added js_selectize module.

3 files changed, 4077 insertions, 0 deletions

diff --git a/modules-available/js_selectize/clientscript.js b/modules-available/js_selectize/clientscript.js
new file mode 100644
index 00000000..e8c09140
--- /dev/null
+++ b/modules-available/js_selectize/clientscript.js
@@ -0,0 +1,3667 @@
+/**
+ * sifter.js
+ * Copyright (c) 2013 Brian Reavis & contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the License at:
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+ * ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ *
+ * @author Brian Reavis <brian@thirdroute.com>
+ */
+
+(function(root, factory) {
+	if (typeof define === 'function' && define.amd) {
+		define('sifter', factory);
+	} else if (typeof exports === 'object') {
+		module.exports = factory();
+	} else {
+		root.Sifter = factory();
+	}
+}(this, function() {
+
+	/**
+	 * Textually searches arrays and hashes of objects
+	 * by property (or multiple properties). Designed
+	 * specifically for autocomplete.
+	 *
+	 * @constructor
+	 * @param {array|object} items
+	 * @param {object} items
+	 */
+	var Sifter = function(items, settings) {
+		this.items = items;
+		this.settings = settings || {diacritics: true};
+	};
+
+	/**
+	 * Splits a search string into an array of individual
+	 * regexps to be used to match results.
+	 *
+	 * @param {string} query
+	 * @returns {array}
+	 */
+	Sifter.prototype.tokenize = function(query) {
+		query = trim(String(query || '').toLowerCase());
+		if (!query || !query.length) return [];
+
+		var i, n, regex, letter;
+		var tokens = [];
+		var words = query.split(/ +/);
+
+		for (i = 0, n = words.length; i < n; i++) {
+			regex = escape_regex(words[i]);
+			if (this.settings.diacritics) {
+				for (letter in DIACRITICS) {
+					if (DIACRITICS.hasOwnProperty(letter)) {
+						regex = regex.replace(new RegExp(letter, 'g'), DIACRITICS[letter]);
+					}
+				}
+			}
+			tokens.push({
+				string : words[i],
+				regex  : new RegExp(regex, 'i')
+			});
+		}
+
+		return tokens;
+	};
+
+	/**
+	 * Iterates over arrays and hashes.
+	 *
+	 * ```
+	 * this.iterator(this.items, function(item, id) {
+	 *    // invoked for each item
+	 * });
+	 * ```
+	 *
+	 * @param {array|object} object
+	 */
+	Sifter.prototype.iterator = function(object, callback) {
+		var iterator;
+		if (is_array(object)) {
+			iterator = Array.prototype.forEach || function(callback) {
+				for (var i = 0, n = this.length; i < n; i++) {
+					callback(this[i], i, this);
+				}
+			};
+		} else {
+			iterator = function(callback) {
+				for (var key in this) {
+					if (this.hasOwnProperty(key)) {
+						callback(this[key], key, this);
+					}
+				}
+			};
+		}
+
+		iterator.apply(object, [callback]);
+	};
+
+	/**
+	 * Returns a function to be used to score individual results.
+	 *
+	 * Good matches will have a higher score than poor matches.
+	 * If an item is not a match, 0 will be returned by the function.
+	 *
+	 * @param {object|string} search
+	 * @param {object} options (optional)
+	 * @returns {function}
+	 */
+	Sifter.prototype.getScoreFunction = function(search, options) {
+		var self, fields, tokens, token_count;
+
+		self        = this;
+		search      = self.prepareSearch(search, options);
+		tokens      = search.tokens;
+		fields      = search.options.fields;
+		token_count = tokens.length;
+
+		/**
+		 * Calculates how close of a match the
+		 * given value is against a search token.
+		 *
+		 * @param {mixed} value
+		 * @param {object} token
+		 * @return {number}
+		 */
+		var scoreValue = function(value, token) {
+			var score, pos;
+
+			if (!value) return 0;
+			value = String(value || '');
+			pos = value.search(token.regex);
+			if (pos === -1) return 0;
+			score = token.string.length / value.length;
+			if (pos === 0) score += 0.5;
+			return score;
+		};
+
+		/**
+		 * Calculates the score of an object
+		 * against the search query.
+		 *
+		 * @param {object} token
+		 * @param {object} data
+		 * @return {number}
+		 */
+		var scoreObject = (function() {
+			var field_count = fields.length;
+			if (!field_count) {
+				return function() { return 0; };
+			}
+			if (field_count === 1) {
+				return function(token, data) {
+					return scoreValue(data[fields[0]], token);
+				};
+			}
+			return function(token, data) {
+				for (var i = 0, sum = 0; i < field_count; i++) {
+					sum += scoreValue(data[fields[i]], token);
+				}
+				return sum / field_count;
+			};
+		})();
+
+		if (!token_count) {
+			return function() { return 0; };
+		}
+		if (token_count === 1) {
+			return function(data) {
+				return scoreObject(tokens[0], data);
+			};
+		}
+
+		if (search.options.conjunction === 'and') {
+			return function(data) {
+				var score;
+				for (var i = 0, sum = 0; i < token_count; i++) {
+					score = scoreObject(tokens[i], data);
+					if (score <= 0) return 0;
+					sum += score;
+				}
+				return sum / token_count;
+			};
+		} else {
+			return function(data) {
+				for (var i = 0, sum = 0; i < token_count; i++) {
+					sum += scoreObject(tokens[i], data);
+				}
+				return sum / token_count;
+			};
+		}
+	};
+
+	/**
+	 * Returns a function that can be used to compare two
+	 * results, for sorting purposes. If no sorting should
+	 * be performed, `null` will be returned.
+	 *
+	 * @param {string|object} search
+	 * @param {object} options
+	 * @return function(a,b)
+	 */
+	Sifter.prototype.getSortFunction = function(search, options) {
+		var i, n, self, field, fields, fields_count, multiplier, multipliers, get_field, implicit_score, sort;
+
+		self   = this;
+		search = self.prepareSearch(search, options);
+		sort   = (!search.query && options.sort_empty) || options.sort;
+
+		/**
+		 * Fetches the specified sort field value
+		 * from a search result item.
+		 *
+		 * @param  {string} name
+		 * @param  {object} result
+		 * @return {mixed}
+		 */
+		get_field = function(name, result) {
+			if (name === '$score') return result.score;
+			return self.items[result.id][name];
+		};
+
+		// parse options
+		fields = [];
+		if (sort) {
+			for (i = 0, n = sort.length; i < n; i++) {
+				if (search.query || sort[i].field !== '$score') {
+					fields.push(sort[i]);
+				}
+			}
+		}
+
+		// the "$score" field is implied to be the primary
+		// sort field, unless it's manually specified
+		if (search.query) {
+			implicit_score = true;
+			for (i = 0, n = fields.length; i < n; i++) {
+				if (fields[i].field === '$score') {
+					implicit_score = false;
+					break;
+				}
+			}
+			if (implicit_score) {
+				fields.unshift({field: '$score', direction: 'desc'});
+			}
+		} else {
+			for (i = 0, n = fields.length; i < n; i++) {
+				if (fields[i].field === '$score') {
+					fields.splice(i, 1);
+					break;
+				}
+			}
+		}
+
+		multipliers = [];
+		for (i = 0, n = fields.length; i < n; i++) {
+			multipliers.push(fields[i].direction === 'desc' ? -1 : 1);
+		}
+
+		// build function
+		fields_count = fields.length;
+		if (!fields_count) {
+			return null;
+		} else if (fields_count === 1) {
+			field = fields[0].field;
+			multiplier = multipliers[0];
+			return function(a, b) {
+				return multiplier * cmp(
+					get_field(field, a),
+					get_field(field, b)
+				);
+			};
+		} else {
+			return function(a, b) {
+				var i, result, a_value, b_value, field;
+				for (i = 0; i < fields_count; i++) {
+					field = fields[i].field;
+					result = multipliers[i] * cmp(
+						get_field(field, a),
+						get_field(field, b)
+					);
+					if (result) return result;
+				}
+				return 0;
+			};
+		}
+	};
+
+	/**
+	 * Parses a search query and returns an object
+	 * with tokens and fields ready to be populated
+	 * with results.
+	 *
+	 * @param {string} query
+	 * @param {object} options
+	 * @returns {object}
+	 */
+	Sifter.prototype.prepareSearch = function(query, options) {
+		if (typeof query === 'object') return query;
+
+		options = extend({}, options);
+
+		var option_fields     = options.fields;
+		var option_sort       = options.sort;
+		var option_sort_empty = options.sort_empty;
+
+		if (option_fields && !is_array(option_fields)) options.fields = [option_fields];
+		if (option_sort && !is_array(option_sort)) options.sort = [option_sort];
+		if (option_sort_empty && !is_array(option_sort_empty)) options.sort_empty = [option_sort_empty];
+
+		return {
+			options : options,
+			query   : String(query || '').toLowerCase(),
+			tokens  : this.tokenize(query),
+			total   : 0,
+			items   : []
+		};
+	};
+
+	/**
+	 * Searches through all items and returns a sorted array of matches.
+	 *
+	 * The `options` parameter can contain:
+	 *
+	 *   - fields {string|array}
+	 *   - sort {array}
+	 *   - score {function}
+	 *   - filter {bool}
+	 *   - limit {integer}
+	 *
+	 * Returns an object containing:
+	 *
+	 *   - options {object}
+	 *   - query {string}
+	 *   - tokens {array}
+	 *   - total {int}
+	 *   - items {array}
+	 *
+	 * @param {string} query
+	 * @param {object} options
+	 * @returns {object}
+	 */
+	Sifter.prototype.search = function(query, options) {
+		var self = this, value, score, search, calculateScore;
+		var fn_sort;
+		var fn_score;
+
+		search  = this.prepareSearch(query, options);
+		options = search.options;
+		query   = search.query;
+
+		// generate result scoring function
+		fn_score = options.score || self.getScoreFunction(search);
+
+		// perform search and sort
+		if (query.length) {
+			self.iterator(self.items, function(item, id) {
+				score = fn_score(item);
+				if (options.filter === false || score > 0) {
+					search.items.push({'score': score, 'id': id});
+				}
+			});
+		} else {
+			self.iterator(self.items, function(item, id) {
+				search.items.push({'score': 1, 'id': id});
+			});
+		}
+
+		fn_sort = self.getSortFunction(search, options);
+		if (fn_sort) search.items.sort(fn_sort);
+
+		// apply limits
+		search.total = search.items.length;
+		if (typeof options.limit === 'number') {
+			search.items = search.items.slice(0, options.limit);
+		}
+
+		return search;
+	};
+
+	// utilities
+	// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+	var cmp = function(a, b) {
+		if (typeof a === 'number' && typeof b === 'number') {
+			return a > b ? 1 : (a < b ? -1 : 0);
+		}
+		a = asciifold(String(a || ''));
+		b = asciifold(String(b || ''));
+		if (a > b) return 1;
+		if (b > a) return -1;
+		return 0;
+	};
+
+	var extend = function(a, b) {
+		var i, n, k, object;
+		for (i = 1, n = arguments.length; i < n; i++) {
+			object = arguments[i];
+			if (!object) continue;
+			for (k in object) {
+				if (object.hasOwnProperty(k)) {
+					a[k] = object[k];
+				}
+			}
+		}
+		return a;
+	};
+
+	var trim = function(str) {
+		return (str + '').replace(/^\s+|\s+$|/g, '');
+	};
+
+	var escape_regex = function(str) {
+		return (str + '').replace(/([.?*+^$[\]\\(){}|-])/g, '\\$1');
+	};
+
+	var is_array = Array.isArray || ($ && $.isArray) || function(object) {
+		return Object.prototype.toString.call(object) === '[object Array]';
+	};
+
+	var DIACRITICS = {
+		'a': '[aÀÁÂÃÄÅàáâãäåĀāąĄ]',
+		'c': '[cÇçćĆčČ]',
+		'd': '[dđĐďĎ]',
+		'e': '[eÈÉÊËèéêëěĚĒēęĘ]',
+		'i': '[iÌÍÎÏìíîïĪī]',
+		'l': '[lłŁ]',
+		'n': '[nÑñňŇńŃ]',
+		'o': '[oÒÓÔÕÕÖØòóôõöøŌō]',
+		'r': '[rřŘ]',
+		's': '[sŠšśŚ]',
+		't': '[tťŤ]',
+		'u': '[uÙÚÛÜùúûüůŮŪū]',
+		'y': '[yŸÿýÝ]',
+		'z': '[zŽžżŻźŹ]'
+	};
+
+	var asciifold = (function() {
+		var i, n, k, chunk;
+		var foreignletters = '';
+		var lookup = {};
+		for (k in DIACRITICS) {
+			if (DIACRITICS.hasOwnProperty(k)) {
+				chunk = DIACRITICS[k].substring(2, DIACRITICS[k].length - 1);
+				foreignletters += chunk;
+				for (i = 0, n = chunk.length; i < n; i++) {
+					lookup[chunk.charAt(i)] = k;
+				}
+			}
+		}
+		var regexp = new RegExp('[' +  foreignletters + ']', 'g');
+		return function(str) {
+			return str.replace(regexp, function(foreignletter) {
+				return lookup[foreignletter];
+			}).toLowerCase();
+		};
+	})();
+
+
+	// export
+	// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+	return Sifter;
+}));
+
+
+
+/**
+ * microplugin.js
+ * Copyright (c) 2013 Brian Reavis & contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the License at:
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+ * ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ *
+ * @author Brian Reavis <brian@thirdroute.com>
+ */
+
+(function(root, factory) {
+	if (typeof define === 'function' && define.amd) {
+		define('microplugin', factory);
+	} else if (typeof exports === 'object') {
+		module.exports = factory();
+	} else {
+		root.MicroPlugin = factory();
+	}
+}(this, function() {
+	var MicroPlugin = {};
+
+	MicroPlugin.mixin = function(Interface) {
+		Interface.plugins = {};
+
+		/**
+		 * Initializes the listed plugins (with options).
