a model from the set by id.
+    get: function(obj) {
+      if (obj == null) return void 0;
+      this._idAttr || (this._idAttr = this.model.prototype.idAttribute);
+      return this._byId[obj.id || obj.cid || obj[this._idAttr] || obj];
+    },
+
+    // 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) {
+      if (_.isEmpty(attrs)) return [];
+      return this.filter(function(model) {
+        for (var key in attrs) {
+          if (attrs[key] !== model.get(key)) return false;
+        }
+        return 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);
+    },
+
+    // Smartly update a collection with a change set of models, adding,
+    // removing, and merging as necessary.
+    update: function(models, options) {
+      options = _.extend({add: true, merge: true, remove: true}, options);
+      if (options.parse) models = this.parse(models, options);
+      var model, i, l, existing;
+      var add = [], remove = [], modelMap = {};
+
+      // Allow a single model (or no argument) to be passed.
+      if (!_.isArray(models)) models = models ? [models] : [];
+
+      // Proxy to `add` for this case, no need to iterate...
+      if (options.add && !options.remove) return this.add(models, options);
+
+      // Determine which models to add and merge, and which to remove.
+      for (i = 0, l = models.length; i < l; i++) {
+        model = models[i];
+        existing = this.get(model);
+        if (options.remove && existing) modelMap[existing.cid] = true;
+        if ((options.add && !existing) || (options.merge && existing)) {
+          add.push(model);
+        }
+      }
+      if (options.remove) {
+        for (i = 0, l = this.models.length; i < l; i++) {
+          model = this.models[i];
+          if (!modelMap[model.cid]) remove.push(model);
+        }
+      }
+
+      // Remove models (if applicable) before we add and merge the rest.
+      if (remove.length) this.remove(remove, options);
+      if (add.length) this.add(add, options);
+      return this;
+    },
+
+    // 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 `add` or `remove` events. Fires `reset` when finished.
+    reset: function(models, options) {
+      options || (options = {});
+      if (options.parse) models = this.parse(models, options);
+      for (var i = 0, l = this.models.length; i < l; i++) {
+        this._removeReference(this.models[i]);
+      }
+      options.previousModels = this.models.slice();
+      this._reset();
+      if (models) this.add(models, _.extend({silent: true}, options));
+      if (!options.silent) this.trigger('reset', this, options);
+      return this;
+    },
+
+    // Fetch the default set of models for this collection, resetting the
+    // collection when they arrive. If `update: true` is passed, the response
+    // data will be passed through the `update` method instead of `reset`.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var success = options.success;
+      options.success = function(collection, resp, options) {
+        var method = options.update ? 'update' : 'reset';
+        collection[method](resp, options);
+        if (success) success(collection, resp, 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, options) {
+        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);
+    },
+
+    // Reset all internal state. Called when the collection is reset.
+    _reset: function() {
+      this.length = 0;
+      this.models.length = 0;
+      this._byId  = {};
+    },
+
+    // Prepare a model or hash of attributes to be added to this collection.
+    _prepareModel: function(attrs, options) {
+      if (attrs instanceof Model) {
+        if (!attrs.collection) attrs.collection = this;
+        return attrs;
+      }
+      options || (options = {});
+      options.collection = this;
+      var model = new this.model(attrs, options);
+      if (!model._validate(attrs, options)) return false;
+      return model;
+    },
+
+    // Internal method to remove a model's ties to a collection.
+    _removeReference: function(model) {
+      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);
+    },
+
+    sortedIndex: function (model, value, context) {
+      value || (value = this.comparator);
+      var iterator = _.isFunction(value) ? value : function(model) {
+        return model.get(value);
+      };
+      return _.sortedIndex(this.models, model, iterator, context);
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Collection.
+  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', 'indexOf', 'shuffle', 'lastIndexOf',
+    'isEmpty', 'chain'];
+
+  // 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'];
+
+  // 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.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  = /[\-{}\[\]+?.,\\\^$|#\s]/g;
+
+  // Set up all inheritable **Backbone.Router** properties and methods.
+  _.extend(Router.prototype, Events, {
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Manually bind a single named route to a callback. For example:
+    //
+    //     this.route('search/:query/p:num', 'search', function(query, num) {
+    //       ...
+    //     });
+    //
+    route: function(route, name, callback) {
+      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+      if (!callback) callback = this[name];
+      Backbone.history.route(route, _.bind(function(fragment) {
+        var args = this._extractParameters(route, fragment);
+        callback && callback.apply(this, args);
+        this.trigger.apply(this, ['route:' + name].concat(args));
+        this.trigger('route', name, args);
+        Backbone.history.trigger('route', this, name, args);
+      }, this));
+      return this;
+    },
+
+    // Simple proxy to `Backbone.history` to save a fragment into the history.
+    navigate: function(fragment, options) {
+      Backbone.history.navigate(fragment, options);
+      return this;
+    },
+
+    // Bind all defined routes to `Backbone.history`. We have to reverse the
+    // order of the routes here to support behavior where the most general
+    // routes can be defined at the bottom of the route map.
+    _bindRoutes: function() {
+      if (!this.routes) return;
+      var route, routes = _.keys(this.routes);
+      while ((route = routes.pop()) != null) {
+        this.route(route, this.routes[route]);
+      }
+    },
+
+    // Convert a route string into a regular expression, suitable for matching
+    // against the current location hash.
+    _routeToRegExp: function(route) {
+      route = route.replace(escapeRegExp, '\\$&')
+                   .replace(optionalParam, '(?:$1)?')
+                   .replace(namedParam, function(match, optional){
+                     return optional ? match : '([^\/]+)';
+                   })
+                   .replace(splatParam, '(.*?)');
+      return new RegExp('^' + route + '$');
+    },
+
+    // Given a route, and a URL fragment that it matches, return the array of
+    // extracted parameters.
+    _extractParameters: function(route, fragment) {
+      return route.exec(fragment).slice(1);
+    }
+
+  });
+
+  // Backbone.History
+  // ----------------
+
+  // Handles cross-browser history management, based on URL fragments. If the
+  // browser does not support `onhashchange`, 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 = /\/$/;
+
+  // Has the history handling already been started?
+  History.started = false;
+
+  // Set up all inheritable **Backbone.History** properties and methods.
+  _.extend(History.prototype, Events, {
+
+    // The default interval to poll for hash changes, if necessary, is
+    // twenty times a second.
+    interval: 50,
+
+    // Gets the true hash value. Cannot use location.hash directly due to bug
+    // in Firefox where location.hash will always be decoded.
+    getHash: function(window) {
+      var match = (window || this).location.href.match(/#(.*)$/);
+      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 = this.location.pathname;
+          var root = this.root.replace(trailingSlash, '');
+          if (!fragment.indexOf(root)) fragment = fragment.substr(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) {
+        this.iframe = Backbone.$('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
+        this.navigate(fragment);
+      }
+
+      // Depending on whether we're using pushState or hashes, and whether
+      // 'onhashchange' is supported, determine how we check the URL state.
+      if (this._hasPushState) {
+        Backbone.$(window).on('popstate', this.checkUrl);
+      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
+        Backbone.$(window).on('hashchange', this.checkUrl);
+      } else if (this._wantsHashChange) {
+        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
+      }
+
+      // Determine if we need to change the base url, for a pushState link
+      // opened by a non-pushState browser.
+      this.fragment = fragment;
+      var loc = this.location;
+      var atRoot = loc.pathname.replace(/[^\/]$/, '$&/') === this.root;
+
+      // If we've started off with a route from a `pushState`-enabled browser,
+      // but we're currently in a browser that doesn't support it...
+      if (this._wantsHashChange && this._wantsPushState && !this._hasPushState && !atRoot) {
+        this.fragment = this.getFragment(null, true);
+        this.location.replace(this.root + this.location.search + '#' + this.fragment);
+        // Return immediately as browser will do redirect to new url
+        return true;
+
+      // Or if we've started out with a hash-based route, but we're currently
+      // in a browser where it could be `pushState`-based instead...
+      } else if (this._wantsPushState && this._hasPushState && atRoot && loc.hash) {
+        this.fragment = this.getHash().replace(routeStripper, '');
+        this.history.replaceState({}, document.title, this.root + this.fragment + loc.search);
+      }
+
+      if (!this.options.silent) return this.loadUrl();
+    },
+
+    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
+    // but possibly useful for unit testing Routers.
+    stop: function() {
+      Backbone.$(window).off('popstate', this.checkUrl).off('hashchange', this.checkUrl);
+      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() || this.loadUrl(this.getHash());
+    },
+
+    // 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(fragmentOverride) {
+      var fragment = this.fragment = this.getFragment(fragmentOverride);
+      var matched = _.any(this.handlers, function(handler) {
+        if (handler.route.test(fragment)) {
+          handler.callback(fragment);
+          return true;
+        }
+      });
+      return matched;
+    },
+
+    // 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};
+      fragment = this.getFragment(fragment || '');
+      if (this.fragment === fragment) return;
+      this.fragment = fragment;
+      var url = this.root + fragment;
+
+      // 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) 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:|#).*$/, '');
+        location.replace(href + '#' + fragment);
+      } else {
+        // Some browsers require that `hash` contains a leading #.
+        location.hash = '#' + fragment;
+      }
+    }
+
+  });
+
+  // Create the default Backbone.history.
+  Backbone.history = new History;
+
+  // Backbone.View
+  // -------------
+
+  // Creating a Backbone.View creates its initial element outside of the DOM,
+  // if an existing element is not provided...
+  var View = Backbone.View = function(options) {
+    this.cid = _.uniqueId('view');
+    this._configure(options || {});
+    this._ensureElement();
+    this.initialize.apply(this, arguments);
+    this.delegateEvents();
+  };
+
+  // Cached regex to split keys for `delegate`.
+  var delegateEventSplitter = /^(\S+)\s*(.*)$/;
+
+  // 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 prefered 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.undelegateEvents();
+      for (var key in events) {
+        var method = events[key];
+        if (!_.isFunction(method)) method = this[events[key]];
+        if (!method) throw new Error('Method "' + events[key] + '" does not exist');
+        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);
+        }
+      }
+    },
+
+    // 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.$el.off('.delegateEvents' + this.cid);
+    },
+
+    // Performs the initial configuration of a View with a set of options.
+    // Keys with special meaning *(model, collection, id, className)*, are
+    // attached directly to the view.
+    _configure: function(options) {
+      if (this.options) options = _.extend({}, _.result(this, 'options'), options);
+      _.extend(this, _.pick(options, viewOptions));
+      this.options = options;
+    },
+
+    // Ensure that the View has a DOM element to render into.
+    // If `this.el` is a string, pass it through `$()`, 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
+  // -------------
+
+  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+  var methodMap = {
+    'create': 'POST',
+    'update': 'PUT',
+    'patch':  'PATCH',
+    'delete': 'DELETE',
+    'read':   'GET'
+  };
+
+  // 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;
+    }
+
+    var success = options.success;
+    options.success = function(resp) {
+      if (success) success(model, resp, options);
+      model.trigger('sync', model, resp, options);
+    };
+
+    var error = options.error;
+    options.error = function(xhr) {
+      if (error) error(model, xhr, options);
+      model.trigger('error', model, xhr, options);
+    };
+
+    // 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;
+  };
+
+  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
+  Backbone.ajax = function() {
+    return Backbone.$.ajax.apply(Backbone.$, arguments);
+  };
+
+  // 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');
+  };
+
+}).call(this);
\ No newline at end of file

h/lib/underscore-1.4.3.js

+//     Underscore.js 1.4.3
+//     http://underscorejs.org
+//     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore may be freely distributed under the MIT license.
+
+(function() {
+
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` in the browser, or `global` on the server.
+  var root = this;
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var push             = ArrayProto.push,
+      slice            = ArrayProto.slice,
+      concat           = ArrayProto.concat,
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) {
+    if (obj instanceof _) return obj;
+    if (!(this instanceof _)) return new _(obj);
+    this._wrapped = obj;
+  };
+
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, add `_` as a global object via a string identifier,
+  // for Closure Compiler "advanced" mode.
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      exports = module.exports = _;
+    }
+    exports._ = _;
+  } else {
+    root._ = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.4.3';
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles objects with the built-in `forEach`, arrays, and raw objects.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
+  var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (obj.length === +obj.length) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      for (var key in obj) {
+        if (_.has(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
+        }
+      }
+    }
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
+  _.map = _.collect = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    each(obj, function(value, index, list) {
+      results[results.length] = iterator.call(context, value, index, list);
+    });
+    return results;
+  };
+
+  var reduceError = 'Reduce of empty array with no initial value';
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+    }
+    each(obj, function(value, index, list) {
+      if (!initial) {
+        memo = value;
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+    }
+    var length = obj.length;
+    if (length !== +length) {
+      var keys = _.keys(obj);
+      length = keys.length;
+    }
+    each(obj, function(value, index, list) {
+      index = keys ? keys[--length] : --length;
+      if (!initial) {
+        memo = obj[index];
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, obj[index], index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, iterator, context) {
+    var result;
+    any(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
+        result = value;
+        return true;
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, iterator, context) {
+    return _.filter(obj, function(value, index, list) {
+      return !iterator.call(context, value, index, list);
+    }, context);
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+    each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
+  // Aliased as `any`.
+  var any = _.some = _.any = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+    each(obj, function(value, index, list) {
+      if (result || (result = iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if the array or object contains a given value (using `===`).