+		 * Acceptable formats:
+		 *
+		 * List (without options):
+		 *   ['a', 'b', 'c']
+		 *
+		 * List (with options):
+		 *   [{'name': 'a', options: {}}, {'name': 'b', options: {}}]
+		 *
+		 * Hash (with options):
+		 *   {'a': { ... }, 'b': { ... }, 'c': { ... }}
+		 *
+		 * @param {mixed} plugins
+		 */
+		Interface.prototype.initializePlugins = function(plugins) {
+			var i, n, key;
+			var self  = this;
+			var queue = [];
+
+			self.plugins = {
+				names     : [],
+				settings  : {},
+				requested : {},
+				loaded    : {}
+			};
+
+			if (utils.isArray(plugins)) {
+				for (i = 0, n = plugins.length; i < n; i++) {
+					if (typeof plugins[i] === 'string') {
+						queue.push(plugins[i]);
+					} else {
+						self.plugins.settings[plugins[i].name] = plugins[i].options;
+						queue.push(plugins[i].name);
+					}
+				}
+			} else if (plugins) {
+				for (key in plugins) {
+					if (plugins.hasOwnProperty(key)) {
+						self.plugins.settings[key] = plugins[key];
+						queue.push(key);
+					}
+				}
+			}
+
+			while (queue.length) {
+				self.require(queue.shift());
+			}
+		};
+
+		Interface.prototype.loadPlugin = function(name) {
+			var self    = this;
+			var plugins = self.plugins;
+			var plugin  = Interface.plugins[name];
+
+			if (!Interface.plugins.hasOwnProperty(name)) {
+				throw new Error('Unable to find "' +  name + '" plugin');
+			}
+
+			plugins.requested[name] = true;
+			plugins.loaded[name] = plugin.fn.apply(self, [self.plugins.settings[name] || {}]);
+			plugins.names.push(name);
+		};
+
+		/**
+		 * Initializes a plugin.
+		 *
+		 * @param {string} name
+		 */
+		Interface.prototype.require = function(name) {
+			var self = this;
+			var plugins = self.plugins;
+
+			if (!self.plugins.loaded.hasOwnProperty(name)) {
+				if (plugins.requested[name]) {
+					throw new Error('Plugin has circular dependency ("' + name + '")');
+				}
+				self.loadPlugin(name);
+			}
+
+			return plugins.loaded[name];
+		};
+
+		/**
+		 * Registers a plugin.
+		 *
+		 * @param {string} name
+		 * @param {function} fn
+		 */
+		Interface.define = function(name, fn) {
+			Interface.plugins[name] = {
+				'name' : name,
+				'fn'   : fn
+			};
+		};
+	};
+
+	var utils = {
+		isArray: Array.isArray || function(vArg) {
+			return Object.prototype.toString.call(vArg) === '[object Array]';
+		}
+	};
+
+	return MicroPlugin;
+}));
+
+/**
+ * selectize.js (v0.12.1)
+ * Copyright (c) 2013–2015 Brian Reavis & contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the License at:
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+ * ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ *
+ * @author Brian Reavis <brian@thirdroute.com>
+ */
+
+/*jshint curly:false */
+/*jshint browser:true */
+
+(function(root, factory) {
+	if (typeof define === 'function' && define.amd) {
+		define('selectize', ['jquery','sifter','microplugin'], factory);
+	} else if (typeof exports === 'object') {
+		module.exports = factory(require('jquery'), require('sifter'), require('microplugin'));
+	} else {
+		root.Selectize = factory(root.jQuery, root.Sifter, root.MicroPlugin);
+	}
+}(this, function($, Sifter, MicroPlugin) {
+	'use strict';
+
+	var highlight = function($element, pattern) {
+		if (typeof pattern === 'string' && !pattern.length) return;
+		var regex = (typeof pattern === 'string') ? new RegExp(pattern, 'i') : pattern;
+	
+		var highlight = function(node) {
+			var skip = 0;
+			if (node.nodeType === 3) {
+				var pos = node.data.search(regex);
+				if (pos >= 0 && node.data.length > 0) {
+					var match = node.data.match(regex);
+					var spannode = document.createElement('span');
+					spannode.className = 'highlight';
+					var middlebit = node.splitText(pos);
+					var endbit = middlebit.splitText(match[0].length);
+					var middleclone = middlebit.cloneNode(true);
+					spannode.appendChild(middleclone);
+					middlebit.parentNode.replaceChild(spannode, middlebit);
+					skip = 1;
+				}
+			} else if (node.nodeType === 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
+				for (var i = 0; i < node.childNodes.length; ++i) {
+					i += highlight(node.childNodes[i]);
+				}
+			}
+			return skip;
+		};
+	
+		return $element.each(function() {
+			highlight(this);
+		});
+	};
+	
+	var MicroEvent = function() {};
+	MicroEvent.prototype = {
+		on: function(event, fct){
+			this._events = this._events || {};
+			this._events[event] = this._events[event] || [];
+			this._events[event].push(fct);
+		},
+		off: function(event, fct){
+			var n = arguments.length;
+			if (n === 0) return delete this._events;
+			if (n === 1) return delete this._events[event];
+	
+			this._events = this._events || {};
+			if (event in this._events === false) return;
+			this._events[event].splice(this._events[event].indexOf(fct), 1);
+		},
+		trigger: function(event /* , args... */){
+			this._events = this._events || {};
+			if (event in this._events === false) return;
+			for (var i = 0; i < this._events[event].length; i++){
+				this._events[event][i].apply(this, Array.prototype.slice.call(arguments, 1));
+			}
+		}
+	};
+	
+	/**
+	 * Mixin will delegate all MicroEvent.js function in the destination object.
+	 *
+	 * - MicroEvent.mixin(Foobar) will make Foobar able to use MicroEvent
+	 *
+	 * @param {object} the object which will support MicroEvent
+	 */
+	MicroEvent.mixin = function(destObject){
+		var props = ['on', 'off', 'trigger'];
+		for (var i = 0; i < props.length; i++){
+			destObject.prototype[props[i]] = MicroEvent.prototype[props[i]];
+		}
+	};
+	
+	var IS_MAC        = /Mac/.test(navigator.userAgent);
+	
+	var KEY_A         = 65;
+	var KEY_COMMA     = 188;
+	var KEY_RETURN    = 13;
+	var KEY_ESC       = 27;
+	var KEY_LEFT      = 37;
+	var KEY_UP        = 38;
+	var KEY_P         = 80;
+	var KEY_RIGHT     = 39;
+	var KEY_DOWN      = 40;
+	var KEY_N         = 78;
+	var KEY_BACKSPACE = 8;
+	var KEY_DELETE    = 46;
+	var KEY_SHIFT     = 16;
+	var KEY_CMD       = IS_MAC ? 91 : 17;
+	var KEY_CTRL      = IS_MAC ? 18 : 17;
+	var KEY_TAB       = 9;
+	
+	var TAG_SELECT    = 1;
+	var TAG_INPUT     = 2;
+	
+	// for now, android support in general is too spotty to support validity
+	var SUPPORTS_VALIDITY_API = !/android/i.test(window.navigator.userAgent) && !!document.createElement('form').validity;
+	
+	var isset = function(object) {
+		return typeof object !== 'undefined';
+	};
+	
+	/**
+	 * Converts a scalar to its best string representation
+	 * for hash keys and HTML attribute values.
+	 *
+	 * Transformations:
+	 *   'str'     -> 'str'
+	 *   null      -> ''
+	 *   undefined -> ''
+	 *   true      -> '1'
+	 *   false     -> '0'
+	 *   0         -> '0'
+	 *   1         -> '1'
+	 *
+	 * @param {string} value
+	 * @returns {string|null}
+	 */
+	var hash_key = function(value) {
+		if (typeof value === 'undefined' || value === null) return null;
+		if (typeof value === 'boolean') return value ? '1' : '0';
+		return value + '';
+	};
+	
+	/**
+	 * Escapes a string for use within HTML.
+	 *
+	 * @param {string} str
+	 * @returns {string}
+	 */
+	var escape_html = function(str) {
+		return (str + '')
+			.replace(/&/g, '&amp;')
+			.replace(/</g, '&lt;')
+			.replace(/>/g, '&gt;')
+			.replace(/"/g, '&quot;');
+	};
+	
+	/**
+	 * Escapes "$" characters in replacement strings.
+	 *
+	 * @param {string} str
+	 * @returns {string}
+	 */
+	var escape_replace = function(str) {
+		return (str + '').replace(/\$/g, '$$$$');
+	};
+	
+	var hook = {};
+	
+	/**
+	 * Wraps `method` on `self` so that `fn`
+	 * is invoked before the original method.
+	 *
+	 * @param {object} self
+	 * @param {string} method
+	 * @param {function} fn
+	 */
+	hook.before = function(self, method, fn) {
+		var original = self[method];
+		self[method] = function() {
+			fn.apply(self, arguments);
+			return original.apply(self, arguments);
+		};
+	};
+	
+	/**
+	 * Wraps `method` on `self` so that `fn`
+	 * is invoked after the original method.
+	 *
+	 * @param {object} self
+	 * @param {string} method
+	 * @param {function} fn
+	 */
+	hook.after = function(self, method, fn) {
+		var original = self[method];
+		self[method] = function() {
+			var result = original.apply(self, arguments);
+			fn.apply(self, arguments);
+			return result;
+		};
+	};
+	
+	/**
+	 * Wraps `fn` so that it can only be invoked once.
+	 *
+	 * @param {function} fn
+	 * @returns {function}
+	 */
+	var once = function(fn) {
+		var called = false;
+		return function() {
+			if (called) return;
+			called = true;
+			fn.apply(this, arguments);
+		};
+	};
+	
+	/**
+	 * Wraps `fn` so that it can only be called once
+	 * every `delay` milliseconds (invoked on the falling edge).
+	 *
+	 * @param {function} fn
+	 * @param {int} delay
+	 * @returns {function}
+	 */
+	var debounce = function(fn, delay) {
+		var timeout;
+		return function() {
+			var self = this;
+			var args = arguments;
+			window.clearTimeout(timeout);
+			timeout = window.setTimeout(function() {
+				fn.apply(self, args);
+			}, delay);
+		};
+	};
+	
+	/**
+	 * Debounce all fired events types listed in `types`
+	 * while executing the provided `fn`.
+	 *
+	 * @param {object} self
+	 * @param {array} types
+	 * @param {function} fn
+	 */
+	var debounce_events = function(self, types, fn) {
+		var type;
+		var trigger = self.trigger;
+		var event_args = {};
+	
+		// override trigger method
+		self.trigger = function() {
+			var type = arguments[0];
+			if (types.indexOf(type) !== -1) {
+				event_args[type] = arguments;
+			} else {
+				return trigger.apply(self, arguments);
+			}
+		};
+	
+		// invoke provided function
+		fn.apply(self, []);
+		self.trigger = trigger;
+	
+		// trigger queued events
+		for (type in event_args) {
+			if (event_args.hasOwnProperty(type)) {
+				trigger.apply(self, event_args[type]);
+			}
+		}
+	};
+	
+	/**
+	 * A workaround for http://bugs.jquery.com/ticket/6696
+	 *
+	 * @param {object} $parent - Parent element to listen on.
+	 * @param {string} event - Event name.
+	 * @param {string} selector - Descendant selector to filter by.
+	 * @param {function} fn - Event handler.
+	 */
+	var watchChildEvent = function($parent, event, selector, fn) {
+		$parent.on(event, selector, function(e) {
+			var child = e.target;
+			while (child && child.parentNode !== $parent[0]) {
+				child = child.parentNode;
+			}
+			e.currentTarget = child;
+			return fn.apply(this, [e]);
+		});
+	};
+	
+	/**
+	 * Determines the current selection within a text input control.
+	 * Returns an object containing:
+	 *   - start
+	 *   - length
+	 *
+	 * @param {object} input
+	 * @returns {object}
+	 */
+	var getSelection = function(input) {
+		var result = {};
+		if ('selectionStart' in input) {
+			result.start = input.selectionStart;
+			result.length = input.selectionEnd - result.start;
+		} else if (document.selection) {
+			input.focus();
+			var sel = document.selection.createRange();
+			var selLen = document.selection.createRange().text.length;
+			sel.moveStart('character', -input.value.length);
+			result.start = sel.text.length - selLen;
+			result.length = selLen;
+		}
+		return result;
+	};
+	
+	/**
+	 * Copies CSS properties from one element to another.
+	 *
+	 * @param {object} $from
+	 * @param {object} $to
+	 * @param {array} properties
+	 */
+	var transferStyles = function($from, $to, properties) {
+		var i, n, styles = {};
+		if (properties) {
+			for (i = 0, n = properties.length; i < n; i++) {
+				styles[properties[i]] = $from.css(properties[i]);
+			}
+		} else {
+			styles = $from.css();
+		}
+		$to.css(styles);
+	};
+	
+	/**
+	 * Measures the width of a string within a
+	 * parent element (in pixels).
+	 *
+	 * @param {string} str
+	 * @param {object} $parent
+	 * @returns {int}
+	 */
+	var measureString = function(str, $parent) {
+		if (!str) {
+			return 0;
+		}
+	
+		var $test = $('<test>').css({
+			position: 'absolute',
+			top: -99999,
+			left: -99999,
+			width: 'auto',
+			padding: 0,
+			whiteSpace: 'pre'
+		}).text(str).appendTo('body');
+	
+		transferStyles($parent, $test, [
+			'letterSpacing',
+			'fontSize',
+			'fontFamily',
+			'fontWeight',
+			'textTransform'
+		]);
+	
+		var width = $test.width();
+		$test.remove();
+	
+		return width;
+	};
+	
+	/**
+	 * Sets up an input to grow horizontally as the user
+	 * types. If the value is changed manually, you can
+	 * trigger the "update" handler to resize:
+	 *
+	 * $input.trigger('update');
+	 *
+	 * @param {object} $input
+	 */
+	var autoGrow = function($input) {
+		var currentWidth = null;
+	
+		var update = function(e, options) {
+			var value, keyCode, printable, placeholder, width;
+			var shift, character, selection;
+			e = e || window.event || {};
+			options = options || {};
+	
+			if (e.metaKey || e.altKey) return;
+			if (!options.force && $input.data('grow') === false) return;
+	
+			value = $input.val();
+			if (e.type && e.type.toLowerCase() === 'keydown') {
+				keyCode = e.keyCode;
+				printable = (
+					(keyCode >= 97 && keyCode <= 122) || // a-z
+					(keyCode >= 65 && keyCode <= 90)  || // A-Z
+					(keyCode >= 48 && keyCode <= 57)  || // 0-9
+					keyCode === 32 // space
+				);
+	
+				if (keyCode === KEY_DELETE || keyCode === KEY_BACKSPACE) {
+					selection = getSelection($input[0]);
+					if (selection.length) {
+						value = value.substring(0, selection.start) + value.substring(selection.start + selection.length);
+					} else if (keyCode === KEY_BACKSPACE && selection.start) {
+						value = value.substring(0, selection.start - 1) + value.substring(selection.start + 1);
+					} else if (keyCode === KEY_DELETE && typeof selection.start !== 'undefined') {
+						value = value.substring(0, selection.start) + value.substring(selection.start + 1);
+					}
+				} else if (printable) {
+					shift = e.shiftKey;
+					character = String.fromCharCode(e.keyCode);
+					if (shift) character = character.toUpperCase();
+					else character = character.toLowerCase();
+					value += character;
+				}
+			}
+	
+			placeholder = $input.attr('placeholder');
+			if (!value && placeholder) {
+				value = placeholder;
+			}
+	
+			width = measureString(value, $input) + 4;
+			if (width !== currentWidth) {
+				currentWidth = width;
+				$input.width(width);
+				$input.triggerHandler('resize');
+			}
+		};
+	
+		$input.on('keydown keyup update blur', update);
+		update();
+	};
+	
+	var Selectize = function($input, settings) {
+		var key, i, n, dir, input, self = this;
+		input = $input[0];
+		input.selectize = self;
+	
+		// detect rtl environment
+		var computedStyle = window.getComputedStyle && window.getComputedStyle(input, null);
+		dir = computedStyle ? computedStyle.getPropertyValue('direction') : input.currentStyle && input.currentStyle.direction;
+		dir = dir || $input.parents('[dir]:first').attr('dir') || '';
+	
+		// setup default state
+		$.extend(self, {
+			order            : 0,
+			settings         : settings,
+			$input           : $input,
+			tabIndex         : $input.attr('tabindex') || '',
+			tagType          : input.tagName.toLowerCase() === 'select' ? TAG_SELECT : TAG_INPUT,
+			rtl              : /rtl/i.test(dir),
+	
+			eventNS          : '.selectize' + (++Selectize.count),
+			highlightedValue : null,
+			isOpen           : false,
+			isDisabled       : false,
+			isRequired       : $input.is('[required]'),
+			isInvalid        : false,
+			isLocked         : false,
+			isFocused        : false,
+			isInputHidden    : false,
+			isSetup          : false,
+			isShiftDown      : false,
+			isCmdDown        : false,
+			isCtrlDown       : false,
+			ignoreFocus      : false,
+			ignoreBlur       : false,
+			ignoreHover      : false,
+			hasOptions       : false,
+			currentResults   : null,
+			lastValue        : '',
+			caretPos         : 0,
+			loading          : 0,
+			loadedSearches   : {},
+	
+			$activeOption    : null,
+			$activeItems     : [],
+	
+			optgroups        : {},
+			options          : {},
+			userOptions      : {},
+			items            : [],
+			renderCache      : {},
+			onSearchChange   : settings.loadThrottle === null ? self.onSearchChange : debounce(self.onSearchChange, settings.loadThrottle)
+		});
+	
+		// search system
+		self.sifter = new Sifter(this.options, {diacritics: settings.diacritics});
+	
+		// build options table
+		if (self.settings.options) {
+			for (i = 0, n = self.settings.options.length; i < n; i++) {
+				self.registerOption(self.settings.options[i]);
+			}
+			delete self.settings.options;
+		}
+	
+		// build optgroup table
+		if (self.settings.optgroups) {
+			for (i = 0, n = self.settings.optgroups.length; i < n; i++) {
+				self.registerOptionGroup(self.settings.optgroups[i]);
+			}
+			delete self.settings.optgroups;
+		}
+	
+		// option-dependent defaults
+		self.settings.mode = self.settings.mode || (self.settings.maxItems === 1 ? 'single' : 'multi');
+		if (typeof self.settings.hideSelected !== 'boolean') {
+			self.settings.hideSelected = self.settings.mode === 'multi';
+		}
+	
+		self.initializePlugins(self.settings.plugins);
+		self.setupCallbacks();
+		self.setupTemplates();
+		self.setup();
+	};
+	
+	// mixins
+	// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+	
+	MicroEvent.mixin(Selectize);
+	MicroPlugin.mixin(Selectize);
+	
+	// methods
+	// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+	
+	$.extend(Selectize.prototype, {
+	
+		/**
+		 * Creates all elements and sets up event bindings.
+		 */
+		setup: function() {
+			var self      = this;
+			var settings  = self.settings;
+			var eventNS   = self.eventNS;
+			var $window   = $(window);
+			var $document = $(document);
+			var $input    = self.$input;
+	
+			var $wrapper;
+			var $control;
+			var $control_input;
+			var $dropdown;
+			var $dropdown_content;
+			var $dropdown_parent;
+			var inputMode;
+			var timeout_blur;
+			var timeout_focus;
+			var classes;
+			var classes_plugins;
+	
+			inputMode         = self.settings.mode;
+			classes           = $input.attr('class') || '';
+	
+			$wrapper          = $('<div>').addClass(settings.wrapperClass).addClass(classes).addClass(inputMode);
+			$control          = $('<div>').addClass(settings.inputClass).addClass('items').appendTo($wrapper);
+			$control_input    = $('<input type="text" autocomplete="off" />').appendTo($control).attr('tabindex', $input.is(':disabled') ? '-1' : self.tabIndex);
+			$dropdown_parent  = $(settings.dropdownParent || $wrapper);
+			$dropdown         = $('<div>').addClass(settings.dropdownClass).addClass(inputMode).hide().appendTo($dropdown_parent);
+			$dropdown_content = $('<div>').addClass(settings.dropdownContentClass).appendTo($dropdown);
+	
+			if(self.settings.copyClassesToDropdown) {
+				$dropdown.addClass(classes);
+			}
+	
+			$wrapper.css({
+				width: $input[0].style.width
+			});
+	
+			if (self.plugins.names.length) {
+				classes_plugins = 'plugin-' + self.plugins.names.join(' plugin-');
+				$wrapper.addClass(classes_plugins);
+				$dropdown.addClass(classes_plugins);
+			}
+	
+			if ((settings.maxItems === null || settings.maxItems > 1) && self.tagType === TAG_SELECT) {
+				$input.attr('multiple', 'multiple');
+			}
+	
+			if (self.settings.placeholder) {
+				$control_input.attr('placeholder', settings.placeholder);
+			}
+	
+			// if splitOn was not passed in, construct it from the delimiter to allow pasting universally
+			if (!self.settings.splitOn && self.settings.delimiter) {
+				var delimiterEscaped = self.settings.delimiter.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
+				self.settings.splitOn = new RegExp('\\s*' + delimiterEscaped + '+\\s*');
+			}
+	
+			if ($input.attr('autocorrect')) {
+				$control_input.attr('autocorrect', $input.attr('autocorrect'));
+			}
+	
+			if ($input.attr('autocapitalize')) {
+				$control_input.attr('autocapitalize', $input.attr('autocapitalize'));
+			}
+	
+			self.$wrapper          = $wrapper;
+			self.$control          = $control;
+			self.$control_input    = $control_input;
+			self.$dropdown         = $dropdown;
+			self.$dropdown_content = $dropdown_content;
+	
+			$dropdown.on('mouseenter', '[data-selectable]', function() { return self.onOptionHover.apply(self, arguments); });
+			$dropdown.on('mousedown click', '[data-selectable]', function() { return self.onOptionSelect.apply(self, arguments); });
+			watchChildEvent($control, 'mousedown', '*:not(input)', function() { return self.onItemSelect.apply(self, arguments); });
+			autoGrow($control_input);
+	
+			$control.on({
+				mousedown : function() { return self.onMouseDown.apply(self, arguments); },
+				click     : function() { return self.onClick.apply(self, arguments); }
+			});
+	
+			$control_input.on({
+				mousedown : function(e) { e.stopPropagation(); },
+				keydown   : function() { return self.onKeyDown.apply(self, arguments); },
+				keyup     : function() { return self.onKeyUp.apply(self, arguments); },
+				keypress  : function() { return self.onKeyPress.apply(self, arguments); },
+				resize    : function() { self.positionDropdown.apply(self, []); },
+				blur      : function() { return self.onBlur.apply(self, arguments); },
+				focus     : function() { self.ignoreBlur = false; return self.onFocus.apply(self, arguments); },
+				paste     : function() { return self.onPaste.apply(self, arguments); }
+			});
+	
+			$document.on('keydown' + eventNS, function(e) {
+				self.isCmdDown = e[IS_MAC ? 'metaKey' : 'ctrlKey'];
+				self.isCtrlDown = e[IS_MAC ? 'altKey' : 'ctrlKey'];
+				self.isShiftDown = e.shiftKey;
+			});
+	
+			$document.on('keyup' + eventNS, function(e) {
+				if (e.keyCode === KEY_CTRL) self.isCtrlDown = false;
+				if (e.keyCode === KEY_SHIFT) self.isShiftDown = false;
+				if (e.keyCode === KEY_CMD) self.isCmdDown = false;
+			});
+	
+			$document.on('mousedown' + eventNS, function(e) {
+				if (self.isFocused) {
+					// prevent events on the dropdown scrollbar from causing the control to blur
+					if (e.target === self.$dropdown[0] || e.target.parentNode === self.$dropdown[0]) {
+						return false;
+					}
+					// blur on click outside
+					if (!self.$control.has(e.target).length && e.target !== self.$control[0]) {
+						self.blur(e.target);
+					}
+				}
+			});
+	
+			$window.on(['scroll' + eventNS, 'resize' + eventNS].join(' '), function() {
+				if (self.isOpen) {
+					self.positionDropdown.apply(self, arguments);
+				}
+			});
+			$window.on('mousemove' + eventNS, function() {
+				self.ignoreHover = false;
+			});
+	
+			// store original children and tab index so that they can be
+			// restored when the destroy() method is called.