+  // Aliased as `include`.
+  _.contains = _.include = function(obj, target) {
+    if (obj == null) return false;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    return any(obj, function(value) {
+      return value === target;
+    });
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = slice.call(arguments, 2);
+    return _.map(obj, function(value) {
+      return (_.isFunction(method) ? method : value[method]).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, function(value){ return value[key]; });
+  };
+
+  // Convenience version of a common use case of `filter`: selecting only objects
+  // with specific `key:value` pairs.
+  _.where = function(obj, attrs) {
+    if (_.isEmpty(attrs)) return [];
+    return _.filter(obj, function(value) {
+      for (var key in attrs) {
+        if (attrs[key] !== value[key]) return false;
+      }
+      return true;
+    });
+  };
+
+  // Return the maximum element or (element-based computation).
+  // Can't optimize arrays of integers longer than 65,535 elements.
+  // See: https://bugs.webkit.org/show_bug.cgi?id=80797
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.max.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return -Infinity;
+    var result = {computed : -Infinity, value: -Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed >= result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.min.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return Infinity;
+    var result = {computed : Infinity, value: Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed < result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Shuffle an array.
+  _.shuffle = function(obj) {
+    var rand;
+    var index = 0;
+    var shuffled = [];
+    each(obj, function(value) {
+      rand = _.random(index++);
+      shuffled[index - 1] = shuffled[rand];
+      shuffled[rand] = value;
+    });
+    return shuffled;
+  };
+
+  // An internal function to generate lookup iterators.
+  var lookupIterator = function(value) {
+    return _.isFunction(value) ? value : function(obj){ return obj[value]; };
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, value, context) {
+    var iterator = lookupIterator(value);
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value : value,
+        index : index,
+        criteria : iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria;
+      var b = right.criteria;
+      if (a !== b) {
+        if (a > b || a === void 0) return 1;
+        if (a < b || b === void 0) return -1;
+      }
+      return left.index < right.index ? -1 : 1;
+    }), 'value');
+  };
+
+  // An internal function used for aggregate "group by" operations.
+  var group = function(obj, value, context, behavior) {
+    var result = {};
+    var iterator = lookupIterator(value || _.identity);
+    each(obj, function(value, index) {
+      var key = iterator.call(context, value, index, obj);
+      behavior(result, key, value);
+    });
+    return result;
+  };
+
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key, value) {
+      (_.has(result, key) ? result[key] : (result[key] = [])).push(value);
+    });
+  };
+
+  // Counts instances of an object that group by a certain criterion. Pass
+  // either a string attribute to count by, or a function that returns the
+  // criterion.
+  _.countBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key) {
+      if (!_.has(result, key)) result[key] = 0;
+      result[key]++;
+    });
+  };
+
+  // Use a comparator function to figure out the smallest index at which
+  // an object should be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator, context) {
+    iterator = iterator == null ? _.identity : lookupIterator(iterator);
+    var value = iterator.call(context, obj);
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >>> 1;
+      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Safely convert anything iterable into a real, live array.
+  _.toArray = function(obj) {
+    if (!obj) return [];
+    if (_.isArray(obj)) return slice.call(obj);
+    if (obj.length === +obj.length) return _.map(obj, _.identity);
+    return _.values(obj);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    if (obj == null) return 0;
+    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
+  };
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head` and `take`. The **guard** check
+  // allows it to work with `_.map`.
+  _.first = _.head = _.take = function(array, n, guard) {
+    if (array == null) return void 0;
+    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the last entry of the array. Especially useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N. The **guard** check allows it to work with
+  // `_.map`.
+  _.initial = function(array, n, guard) {
+    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+  };
+
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array. The **guard** check allows it to work with `_.map`.
+  _.last = function(array, n, guard) {
+    if (array == null) return void 0;
+    if ((n != null) && !guard) {
+      return slice.call(array, Math.max(array.length - n, 0));
+    } else {
+      return array[array.length - 1];
+    }
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
+  // Especially useful on the arguments object. Passing an **n** will return
+  // the rest N values in the array. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = _.drop = function(array, n, guard) {
+    return slice.call(array, (n == null) || guard ? 1 : n);
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, _.identity);
+  };
+
+  // Internal implementation of a recursive `flatten` function.
+  var flatten = function(input, shallow, output) {
+    each(input, function(value) {
+      if (_.isArray(value)) {
+        shallow ? push.apply(output, value) : flatten(value, shallow, output);
+      } else {
+        output.push(value);
+      }
+    });
+    return output;
+  };
+
+  // Return a completely flattened version of an array.
+  _.flatten = function(array, shallow) {
+    return flatten(array, shallow, []);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    return _.difference(array, slice.call(arguments, 1));
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted, iterator, context) {
+    if (_.isFunction(isSorted)) {
+      context = iterator;
+      iterator = isSorted;
+      isSorted = false;
+    }
+    var initial = iterator ? _.map(array, iterator, context) : array;
+    var results = [];
+    var seen = [];
+    each(initial, function(value, index) {
+      if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
+        seen.push(value);
+        results.push(array[index]);
+      }
+    });
+    return results;
+  };
+
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = function() {
+    return _.uniq(concat.apply(ArrayProto, arguments));
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersection = function(array) {
+    var rest = slice.call(arguments, 1);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.indexOf(other, item) >= 0;
+      });
+    });
+  };
+
+  // Take the difference between one array and a number of other arrays.
+  // Only the elements present in just the first array will remain.
+  _.difference = function(array) {
+    var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
+    return _.filter(array, function(value){ return !_.contains(rest, value); });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var args = slice.call(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) {
+      results[i] = _.pluck(args, "" + i);
+    }
+    return results;
+  };
+
+  // Converts lists into objects. Pass either a single array of `[key, value]`
+  // pairs, or two parallel arrays of the same length -- one of keys, and one of
+  // the corresponding values.
+  _.object = function(list, values) {
+    if (list == null) return {};
+    var result = {};
+    for (var i = 0, l = list.length; i < l; i++) {
+      if (values) {
+        result[list[i]] = values[i];
+      } else {
+        result[list[i][0]] = list[i][1];
+      }
+    }
+    return result;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+  // we need this function. Return the position of the first occurrence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
+    var i = 0, l = array.length;
+    if (isSorted) {
+      if (typeof isSorted == 'number') {
+        i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted);
+      } else {
+        i = _.sortedIndex(array, item);
+        return array[i] === item ? i : -1;
+      }
+    }
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
+    for (; i < l; i++) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+  _.lastIndexOf = function(array, item, from) {
+    if (array == null) return -1;
+    var hasIndex = from != null;
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
+      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
+    }
+    var i = (hasIndex ? from : array.length);
+    while (i--) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var len = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(len);
+
+    while(idx < len) {
+      range[idx++] = start;
+      start += step;
+    }
+
+    return range;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Reusable constructor function for prototype setting.
+  var ctor = function(){};
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Binding with arguments is also known as `curry`.
+  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
+  // We check for `func.bind` first, to fail fast when `func` is undefined.
+  _.bind = function(func, context) {
+    var args, bound;
+    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+    if (!_.isFunction(func)) throw new TypeError;
+    args = slice.call(arguments, 2);
+    return bound = function() {
+      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+      ctor.prototype = func.prototype;
+      var self = new ctor;
+      ctor.prototype = null;
+      var result = func.apply(self, args.concat(slice.call(arguments)));
+      if (Object(result) === result) return result;
+      return self;
+    };
+  };
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
+  // all callbacks defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length == 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher || (hasher = _.identity);
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = slice.call(arguments, 2);
+    return setTimeout(function(){ return func.apply(null, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    var context, args, timeout, result;
+    var previous = 0;
+    var later = function() {
+      previous = new Date;
+      timeout = null;
+      result = func.apply(context, args);
+    };
+    return function() {
+      var now = new Date;
+      var remaining = wait - (now - previous);
+      context = this;
+      args = arguments;
+      if (remaining <= 0) {
+        clearTimeout(timeout);
+        timeout = null;
+        previous = now;
+        result = func.apply(context, args);
+      } else if (!timeout) {
+        timeout = setTimeout(later, remaining);
+      }
+      return result;
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds. If `immediate` is passed, trigger the function on the
+  // leading edge, instead of the trailing.
+  _.debounce = function(func, wait, immediate) {
+    var timeout, result;
+    return function() {
+      var context = this, args = arguments;
+      var later = function() {
+        timeout = null;
+        if (!immediate) result = func.apply(context, args);
+      };
+      var callNow = immediate && !timeout;
+      clearTimeout(timeout);
+      timeout = setTimeout(later, wait);
+      if (callNow) result = func.apply(context, args);
+      return result;
+    };
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = function(func) {
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      memo = func.apply(this, arguments);
+      func = null;
+      return memo;
+    };
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return function() {
+      var args = [func];
+      push.apply(args, arguments);
+      return wrapper.apply(this, args);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = arguments;
+    return function() {
+      var args = arguments;
+      for (var i = funcs.length - 1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // Returns a function that will only be executed after being called N times.
+  _.after = function(times, func) {
+    if (times <= 0) return func();
+    return function() {
+      if (--times < 1) {
+        return func.apply(this, arguments);
+      }
+    };
+  };
+
+  // Object Functions
+  // ----------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  _.keys = nativeKeys || function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
+    var keys = [];
+    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    var values = [];
+    for (var key in obj) if (_.has(obj, key)) values.push(obj[key]);
+    return values;
+  };
+
+  // Convert an object into a list of `[key, value]` pairs.
+  _.pairs = function(obj) {
+    var pairs = [];
+    for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]);
+    return pairs;
+  };
+
+  // Invert the keys and values of an object. The values must be serializable.
+  _.invert = function(obj) {
+    var result = {};
+    for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key;
+    return result;
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Return a copy of the object only containing the whitelisted properties.
+  _.pick = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    each(keys, function(key) {
+      if (key in obj) copy[key] = obj[key];
+    });
+    return copy;
+  };
+
+   // Return a copy of the object without the blacklisted properties.
+  _.omit = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    for (var key in obj) {
+      if (!_.contains(keys, key)) copy[key] = obj[key];
+    }
+    return copy;
+  };
+
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          if (obj[prop] == null) obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Internal recursive comparison function for `isEqual`.
+  var eq = function(a, b, aStack, bStack) {
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
+    if (a === b) return a !== 0 || 1 / a == 1 / b;
+    // A strict comparison is necessary because `null == undefined`.
+    if (a == null || b == null) return a === b;
+    // Unwrap any wrapped objects.
+    if (a instanceof _) a = a._wrapped;
+    if (b instanceof _) b = b._wrapped;
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className != toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, dates, and booleans are compared by value.
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return a == String(b);
+      case '[object Number]':
+        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+        // other numeric values.
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+      case '[object Date]':
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
+        return +a == +b;
+      // RegExps are compared by their source patterns and flags.
+      case '[object RegExp]':
+        return a.source == b.source &&
+               a.global == b.global &&
+               a.multiline == b.multiline &&
+               a.ignoreCase == b.ignoreCase;
+    }
+    if (typeof a != 'object' || typeof b != 'object') return false;
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+    var length = aStack.length;
+    while (length--) {
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
+      if (aStack[length] == a) return bStack[length] == b;
+    }
+    // Add the first object to the stack of traversed objects.
+    aStack.push(a);
+    bStack.push(b);
+    var size = 0, result = true;
+    // Recursively compare objects and arrays.
+    if (className == '[object Array]') {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare the contents, ignoring non-numeric properties.
+        while (size--) {
+          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
+        }
+      }
+    } else {
+      // Objects with different constructors are not equivalent, but `Object`s
+      // from different frames are.
+      var aCtor = a.constructor, bCtor = b.constructor;
+      if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
+                               _.isFunction(bCtor) && (bCtor instanceof bCtor))) {
+        return false;
+      }
+      // Deep compare objects.
+      for (var key in a) {
+        if (_.has(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (_.has(b, key) && !(size--)) break;
+        }
+        result = !size;
+      }
+    }
+    // Remove the first object from the stack of traversed objects.
+    aStack.pop();
+    bStack.pop();
+    return result;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b, [], []);
+  };
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  _.isEmpty = function(obj) {
+    if (obj == null) return true;
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (_.has(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType === 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) == '[object Array]';
+  };
+
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    return obj === Object(obj);
+  };
+
+  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
+  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
+    _['is' + name] = function(obj) {
+      return toString.call(obj) == '[object ' + name + ']';
+    };
+  });
+
+  // Define a fallback version of the method in browsers (ahem, IE), where
+  // there isn't any inspectable "Arguments" type.
+  if (!_.isArguments(arguments)) {
+    _.isArguments = function(obj) {
+      return !!(obj && _.has(obj, 'callee'));
+    };
+  }
+
+  // Optimize `isFunction` if appropriate.
+  if (typeof (/./) !== 'function') {
+    _.isFunction = function(obj) {
+      return typeof obj === 'function';
+    };
+  }
+
+  // Is a given object a finite number?
+  _.isFinite = function(obj) {
+    return isFinite(obj) && !isNaN(parseFloat(obj));
+  };
+
+  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && obj != +obj;
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Shortcut function for checking if an object has a given property directly
+  // on itself (in other words, not on a prototype).
+  _.has = function(obj, key) {
+    return hasOwnProperty.call(obj, key);
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Run a function **n** times.
+  _.times = function(n, iterator, context) {
+    var accum = Array(n);
+    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
+    return accum;
+  };
+
+  // Return a random integer between min and max (inclusive).