+			this.revertSettings = {
+				$children : $input.children().detach(),
+				tabindex  : $input.attr('tabindex')
+			};
+	
+			$input.attr('tabindex', -1).hide().after(self.$wrapper);
+	
+			if ($.isArray(settings.items)) {
+				self.setValue(settings.items);
+				delete settings.items;
+			}
+	
+			// feature detect for the validation API
+			if (SUPPORTS_VALIDITY_API) {
+				$input.on('invalid' + eventNS, function(e) {
+					e.preventDefault();
+					self.isInvalid = true;
+					self.refreshState();
+				});
+			}
+	
+			self.updateOriginalInput();
+			self.refreshItems();
+			self.refreshState();
+			self.updatePlaceholder();
+			self.isSetup = true;
+	
+			if ($input.is(':disabled')) {
+				self.disable();
+			}
+	
+			self.on('change', this.onChange);
+	
+			$input.data('selectize', self);
+			$input.addClass('selectized');
+			self.trigger('initialize');
+	
+			// preload options
+			if (settings.preload === true) {
+				self.onSearchChange('');
+			}
+	
+		},
+	
+		/**
+		 * Sets up default rendering functions.
+		 */
+		setupTemplates: function() {
+			var self = this;
+			var field_label = self.settings.labelField;
+			var field_optgroup = self.settings.optgroupLabelField;
+	
+			var templates = {
+				'optgroup': function(data) {
+					return '<div class="optgroup">' + data.html + '</div>';
+				},
+				'optgroup_header': function(data, escape) {
+					return '<div class="optgroup-header">' + escape(data[field_optgroup]) + '</div>';
+				},
+				'option': function(data, escape) {
+					return '<div class="option">' + escape(data[field_label]) + '</div>';
+				},
+				'item': function(data, escape) {
+					return '<div class="item">' + escape(data[field_label]) + '</div>';
+				},
+				'option_create': function(data, escape) {
+					return '<div class="create">Add <strong>' + escape(data.input) + '</strong>&hellip;</div>';
+				}
+			};
+	
+			self.settings.render = $.extend({}, templates, self.settings.render);
+		},
+	
+		/**
+		 * Maps fired events to callbacks provided
+		 * in the settings used when creating the control.
+		 */
+		setupCallbacks: function() {
+			var key, fn, callbacks = {
+				'initialize'      : 'onInitialize',
+				'change'          : 'onChange',
+				'item_add'        : 'onItemAdd',
+				'item_remove'     : 'onItemRemove',
+				'clear'           : 'onClear',
+				'option_add'      : 'onOptionAdd',
+				'option_remove'   : 'onOptionRemove',
+				'option_clear'    : 'onOptionClear',
+				'optgroup_add'    : 'onOptionGroupAdd',
+				'optgroup_remove' : 'onOptionGroupRemove',
+				'optgroup_clear'  : 'onOptionGroupClear',
+				'dropdown_open'   : 'onDropdownOpen',
+				'dropdown_close'  : 'onDropdownClose',
+				'type'            : 'onType',
+				'load'            : 'onLoad',
+				'focus'           : 'onFocus',
+				'blur'            : 'onBlur'
+			};
+	
+			for (key in callbacks) {
+				if (callbacks.hasOwnProperty(key)) {
+					fn = this.settings[callbacks[key]];
+					if (fn) this.on(key, fn);
+				}
+			}
+		},
+	
+		/**
+		 * Triggered when the main control element
+		 * has a click event.
+		 *
+		 * @param {object} e
+		 * @return {boolean}
+		 */
+		onClick: function(e) {
+			var self = this;
+	
+			// necessary for mobile webkit devices (manual focus triggering
+			// is ignored unless invoked within a click event)
+			if (!self.isFocused) {
+				self.focus();
+				e.preventDefault();
+			}
+		},
+	
+		/**
+		 * Triggered when the main control element
+		 * has a mouse down event.
+		 *
+		 * @param {object} e
+		 * @return {boolean}
+		 */
+		onMouseDown: function(e) {
+			var self = this;
+			var defaultPrevented = e.isDefaultPrevented();
+			var $target = $(e.target);
+	
+			if (self.isFocused) {
+				// retain focus by preventing native handling. if the
+				// event target is the input it should not be modified.
+				// otherwise, text selection within the input won't work.
+				if (e.target !== self.$control_input[0]) {
+					if (self.settings.mode === 'single') {
+						// toggle dropdown
+						self.isOpen ? self.close() : self.open();
+					} else if (!defaultPrevented) {
+						self.setActiveItem(null);
+					}
+					return false;
+				}
+			} else {
+				// give control focus
+				if (!defaultPrevented) {
+					window.setTimeout(function() {
+						self.focus();
+					}, 0);
+				}
+			}
+		},
+	
+		/**
+		 * Triggered when the value of the control has been changed.
+		 * This should propagate the event to the original DOM
+		 * input / select element.
+		 */
+		onChange: function() {
+			this.$input.trigger('change');
+		},
+	
+		/**
+		 * Triggered on <input> paste.
+		 *
+		 * @param {object} e
+		 * @returns {boolean}
+		 */
+		onPaste: function(e) {
+			var self = this;
+			if (self.isFull() || self.isInputHidden || self.isLocked) {
+				e.preventDefault();
+			} else {
+				// If a regex or string is included, this will split the pasted
+				// input and create Items for each separate value
+				if (self.settings.splitOn) {
+					setTimeout(function() {
+						var splitInput = $.trim(self.$control_input.val() || '').split(self.settings.splitOn);
+						for (var i = 0, n = splitInput.length; i < n; i++) {
+							self.createItem(splitInput[i]);
+						}
+					}, 0);
+				}
+			}
+		},
+	
+		/**
+		 * Triggered on <input> keypress.
+		 *
+		 * @param {object} e
+		 * @returns {boolean}
+		 */
+		onKeyPress: function(e) {
+			if (this.isLocked) return e && e.preventDefault();
+			var character = String.fromCharCode(e.keyCode || e.which);
+			if (this.settings.create && this.settings.mode === 'multi' && character === this.settings.delimiter) {
+				this.createItem();
+				e.preventDefault();
+				return false;
+			}
+		},
+	
+		/**
+		 * Triggered on <input> keydown.
+		 *
+		 * @param {object} e
+		 * @returns {boolean}
+		 */
+		onKeyDown: function(e) {
+			var isInput = e.target === this.$control_input[0];
+			var self = this;
+	
+			if (self.isLocked) {
+				if (e.keyCode !== KEY_TAB) {
+					e.preventDefault();
+				}
+				return;
+			}
+	
+			switch (e.keyCode) {
+				case KEY_A:
+					if (self.isCmdDown) {
+						self.selectAll();
+						return;
+					}
+					break;
+				case KEY_ESC:
+					if (self.isOpen) {
+						e.preventDefault();
+						e.stopPropagation();
+						self.close();
+					}
+					return;
+				case KEY_N:
+					if (!e.ctrlKey || e.altKey) break;
+				case KEY_DOWN:
+					if (!self.isOpen && self.hasOptions) {
+						self.open();
+					} else if (self.$activeOption) {
+						self.ignoreHover = true;
+						var $next = self.getAdjacentOption(self.$activeOption, 1);
+						if ($next.length) self.setActiveOption($next, true, true);
+					}
+					e.preventDefault();
+					return;
+				case KEY_P:
+					if (!e.ctrlKey || e.altKey) break;
+				case KEY_UP:
+					if (self.$activeOption) {
+						self.ignoreHover = true;
+						var $prev = self.getAdjacentOption(self.$activeOption, -1);
+						if ($prev.length) self.setActiveOption($prev, true, true);
+					}
+					e.preventDefault();
+					return;
+				case KEY_RETURN:
+					if (self.isOpen && self.$activeOption) {
+						self.onOptionSelect({currentTarget: self.$activeOption});
+						e.preventDefault();
+					}
+					return;
+				case KEY_LEFT:
+					self.advanceSelection(-1, e);
+					return;
+				case KEY_RIGHT:
+					self.advanceSelection(1, e);
+					return;
+				case KEY_TAB:
+					if (self.settings.selectOnTab && self.isOpen && self.$activeOption) {
+						self.onOptionSelect({currentTarget: self.$activeOption});
+	
+						// Default behaviour is to jump to the next field, we only want this
+						// if the current field doesn't accept any more entries
+						if (!self.isFull()) {
+							e.preventDefault();
+						}
+					}
+					if (self.settings.create && self.createItem()) {
+						e.preventDefault();
+					}
+					return;
+				case KEY_BACKSPACE:
+				case KEY_DELETE:
+					self.deleteSelection(e);
+					return;
+			}
+	
+			if ((self.isFull() || self.isInputHidden) && !(IS_MAC ? e.metaKey : e.ctrlKey)) {
+				e.preventDefault();
+				return;
+			}
+		},
+	
+		/**
+		 * Triggered on <input> keyup.
+		 *
+		 * @param {object} e
+		 * @returns {boolean}
+		 */
+		onKeyUp: function(e) {
+			var self = this;
+	
+			if (self.isLocked) return e && e.preventDefault();
+			var value = self.$control_input.val() || '';
+			if (self.lastValue !== value) {
+				self.lastValue = value;
+				self.onSearchChange(value);
+				self.refreshOptions();
+				self.trigger('type', value);
+			}
+		},
+	
+		/**
+		 * Invokes the user-provide option provider / loader.
+		 *
+		 * Note: this function is debounced in the Selectize
+		 * constructor (by `settings.loadDelay` milliseconds)
+		 *
+		 * @param {string} value
+		 */
+		onSearchChange: function(value) {
+			var self = this;
+			var fn = self.settings.load;
+			if (!fn) return;
+			if (self.loadedSearches.hasOwnProperty(value)) return;
+			self.loadedSearches[value] = true;
+			self.load(function(callback) {
+				fn.apply(self, [value, callback]);
+			});
+		},
+	
+		/**
+		 * Triggered on <input> focus.
+		 *
+		 * @param {object} e (optional)
+		 * @returns {boolean}
+		 */
+		onFocus: function(e) {
+			var self = this;
+			var wasFocused = self.isFocused;
+	
+			if (self.isDisabled) {
+				self.blur();
+				e && e.preventDefault();
+				return false;
+			}
+	
+			if (self.ignoreFocus) return;
+			self.isFocused = true;
+			if (self.settings.preload === 'focus') self.onSearchChange('');
+	
+			if (!wasFocused) self.trigger('focus');
+	
+			if (!self.$activeItems.length) {
+				self.showInput();
+				self.setActiveItem(null);
+				self.refreshOptions(!!self.settings.openOnFocus);
+			}
+	
+			self.refreshState();
+		},
+	
+		/**
+		 * Triggered on <input> blur.
+		 *
+		 * @param {object} e
+		 * @param {Element} dest
+		 */
+		onBlur: function(e, dest) {
+			var self = this;
+			if (!self.isFocused) return;
+			self.isFocused = false;
+	
+			if (self.ignoreFocus) {
+				return;
+			} else if (!self.ignoreBlur && document.activeElement === self.$dropdown_content[0]) {
+				// necessary to prevent IE closing the dropdown when the scrollbar is clicked
+				self.ignoreBlur = true;
+				self.onFocus(e);
+				return;
+			}
+	
+			var deactivate = function() {
+				self.close();
+				self.setTextboxValue('');
+				self.setActiveItem(null);
+				self.setActiveOption(null);
+				self.setCaret(self.items.length);
+				self.refreshState();
+	
+				// IE11 bug: element still marked as active
+				(dest || document.body).focus();
+	
+				self.ignoreFocus = false;
+				self.trigger('blur');
+			};
+	
+			self.ignoreFocus = true;
+			if (self.settings.create && self.settings.createOnBlur) {
+				self.createItem(null, false, deactivate);
+			} else {
+				deactivate();
+			}
+		},
+	
+		/**
+		 * Triggered when the user rolls over
+		 * an option in the autocomplete dropdown menu.
+		 *
+		 * @param {object} e
+		 * @returns {boolean}
+		 */
+		onOptionHover: function(e) {
+			if (this.ignoreHover) return;
+			this.setActiveOption(e.currentTarget, false);
+		},
+	
+		/**
+		 * Triggered when the user clicks on an option
+		 * in the autocomplete dropdown menu.
+		 *
+		 * @param {object} e
+		 * @returns {boolean}
+		 */
+		onOptionSelect: function(e) {
+			var value, $target, $option, self = this;
+	
+			if (e.preventDefault) {
+				e.preventDefault();
+				e.stopPropagation();
+			}
+	
+			$target = $(e.currentTarget);
+			if ($target.hasClass('create')) {
+				self.createItem(null, function() {
+					if (self.settings.closeAfterSelect) {
+						self.close();
+					}
+				});
+			} else {
+				value = $target.attr('data-value');
+				if (typeof value !== 'undefined') {
+					self.lastQuery = null;
+					self.setTextboxValue('');
+					self.addItem(value);
+					if (self.settings.closeAfterSelect) {
+						self.close();
+					} else if (!self.settings.hideSelected && e.type && /mouse/.test(e.type)) {
+						self.setActiveOption(self.getOption(value));
+					}
+				}
+			}
+		},
+	
+		/**
+		 * Triggered when the user clicks on an item
+		 * that has been selected.
+		 *
+		 * @param {object} e
+		 * @returns {boolean}
+		 */
+		onItemSelect: function(e) {
+			var self = this;
+	
+			if (self.isLocked) return;
+			if (self.settings.mode === 'multi') {
+				e.preventDefault();
+				self.setActiveItem(e.currentTarget, e);
+			}
+		},
+	
+		/**
+		 * Invokes the provided method that provides
+		 * results to a callback---which are then added
+		 * as options to the control.
+		 *
+		 * @param {function} fn
+		 */
+		load: function(fn) {
+			var self = this;
+			var $wrapper = self.$wrapper.addClass(self.settings.loadingClass);
+	
+			self.loading++;
+			fn.apply(self, [function(results) {
+				self.loading = Math.max(self.loading - 1, 0);
+				if (results && results.length) {
+					self.addOption(results);
+					self.refreshOptions(self.isFocused && !self.isInputHidden);
+				}
+				if (!self.loading) {
+					$wrapper.removeClass(self.settings.loadingClass);
+				}
+				self.trigger('load', results);
+			}]);
+		},
+	
+		/**
+		 * Sets the input field of the control to the specified value.
+		 *
+		 * @param {string} value
+		 */
+		setTextboxValue: function(value) {
+			var $input = this.$control_input;
+			var changed = $input.val() !== value;
+			if (changed) {
+				$input.val(value).triggerHandler('update');
+				this.lastValue = value;
+			}
+		},
+	
+		/**
+		 * Returns the value of the control. If multiple items
+		 * can be selected (e.g. <select multiple>), this returns
+		 * an array. If only one item can be selected, this
+		 * returns a string.
+		 *
+		 * @returns {mixed}
+		 */
+		getValue: function() {
+			if (this.tagType === TAG_SELECT && this.$input.attr('multiple')) {
+				return this.items;
+			} else {
+				return this.items.join(this.settings.delimiter);
+			}
+		},
+	
+		/**
+		 * Resets the selected items to the given value.
+		 *
+		 * @param {mixed} value
+		 */
+		setValue: function(value, silent) {
+			var events = silent ? [] : ['change'];
+	
+			debounce_events(this, events, function() {
+				this.clear(silent);
+				this.addItems(value, silent);
+			});
+		},
+	
+		/**
+		 * Sets the selected item.
+		 *
+		 * @param {object} $item
+		 * @param {object} e (optional)
+		 */
+		setActiveItem: function($item, e) {
+			var self = this;
+			var eventName;
+			var i, idx, begin, end, item, swap;
+			var $last;
+	
+			if (self.settings.mode === 'single') return;
+			$item = $($item);
+	
+			// clear the active selection
+			if (!$item.length) {
+				$(self.$activeItems).removeClass('active');
+				self.$activeItems = [];
+				if (self.isFocused) {
+					self.showInput();
+				}
+				return;
+			}
+	
+			// modify selection
+			eventName = e && e.type.toLowerCase();
+	
+			if (eventName === 'mousedown' && self.isShiftDown && self.$activeItems.length) {
+				$last = self.$control.children('.active:last');
+				begin = Array.prototype.indexOf.apply(self.$control[0].childNodes, [$last[0]]);
+				end   = Array.prototype.indexOf.apply(self.$control[0].childNodes, [$item[0]]);
+				if (begin > end) {
+					swap  = begin;
+					begin = end;
+					end   = swap;
+				}
+				for (i = begin; i <= end; i++) {
+					item = self.$control[0].childNodes[i];
+					if (self.$activeItems.indexOf(item) === -1) {
+						$(item).addClass('active');
+						self.$activeItems.push(item);
+					}
+				}
+				e.preventDefault();
+			} else if ((eventName === 'mousedown' && self.isCtrlDown) || (eventName === 'keydown' && this.isShiftDown)) {
+				if ($item.hasClass('active')) {
+					idx = self.$activeItems.indexOf($item[0]);
+					self.$activeItems.splice(idx, 1);
+					$item.removeClass('active');
+				} else {
+					self.$activeItems.push($item.addClass('active')[0]);
+				}
+			} else {
+				$(self.$activeItems).removeClass('active');
+				self.$activeItems = [$item.addClass('active')[0]];
+			}
+	
+			// ensure control has focus
+			self.hideInput();
+			if (!this.isFocused) {
+				self.focus();
+			}
+		},
+	
+		/**
+		 * Sets the selected item in the dropdown menu
+		 * of available options.
+		 *
+		 * @param {object} $object
+		 * @param {boolean} scroll
+		 * @param {boolean} animate
+		 */
+		setActiveOption: function($option, scroll, animate) {
+			var height_menu, height_item, y;
+			var scroll_top, scroll_bottom;
+			var self = this;
+	
+			if (self.$activeOption) self.$activeOption.removeClass('active');
+			self.$activeOption = null;
+	
+			$option = $($option);
+			if (!$option.length) return;
+	
+			self.$activeOption = $option.addClass('active');
+	
+			if (scroll || !isset(scroll)) {
+	
+				height_menu   = self.$dropdown_content.height();
+				height_item   = self.$activeOption.outerHeight(true);
+				scroll        = self.$dropdown_content.scrollTop() || 0;
+				y             = self.$activeOption.offset().top - self.$dropdown_content.offset().top + scroll;
+				scroll_top    = y;
+				scroll_bottom = y - height_menu + height_item;
+	
+				if (y + height_item > height_menu + scroll) {
+					self.$dropdown_content.stop().animate({scrollTop: scroll_bottom}, animate ? self.settings.scrollDuration : 0);
+				} else if (y < scroll) {
+					self.$dropdown_content.stop().animate({scrollTop: scroll_top}, animate ? self.settings.scrollDuration : 0);
+				}
+	
+			}
+		},
+	
+		/**
+		 * Selects all items (CTRL + A).
+		 */
+		selectAll: function() {
+			var self = this;
+			if (self.settings.mode === 'single') return;
+	
+			self.$activeItems = Array.prototype.slice.apply(self.$control.children(':not(input)').addClass('active'));
+			if (self.$activeItems.length) {
+				self.hideInput();
+				self.close();
+			}
+			self.focus();
+		},
+	
+		/**
+		 * Hides the input element out of view, while
+		 * retaining its focus.
+		 */
+		hideInput: function() {
+			var self = this;
+	
+			self.setTextboxValue('');
+			self.$control_input.css({opacity: 0, position: 'absolute', left: self.rtl ? 10000 : -10000});
+			self.isInputHidden = true;
+		},
+	
+		/**
+		 * Restores input visibility.
+		 */
+		showInput: function() {
+			this.$control_input.css({opacity: 1, position: 'relative', left: 0});
+			this.isInputHidden = false;
+		},
+	
+		/**
+		 * Gives the control focus.
+		 */
+		focus: function() {
+			var self = this;
+			if (self.isDisabled) return;
+	
+			self.ignoreFocus = true;
+			self.$control_input[0].focus();
+			window.setTimeout(function() {
+				self.ignoreFocus = false;
+				self.onFocus();
+			}, 0);
+		},
+	
+		/**
+		 * Forces the control out of focus.
+		 *
+		 * @param {Element} dest
+		 */
+		blur: function(dest) {
+			this.$control_input[0].blur();
+			this.onBlur(null, dest);
+		},
+	
+		/**
+		 * Returns a function that scores an object
+		 * to show how good of a match it is to the
+		 * provided query.
+		 *
+		 * @param {string} query
+		 * @param {object} options
+		 * @return {function}
+		 */
+		getScoreFunction: function(query) {
+			return this.sifter.getScoreFunction(query, this.getSearchOptions());
+		},
+	
+		/**
+		 * Returns search options for sifter (the system
+		 * for scoring and sorting results).
+		 *
+		 * @see https://github.com/brianreavis/sifter.js
+		 * @return {object}
+		 */
+		getSearchOptions: function() {
+			var settings = this.settings;
+			var sort = settings.sortField;
+			if (typeof sort === 'string') {
+				sort = [{field: sort}];
+			}
+	
+			return {
+				fields      : settings.searchField,
+				conjunction : settings.searchConjunction,
+				sort        : sort
+			};
+		},
+	
+		/**
+		 * Searches through available options and returns
+		 * a sorted array of matches.
+		 *
+		 * Returns an object containing:
+		 *
+		 *   - query {string}
+		 *   - tokens {array}
+		 *   - total {int}
+		 *   - items {array}
+		 *
+		 * @param {string} query
+		 * @returns {object}
+		 */
+		search: function(query) {
+			var i, value, score, result, calculateScore;
+			var self     = this;
+			var settings = self.settings;
+			var options  = this.getSearchOptions();
+	
+			// validate user-provided result scoring function
+			if (settings.score) {
+				calculateScore = self.settings.score.apply(this, [query]);
+				if (typeof calculateScore !== 'function') {
+					throw new Error('Selectize "score" setting must be a function that returns a function');
+				}
+			}
+	
+			// perform search
+			if (query !== self.lastQuery) {
+				self.lastQuery = query;
+				result = self.sifter.search(query, $.extend(options, {score: calculateScore}));
+				self.currentResults = result;
+			} else {
+				result = $.extend(true, {}, self.currentResults);
+			}
+	
+			// filter out selected items
+			if (settings.hideSelected) {
+				for (i = result.items.length - 1; i >= 0; i--) {
+					if (self.items.indexOf(hash_key(result.items[i].id)) !== -1) {
+						result.items.splice(i, 1);
+					}
+				}
+			}
+	
+			return result;
+		},
+	
+		/**
+		 * Refreshes the list of available options shown
+		 * in the autocomplete dropdown menu.