+  _.random = function(min, max) {
+    if (max == null) {
+      max = min;
+      min = 0;
+    }
+    return min + (0 | Math.random() * (max - min + 1));
+  };
+
+  // List of HTML entities for escaping.
+  var entityMap = {
+    escape: {
+      '&': '&amp;',
+      '<': '&lt;',
+      '>': '&gt;',
+      '"': '&quot;',
+      "'": '&#x27;',
+      '/': '&#x2F;'
+    }
+  };
+  entityMap.unescape = _.invert(entityMap.escape);
+
+  // Regexes containing the keys and values listed immediately above.
+  var entityRegexes = {
+    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
+    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
+  };
+
+  // Functions for escaping and unescaping strings to/from HTML interpolation.
+  _.each(['escape', 'unescape'], function(method) {
+    _[method] = function(string) {
+      if (string == null) return '';
+      return ('' + string).replace(entityRegexes[method], function(match) {
+        return entityMap[method][match];
+      });
+    };
+  });
+
+  // If the value of the named property is a function then invoke it;
+  // otherwise, return it.
+  _.result = function(object, property) {
+    if (object == null) return null;
+    var value = object[property];
+    return _.isFunction(value) ? value.call(object) : value;
+  };
+
+  // Add your own custom functions to the Underscore object.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name){
+      var func = _[name] = obj[name];
+      _.prototype[name] = function() {
+        var args = [this._wrapped];
+        push.apply(args, arguments);
+        return result.call(this, func.apply(_, args));
+      };
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = '' + ++idCounter;
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g,
+    escape      : /<%-([\s\S]+?)%>/g
+  };
+
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /(.)^/;
+
+  // Certain characters need to be escaped so that they can be put into a
+  // string literal.
+  var escapes = {
+    "'":      "'",
+    '\\':     '\\',
+    '\r':     'r',
+    '\n':     'n',
+    '\t':     't',
+    '\u2028': 'u2028',
+    '\u2029': 'u2029'
+  };
+
+  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  _.template = function(text, data, settings) {
+    settings = _.defaults({}, settings, _.templateSettings);
+
+    // Combine delimiters into one regular expression via alternation.
+    var matcher = new RegExp([
+      (settings.escape || noMatch).source,
+      (settings.interpolate || noMatch).source,
+      (settings.evaluate || noMatch).source
+    ].join('|') + '|$', 'g');
+
+    // Compile the template source, escaping string literals appropriately.
+    var index = 0;
+    var source = "__p+='";
+    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
+      source += text.slice(index, offset)
+        .replace(escaper, function(match) { return '\\' + escapes[match]; });
+
+      if (escape) {
+        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
+      }
+      if (interpolate) {
+        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
+      }
+      if (evaluate) {
+        source += "';\n" + evaluate + "\n__p+='";
+      }
+      index = offset + match.length;
+      return match;
+    });
+    source += "';\n";
+
+    // If a variable is not specified, place data values in local scope.
+    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
+
+    source = "var __t,__p='',__j=Array.prototype.join," +
+      "print=function(){__p+=__j.call(arguments,'');};\n" +
+      source + "return __p;\n";
+
+    try {
+      var render = new Function(settings.variable || 'obj', '_', source);
+    } catch (e) {
+      e.source = source;
+      throw e;
+    }
+
+    if (data) return render(data, _);
+    var template = function(data) {
+      return render.call(this, data, _);
+    };
+
+    // Provide the compiled function source as a convenience for precompilation.
+    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';
+
+    return template;
+  };
+
+  // Add a "chain" function, which will delegate to the wrapper.
+  _.chain = function(obj) {
+    return _(obj).chain();
+  };
+
+  // OOP
+  // ---------------
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj) {
+    return this._chain ? _(obj).chain() : obj;
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      var obj = this._wrapped;
+      method.apply(obj, arguments);
+      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
+      return result.call(this, obj);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      return result.call(this, method.apply(this._wrapped, arguments));
+    };
+  });
+
+  _.extend(_.prototype, {
+
+    // Start chaining a wrapped Underscore object.
+    chain: function() {
+      this._chain = true;
+      return this;
+    },
+
+    // Extracts the result from a wrapped and chained object.
+    value: function() {
+      return this._wrapped;
+    }
+
+  });
+
+}).call(this);
\ No newline at end of file

h/lib/visualsearch.css

+.VS-search .VS-icon {
+  background-repeat: no-repeat;
+  background-position: center center;
+  vertical-align: middle;
+  width: 16px; height: 16px;
+}
+  .VS-search .VS-icon-cancel {
+    width: 11px; height: 11px;
+    background-position: center 0;
+    background-image: url(../images/embed/icons/cancel_search.png?1311104738);
+    cursor: pointer;
+  }
+    .VS-search .VS-icon-cancel:hover {
+      background-position: center -11px;
+    }
+  .VS-search .VS-icon-search {
+    width: 12px; height: 12px;
+    background-image: url(../images/embed/icons/search_glyph.png?1311104738);
+  }
+
+/*------------------------------ RESET + DEFAULT STYLES ---------------------------------*/
+
+/* 
+Eric Meyer's final reset.css
+Source: http://meyerweb.com/eric/thoughts/2007/05/01/reset-reloaded/ 
+*/
+.VS-search div, .VS-search span, .VS-search a, .VS-search img, 
+.VS-search ul, .VS-search li, .VS-search form, .VS-search label,
+.VS-interface ul, .VS-interface li, .VS-interface {
+  margin: 0;
+  padding: 0;
+  border: 0;
+  outline: 0;
+  font-weight: inherit;
+  font-style: inherit;
+  font-size: 100%;
+  font-family: inherit;
+  vertical-align: baseline;
+}
+
+.VS-search :focus {
+  outline: 0;
+}
+.VS-search {
+  line-height: 1;
+  color: black;
+}
+.VS-search ol, .VS-search ul {
+  list-style: none;
+}
+
+/* ===================== */
+/* = General and Reset = */
+/* ===================== */
+
+.VS-search {
+  font-family: Arial, sans-serif;
+  color: #373737;
+  font-size: 12px;
+}
+.VS-search input {
+  display: block;
+  border: none;
+  -moz-box-shadow: none;
+  -webkit-box-shadow: none;
+  box-shadow: none;
+  outline: none;
+  margin: 0; padding: 4px;
+  background: transparent;
+  font-size: 16px;
+  line-height: 20px;
+  width: 100%;
+}
+.VS-interface, .VS-search .dialog, .VS-search input {
+  font-family: "Lucida Grande", "Lucida Sans Unicode", Helvetica, Arial, sans-serif !important;
+  line-height: 1.1em;
+}
+
+/* ========== */
+/* = Layout = */
+/* ========== */
+
+.VS-search .VS-search-box {
+  cursor: text;
+  position: relative;
+  background: transparent;
+  border: 2px solid #ccc;
+  border-radius: 16px; -webkit-border-radius: 16px; -moz-border-radius: 16px;
+  background-color: #fafafa;
+  -webkit-box-shadow: inset 0px 0px 3px #ccc;
+  -moz-box-shadow: inset 0px 0px 3px #ccc;
+  box-shadow: inset 0px 0px 3px #ccc;
+  min-height: 28px;
+  height: auto;
+}
+  .VS-search .VS-search-box.VS-focus {
+    border-color: #acf;
+    -webkit-box-shadow: inset 0px 0px 3px #acf;
+    -moz-box-shadow: inset 0px 0px 3px #acf;
+    box-shadow: inset 0px 0px 3px #acf;
+  }
+  .VS-search .VS-placeholder {
+      position: absolute;
+      top: 7px;
+      left: 4px;
+      margin: 0 20px 0 22px;
+      color: #808080;
+      font-size: 14px;
+  }
+  .VS-search .VS-search-box.VS-focus .VS-placeholder,
+  .VS-search .VS-search-box .VS-placeholder.VS-hidden {
+      display: none;
+  }
+  .VS-search .VS-search-inner {
+    position: relative;
+    margin: 0 20px 0 22px;
+    overflow: hidden;
+  }
+  .VS-search input {
+    width: 100px;
+  }
+  .VS-search input,
+  .VS-search .VS-input-width-tester {
+    padding: 6px 0;
+    float: left;
+    color: #808080;
+    font: 13px/17px Helvetica, Arial;
+  }
+  .VS-search.VS-focus input {
+    color: #606060;
+  }
+  .VS-search .VS-icon-search {
+    position: absolute;
+    left: 9px; top: 8px;
+  }
+  .VS-search .VS-icon-cancel {
+    position: absolute;
+    right: 9px; top: 8px;
+  }
+
+/* ================ */
+/* = Search Facet = */
+/* ================ */
+
+.VS-search .search_facet {
+  float: left;
+  margin: 0;
+  padding: 0 0 0 14px;
+  position: relative;
+  border: 1px solid transparent;
+  height: 20px;
+  margin: 3px -3px 3px 0;
+}
+  .VS-search .search_facet.is_selected {
+    margin-left: -3px;
+    -webkit-border-radius: 16px;
+    -moz-border-radius: 16px;
+    border-radius: 16px;
+    background-color: #d2e6fd;
+    background-image: -moz-linear-gradient(top, #d2e6fd, #b0d1f9); /* FF3.6 */
+    background-image: -webkit-gradient(linear, left top, left bottom, from(#d2e6fd), to(#b0d1f9)); /* Saf4+, Chrome */
+    background-image: linear-gradient(top, #d2e6fd, #b0d1f9);
+    border: 1px solid #6eadf5;
+  }
+  .VS-search .search_facet .category {
+    float: left;
+    text-transform: uppercase;
+    font-weight: bold;
+    font-size: 10px;
+    color: #808080;
+    padding: 8px 0 5px;
+    line-height: 13px;
+    cursor: pointer;
+    padding: 4px 0 0;
+  }
+  .VS-search .search_facet.is_selected .category {
+    margin-left: 3px;
+  }
+  .VS-search .search_facet .search_facet_input_container {
+    float: left;
+  }
+  .VS-search .search_facet input {
+    margin: 0;
+    padding: 0;
+    color: #000;
+    font-size: 13px;
+    line-height: 16px;
+    padding: 5px 0 5px 4px;
+    height: 16px;
+    width: auto;
+    z-index: 100;
+    position: relative;
+    padding-top: 1px;
+    padding-bottom: 2px;
+    padding-right: 3px;
+
+  }
+  .VS-search .search_facet.is_editing input,
+  .VS-search .search_facet.is_selected input {
+    color: #000;
+  }
+  .VS-search .search_facet .search_facet_remove {
+    position: absolute;
+    left: 0;
+    top: 4px;
+  }
+    .VS-search .search_facet.is_selected .search_facet_remove {
+      opacity: 0.4;
+      left: 3px;
+      filter: alpha(opacity=40);
+      background-position: center -11px;
+    }
+    .VS-search .search_facet .search_facet_remove:hover {
+      opacity: 1;
+    }
+  .VS-search .search_facet.is_editing .category,
+  .VS-search .search_facet.is_selected .category {
+    color: #000;
+  }
+  .VS-search .search_facet.search_facet_maybe_delete .category,
+  .VS-search .search_facet.search_facet_maybe_delete input {
+    color: darkred;
+  }
+
+/* ================ */
+/* = Search Input = */
+/* ================ */
+
+.VS-search .search_input {
+  height: 28px;
+  float: left;
+  margin-left: -1px;
+}
+  .VS-search .search_input input {
+    padding: 6px 3px 6px 2px;
+    line-height: 10px;
+    height: 22px;
+    margin-top: -4px;
+    width: 10px;
+    z-index: 100;
+    min-width: 4px;
+    position: relative;
+  }
+  .VS-search .search_input.is_editing input {
+    color: #202020;
+  }
+
+/* ================ */
+/* = Autocomplete = */
+/* ================ */
+
+.ui-helper-hidden-accessible {
+    display: none;
+}
+
+.VS-interface.ui-autocomplete {
+  position: absolute;
+  border: 1px solid #C0C0C0;
+  border-top: 1px solid #D9D9D9;
+  background-color: #F6F6F6;
+  cursor: pointer;
+  z-index: 10000;
+  padding: 0;
+  margin: 0;
+  width: auto;
+  min-width: 80px;
+  max-width: 220px;
+  max-height: 240px;
+  overflow-y: auto;
+  overflow-x: hidden;
+  font-size: 13px;
+  top: 5px;
+  opacity: 0.97;
+  box-shadow: 3px 4px 5px -2px rgba(0, 0, 0, 0.5); -webkit-box-shadow: 3px 4px 5px -2px rgba(0, 0, 0, 0.5); -moz-box-shadow: 3px 4px 5px -2px rgba(0, 0, 0, 0.5);
+}
+  .VS-interface.ui-autocomplete .ui-autocomplete-category {
+    text-transform: capitalize;
+    font-size: 11px;
+    padding: 4px 4px 4px;
+    border-top: 1px solid #A2A2A2;
+    border-bottom: 1px solid #A2A2A2;
+    background-color: #B7B7B7;
+    text-shadow: 0 -1px 0 #999;
+    font-weight: bold;
+    color: white;
+    cursor: default;
+  }
+  .VS-interface.ui-autocomplete .ui-menu-item {
+      float: none;
+  }
+  .VS-interface.ui-autocomplete .ui-menu-item a {
+    color: #000;
+    outline: none;
+    display: block;
+    padding: 3px 4px 5px;
+    border-radius: none;
+    line-height: 1;
+    background-color: #F8F8F8;
+    background-image: -moz-linear-gradient(top, #F8F8F8, #F3F3F3); /* FF3.6 */
+    background-image: -webkit-gradient(linear, left top, left bottom, from(#F8F8F8), to(#F3F3F3)); /* Saf4+, Chrome */
+    background-image: linear-gradient(top, #F8F8F8, #F3F3F3);
+    border-top: 1px solid #FAFAFA;
+    border-bottom: 1px solid #f0f0f0;
+  }
+  .VS-interface.ui-autocomplete .ui-menu-item a:active {
+    outline: none;
+  }
+  .VS-interface.ui-autocomplete .ui-menu-item .ui-state-hover, .VS-interface.ui-autocomplete .ui-menu-item .ui-state-focus {
+    background-color: #6483F7;
+    background-image: -moz-linear-gradient(top, #648bF5, #2465f3); /* FF3.6 */
+    background-image: -webkit-gradient(linear, left top, left bottom, from(#648bF5), to(#2465f3)); /* Saf4+, Chrome */
+    background-image: linear-gradient(top, #648bF5, #2465f3);
+    border-top: 1px solid #5b83ec;
+    border-bottom: 1px solid #1459e9;
+    border-left: none;
+    border-right: none;
+    color: white;
+    margin: 0;
+  }
+  .VS-interface.ui-autocomplete .ui-corner-all {
+    border-radius: 0;
+  }
+  .VS-interface.ui-autocomplete li {
+    list-style: none;
+    width: auto;
+  }

h/lib/visualsearch.js

+// This is the annotated source code for
+// [VisualSearch.js](http://documentcloud.github.com/visualsearch/),
+// a rich search box for real data.