+		 *
+		 * @param {boolean} triggerDropdown
+		 */
+		refreshOptions: function(triggerDropdown) {
+			var i, j, k, n, groups, groups_order, option, option_html, optgroup, optgroups, html, html_children, has_create_option;
+			var $active, $active_before, $create;
+	
+			if (typeof triggerDropdown === 'undefined') {
+				triggerDropdown = true;
+			}
+	
+			var self              = this;
+			var query             = $.trim(self.$control_input.val());
+			var results           = self.search(query);
+			var $dropdown_content = self.$dropdown_content;
+			var active_before     = self.$activeOption && hash_key(self.$activeOption.attr('data-value'));
+	
+			// build markup
+			n = results.items.length;
+			if (typeof self.settings.maxOptions === 'number') {
+				n = Math.min(n, self.settings.maxOptions);
+			}
+	
+			// render and group available options individually
+			groups = {};
+			groups_order = [];
+	
+			for (i = 0; i < n; i++) {
+				option      = self.options[results.items[i].id];
+				option_html = self.render('option', option);
+				optgroup    = option[self.settings.optgroupField] || '';
+				optgroups   = $.isArray(optgroup) ? optgroup : [optgroup];
+	
+				for (j = 0, k = optgroups && optgroups.length; j < k; j++) {
+					optgroup = optgroups[j];
+					if (!self.optgroups.hasOwnProperty(optgroup)) {
+						optgroup = '';
+					}
+					if (!groups.hasOwnProperty(optgroup)) {
+						groups[optgroup] = [];
+						groups_order.push(optgroup);
+					}
+					groups[optgroup].push(option_html);
+				}
+			}
+	
+			// sort optgroups
+			if (this.settings.lockOptgroupOrder) {
+				groups_order.sort(function(a, b) {
+					var a_order = self.optgroups[a].$order || 0;
+					var b_order = self.optgroups[b].$order || 0;
+					return a_order - b_order;
+				});
+			}
+	
+			// render optgroup headers & join groups
+			html = [];
+			for (i = 0, n = groups_order.length; i < n; i++) {
+				optgroup = groups_order[i];
+				if (self.optgroups.hasOwnProperty(optgroup) && groups[optgroup].length) {
+					// render the optgroup header and options within it,
+					// then pass it to the wrapper template
+					html_children = self.render('optgroup_header', self.optgroups[optgroup]) || '';
+					html_children += groups[optgroup].join('');
+					html.push(self.render('optgroup', $.extend({}, self.optgroups[optgroup], {
+						html: html_children
+					})));
+				} else {
+					html.push(groups[optgroup].join(''));
+				}
+			}
+	
+			$dropdown_content.html(html.join(''));
+	
+			// highlight matching terms inline
+			if (self.settings.highlight && results.query.length && results.tokens.length) {
+				for (i = 0, n = results.tokens.length; i < n; i++) {
+					highlight($dropdown_content, results.tokens[i].regex);
+				}
+			}
+	
+			// add "selected" class to selected options
+			if (!self.settings.hideSelected) {
+				for (i = 0, n = self.items.length; i < n; i++) {
+					self.getOption(self.items[i]).addClass('selected');
+				}
+			}
+	
+			// add create option
+			has_create_option = self.canCreate(query);
+			if (has_create_option) {
+				$dropdown_content.prepend(self.render('option_create', {input: query}));
+				$create = $($dropdown_content[0].childNodes[0]);
+			}
+	
+			// activate
+			self.hasOptions = results.items.length > 0 || has_create_option;
+			if (self.hasOptions) {
+				if (results.items.length > 0) {
+					$active_before = active_before && self.getOption(active_before);
+					if ($active_before && $active_before.length) {
+						$active = $active_before;
+					} else if (self.settings.mode === 'single' && self.items.length) {
+						$active = self.getOption(self.items[0]);
+					}
+					if (!$active || !$active.length) {
+						if ($create && !self.settings.addPrecedence) {
+							$active = self.getAdjacentOption($create, 1);
+						} else {
+							$active = $dropdown_content.find('[data-selectable]:first');
+						}
+					}
+				} else {
+					$active = $create;
+				}
+				self.setActiveOption($active);
+				if (triggerDropdown && !self.isOpen) { self.open(); }
+			} else {
+				self.setActiveOption(null);
+				if (triggerDropdown && self.isOpen) { self.close(); }
+			}
+		},
+	
+		/**
+		 * Adds an available option. If it already exists,
+		 * nothing will happen. Note: this does not refresh
+		 * the options list dropdown (use `refreshOptions`
+		 * for that).
+		 *
+		 * Usage:
+		 *
+		 *   this.addOption(data)
+		 *
+		 * @param {object|array} data
+		 */
+		addOption: function(data) {
+			var i, n, value, self = this;
+	
+			if ($.isArray(data)) {
+				for (i = 0, n = data.length; i < n; i++) {
+					self.addOption(data[i]);
+				}
+				return;
+			}
+	
+			if (value = self.registerOption(data)) {
+				self.userOptions[value] = true;
+				self.lastQuery = null;
+				self.trigger('option_add', value, data);
+			}
+		},
+	
+		/**
+		 * Registers an option to the pool of options.
+		 *
+		 * @param {object} data
+		 * @return {boolean|string}
+		 */
+		registerOption: function(data) {
+			var key = hash_key(data[this.settings.valueField]);
+			if (!key || this.options.hasOwnProperty(key)) return false;
+			data.$order = data.$order || ++this.order;
+			this.options[key] = data;
+			return key;
+		},
+	
+		/**
+		 * Registers an option group to the pool of option groups.
+		 *
+		 * @param {object} data
+		 * @return {boolean|string}
+		 */
+		registerOptionGroup: function(data) {
+			var key = hash_key(data[this.settings.optgroupValueField]);
+			if (!key) return false;
+	
+			data.$order = data.$order || ++this.order;
+			this.optgroups[key] = data;
+			return key;
+		},
+	
+		/**
+		 * Registers a new optgroup for options
+		 * to be bucketed into.
+		 *
+		 * @param {string} id
+		 * @param {object} data
+		 */
+		addOptionGroup: function(id, data) {
+			data[this.settings.optgroupValueField] = id;
+			if (id = this.registerOptionGroup(data)) {
+				this.trigger('optgroup_add', id, data);
+			}
+		},
+	
+		/**
+		 * Removes an existing option group.
+		 *
+		 * @param {string} id
+		 */
+		removeOptionGroup: function(id) {
+			if (this.optgroups.hasOwnProperty(id)) {
+				delete this.optgroups[id];
+				this.renderCache = {};
+				this.trigger('optgroup_remove', id);
+			}
+		},
+	
+		/**
+		 * Clears all existing option groups.
+		 */
+		clearOptionGroups: function() {
+			this.optgroups = {};
+			this.renderCache = {};
+			this.trigger('optgroup_clear');
+		},
+	
+		/**
+		 * Updates an option available for selection. If
+		 * it is visible in the selected items or options
+		 * dropdown, it will be re-rendered automatically.
+		 *
+		 * @param {string} value
+		 * @param {object} data
+		 */
+		updateOption: function(value, data) {
+			var self = this;
+			var $item, $item_new;
+			var value_new, index_item, cache_items, cache_options, order_old;
+	
+			value     = hash_key(value);
+			value_new = hash_key(data[self.settings.valueField]);
+	
+			// sanity checks
+			if (value === null) return;
+			if (!self.options.hasOwnProperty(value)) return;
+			if (typeof value_new !== 'string') throw new Error('Value must be set in option data');
+	
+			order_old = self.options[value].$order;
+	
+			// update references
+			if (value_new !== value) {
+				delete self.options[value];
+				index_item = self.items.indexOf(value);
+				if (index_item !== -1) {
+					self.items.splice(index_item, 1, value_new);
+				}
+			}
+			data.$order = data.$order || order_old;
+			self.options[value_new] = data;
+	
+			// invalidate render cache
+			cache_items = self.renderCache['item'];
+			cache_options = self.renderCache['option'];
+	
+			if (cache_items) {
+				delete cache_items[value];
+				delete cache_items[value_new];
+			}
+			if (cache_options) {
+				delete cache_options[value];
+				delete cache_options[value_new];
+			}
+	
+			// update the item if it's selected
+			if (self.items.indexOf(value_new) !== -1) {
+				$item = self.getItem(value);
+				$item_new = $(self.render('item', data));
+				if ($item.hasClass('active')) $item_new.addClass('active');
+				$item.replaceWith($item_new);
+			}
+	
+			// invalidate last query because we might have updated the sortField
+			self.lastQuery = null;
+	
+			// update dropdown contents
+			if (self.isOpen) {
+				self.refreshOptions(false);
+			}
+		},
+	
+		/**
+		 * Removes a single option.
+		 *
+		 * @param {string} value
+		 * @param {boolean} silent
+		 */
+		removeOption: function(value, silent) {
+			var self = this;
+			value = hash_key(value);
+	
+			var cache_items = self.renderCache['item'];
+			var cache_options = self.renderCache['option'];
+			if (cache_items) delete cache_items[value];
+			if (cache_options) delete cache_options[value];
+	
+			delete self.userOptions[value];
+			delete self.options[value];
+			self.lastQuery = null;
+			self.trigger('option_remove', value);
+			self.removeItem(value, silent);
+		},
+	
+		/**
+		 * Clears all options.
+		 */
+		clearOptions: function() {
+			var self = this;
+	
+			self.loadedSearches = {};
+			self.userOptions = {};
+			self.renderCache = {};
+			self.options = self.sifter.items = {};
+			self.lastQuery = null;
+			self.trigger('option_clear');
+			self.clear();
+		},
+	
+		/**
+		 * Returns the jQuery element of the option
+		 * matching the given value.
+		 *
+		 * @param {string} value
+		 * @returns {object}
+		 */
+		getOption: function(value) {
+			return this.getElementWithValue(value, this.$dropdown_content.find('[data-selectable]'));
+		},
+	
+		/**
+		 * Returns the jQuery element of the next or
+		 * previous selectable option.
+		 *
+		 * @param {object} $option
+		 * @param {int} direction  can be 1 for next or -1 for previous
+		 * @return {object}
+		 */
+		getAdjacentOption: function($option, direction) {
+			var $options = this.$dropdown.find('[data-selectable]');
+			var index    = $options.index($option) + direction;
+	
+			return index >= 0 && index < $options.length ? $options.eq(index) : $();
+		},
+	
+		/**
+		 * Finds the first element with a "data-value" attribute
+		 * that matches the given value.
+		 *
+		 * @param {mixed} value
+		 * @param {object} $els
+		 * @return {object}
+		 */
+		getElementWithValue: function(value, $els) {
+			value = hash_key(value);
+	
+			if (typeof value !== 'undefined' && value !== null) {
+				for (var i = 0, n = $els.length; i < n; i++) {
+					if ($els[i].getAttribute('data-value') === value) {
+						return $($els[i]);
+					}
+				}
+			}
+	
+			return $();
+		},
+	
+		/**
+		 * Returns the jQuery element of the item
+		 * matching the given value.
+		 *
+		 * @param {string} value
+		 * @returns {object}
+		 */
+		getItem: function(value) {
+			return this.getElementWithValue(value, this.$control.children());
+		},
+	
+		/**
+		 * "Selects" multiple items at once. Adds them to the list
+		 * at the current caret position.
+		 *
+		 * @param {string} value
+		 * @param {boolean} silent
+		 */
+		addItems: function(values, silent) {
+			var items = $.isArray(values) ? values : [values];
+			for (var i = 0, n = items.length; i < n; i++) {
+				this.isPending = (i < n - 1);
+				this.addItem(items[i], silent);
+			}
+		},
+	
+		/**
+		 * "Selects" an item. Adds it to the list
+		 * at the current caret position.
+		 *
+		 * @param {string} value
+		 * @param {boolean} silent
+		 */
+		addItem: function(value, silent) {
+			var events = silent ? [] : ['change'];
+	
+			debounce_events(this, events, function() {
+				var $item, $option, $options;
+				var self = this;
+				var inputMode = self.settings.mode;
+				var i, active, value_next, wasFull;
+				value = hash_key(value);
+	
+				if (self.items.indexOf(value) !== -1) {
+					if (inputMode === 'single') self.close();
+					return;
+				}
+	
+				if (!self.options.hasOwnProperty(value)) return;
+				if (inputMode === 'single') self.clear(silent);
+				if (inputMode === 'multi' && self.isFull()) return;
+	
+				$item = $(self.render('item', self.options[value]));
+				wasFull = self.isFull();
+				self.items.splice(self.caretPos, 0, value);
+				self.insertAtCaret($item);
+				if (!self.isPending || (!wasFull && self.isFull())) {
+					self.refreshState();
+				}
+	
+				if (self.isSetup) {
+					$options = self.$dropdown_content.find('[data-selectable]');
+	
+					// update menu / remove the option (if this is not one item being added as part of series)
+					if (!self.isPending) {
+						$option = self.getOption(value);
+						value_next = self.getAdjacentOption($option, 1).attr('data-value');
+						self.refreshOptions(self.isFocused && inputMode !== 'single');
+						if (value_next) {
+							self.setActiveOption(self.getOption(value_next));
+						}
+					}
+	
+					// hide the menu if the maximum number of items have been selected or no options are left
+					if (!$options.length || self.isFull()) {
+						self.close();
+					} else {
+						self.positionDropdown();
+					}
+	
+					self.updatePlaceholder();
+					self.trigger('item_add', value, $item);
+					self.updateOriginalInput({silent: silent});
+				}
+			});
+		},
+	
+		/**
+		 * Removes the selected item matching
+		 * the provided value.