+// 
+// The annotated source HTML is generated by
+// [Docco](http://jashkenas.github.com/docco/).
+
+/** @license VisualSearch.js 0.4.0
+ *  (c) 2011 Samuel Clay, @samuelclay, DocumentCloud Inc.
+ *  VisualSearch.js may be freely distributed under the MIT license.
+ *  For all details and documentation:
+ *  http://documentcloud.github.com/visualsearch
+ */
+
+(function() {
+
+  var $ = jQuery; // Handle namespaced jQuery
+
+  // Setting up VisualSearch globals. These will eventually be made instance-based.
+  if (!window.VS) window.VS = {};
+  if (!VS.app)    VS.app    = {};
+  if (!VS.ui)     VS.ui     = {};
+  if (!VS.model)  VS.model  = {};
+  if (!VS.utils)  VS.utils  = {};
+
+  // Sets the version for VisualSearch to be used programatically elsewhere.
+  VS.VERSION = '0.4.0';
+
+  VS.VisualSearch = function(options) {
+    var defaults = {
+      container   : '',
+      query       : '',
+      autosearch  : true,
+      unquotable  : [],
+      remainder   : 'text',
+      showFacets  : true,
+      callbacks   : {
+        search          : $.noop,
+        focus           : $.noop,
+        blur            : $.noop,
+        facetMatches    : $.noop,
+        valueMatches    : $.noop
+      }
+    };
+    this.options           = _.extend({}, defaults, options);
+    this.options.callbacks = _.extend({}, defaults.callbacks, options.callbacks);
+    
+    VS.app.hotkeys.initialize();
+    this.searchQuery   = new VS.model.SearchQuery();
+    this.searchBox     = new VS.ui.SearchBox({
+        app: this, 
+        showFacets: this.options.showFacets
+    });
+
+    if (options.container) {
+      var searchBox = this.searchBox.render().el;
+      $(this.options.container).html(searchBox);
+    }
+    this.searchBox.value(this.options.query || '');
+
+    // Disable page caching for browsers that incorrectly cache the visual search inputs.
+    // This is forced the browser to re-render the page when it is retrieved in its history.
+    $(window).bind('unload', function(e) {});
+
+    // Gives the user back a reference to the `searchBox` so they
+    // can use public methods.
+    return this;
+  };
+
+  // Entry-point used to tie all parts of VisualSearch together. It will either attach
+  // itself to `options.container`, or pass back the `searchBox` so it can be rendered
+  // at will.
+  VS.init = function(options) {
+    return new VS.VisualSearch(options);
+  };
+
+})();
+
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// The search box is responsible for managing the many facet views and input views.
+VS.ui.SearchBox = Backbone.View.extend({
+
+  id  : 'search',
+
+  events : {
+    'click .VS-cancel-search-box' : 'clearSearch',
+    'mousedown .VS-search-box'    : 'maybeFocusSearch',
+    'dblclick .VS-search-box'     : 'highlightSearch',
+    'click .VS-search-box'        : 'maybeTripleClick'
+  },
+
+  // Creating a new SearchBox registers handlers for re-rendering facets when necessary,
+  // as well as handling typing when a facet is selected.
+  initialize : function() {
+    this.app = this.options.app;
+    this.flags = {
+      allSelected : false
+    };
+    this.facetViews = [];
+    this.inputViews = [];
+    _.bindAll(this, 'renderFacets', '_maybeDisableFacets', 'disableFacets',
+              'deselectAllFacets', 'addedFacet', 'removedFacet', 'changedFacet');
+    this.app.searchQuery
+            .bind('reset', this.renderFacets)
+            .bind('add', this.addedFacet)
+            .bind('remove', this.removedFacet)
+            .bind('change', this.changedFacet);
+    $(document).bind('keydown', this._maybeDisableFacets);
+  },
+
+  // Renders the search box, but requires placement on the page through `this.el`.
+  render : function() {
+    $(this.el).append(JST['search_box']({}));
+    $(document.body).setMode('no', 'search');
+
+    return this;
+  },
+
+  // # Querying Facets #
+
+  // Either gets a serialized query string or sets the faceted query from a query string.
+  value : function(query) {
+    if (query == null) return this.serialize();
+    return this.setQuery(query);
+  },
+
+  // Uses the VS.app.searchQuery collection to serialize the current query from the various
+  // facets that are in the search box.
+  serialize : function() {
+    var query           = [];
+    var inputViewsCount = this.inputViews.length;
+
+    this.app.searchQuery.each(_.bind(function(facet, i) {
+      query.push(this.inputViews[i].value());
+      query.push(facet.serialize());
+    }, this));
+
+    if (inputViewsCount) {
+      query.push(this.inputViews[inputViewsCount-1].value());
+    }
+
+    return _.compact(query).join(' ');
+  },
+  
+  // Returns any facet views that are currently selected. Useful for changing the value
+  // callbacks based on what else is in the search box and which facet is being edited.
+  selected: function() {
+    return _.select(this.facetViews, function(view) { 
+      return view.modes.editing == 'is' || view.modes.selected == 'is';
+    });
+  },
+  
+  // Similar to `this.selected`, returns any facet models that are currently selected.
+  selectedModels: function() {
+    return _.pluck(this.selected(), 'model');
+  },
+
+  // Takes a query string and uses the SearchParser to parse and render it. Note that
+  // `VS.app.SearchParser` refreshes the `VS.app.searchQuery` collection, which is bound
+  // here to call `this.renderFacets`.
+  setQuery : function(query) {
+    this.currentQuery = query;
+    VS.app.SearchParser.parse(this.app, query);
+  },
+
+  // Returns the position of a facet/input view. Useful when moving between facets.
+  viewPosition : function(view) {
+    var views    = view.type == 'facet' ? this.facetViews : this.inputViews;
+    var position = _.indexOf(views, view);
+    if (position == -1) position = 0;
+    return position;
+  },
+
+  // Used to launch a search. Hitting enter or clicking the search button.
+  searchEvent : function(e) {
+    var query = this.value();
+    this.focusSearch(e);
+    this.value(query);
+    this.app.options.callbacks.search(query, this.app.searchQuery);
+  },
+
+  // # Rendering Facets #
+
+  // Add a new facet. Facet will be focused and ready to accept a value. Can also
+  // specify position, in the case of adding facets from an inbetween input.
+  addFacet : function(category, initialQuery, position) {
+    category     = VS.utils.inflector.trim(category);
+    initialQuery = VS.utils.inflector.trim(initialQuery || '');
+    if (!category) return;
+    
+    var model = new VS.model.SearchFacet({
+      category : category,
+      value    : initialQuery || '',
+      app      : this.app
+    });
+    this.app.searchQuery.add(model, {at: position});
+  },
+
+  // Renders a newly added facet, and selects it.
+  addedFacet : function (model) {
+    this.renderFacets();
+    var facetView = _.detect(this.facetViews, function(view) {
+      if (view.model == model) return true;
+    });
+
+    _.defer(function() {
+      facetView.enableEdit();
+    });
+  },
+
+  // Changing a facet programmatically re-renders it.
+  changedFacet: function () {
+    this.renderFacets();
+  },
+
+  // When removing a facet, potentially do something. For now, the adjacent
+  // remaining facet is selected, but this is handled by the facet's view,
+  // since its position is unknown by the time the collection triggers this
+  // remove callback.
+  removedFacet : function (facet, query, options) {},
+
+  // Renders each facet as a searchFacet view.
+  renderFacets : function() {
+    this.facetViews = [];
+    this.inputViews = [];
+
+    this.$('.VS-search-inner').empty();
+
+    this.app.searchQuery.each(_.bind(this.renderFacet, this));
+
+    // Add on an n+1 empty search input on the very end.
+    this.renderSearchInput();
+    this.renderPlaceholder();
+  },
+
+  // Render a single facet, using its category and query value.
+  renderFacet : function(facet, position) {
+    var view = new VS.ui.SearchFacet({
+      app   : this.app,
+      model : facet,
+      order : position
+    });
+
+    // Input first, facet second.
+    this.renderSearchInput();
+    this.facetViews.push(view);
+    this.$('.VS-search-inner').children().eq(position*2).after(view.render().el);
+
+    view.calculateSize();
+    _.defer(_.bind(view.calculateSize, view));
+
+    return view;
+  },
+
+  // Render a single input, used to create and autocomplete facets
+  renderSearchInput : function() {
+    var input = new VS.ui.SearchInput({
+      position: this.inputViews.length, 
+      app: this.app,
+      showFacets: this.options.showFacets
+    });
+    this.$('.VS-search-inner').append(input.render().el);
+    this.inputViews.push(input);
+  },
+  
+  // Handles showing/hiding the placeholder text
+  renderPlaceholder : function() {
+    var $placeholder = this.$('.VS-placeholder');
+    if (this.app.searchQuery.length) {
+      $placeholder.addClass("VS-hidden");
+    } else {
+      $placeholder.removeClass("VS-hidden")
+                  .text(this.app.options.placeholder);
+    }
+  },
+
+  // # Modifying Facets #
+
+  // Clears out the search box. Command+A + delete can trigger this, as can a cancel button.
+  //
+  // If a `clearSearch` callback was provided, the callback is invoked and
+  // provided with a function performs the actual removal of the data.  This
+  // allows third-party developers to either clear data asynchronously, or
+  // prior to performing their custom "clear" logic.
+  clearSearch : function(e) {
+    var actualClearSearch = _.bind(function() {
+      this.disableFacets();
+      this.value('');
+      this.flags.allSelected = false;
+      this.searchEvent(e);
+      this.focusSearch(e);
+    }, this);
+
+    if (this.app.options.callbacks.clearSearch) {
+      this.app.options.callbacks.clearSearch(actualClearSearch);
+    } else {
+      actualClearSearch();
+    }
+  },
+
+  // Command+A selects all facets.
+  selectAllFacets : function() {
+    this.flags.allSelected = true;
+
+    $(document).one('click.selectAllFacets', this.deselectAllFacets);
+
+    _.each(this.facetViews, function(facetView, i) {
+      facetView.selectFacet();
+    });
+    _.each(this.inputViews, function(inputView, i) {
+      inputView.selectText();
+    });
+  },
+
+  // Used by facets and input to see if all facets are currently selected.
+  allSelected : function(deselect) {
+    if (deselect) this.flags.allSelected = false;
+    return this.flags.allSelected;
+  },
+
+  // After `selectAllFacets` is engaged, this method is bound to the entire document.
+  // This immediate disables and deselects all facets, but it also checks if the user
+  // has clicked on either a facet or an input, and properly selects the view.
+  deselectAllFacets : function(e) {
+    this.disableFacets();
+
+    if (this.$(e.target).is('.category,input')) {
+      var el   = $(e.target).closest('.search_facet,.search_input');
+      var view = _.detect(this.facetViews.concat(this.inputViews), function(v) {
+        return v.el == el[0];
+      });
+      if (view.type == 'facet') {
+        view.selectFacet();
+      } else if (view.type == 'input') {
+        _.defer(function() {
+          view.enableEdit(true);
+        });
+      }
+    }
+  },
+
+  // Disables all facets except for the passed in view. Used when switching between
+  // facets, so as not to have to keep state of active facets.
+  disableFacets : function(keepView) {
+    _.each(this.inputViews, function(view) {
+      if (view && view != keepView &&
+          (view.modes.editing == 'is' || view.modes.selected == 'is')) {
+        view.disableEdit();
+      }
+    });
+    _.each(this.facetViews, function(view) {
+      if (view && view != keepView &&
+          (view.modes.editing == 'is' || view.modes.selected == 'is')) {
+        view.disableEdit();
+        view.deselectFacet();
+      }
+    });
+
+    this.flags.allSelected = false;
+    this.removeFocus();
+    $(document).unbind('click.selectAllFacets');
+  },
+
+  // Resize all inputs to account for extra keystrokes which may be changing the facet
+  // width incorrectly. This is a safety check to ensure inputs are correctly sized.