+		 *
+		 * @param {string} value
+		 */
+		removeItem: function(value, silent) {
+			var self = this;
+			var $item, i, idx;
+	
+			$item = (typeof value === 'object') ? value : self.getItem(value);
+			value = hash_key($item.attr('data-value'));
+			i = self.items.indexOf(value);
+	
+			if (i !== -1) {
+				$item.remove();
+				if ($item.hasClass('active')) {
+					idx = self.$activeItems.indexOf($item[0]);
+					self.$activeItems.splice(idx, 1);
+				}
+	
+				self.items.splice(i, 1);
+				self.lastQuery = null;
+				if (!self.settings.persist && self.userOptions.hasOwnProperty(value)) {
+					self.removeOption(value, silent);
+				}
+	
+				if (i < self.caretPos) {
+					self.setCaret(self.caretPos - 1);
+				}
+	
+				self.refreshState();
+				self.updatePlaceholder();
+				self.updateOriginalInput({silent: silent});
+				self.positionDropdown();
+				self.trigger('item_remove', value, $item);
+			}
+		},
+	
+		/**
+		 * Invokes the `create` method provided in the
+		 * selectize options that should provide the data
+		 * for the new item, given the user input.
+		 *
+		 * Once this completes, it will be added
+		 * to the item list.
+		 *
+		 * @param {string} value
+		 * @param {boolean} [triggerDropdown]
+		 * @param {function} [callback]
+		 * @return {boolean}
+		 */
+		createItem: function(input, triggerDropdown) {
+			var self  = this;
+			var caret = self.caretPos;
+			input = input || $.trim(self.$control_input.val() || '');
+	
+			var callback = arguments[arguments.length - 1];
+			if (typeof callback !== 'function') callback = function() {};
+	
+			if (typeof triggerDropdown !== 'boolean') {
+				triggerDropdown = true;
+			}
+	
+			if (!self.canCreate(input)) {
+				callback();
+				return false;
+			}
+	
+			self.lock();
+	
+			var setup = (typeof self.settings.create === 'function') ? this.settings.create : function(input) {
+				var data = {};
+				data[self.settings.labelField] = input;
+				data[self.settings.valueField] = input;
+				return data;
+			};
+	
+			var create = once(function(data) {
+				self.unlock();
+	
+				if (!data || typeof data !== 'object') return callback();
+				var value = hash_key(data[self.settings.valueField]);
+				if (typeof value !== 'string') return callback();
+	
+				self.setTextboxValue('');
+				self.addOption(data);
+				self.setCaret(caret);
+				self.addItem(value);
+				self.refreshOptions(triggerDropdown && self.settings.mode !== 'single');
+				callback(data);
+			});
+	
+			var output = setup.apply(this, [input, create]);
+			if (typeof output !== 'undefined') {
+				create(output);
+			}
+	
+			return true;
+		},
+	
+		/**
+		 * Re-renders the selected item lists.
+		 */
+		refreshItems: function() {
+			this.lastQuery = null;
+	
+			if (this.isSetup) {
+				this.addItem(this.items);
+			}
+	
+			this.refreshState();
+			this.updateOriginalInput();
+		},
+	
+		/**
+		 * Updates all state-dependent attributes
+		 * and CSS classes.
+		 */
+		refreshState: function() {
+			var invalid, self = this;
+			if (self.isRequired) {
+				if (self.items.length) self.isInvalid = false;
+				self.$control_input.prop('required', invalid);
+			}
+			self.refreshClasses();
+		},
+	
+		/**
+		 * Updates all state-dependent CSS classes.
+		 */
+		refreshClasses: function() {
+			var self     = this;
+			var isFull   = self.isFull();
+			var isLocked = self.isLocked;
+	
+			self.$wrapper
+				.toggleClass('rtl', self.rtl);
+	
+			self.$control
+				.toggleClass('focus', self.isFocused)
+				.toggleClass('disabled', self.isDisabled)
+				.toggleClass('required', self.isRequired)
+				.toggleClass('invalid', self.isInvalid)
+				.toggleClass('locked', isLocked)
+				.toggleClass('full', isFull).toggleClass('not-full', !isFull)
+				.toggleClass('input-active', self.isFocused && !self.isInputHidden)
+				.toggleClass('dropdown-active', self.isOpen)
+				.toggleClass('has-options', !$.isEmptyObject(self.options))
+				.toggleClass('has-items', self.items.length > 0);
+	
+			self.$control_input.data('grow', !isFull && !isLocked);
+		},
+	
+		/**
+		 * Determines whether or not more items can be added
+		 * to the control without exceeding the user-defined maximum.
+		 *
+		 * @returns {boolean}
+		 */
+		isFull: function() {
+			return this.settings.maxItems !== null && this.items.length >= this.settings.maxItems;
+		},
+	
+		/**
+		 * Refreshes the original <select> or <input>
+		 * element to reflect the current state.
+		 */
+		updateOriginalInput: function(opts) {
+			var i, n, options, label, self = this;
+			opts = opts || {};
+	
+			if (self.tagType === TAG_SELECT) {
+				options = [];
+				for (i = 0, n = self.items.length; i < n; i++) {
+					label = self.options[self.items[i]][self.settings.labelField] || '';
+					options.push('<option value="' + escape_html(self.items[i]) + '" selected="selected">' + escape_html(label) + '</option>');
+				}
+				if (!options.length && !this.$input.attr('multiple')) {
+					options.push('<option value="" selected="selected"></option>');
+				}
+				self.$input.html(options.join(''));
+			} else {
+				self.$input.val(self.getValue());
+				self.$input.attr('value',self.$input.val());
+			}
+	
+			if (self.isSetup) {
+				if (!opts.silent) {
+					self.trigger('change', self.$input.val());
+				}
+			}
+		},
+	
+		/**
+		 * Shows/hide the input placeholder depending
+		 * on if there items in the list already.
+		 */
+		updatePlaceholder: function() {
+			if (!this.settings.placeholder) return;
+			var $input = this.$control_input;
+	
+			if (this.items.length) {
+				$input.removeAttr('placeholder');
+			} else {
+				$input.attr('placeholder', this.settings.placeholder);
+			}
+			$input.triggerHandler('update', {force: true});
+		},
+	
+		/**
+		 * Shows the autocomplete dropdown containing
+		 * the available options.
+		 */
+		open: function() {
+			var self = this;
+	
+			if (self.isLocked || self.isOpen || (self.settings.mode === 'multi' && self.isFull())) return;
+			self.focus();
+			self.isOpen = true;
+			self.refreshState();
+			self.$dropdown.css({visibility: 'hidden', display: 'block'});
+			self.positionDropdown();
+			self.$dropdown.css({visibility: 'visible'});
+			self.trigger('dropdown_open', self.$dropdown);
+		},
+	
+		/**
+		 * Closes the autocomplete dropdown menu.
+		 */
+		close: function() {
+			var self = this;
+			var trigger = self.isOpen;
+	
+			if (self.settings.mode === 'single' && self.items.length) {
+				self.hideInput();
+			}
+	
+			self.isOpen = false;
+			self.$dropdown.hide();
+			self.setActiveOption(null);
+			self.refreshState();
+	
+			if (trigger) self.trigger('dropdown_close', self.$dropdown);
+		},
+	
+		/**
+		 * Calculates and applies the appropriate
+		 * position of the dropdown.
+		 */
+		positionDropdown: function() {
+			var $control = this.$control;
+			var offset = this.settings.dropdownParent === 'body' ? $control.offset() : $control.position();
+			offset.top += $control.outerHeight(true);
+	
+			this.$dropdown.css({
+				width : $control.outerWidth(),
+				top   : offset.top,
+				left  : offset.left
+			});
+		},
+	
+		/**
+		 * Resets / clears all selected items
+		 * from the control.
+		 *
+		 * @param {boolean} silent
+		 */
+		clear: function(silent) {
+			var self = this;
+	
+			if (!self.items.length) return;
+			self.$control.children(':not(input)').remove();
+			self.items = [];
+			self.lastQuery = null;
+			self.setCaret(0);
+			self.setActiveItem(null);
+			self.updatePlaceholder();
+			self.updateOriginalInput({silent: silent});
+			self.refreshState();
+			self.showInput();
+			self.trigger('clear');
+		},
+	
+		/**
+		 * A helper method for inserting an element
+		 * at the current caret position.
+		 *
+		 * @param {object} $el
+		 */
+		insertAtCaret: function($el) {
+			var caret = Math.min(this.caretPos, this.items.length);
+			if (caret === 0) {
+				this.$control.prepend($el);
+			} else {
+				$(this.$control[0].childNodes[caret]).before($el);
+			}
+			this.setCaret(caret + 1);
+		},
+	
+		/**
+		 * Removes the current selected item(s).
+		 *
+		 * @param {object} e (optional)
+		 * @returns {boolean}
+		 */
+		deleteSelection: function(e) {
+			var i, n, direction, selection, values, caret, option_select, $option_select, $tail;
+			var self = this;
+	
+			direction = (e && e.keyCode === KEY_BACKSPACE) ? -1 : 1;
+			selection = getSelection(self.$control_input[0]);
+	
+			if (self.$activeOption && !self.settings.hideSelected) {
+				option_select = self.getAdjacentOption(self.$activeOption, -1).attr('data-value');
+			}
+	
+			// determine items that will be removed
+			values = [];
+	
+			if (self.$activeItems.length) {
+				$tail = self.$control.children('.active:' + (direction > 0 ? 'last' : 'first'));
+				caret = self.$control.children(':not(input)').index($tail);
+				if (direction > 0) { caret++; }
+	
+				for (i = 0, n = self.$activeItems.length; i < n; i++) {
+					values.push($(self.$activeItems[i]).attr('data-value'));
+				}
+				if (e) {
+					e.preventDefault();
+					e.stopPropagation();
+				}
+			} else if ((self.isFocused || self.settings.mode === 'single') && self.items.length) {
+				if (direction < 0 && selection.start === 0 && selection.length === 0) {
+					values.push(self.items[self.caretPos - 1]);
+				} else if (direction > 0 && selection.start === self.$control_input.val().length) {
+					values.push(self.items[self.caretPos]);
+				}
+			}
+	
+			// allow the callback to abort
+			if (!values.length || (typeof self.settings.onDelete === 'function' && self.settings.onDelete.apply(self, [values]) === false)) {
+				return false;
+			}
+	
+			// perform removal
+			if (typeof caret !== 'undefined') {
+				self.setCaret(caret);
+			}
+			while (values.length) {
+				self.removeItem(values.pop());
+			}
+	
+			self.showInput();
+			self.positionDropdown();
+			self.refreshOptions(true);
+	
+			// select previous option
+			if (option_select) {
+				$option_select = self.getOption(option_select);
+				if ($option_select.length) {
+					self.setActiveOption($option_select);
+				}
+			}
+	
+			return true;
+		},
+	
+		/**
+		 * Selects the previous / next item (depending
+		 * on the `direction` argument).
+		 *
+		 * > 0 - right
+		 * < 0 - left
+		 *
+		 * @param {int} direction
+		 * @param {object} e (optional)
+		 */
+		advanceSelection: function(direction, e) {
+			var tail, selection, idx, valueLength, cursorAtEdge, $tail;
+			var self = this;
+	
+			if (direction === 0) return;
+			if (self.rtl) direction *= -1;
+	
+			tail = direction > 0 ? 'last' : 'first';
+			selection = getSelection(self.$control_input[0]);
+	
+			if (self.isFocused && !self.isInputHidden) {
+				valueLength = self.$control_input.val().length;
+				cursorAtEdge = direction < 0
+					? selection.start === 0 && selection.length === 0
+					: selection.start === valueLength;
+	
+				if (cursorAtEdge && !valueLength) {
+					self.advanceCaret(direction, e);
+				}
+			} else {
+				$tail = self.$control.children('.active:' + tail);
+				if ($tail.length) {
+					idx = self.$control.children(':not(input)').index($tail);
+					self.setActiveItem(null);
+					self.setCaret(direction > 0 ? idx + 1 : idx);
+				}
+			}
+		},
+	
+		/**
+		 * Moves the caret left / right.
+		 *
+		 * @param {int} direction
+		 * @param {object} e (optional)
+		 */
+		advanceCaret: function(direction, e) {
+			var self = this, fn, $adj;
+	
+			if (direction === 0) return;
+	
+			fn = direction > 0 ? 'next' : 'prev';
+			if (self.isShiftDown) {
+				$adj = self.$control_input[fn]();
+				if ($adj.length) {
+					self.hideInput();
+					self.setActiveItem($adj);
+					e && e.preventDefault();
+				}
+			} else {
+				self.setCaret(self.caretPos + direction);
+			}
+		},
+	
+		/**
+		 * Moves the caret to the specified index.