+  resizeFacets : function(view) {
+    _.each(this.facetViews, function(facetView, i) {
+      if (!view || facetView == view) {
+        facetView.resize();
+      }
+    });
+  },
+
+  // Handles keydown events on the document. Used to complete the Cmd+A deletion, and
+  // blurring focus.
+  _maybeDisableFacets : function(e) {
+    if (this.flags.allSelected && VS.app.hotkeys.key(e) == 'backspace') {
+      e.preventDefault();
+      this.clearSearch(e);
+      return false;
+    } else if (this.flags.allSelected && VS.app.hotkeys.printable(e)) {
+      this.clearSearch(e);
+    }
+  },
+
+  // # Focusing Facets #
+
+  // Move focus between facets and inputs. Takes a direction as well as many options
+  // for skipping over inputs and only to facets, placement of cursor position in facet
+  // (i.e. at the end), and selecting the text in the input/facet.
+  focusNextFacet : function(currentView, direction, options) {
+    options = options || {};
+    var viewCount    = this.facetViews.length;
+    var viewPosition = options.viewPosition || this.viewPosition(currentView);
+
+    if (!options.skipToFacet) {
+      // Correct for bouncing between matching text and facet arrays.
+      if (currentView.type == 'text'  && direction > 0) direction -= 1;
+      if (currentView.type == 'facet' && direction < 0) direction += 1;
+    } else if (options.skipToFacet && currentView.type == 'text' &&
+               viewCount == viewPosition && direction >= 0) {
+      // Special case of looping around to a facet from the last search input box.
+      return false;
+    }
+    var view, next = Math.min(viewCount, viewPosition + direction);
+
+    if (currentView.type == 'text') {
+      if (next >= 0 && next < viewCount) {
+        view = this.facetViews[next];
+      } else if (next == viewCount) {
+        view = this.inputViews[this.inputViews.length-1];
+      }
+      if (view && options.selectFacet && view.type == 'facet') {
+        view.selectFacet();
+      } else if (view) {
+        view.enableEdit();
+        view.setCursorAtEnd(direction || options.startAtEnd);
+      }
+    } else if (currentView.type == 'facet') {
+      if (options.skipToFacet) {
+        if (next >= viewCount || next < 0) {
+          view = _.last(this.inputViews);
+          view.enableEdit();
+        } else {
+          view = this.facetViews[next];
+          view.enableEdit();
+          view.setCursorAtEnd(direction || options.startAtEnd);
+        }
+      } else {
+        view = this.inputViews[next];
+        view.enableEdit();
+      }
+    }
+    if (options.selectText) view.selectText();
+    this.resizeFacets();
+    
+    return true;
+  },
+
+  maybeFocusSearch : function(e) {
+    if ($(e.target).is('.VS-search-box') ||
+        $(e.target).is('.VS-search-inner') ||
+        e.type == 'keydown') {
+      this.focusSearch(e);
+    }
+  },
+
+  // Bring focus to last input field.
+  focusSearch : function(e, selectText) {
+    var view = this.inputViews[this.inputViews.length-1];
+    view.enableEdit(selectText);
+    if (!selectText) view.setCursorAtEnd(-1);
+    if (e.type == 'keydown') {
+      view.keydown(e);
+      view.box.trigger('keydown');
+    }
+    _.defer(_.bind(function() {
+      if (!this.$('input:focus').length) {
+        view.enableEdit(selectText);
+      }
+    }, this));
+  },
+
+  // Double-clicking on the search wrapper should select the existing text in
+  // the last search input. Also start the triple-click timer.
+  highlightSearch : function(e) {
+    if ($(e.target).is('.VS-search-box') ||
+        $(e.target).is('.VS-search-inner') ||
+        e.type == 'keydown') {
+      var lastinput = this.inputViews[this.inputViews.length-1];
+      lastinput.startTripleClickTimer();
+      this.focusSearch(e, true);
+    }
+  },
+
+  maybeTripleClick : function(e) {
+    var lastinput = this.inputViews[this.inputViews.length-1];
+    return lastinput.maybeTripleClick(e);
+  },
+
+  // Used to show the user is focused on some input inside the search box.
+  addFocus : function() {
+    this.app.options.callbacks.focus();
+    this.$('.VS-search-box').addClass('VS-focus');
+  },
+
+  // User is no longer focused on anything in the search box.
+  removeFocus : function() {
+    this.app.options.callbacks.blur();
+    var focus = _.any(this.facetViews.concat(this.inputViews), function(view) {
+      return view.isFocused();
+    });
+    if (!focus) this.$('.VS-search-box').removeClass('VS-focus');
+  },
+
+  // Show a menu which adds pre-defined facets to the search box. This is unused for now.
+  showFacetCategoryMenu : function(e) {
+    e.preventDefault();
+    e.stopPropagation();
+    if (this.facetCategoryMenu && this.facetCategoryMenu.modes.open == 'is') {
+      return this.facetCategoryMenu.close();
+    }
+
+    var items = [
+      {title: 'Account', onClick: _.bind(this.addFacet, this, 'account', '')},
+      {title: 'Project', onClick: _.bind(this.addFacet, this, 'project', '')},
+      {title: 'Filter', onClick: _.bind(this.addFacet, this, 'filter', '')},
+      {title: 'Access', onClick: _.bind(this.addFacet, this, 'access', '')}
+    ];
+
+    var menu = this.facetCategoryMenu || (this.facetCategoryMenu = new dc.ui.Menu({
+      items       : items,
+      standalone  : true
+    }));
+
+    this.$('.VS-icon-search').after(menu.render().open().content);
+    return false;
+  }
+
+});
+
+})();
+
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// This is the visual search facet that holds the category and its autocompleted
+// input field.
+VS.ui.SearchFacet = Backbone.View.extend({
+
+  type : 'facet',
+
+  className : 'search_facet',
+
+  events : {
+    'click .category'           : 'selectFacet',
+    'keydown input'             : 'keydown',
+    'mousedown input'           : 'enableEdit',
+    'mouseover .VS-icon-cancel' : 'showDelete',
+    'mouseout .VS-icon-cancel'  : 'hideDelete',
+    'click .VS-icon-cancel'     : 'remove'
+  },
+
+  initialize : function(options) {
+    this.flags = {
+      canClose : false
+    };
+    _.bindAll(this, 'set', 'keydown', 'deselectFacet', 'deferDisableEdit');
+  },
+
+  // Rendering the facet sets up autocompletion, events on blur, and populates
+  // the facet's input with its starting value.
+  render : function() {
+    $(this.el).html(JST['search_facet']({
+      model : this.model
+    }));
+
+    this.setMode('not', 'editing');
+    this.setMode('not', 'selected');
+    this.box = this.$('input');
+    this.box.val(this.model.label());
+    this.box.bind('blur', this.deferDisableEdit);
+    // Handle paste events with `propertychange`
+    this.box.bind('input propertychange', this.keydown);
+    this.setupAutocomplete();
+
+    return this;
+  },
+
+  // This method is used to setup the facet's input to auto-grow.
+  // This is defered in the searchBox so it can be attached to the
+  // DOM to get the correct font-size.
+  calculateSize : function() {
+    this.box.autoGrowInput();
+    this.box.unbind('updated.autogrow');
+    this.box.bind('updated.autogrow', _.bind(this.moveAutocomplete, this));
+  },
+
+  // Forces a recalculation of this facet's input field's value. Called when
+  // the facet is focused, removed, or otherwise modified.
+  resize : function(e) {
+    this.box.trigger('resize.autogrow', e);
+  },
+
+  // Watches the facet's input field to see if it matches the beginnings of
+  // words in `autocompleteValues`, which is different for every category.
+  // If the value, when selected from the autocompletion menu, is different
+  // than what it was, commit the facet and search for it.
+  setupAutocomplete : function() {
+    this.box.autocomplete({
+      source    : _.bind(this.autocompleteValues, this),
+      minLength : 0,
+      delay     : 0,
+      autoFocus : true,
+      position  : {offset : "0 5"},
+      create    : _.bind(function(e, ui) {
+        $(this.el).find('.ui-autocomplete-input').css('z-index','auto');
+      }, this),
+      select    : _.bind(function(e, ui) {
+        e.preventDefault();
+        var originalValue = this.model.get('value');
+        this.set(ui.item.value);
+        if (originalValue != ui.item.value || this.box.val() != ui.item.value) {
+          if (this.options.app.options.autosearch) {
+            this.search(e);
+          } else {
+              this.options.app.searchBox.renderFacets();
+              this.options.app.searchBox.focusNextFacet(this, 1, {viewPosition: this.options.order});
+          }
+        }
+        return false;
+      }, this),
+      open      : _.bind(function(e, ui) {
+        var box = this.box;
+        this.box.autocomplete('widget').find('.ui-menu-item').each(function() {
+          var $value = $(this),
+              autoCompleteData = $value.data('item.autocomplete') || $value.data('ui-autocomplete-item');
+
+          if (autoCompleteData['value'] == box.val() && box.data('uiAutocomplete').menu.activate) {
+            box.data('uiAutocomplete').menu.activate(new $.Event("mouseover"), $value);
+          }
+        });
+      }, this)
+    });
+
+    this.box.autocomplete('widget').addClass('VS-interface');
+  },
+
+  // As the facet's input field grows, it may move to the next line in the
+  // search box. `autoGrowInput` triggers an `updated` event on the input
+  // field, which is bound to this method to move the autocomplete menu.
+  moveAutocomplete : function() {
+    var autocomplete = this.box.data('uiAutocomplete');
+    if (autocomplete) {
+      autocomplete.menu.element.position({
+        my        : "left top",
+        at        : "left bottom",
+        of        : this.box.data('uiAutocomplete').element,
+        collision : "flip",
+        offset    : "0 5"
+      });
+    }
+  },
+
+  // When a user enters a facet and it is being edited, immediately show
+  // the autocomplete menu and size it to match the contents.
+  searchAutocomplete : function(e) {
+    var autocomplete = this.box.data('uiAutocomplete');
+    if (autocomplete) {
+      var menu = autocomplete.menu.element;
+      autocomplete.search();
+
+      // Resize the menu based on the correctly measured width of what's bigger:
+      // the menu's original size or the menu items' new size.
+      menu.outerWidth(Math.max(
+        menu.width('').outerWidth(),
+        autocomplete.element.outerWidth()
+      ));
+    }
+  },
+
+  // Closes the autocomplete menu. Called on disabling, selecting, deselecting,
+  // and anything else that takes focus out of the facet's input field.
+  closeAutocomplete : function() {
+    var autocomplete = this.box.data('uiAutocomplete');
+    if (autocomplete) autocomplete.close();
+  },
+
+  // Search terms used in the autocomplete menu. These are specific to the facet,
+  // and only match for the facet's category. The values are then matched on the
+  // first letter of any word in matches, and finally sorted according to the
+  // value's own category. You can pass `preserveOrder` as an option in the 
+  // `facetMatches` callback to skip any further ordering done client-side.
+  autocompleteValues : function(req, resp) {
+    var category = this.model.get('category');
+    var value    = this.model.get('value');
+    var searchTerm = req.term;
+
+    this.options.app.options.callbacks.valueMatches(category, searchTerm, function(matches, options) {
+      options = options || {};
+      matches = matches || [];
+      
+      if (searchTerm && value != searchTerm) {
+        if (options.preserveMatches) {
+          resp(matches);
+        } else {
+          var re = VS.utils.inflector.escapeRegExp(searchTerm || '');
+          var matcher = new RegExp('\\b' + re, 'i');
+          matches = $.grep(matches, function(item) {
+            return matcher.test(item) ||
+                   matcher.test(item.value) ||
+                   matcher.test(item.label);
+        });
+        }
+      }
+      
+      if (options.preserveOrder) {
+        resp(matches);
+      } else {
+        resp(_.sortBy(matches, function(match) {
+          if (match == value || match.value == value) return '';
+          else return match;
+        }));
+      }
+    });
+
+  },
+
+  // Sets the facet's model's value.
+  set : function(value) {
+    if (!value) return;
+    this.model.set({'value': value});
+  },
+
+  // Before the searchBox performs a search, we need to close the
+  // autocomplete menu.
+  search : function(e, direction) {
+    if (!direction) direction = 1;
+    this.closeAutocomplete();
+    this.options.app.searchBox.searchEvent(e);
+    _.defer(_.bind(function() {
+      this.options.app.searchBox.focusNextFacet(this, direction, {viewPosition: this.options.order});
+    }, this));
+  },
+
+  // Begin editing the facet's input. This is called when the user enters
+  // the input either from another facet or directly clicking on it.
+  //
+  // This method tells all other facets and inputs to disable so it can have
+  // the sole focus. It also prepares the autocompletion menu.
+  enableEdit : function() {
+    if (this.modes.editing != 'is') {
+      this.setMode('is', 'editing');
+      this.deselectFacet();
+      if (this.box.val() == '') {
+        this.box.val(this.model.get('value'));
+      }
+    }
+
+    this.flags.canClose = false;
+    this.options.app.searchBox.disableFacets(this);
+    this.options.app.searchBox.addFocus();
+    _.defer(_.bind(function() {
+      this.options.app.searchBox.addFocus();
+    }, this));
+    this.resize();
+    this.searchAutocomplete();
+    this.box.focus();
+  },
+
+  // When the user blurs the input, they may either be going to another input
+  // or off the search box entirely. If they go to another input, this facet
+  // will be instantly disabled, and the canClose flag will be turned back off.
+  //
+  // However, if the user clicks elsewhere on the page, this method starts a timer
+  // that checks if any of the other inputs are selected or are being edited. If
+  // not, then it can finally close itself and its autocomplete menu.
+  deferDisableEdit : function() {
+    this.flags.canClose = true;
+    _.delay(_.bind(function() {
+      if (this.flags.canClose && !this.box.is(':focus') &&
+          this.modes.editing == 'is' && this.modes.selected != 'is') {
+        this.disableEdit();
+      }
+    }, this), 250);
+  },
+
+  // Called either by other facets receiving focus or by the timer in `deferDisableEdit`,
+  // this method will turn off the facet, remove any text selection, and close
+  // the autocomplete menu.
+  disableEdit : function() {
+    var newFacetQuery = VS.utils.inflector.trim(this.box.val());
+    if (newFacetQuery != this.model.get('value')) {
+      this.set(newFacetQuery);
+    }
+    this.flags.canClose = false;
+    this.box.selectRange(0, 0);
+    this.box.blur();
+    this.setMode('not', 'editing');
+    this.closeAutocomplete();
+    this.options.app.searchBox.removeFocus();
+  },
+
+  // Selects the facet, which blurs the facet's input and highlights the facet.
+  // If this is the only facet being selected (and not part of a select all event),
+  // we attach a mouse/keyboard watcher to check if the next action by the user
+  // should delete this facet or just deselect it.
+  selectFacet : function(e) {
+    if (e) e.preventDefault();
+    var allSelected = this.options.app.searchBox.allSelected();
+    if (this.modes.selected == 'is') return;
+
+    if (this.box.is(':focus')) {
+      this.box.setCursorPosition(0);
+      this.box.blur();
+    }
+
+    this.flags.canClose = false;
+    this.closeAutocomplete();
+    this.setMode('is', 'selected');
+    this.setMode('not', 'editing');
+    if (!allSelected || e) {
+      $(document).unbind('keydown.facet', this.keydown);
+      $(document).unbind('click.facet', this.deselectFacet);
+      _.defer(_.bind(function() {
+        $(document).unbind('keydown.facet').bind('keydown.facet', this.keydown);
+        $(document).unbind('click.facet').one('click.facet', this.deselectFacet);
+      }, this));
+      this.options.app.searchBox.disableFacets(this);
+      this.options.app.searchBox.addFocus();
+    }
+    return false;
+  },
+
+  // Turns off highlighting on the facet. Called in a variety of ways, this
+  // only deselects the facet if it is selected, and then cleans up the
+  // keyboard/mouse watchers that were created when the facet was first
+  // selected.
+  deselectFacet : function(e) {
+    if (e) e.preventDefault();
+    if (this.modes.selected == 'is') {
+      this.setMode('not', 'selected');
+      this.closeAutocomplete();
+      this.options.app.searchBox.removeFocus();
+    }
+    $(document).unbind('keydown.facet', this.keydown);
+    $(document).unbind('click.facet', this.deselectFacet);
+    return false;
+  },
+
+  // Is the user currently focused in this facet's input field?
+  isFocused : function() {
+    return this.box.is(':focus');
+  },
+
+  // Hovering over the delete button styles the facet so the user knows that
+  // the delete button will kill the entire facet.
+  showDelete : function() {
+    $(this.el).addClass('search_facet_maybe_delete');
+  },
+
+  // On `mouseout`, the user is no longer hovering on the delete button.
+  hideDelete : function() {
+    $(this.el).removeClass('search_facet_maybe_delete');
+  },
+
+  // When switching between facets, depending on the direction the cursor is
+  // coming from, the cursor in this facet's input field should match the original
+  // direction.
+  setCursorAtEnd : function(direction) {
+    if (direction == -1) {
+      this.box.setCursorPosition(this.box.val().length);
+    } else {
+      this.box.setCursorPosition(0);
+    }
+  },
+
+  // Deletes the facet and sends the cursor over to the nearest input field.
+  remove : function(e) {
+    var committed = this.model.get('value');
+    this.deselectFacet();
+    this.disableEdit();
+    this.options.app.searchQuery.remove(this.model);
+    if (committed && this.options.app.options.autosearch) {
+      this.search(e, -1);
+    } else {
+      this.options.app.searchBox.renderFacets();
+      this.options.app.searchBox.focusNextFacet(this, -1, {viewPosition: this.options.order});
+    }
+  },
+
+  // Selects the text in the facet's input field. When the user tabs between
+  // facets, convention is to highlight the entire field.
+  selectText: function() {
+    this.box.selectRange(0, this.box.val().length);
+  },
+
+  // Handles all keyboard inputs when in the facet's input field. This checks
+  // for movement between facets and inputs, entering a new value that needs
+  // to be autocompleted, as well as the removal of this facet.
+  keydown : function(e) {
+    var key = VS.app.hotkeys.key(e);
+
+    if (key == 'enter' && this.box.val()) {
+      this.disableEdit();
+      this.search(e);
+    } else if (key == 'left') {
+      if (this.modes.selected == 'is') {
+        this.deselectFacet();
+        this.options.app.searchBox.focusNextFacet(this, -1, {startAtEnd: -1});
+      } else if (this.box.getCursorPosition() == 0 && !this.box.getSelection().length) {
+        this.selectFacet();
+      }
+    } else if (key == 'right') {
+      if (this.modes.selected == 'is') {
+        e.preventDefault();
+        this.deselectFacet();
+        this.setCursorAtEnd(0);
+        this.enableEdit();
+      } else if (this.box.getCursorPosition() == this.box.val().length) {
+        e.preventDefault();
+        this.disableEdit();
+        this.options.app.searchBox.focusNextFacet(this, 1);
+      }
+    } else if (VS.app.hotkeys.shift && key == 'tab') {
+      e.preventDefault();
+      this.options.app.searchBox.focusNextFacet(this, -1, {
+        startAtEnd  : -1,
+        skipToFacet : true,
+        selectText  : true
+      });
+    } else if (key == 'tab') {
+      e.preventDefault();
+      this.options.app.searchBox.focusNextFacet(this, 1, {
+        skipToFacet : true,
+        selectText  : true
+      });
+    } else if (VS.app.hotkeys.command && (e.which == 97 || e.which == 65)) {
+      e.preventDefault();
+      this.options.app.searchBox.selectAllFacets();
+      return false;
+    } else if (VS.app.hotkeys.printable(e) && this.modes.selected == 'is') {
+      this.options.app.searchBox.focusNextFacet(this, -1, {startAtEnd: -1});
+      this.remove(e);
+    } else if (key == 'backspace') {
+      if (this.modes.selected == 'is') {
+        e.preventDefault();
+        this.remove(e);
+      } else if (this.box.getCursorPosition() == 0 &&
+                 !this.box.getSelection().length) {
+        e.preventDefault();
+        this.selectFacet();
+      }
+    }
+
+    // Handle paste events
+    if (e.which == null) {
+        // this.searchAutocomplete(e);
+        _.defer(_.bind(this.resize, this, e));
+    } else {
+      this.resize(e);
+    }
+  }
+
+});
+
+})();
+
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// This is the visual search input that is responsible for creating new facets.
+// There is one input placed in between all facets.
+VS.ui.SearchInput = Backbone.View.extend({
+
+  type : 'text',
+
+  className : 'search_input ui-menu',
+
+  events : {
+    'keypress input'  : 'keypress',
+    'keydown input'   : 'keydown',
+    'click input'     : 'maybeTripleClick',
+    'dblclick input'  : 'startTripleClickTimer'
+  },
+
+  initialize : function() {
+    this.app = this.options.app;
+    this.flags = {
+      canClose : false
+    };
+    _.bindAll(this, 'removeFocus', 'addFocus', 'moveAutocomplete', 'deferDisableEdit');
+  },
+
+  // Rendering the input sets up autocomplete, events on focusing and blurring
+  // the input, and the auto-grow of the input.
+  render : function() {
+    $(this.el).html(JST['search_input']({}));
+
+    this.setMode('not', 'editing');
+    this.setMode('not', 'selected');
+    this.box = this.$('input');
+    this.box.autoGrowInput();
+    this.box.bind('updated.autogrow', this.moveAutocomplete);
+    this.box.bind('blur',  this.deferDisableEdit);
+    this.box.bind('focus', this.addFocus);
+    this.setupAutocomplete();
+
+    return this;
+  },
+
+  // Watches the input and presents an autocompleted menu, taking the
+  // remainder of the input field and adding a separate facet for it.
+  //
+  // See `addTextFacetRemainder` for explanation on how the remainder works.
+  setupAutocomplete : function() {
+    this.box.autocomplete({
+      minLength : this.options.showFacets ? 0 : 1,
+      delay     : 50,
+      autoFocus : true,
+      position  : {offset : "0 -1"},
+      source    : _.bind(this.autocompleteValues, this),
+      create    : _.bind(function(e, ui) {
+        $(this.el).find('.ui-autocomplete-input').css('z-index','auto');
+      }, this),
+      select    : _.bind(function(e, ui) {
+        e.preventDefault();
+        // stopPropogation does weird things in jquery-ui 1.9
+        // e.stopPropagation();
+        var remainder = this.addTextFacetRemainder(ui.item.value);
+        var position  = this.options.position + (remainder ? 1 : 0);
+        this.app.searchBox.addFacet(ui.item instanceof String ? ui.item : ui.item.value, '', position);
+        return false;
+      }, this)
+    });
+
+    // Renders the results grouped by the categories they belong to.
+    this.box.data('uiAutocomplete')._renderMenu = function(ul, items) {
+      var category = '';
+      _.each(items, _.bind(function(item, i) {
+        if (item.category && item.category != category) {
+          ul.append('<li class="ui-autocomplete-category">'+item.category+'</li>');
+          category = item.category;
+        }
+        
+        if(this._renderItemData) {
+          this._renderItemData(ul, item);
+        } else {
+          this._renderItem(ul, item);
+        }
+        
+      }, this));
+    };
+
+    this.box.autocomplete('widget').addClass('VS-interface');
+  },
+
+  // Search terms used in the autocomplete menu. The values are matched on the
+  // first letter of any word in matches, and finally sorted according to the
+  // value's own category. You can pass `preserveOrder` as an option in the
+  // `facetMatches` callback to skip any further ordering done client-side.
+  autocompleteValues : function(req, resp) {
+    var searchTerm = req.term;
+    var lastWord   = searchTerm.match(/\w+\*?$/); // Autocomplete only last word.
+    var re         = VS.utils.inflector.escapeRegExp(lastWord && lastWord[0] || '');
+    this.app.options.callbacks.facetMatches(function(prefixes, options) {
+      options = options || {};
+      prefixes = prefixes || [];
+
+      // Only match from the beginning of the word.
+      var matcher    = new RegExp('^' + re, 'i');
+      var matches    = $.grep(prefixes, function(item) {
+        return item && matcher.test(item.label || item);
+      });
+
+      if (options.preserveOrder) {
+        resp(matches);
+      } else {
+        resp(_.sortBy(matches, function(match) {
+          if (match.label) return match.category + '-' + match.label;
+          else             return match;
+        }));
+      }
+    });
+
+  },
+
+  // Closes the autocomplete menu. Called on disabling, selecting, deselecting,
+  // and anything else that takes focus out of the facet's input field.
+  closeAutocomplete : function() {
+    var autocomplete = this.box.data('uiAutocomplete');
+    if (autocomplete) autocomplete.close();
+  },
+
+  // As the input field grows, it may move to the next line in the
+  // search box. `autoGrowInput` triggers an `updated` event on the input
+  // field, which is bound to this method to move the autocomplete menu.
+  moveAutocomplete : function() {
+    var autocomplete = this.box.data('uiAutocomplete');
+    if (autocomplete) {
+      autocomplete.menu.element.position({
+        my        : "left top",
+        at        : "left bottom",
+        of        : this.box.data('uiAutocomplete').element,
+        collision : "none",
+        offset    : '0 -1'
+      });
+    }
+  },
+
+  // When a user enters a facet and it is being edited, immediately show
+  // the autocomplete menu and size it to match the contents.
+  searchAutocomplete : function(e) {
+    var autocomplete = this.box.data('uiAutocomplete');
+    if (autocomplete) {
+      var menu = autocomplete.menu.element;
+      autocomplete.search();
+
+      // Resize the menu based on the correctly measured width of what's bigger:
+      // the menu's original size or the menu items' new size.
+      menu.outerWidth(Math.max(
+        menu.width('').outerWidth(),
+        autocomplete.element.outerWidth()
+      ));
+    }
+  },
+
+  // If a user searches for "word word category", the category would be
+  // matched and autocompleted, and when selected, the "word word" would
+  // also be caught as the remainder and then added in its own facet.
+  addTextFacetRemainder : function(facetValue) {
+    var boxValue = this.box.val();
+    var lastWord = boxValue.match(/\b(\w+)$/);
+    
+    if (!lastWord) {
+      return '';
+    }
+
+    var matcher = new RegExp(lastWord[0], "i");
+    if (facetValue.search(matcher) == 0) {
+      boxValue = boxValue.replace(/\b(\w+)$/, '');
+    }
+    boxValue = boxValue.replace('^\s+|\s+$', '');
+    
+    if (boxValue) {
+      this.app.searchBox.addFacet(this.app.options.remainder, boxValue, this.options.position);
+    }
+    
+    return boxValue;
+  },
+
+  // Directly called to focus the input. This is different from `addFocus`
+  // because this is not called by a focus event. This instead calls a
+  // focus event causing the input to become focused.
+  enableEdit : function(selectText) {
+    this.addFocus();
+    if (selectText) {
+      this.selectText();
+    }
+    this.box.focus();
+  },
+
+  // Event called on user focus on the input. Tells all other input and facets
+  // to give up focus, and starts revving the autocomplete.
+  addFocus : function() {
+    this.flags.canClose = false;
+    if (!this.app.searchBox.allSelected()) {
+      this.app.searchBox.disableFacets(this);
+    }
+    this.app.searchBox.addFocus();
+    this.setMode('is', 'editing');
+    this.setMode('not', 'selected');
+    if (!this.app.searchBox.allSelected()) {
+        this.searchAutocomplete();
+    }
+  },
+
+  // Directly called to blur the input. This is different from `removeFocus`
+  // because this is not called by a blur event.
+  disableEdit : function() {
+    this.box.blur();
+    this.removeFocus();
+  },
+
+  // Event called when user blur's the input, either through the keyboard tabbing
+  // away or the mouse clicking off. Cleans up
+  removeFocus : function() {
+    this.flags.canClose = false;
+    this.app.searchBox.removeFocus();
+    this.setMode('not', 'editing');
+    this.setMode('not', 'selected');
+    this.closeAutocomplete();
+  },
+
+  // When the user blurs the input, they may either be going to another input
+  // or off the search box entirely. If they go to another input, this facet
+  // will be instantly disabled, and the canClose flag will be turned back off.
+  //
+  // However, if the user clicks elsewhere on the page, this method starts a timer
+  // that checks if any of the other inputs are selected or are being edited. If
+  // not, then it can finally close itself and its autocomplete menu.
+  deferDisableEdit : function() {
+    this.flags.canClose = true;
+    _.delay(_.bind(function() {
+      if (this.flags.canClose &&
+          !this.box.is(':focus') &&
+          this.modes.editing == 'is') {
+        this.disableEdit();
+      }
+    }, this), 250);
+  },
+
+  // Starts a timer that will cause a triple-click, which highlights all facets.
+  startTripleClickTimer : function() {
+    this.tripleClickTimer = setTimeout(_.bind(function() {
+      this.tripleClickTimer = null;
+    }, this), 500);
+  },
+
+  // Event on click that checks if a triple click is in play. The
+  // `tripleClickTimer` is counting down, ready to be engaged and intercept
+  // the click event to force a select all instead.
+  maybeTripleClick : function(e) {
+    if (!!this.tripleClickTimer) {
+      e.preventDefault();
+      this.app.searchBox.selectAllFacets();
+      return false;
+    }
+  },
+
+  // Is the user currently focused in the input field?
+  isFocused : function() {
+    return this.box.is(':focus');
+  },
+
+  // When serializing the facets, the inputs need to also have their values represented,
+  // in case they contain text that is not yet faceted (but will be once the search is
+  // completed).
+  value : function() {
+    return this.box.val();
+  },
+
+  // When switching between facets and inputs, depending on the direction the cursor
+  // is coming from, the cursor in this facet's input field should match the original
+  // direction.
+  setCursorAtEnd : function(direction) {
+    if (direction == -1) {
+      this.box.setCursorPosition(this.box.val().length);
+    } else {
+      this.box.setCursorPosition(0);
+    }
+  },
+
+  // Selects the entire range of text in the input. Useful when tabbing between inputs
+  // and facets.
+  selectText : function() {
+    this.box.selectRange(0, this.box.val().length);
+    if (!this.app.searchBox.allSelected()) {
+      this.box.focus();
+    } else {
+      this.setMode('is', 'selected');
+    }
+  },
+
+  // Before the searchBox performs a search, we need to close the
+  // autocomplete menu.
+  search : function(e, direction) {
+    if (!direction) direction = 0;
+    this.closeAutocomplete();
+    this.app.searchBox.searchEvent(e);
+    _.defer(_.bind(function() {
+      this.app.searchBox.focusNextFacet(this, direction);
+    }, this));
+  },
+
+  // Callback fired on key press in the search box. We search when they hit return.
+  keypress : function(e) {
+    var key = VS.app.hotkeys.key(e);
+
+    if (key == 'enter') {
+      return this.search(e, 100);
+    } else if (VS.app.hotkeys.colon(e)) {
+      this.box.trigger('resize.autogrow', e);
+      var query    = this.box.val();
+      var prefixes = [];
+      if (this.app.options.callbacks.facetMatches) {
+          this.app.options.callbacks.facetMatches(function(p) {
+              prefixes = p;
+          });
+      }
+      var labels   = _.map(prefixes, function(prefix) {
+        if (prefix.label) return prefix.label;
+        else              return prefix;
+      });
+      if (_.contains(labels, query)) {
+        e.preventDefault();
+        var remainder = this.addTextFacetRemainder(query);
+        var position  = this.options.position + (remainder?1:0);
+        this.app.searchBox.addFacet(query, '', position);
+        return false;
+      }
+    } else if (key == 'backspace') {
+      if (this.box.getCursorPosition() == 0 && !this.box.getSelection().length) {
+        e.preventDefault();
+        e.stopPropagation();
+        e.stopImmediatePropagation();
+        this.app.searchBox.resizeFacets();
+        return false;
+      }
+    }
+  },
+
+  // Handles all keyboard inputs when in the input field. This checks
+  // for movement between facets and inputs, entering a new value that needs
+  // to be autocompleted, as well as stepping between facets with backspace.
+  keydown : function(e) {
+    var key = VS.app.hotkeys.key(e);
+
+    if (key == 'left') {
+      if (this.box.getCursorPosition() == 0) {
+        e.preventDefault();
+        this.app.searchBox.focusNextFacet(this, -1, {startAtEnd: -1});
+      }
+    } else if (key == 'right') {
+      if (this.box.getCursorPosition() == this.box.val().length) {
+        e.preventDefault();
+        this.app.searchBox.focusNextFacet(this, 1, {selectFacet: true});
+      }
+    } else if (VS.app.hotkeys.shift && key == 'tab') {
+      e.preventDefault();
+      this.app.searchBox.focusNextFacet(this, -1, {selectText: true});
+    } else if (key == 'tab') {
+      var value = this.box.val();
+      if (value.length) {
+        e.preventDefault();
+        var remainder = this.addTextFacetRemainder(value);
+        var position  = this.options.position + (remainder?1:0);
+        if (value != remainder) {
+            this.app.searchBox.addFacet(value, '', position);
+        }
+      } else {
+        var foundFacet = this.app.searchBox.focusNextFacet(this, 0, {
+          skipToFacet: true,
+          selectText: true
+        });
+        if (foundFacet) {
+          e.preventDefault();
+        }
+      }
+    } else if (VS.app.hotkeys.command &&
+               String.fromCharCode(e.which).toLowerCase() == 'a') {
+      e.preventDefault();
+      this.app.searchBox.selectAllFacets();
+      return false;
+    } else if (key == 'backspace' && !this.app.searchBox.allSelected()) {
+      if (this.box.getCursorPosition() == 0 && !this.box.getSelection().length) {
+        e.preventDefault();
+        this.app.searchBox.focusNextFacet(this, -1, {backspace: true});
+        return false;
+      }
+    } else if (key == 'end') {
+      var view = this.app.searchBox.inputViews[this.app.searchBox.inputViews.length-1];
+      view.setCursorAtEnd(-1);
+    } else if (key == 'home') {
+      var view = this.app.searchBox.inputViews[0];
+      view.setCursorAtEnd(-1);
+    }
+
+    this.box.trigger('resize.autogrow', e);
+  }
+
+});
+
+})();
+
+(function(){
+
+  var $ = jQuery; // Handle namespaced jQuery
+
+  // Makes the view enter a mode. Modes have both a 'mode' and a 'group',
+  // and are mutually exclusive with any other modes in the same group.
+  // Setting will update the view's modes hash, as well as set an HTML class
+  // of *[mode]_[group]* on the view's element. Convenient way to swap styles
+  // and behavior.
+  Backbone.View.prototype.setMode = function(mode, group) {
+    this.modes || (this.modes = {});
+    if (this.modes[group] === mode) return;
+    $(this.el).setMode(mode, group);
+    this.modes[group] = mode;
+  };
+
+})();
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// DocumentCloud workspace hotkeys. To tell if a key is currently being pressed,
+// just ask `VS.app.hotkeys.[key]` on `keypress`, or ask `VS.app.hotkeys.key(e)`
+// on `keydown`.
+//
+// For the most headache-free way to use this utility, check modifier keys,
+// like shift and command, with `VS.app.hotkeys.shift`, and check every other
+// key with `VS.app.hotkeys.key(e) == 'key_name'`.
+VS.app.hotkeys = {
+
+  // Keys that will be mapped to the `hotkeys` namespace.
+  KEYS: {
+    '16':  'shift',
+    '17':  'command',
+    '91':  'command',
+    '93':  'command',
+    '224': 'command',
+    '13':  'enter',
+    '37':  'left',
+    '38':  'upArrow',
+    '39':  'right',
+    '40':  'downArrow',
+    '46':  'delete',
+    '8':   'backspace',
+    '35':  'end',
+    '36':  'home',
+    '9':   'tab',
+    '188': 'comma'
+  },
+
+  // Binds global keydown and keyup events to listen for keys that match `this.KEYS`.
+  initialize : function() {
+    _.bindAll(this, 'down', 'up', 'blur');
+    $(document).bind('keydown', this.down);
+    $(document).bind('keyup', this.up);
+    $(window).bind('blur', this.blur);
+  },
+
+  // On `keydown`, turn on all keys that match.
+  down : function(e) {
+    var key = this.KEYS[e.which];
+    if (key) this[key] = true;
+  },
+
+  // On `keyup`, turn off all keys that match.
+  up : function(e) {
+    var key = this.KEYS[e.which];
+    if (key) this[key] = false;
+  },
+
+  // If an input is blurred, all keys need to be turned off, since they are no longer
+  // able to modify the document.
+  blur : function(e) {
+    for (var key in this.KEYS) this[this.KEYS[key]] = false;
+  },
+
+  // Check a key from an event and return the common english name.
+  key : function(e) {
+    return this.KEYS[e.which];
+  },
+
+  // Colon is special, since the value is different between browsers.
+  colon : function(e) {
+    var charCode = e.which;
+    return charCode && String.fromCharCode(charCode) == ":";
+  },
+
+  // Check a key from an event and match it against any known characters.
+  // The `keyCode` is different depending on the event type: `keydown` vs. `keypress`.
+  //
+  // These were determined by looping through every `keyCode` and `charCode` that
+  // resulted from `keydown` and `keypress` events and counting what was printable.
+  printable : function(e) {
+    var code = e.which;
+    if (e.type == 'keydown') {
+      if (code == 32 ||                      // space
+          (code >= 48 && code <= 90) ||      // 0-1a-z
+          (code >= 96 && code <= 111) ||     // 0-9+-/*.
+          (code >= 186 && code <= 192) ||    // ;=,-./^
+          (code >= 219 && code <= 222)) {    // (\)'
+        return true;
+      }
+    } else {
+      // [space]!"#$%&'()*+,-.0-9:;<=>?@A-Z[\]^_`a-z{|} and unicode characters
+      if ((code >= 32 && code <= 126)  ||
+          (code >= 160 && code <= 500) ||
+          (String.fromCharCode(code) == ":")) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+};
+
+})();
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// Naive English transformations on words. Only used for a few transformations 
+// in VisualSearch.js.
+VS.utils.inflector = {
+
+  // Delegate to the ECMA5 String.prototype.trim function, if available.
+  trim : function(s) {
+    return s.trim ? s.trim() : s.replace(/^\s+|\s+$/g, '');
+  },
+  
+  // Escape strings that are going to be used in a regex. Escapes punctuation
+  // that would be incorrect in a regex.
+  escapeRegExp : function(s) {
+    return s.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1');
+  }
+};
+
+})();
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+$.fn.extend({
+
+  // Makes the selector enter a mode. Modes have both a 'mode' and a 'group',
+  // and are mutually exclusive with any other modes in the same group.
+  // Setting will update the view's modes hash, as well as set an HTML class
+  // of *[mode]_[group]* on the view's element. Convenient way to swap styles
+  // and behavior.
+  setMode : function(state, group) {
+    group    = group || 'mode';
+    var re   = new RegExp("\\w+_" + group + "(\\s|$)", 'g');
+    var mode = (state === null) ? "" : state + "_" + group;
+    this.each(function() {
+      this.className = (this.className.replace(re, '')+' '+mode)
+                       .replace(/\s\s/g, ' ');
+    });
+    return mode;
+  },
+
+  // When attached to an input element, this will cause the width of the input
+  // to match its contents. This calculates the width of the contents of the input
+  // by measuring a hidden shadow div that should match the styling of the input.
+  autoGrowInput: function() {
+    return this.each(function() {
+      var $input  = $(this);
+      var $tester = $('<div />').css({
+        opacity     : 0,
+        top         : -9999,
+        left        : -9999,
+        position    : 'absolute',
+        whiteSpace  : 'nowrap'
+      }).addClass('VS-input-width-tester').addClass('VS-interface');
+
+      // Watch for input value changes on all of these events. `resize`
+      // event is called explicitly when the input has been changed without
+      // a single keypress.
+      var events = 'keydown.autogrow keypress.autogrow ' +
+                   'resize.autogrow change.autogrow';
+      $input.next('.VS-input-width-tester').remove();
+      $input.after($tester);
+      $input.unbind(events).bind(events, function(e, realEvent) {
+        if (realEvent) e = realEvent;
+        var value = $input.val();
+
+        // Watching for the backspace key is tricky because it may not
+        // actually be deleting the character, but instead the key gets
+        // redirected to move the cursor from facet to facet.
+        if (VS.app.hotkeys.key(e) == 'backspace') {
+          var position = $input.getCursorPosition();
+          if (position > 0) value = value.slice(0, position-1) +
+                                    value.slice(position, value.length);
+        } else if (VS.app.hotkeys.printable(e) &&
+                   !VS.app.hotkeys.command) {
+          value += String.fromCharCode(e.which);
+        }
+        value = value.replace(/&/g, '&amp;')
+                     .replace(/\s/g,'&nbsp;')
+                     .replace(/</g, '&lt;')
+                     .replace(/>/g, '&gt;');
+
+        $tester.html(value);
+
+        $input.width($tester.width() + 3 + parseInt($input.css('min-width')));
+        $input.trigger('updated.autogrow');
+      });
+
+      // Sets the width of the input on initialization.
+      $input.trigger('resize.autogrow');
+    });
+  },
+
+
+  // Cross-browser method used for calculating where the cursor is in an
+  // input field.
+  getCursorPosition: function() {
+    var position = 0;
+    var input    = this.get(0);
+
+    if (document.selection) { // IE
+      input.focus();
+      var sel    = document.selection.createRange();
+      var selLen = document.selection.createRange().text.length;
+      sel.moveStart('character', -input.value.length);
+      position   = sel.text.length - selLen;
+    } else if (input && $(input).is(':visible') &&
+               input.selectionStart != null) { // Firefox/Safari
+      position = input.selectionStart;
+    }
+
+    return position;
+  },
+
+  // A simple proxy for `selectRange` that sets the cursor position in an
+  // input field.
+  setCursorPosition: function(position) {
+    return this.each(function() {
+      return $(this).selectRange(position, position);
+    });
+  },
+
+  // Cross-browser way to select text in an input field.
+  selectRange: function(start, end) {
+    return this.filter(':visible').each(function() {
+      if (this.setSelectionRange) { // FF/Webkit
+        this.focus();
+        this.setSelectionRange(start, end);
+      } else if (this.createTextRange) { // IE
+        var range = this.createTextRange();
+        range.collapse(true);
+        range.moveEnd('character', end);
+        range.moveStart('character', start);
+        if (end - start >= 0) range.select();
+      }
+    });
+  },
+
+  // Returns an object that contains the text selection range values for
+  // an input field.
+  getSelection: function() {
+    var input = this[0];
+
+    if (input.selectionStart != null) { // FF/Webkit
+      var start = input.selectionStart;
+      var end   = input.selectionEnd;
+      return {
+        start   : start,
+        end     : end,
+        length  : end-start,
+        text    : input.value.substr(start, end-start)
+      };
+    } else if (document.selection) { // IE
+      var range = document.selection.createRange();
+      if (range) {
+        var textRange = input.createTextRange();
+        var copyRange = textRange.duplicate();
+        textRange.moveToBookmark(range.getBookmark());
+        copyRange.setEndPoint('EndToStart', textRange);
+        var start = copyRange.text.length;
+        var end   = start + range.text.length;
+        return {
+          start   : start,
+          end     : end,
+          length  : end-start,
+          text    : range.text
+        };
+      }
+    }
+    return {start: 0, end: 0, length: 0};
+  }
+
+});
+
+// Debugging in Internet Explorer. This allows you to use 
+// `console.log(['message', var1, var2, ...])`. Just remove the `false` and
+// add your console.logs. This will automatically stringify objects using
+// `JSON.stringify', so you can read what's going out. Think of this as a
+// *Diet Firebug Lite Zero with Lemon*.
+if (false) {
+  window.console = {};
+  var _$ied;
+  window.console.log = function(msg) {
+    if (_.isArray(msg)) {
+      var message = msg[0];
+      var vars = _.map(msg.slice(1), function(arg) {
+        return JSON.stringify(arg);
+      }).join(' - ');
+    }
+    if(!_$ied){
+      _$ied = $('<div><ol></ol></div>').css({
+        'position': 'fixed',
+        'bottom': 10,
+        'left': 10,
+        'zIndex': 20000,
+        'width': $('body').width() - 80,
+        'border': '1px solid #000',
+        'padding': '10px',
+        'backgroundColor': '#fff',
+        'fontFamily': 'arial,helvetica,sans-serif',
+        'fontSize': '11px'
+      });
+      $('body').append(_$ied);
+    }
+    var $message = $('<li>'+message+' - '+vars+'</li>').css({
+      'borderBottom': '1px solid #999999'
+    });
+    _$ied.find('ol').append($message);
+    _.delay(function() {
+      $message.fadeOut(500);
+    }, 5000);
+  };
+
+}
+
+})();
+
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// Used to extract keywords and facets from the free text search.
+var QUOTES_RE   = "('[^']+'|\"[^\"]+\")";
+var FREETEXT_RE = "('[^']+'|\"[^\"]+\"|[^'\"\\s]\\S*)";
+var CATEGORY_RE = FREETEXT_RE +                     ':\\s*';
+VS.app.SearchParser = {
+
+  // Matches `category: "free text"`, with and without quotes.
+  ALL_FIELDS : new RegExp(CATEGORY_RE + FREETEXT_RE, 'g'),
+
+  // Matches a single category without the text. Used to correctly extract facets.
+  CATEGORY   : new RegExp(CATEGORY_RE),
+
+  // Called to parse a query into a collection of `SearchFacet` models.
+  parse : function(instance, query) {
+    var searchFacets = this._extractAllFacets(instance, query);
+    instance.searchQuery.reset(searchFacets);
+    return searchFacets;
+  },
+
+  // Walks the query and extracts facets, categories, and free text.
+  _extractAllFacets : function(instance, query) {
+    var facets = [];
+    var originalQuery = query;
+    while (query) {
+      var category, value;
+      originalQuery = query;
+      var field = this._extractNextField(query);
+      if (!field) {
+        category = instance.options.remainder;
+        value    = this._extractSearchText(query);
+        query    = VS.utils.inflector.trim(query.replace(value, ''));
+      } else if (field.indexOf(':') != -1) {
+        category = field.match(this.CATEGORY)[1].replace(/(^['"]|['"]$)/g, '');
+        value    = field.replace(this.CATEGORY, '').replace(/(^['"]|['"]$)/g, '');
+        query    = VS.utils.inflector.trim(query.replace(field, ''));
+      } else if (field.indexOf(':') == -1) {
+        category = instance.options.remainder;
+        value    = field;
+        query    = VS.utils.inflector.trim(query.replace(value, ''));
+      }
+
+      if (category && value) {
+          var searchFacet = new VS.model.SearchFacet({
+            category : category,
+            value    : VS.utils.inflector.trim(value),
+            app      : instance
+          });
+          facets.push(searchFacet);
+      }
+      if (originalQuery == query) break;
+    }
+
+    return facets;
+  },
+
+  // Extracts the first field found, capturing any free text that comes
+  // before the category.
+  _extractNextField : function(query) {
+    var textRe = new RegExp('^\\s*(\\S+)\\s+(?=' + QUOTES_RE + FREETEXT_RE + ')');
+    var textMatch = query.match(textRe);
+    if (textMatch && textMatch.length >= 1) {
+      return textMatch[1];
+    } else {
+      return this._extractFirstField(query);
+    }
+  },
+
+  // If there is no free text before the facet, extract the category and value.
+  _extractFirstField : function(query) {
+    var fields = query.match(this.ALL_FIELDS);
+    return fields && fields.length && fields[0];
+  },
+
+  // If the found match is not a category and facet, extract the trimmed free text.
+  _extractSearchText : function(query) {
+    query = query || '';
+    var text = VS.utils.inflector.trim(query.replace(this.ALL_FIELDS, ''));
+    return text;
+  }
+
+};
+
+})();
+
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// The model that holds individual search facets and their categories.
+// Held in a collection by `VS.app.searchQuery`.
+VS.model.SearchFacet = Backbone.Model.extend({
+
+  // Extract the category and value and serialize it in preparation for
+  // turning the entire searchBox into a search query that can be sent
+  // to the server for parsing and searching.
+  serialize : function() {
+    var category = this.quoteCategory(this.get('category'));
+    var value    = VS.utils.inflector.trim(this.get('value'));
+    var remainder = this.get("app").options.remainder;
+
+    if (!value) return '';
+
+    if (!_.contains(this.get("app").options.unquotable || [], category) && category != remainder) {
+      value = this.quoteValue(value);
+    }
+
+    if (category != remainder) {
+      category = category + ': ';
+    } else {
+      category = "";
+    }
+    return category + value;
+  },
+  
+  // Wrap categories that have spaces or any kind of quote with opposite matching
+  // quotes to preserve the complex category during serialization.
+  quoteCategory : function(category) {
+    var hasDoubleQuote = (/"/).test(category);
+    var hasSingleQuote = (/'/).test(category);
+    var hasSpace       = (/\s/).test(category);
+    
+    if (hasDoubleQuote && !hasSingleQuote) {
+      return "'" + category + "'";
+    } else if (hasSpace || (hasSingleQuote && !hasDoubleQuote)) {
+      return '"' + category + '"';
+    } else {
+      return category;
+    }
+  },
+  
+  // Wrap values that have quotes in opposite matching quotes. If a value has
+  // both single and double quotes, just use the double quotes.
+  quoteValue : function(value) {
+    var hasDoubleQuote = (/"/).test(value);
+    var hasSingleQuote = (/'/).test(value);
+    
+    if (hasDoubleQuote && !hasSingleQuote) {
+      return "'" + value + "'";
+    } else {
+      return '"' + value + '"';
+    }
+  },
+  
+  // If provided, use a custom label instead of the raw value.
+  label : function() {
+      return this.get('label') || this.get('value');
+  }
+
+});
+
+})();
+(function() {
+
+var $ = jQuery; // Handle namespaced jQuery
+
+// Collection which holds all of the individual facets (category: value).
+// Used for finding and removing specific facets.
+VS.model.SearchQuery = Backbone.Collection.extend({
+
+  // Model holds the category and value of the facet.
+  model : VS.model.SearchFacet,
+  
+  // Turns all of the facets into a single serialized string.
+  serialize : function() {
+    return this.map(function(facet){ return facet.serialize(); }).join(' ');
+  },
+  
+  facets : function() {
+    return this.map(function(facet) {
+      var value = {};
+      value[facet.get('category')] = facet.get('value');
+      return value;
+    });
+  },
+
+  // Find a facet by its category. Multiple facets with the same category
+  // is fine, but only the first is returned.
+  find : function(category) {
+    var facet = this.detect(function(facet) {
+      return facet.get('category').toLowerCase() == category.toLowerCase();
+    });
+    return facet && facet.get('value');
+  },
+
+  // Counts the number of times a specific category is in the search query.
+  count : function(category) {
+    return this.select(function(facet) {
+      return facet.get('category').toLowerCase() == category.toLowerCase();
+    }).length;
+  },
+
+  // Returns an array of extracted values from each facet in a category.
+  values : function(category) {
+    var facets = this.select(function(facet) {
+      return facet.get('category').toLowerCase() == category.toLowerCase();
+    });
+    return _.map(facets, function(facet) { return facet.get('value'); });
+  },
+
+  // Checks all facets for matches of either a category or both category and value.
+  has : function(category, value) {
+    return this.any(function(facet) {
+      var categoryMatched = facet.get('category').toLowerCase() == category.toLowerCase();
+      if (!value) return categoryMatched;
+      return categoryMatched && facet.get('value') == value;
+    });
+  },
+
+  // Used to temporarily hide specific categories and serialize the search query.
+  withoutCategory : function() {
+    var categories = _.map(_.toArray(arguments), function(cat) { return cat.toLowerCase(); });
+    return this.map(function(facet) {
+      if (!_.include(categories, facet.get('category').toLowerCase())) { 
+        return facet.serialize();
+      };
+    }).join(' ');
+  }
+
+});
+
+})();
+(function(){
+window.JST = window.JST || {};
+
+window.JST['search_box'] = _.template('<div class="VS-search">\n  <div class="VS-search-box-wrapper VS-search-box">\n    <div class="VS-icon VS-icon-search"></div>\n    <div class="VS-placeholder"></div>\n    <div class="VS-search-inner"></div>\n    <div class="VS-icon VS-icon-cancel VS-cancel-search-box" title="clear search"></div>\n  </div>\n</div>');
+window.JST['search_facet'] = _.template('<% if (model.has(\'category\')) { %>\n  <div class="category"><%= model.get(\'category\') %>:</div>\n<% } %>\n\n<div class="search_facet_input_container">\n  <input type="text" class="search_facet_input ui-menu VS-interface" value="" />\n</div>\n\n<div class="search_facet_remove VS-icon VS-icon-cancel"></div>');
+window.JST['search_input'] = _.template('<input type="text" class="ui-menu" />');
+})();
\ No newline at end of file