+		 *
+		 * @param {int} i
+		 */
+		setCaret: function(i) {
+			var self = this;
+	
+			if (self.settings.mode === 'single') {
+				i = self.items.length;
+			} else {
+				i = Math.max(0, Math.min(self.items.length, i));
+			}
+	
+			if(!self.isPending) {
+				// the input must be moved by leaving it in place and moving the
+				// siblings, due to the fact that focus cannot be restored once lost
+				// on mobile webkit devices
+				var j, n, fn, $children, $child;
+				$children = self.$control.children(':not(input)');
+				for (j = 0, n = $children.length; j < n; j++) {
+					$child = $($children[j]).detach();
+					if (j <  i) {
+						self.$control_input.before($child);
+					} else {
+						self.$control.append($child);
+					}
+				}
+			}
+	
+			self.caretPos = i;
+		},
+	
+		/**
+		 * Disables user input on the control. Used while
+		 * items are being asynchronously created.
+		 */
+		lock: function() {
+			this.close();
+			this.isLocked = true;
+			this.refreshState();
+		},
+	
+		/**
+		 * Re-enables user input on the control.
+		 */
+		unlock: function() {
+			this.isLocked = false;
+			this.refreshState();
+		},
+	
+		/**
+		 * Disables user input on the control completely.
+		 * While disabled, it cannot receive focus.
+		 */
+		disable: function() {
+			var self = this;
+			self.$input.prop('disabled', true);
+			self.$control_input.prop('disabled', true).prop('tabindex', -1);
+			self.isDisabled = true;
+			self.lock();
+		},
+	
+		/**
+		 * Enables the control so that it can respond
+		 * to focus and user input.
+		 */
+		enable: function() {
+			var self = this;
+			self.$input.prop('disabled', false);
+			self.$control_input.prop('disabled', false).prop('tabindex', self.tabIndex);
+			self.isDisabled = false;
+			self.unlock();
+		},
+	
+		/**
+		 * Completely destroys the control and
+		 * unbinds all event listeners so that it can
+		 * be garbage collected.
+		 */
+		destroy: function() {
+			var self = this;
+			var eventNS = self.eventNS;
+			var revertSettings = self.revertSettings;
+	
+			self.trigger('destroy');
+			self.off();
+			self.$wrapper.remove();
+			self.$dropdown.remove();
+	
+			self.$input
+				.html('')
+				.append(revertSettings.$children)
+				.removeAttr('tabindex')
+				.removeClass('selectized')
+				.attr({tabindex: revertSettings.tabindex})
+				.show();
+	
+			self.$control_input.removeData('grow');
+			self.$input.removeData('selectize');
+	
+			$(window).off(eventNS);
+			$(document).off(eventNS);
+			$(document.body).off(eventNS);
+	
+			delete self.$input[0].selectize;
+		},
+	
+		/**
+		 * A helper method for rendering "item" and
+		 * "option" templates, given the data.
+		 *
+		 * @param {string} templateName
+		 * @param {object} data
+		 * @returns {string}
+		 */
+		render: function(templateName, data) {
+			var value, id, label;
+			var html = '';
+			var cache = false;
+			var self = this;
+			var regex_tag = /^[\t \r\n]*<([a-z][a-z0-9\-_]*(?:\:[a-z][a-z0-9\-_]*)?)/i;
+	
+			if (templateName === 'option' || templateName === 'item') {
+				value = hash_key(data[self.settings.valueField]);
+				cache = !!value;
+			}
+	
+			// pull markup from cache if it exists
+			if (cache) {
+				if (!isset(self.renderCache[templateName])) {
+					self.renderCache[templateName] = {};
+				}
+				if (self.renderCache[templateName].hasOwnProperty(value)) {
+					return self.renderCache[templateName][value];
+				}
+			}
+	
+			// render markup
+			html = self.settings.render[templateName].apply(this, [data, escape_html]);
+	
+			// add mandatory attributes
+			if (templateName === 'option' || templateName === 'option_create') {
+				html = html.replace(regex_tag, '<$1 data-selectable');
+			}
+			if (templateName === 'optgroup') {
+				id = data[self.settings.optgroupValueField] || '';
+				html = html.replace(regex_tag, '<$1 data-group="' + escape_replace(escape_html(id)) + '"');
+			}
+			if (templateName === 'option' || templateName === 'item') {
+				html = html.replace(regex_tag, '<$1 data-value="' + escape_replace(escape_html(value || '')) + '"');
+			}
+	
+			// update cache
+			if (cache) {
+				self.renderCache[templateName][value] = html;
+			}
+	
+			return html;
+		},
+	
+		/**
+		 * Clears the render cache for a template. If
+		 * no template is given, clears all render
+		 * caches.
+		 *
+		 * @param {string} templateName
+		 */
+		clearCache: function(templateName) {
+			var self = this;
+			if (typeof templateName === 'undefined') {
+				self.renderCache = {};
+			} else {
+				delete self.renderCache[templateName];
+			}
+		},
+	
+		/**
+		 * Determines whether or not to display the
+		 * create item prompt, given a user input.
+		 *
+		 * @param {string} input
+		 * @return {boolean}
+		 */
+		canCreate: function(input) {
+			var self = this;
+			if (!self.settings.create) return false;
+			var filter = self.settings.createFilter;
+			return input.length
+				&& (typeof filter !== 'function' || filter.apply(self, [input]))
+				&& (typeof filter !== 'string' || new RegExp(filter).test(input))
+				&& (!(filter instanceof RegExp) || filter.test(input));
+		}
+	
+	});
+	
+	
+	Selectize.count = 0;
+	Selectize.defaults = {
+		options: [],
+		optgroups: [],
+	
+		plugins: [],
+		delimiter: ',',
+		splitOn: null, // regexp or string for splitting up values from a paste command
+		persist: true,
+		diacritics: true,
+		create: false,
+		createOnBlur: false,
+		createFilter: null,
+		highlight: true,
+		openOnFocus: true,
+		maxOptions: 1000,
+		maxItems: null,
+		hideSelected: null,
+		addPrecedence: false,
+		selectOnTab: false,
+		preload: false,
+		allowEmptyOption: false,
+		closeAfterSelect: false,
+	
+		scrollDuration: 60,
+		loadThrottle: 300,
+		loadingClass: 'loading',
+	
+		dataAttr: 'data-data',
+		optgroupField: 'optgroup',
+		valueField: 'value',
+		labelField: 'text',
+		optgroupLabelField: 'label',
+		optgroupValueField: 'value',
+		lockOptgroupOrder: false,
+	
+		sortField: '$order',
+		searchField: ['text'],
+		searchConjunction: 'and',
+	
+		mode: null,
+		wrapperClass: 'selectize-control',
+		inputClass: 'selectize-input',
+		dropdownClass: 'selectize-dropdown',
+		dropdownContentClass: 'selectize-dropdown-content',
+	
+		dropdownParent: null,
+	
+		copyClassesToDropdown: true,
+	
+		/*
+		load                 : null, // function(query, callback) { ... }
+		score                : null, // function(search) { ... }
+		onInitialize         : null, // function() { ... }
+		onChange             : null, // function(value) { ... }
+		onItemAdd            : null, // function(value, $item) { ... }
+		onItemRemove         : null, // function(value) { ... }
+		onClear              : null, // function() { ... }
+		onOptionAdd          : null, // function(value, data) { ... }
+		onOptionRemove       : null, // function(value) { ... }
+		onOptionClear        : null, // function() { ... }
+		onOptionGroupAdd     : null, // function(id, data) { ... }
+		onOptionGroupRemove  : null, // function(id) { ... }
+		onOptionGroupClear   : null, // function() { ... }
+		onDropdownOpen       : null, // function($dropdown) { ... }
+		onDropdownClose      : null, // function($dropdown) { ... }
+		onType               : null, // function(str) { ... }
+		onDelete             : null, // function(values) { ... }
+		*/
+	
+		render: {
+			/*
+			item: null,
+			optgroup: null,
+			optgroup_header: null,
+			option: null,
+			option_create: null
+			*/
+		}
+	};
+	
+	
+	$.fn.selectize = function(settings_user) {
+		var defaults             = $.fn.selectize.defaults;
+		var settings             = $.extend({}, defaults, settings_user);
+		var attr_data            = settings.dataAttr;
+		var field_label          = settings.labelField;
+		var field_value          = settings.valueField;
+		var field_optgroup       = settings.optgroupField;
+		var field_optgroup_label = settings.optgroupLabelField;
+		var field_optgroup_value = settings.optgroupValueField;
+	
+		/**
+		 * Initializes selectize from a <input type="text"> element.
+		 *
+		 * @param {object} $input
+		 * @param {object} settings_element
+		 */
+		var init_textbox = function($input, settings_element) {
+			var i, n, values, option;
+	
+			var data_raw = $input.attr(attr_data);
+	
+			if (!data_raw) {
+				var value = $.trim($input.val() || '');
+				if (!settings.allowEmptyOption && !value.length) return;
+				values = value.split(settings.delimiter);
+				for (i = 0, n = values.length; i < n; i++) {
+					option = {};
+					option[field_label] = values[i];
+					option[field_value] = values[i];
+					settings_element.options.push(option);
+				}
+				settings_element.items = values;
+			} else {
+				settings_element.options = JSON.parse(data_raw);
+				for (i = 0, n = settings_element.options.length; i < n; i++) {
+					settings_element.items.push(settings_element.options[i][field_value]);
+				}
+			}
+		};
+	
+		/**
+		 * Initializes selectize from a <select> element.
+		 *
+		 * @param {object} $input
+		 * @param {object} settings_element
+		 */
+		var init_select = function($input, settings_element) {
+			var i, n, tagName, $children, order = 0;
+			var options = settings_element.options;
+			var optionsMap = {};
+	
+			var readData = function($el) {
+				var data = attr_data && $el.attr(attr_data);
+				if (typeof data === 'string' && data.length) {
+					return JSON.parse(data);
+				}
+				return null;
+			};
+	
+			var addOption = function($option, group) {
+				$option = $($option);
+	
+				var value = hash_key($option.attr('value'));
+				if (!value && !settings.allowEmptyOption) return;
+	
+				// if the option already exists, it's probably been
+				// duplicated in another optgroup. in this case, push
+				// the current group to the "optgroup" property on the
+				// existing option so that it's rendered in both places.
+				if (optionsMap.hasOwnProperty(value)) {
+					if (group) {
+						var arr = optionsMap[value][field_optgroup];
+						if (!arr) {
+							optionsMap[value][field_optgroup] = group;
+						} else if (!$.isArray(arr)) {
+							optionsMap[value][field_optgroup] = [arr, group];
+						} else {
+							arr.push(group);
+						}
+					}
+					return;
+				}
+	
+				var option             = readData($option) || {};
+				option[field_label]    = option[field_label] || $option.text();
+				option[field_value]    = option[field_value] || value;
+				option[field_optgroup] = option[field_optgroup] || group;
+	
+				optionsMap[value] = option;
+				options.push(option);
+	
+				if ($option.is(':selected')) {
+					settings_element.items.push(value);
+				}
+			};
+	
+			var addGroup = function($optgroup) {
+				var i, n, id, optgroup, $options;
+	
+				$optgroup = $($optgroup);
+				id = $optgroup.attr('label');
+	
+				if (id) {
+					optgroup = readData($optgroup) || {};
+					optgroup[field_optgroup_label] = id;
+					optgroup[field_optgroup_value] = id;
+					settings_element.optgroups.push(optgroup);
+				}
+	
+				$options = $('option', $optgroup);
+				for (i = 0, n = $options.length; i < n; i++) {
+					addOption($options[i], id);
+				}
+			};
+	
+			settings_element.maxItems = $input.attr('multiple') ? null : 1;
+	
+			$children = $input.children();
+			for (i = 0, n = $children.length; i < n; i++) {
+				tagName = $children[i].tagName.toLowerCase();
+				if (tagName === 'optgroup') {
+					addGroup($children[i]);
+				} else if (tagName === 'option') {
+					addOption($children[i]);
+				}
+			}
+		};
+	
+		return this.each(function() {
+			if (this.selectize) return;
+	
+			var instance;
+			var $input = $(this);
+			var tag_name = this.tagName.toLowerCase();
+			var placeholder = $input.attr('placeholder') || $input.attr('data-placeholder');
+			if (!placeholder && !settings.allowEmptyOption) {
+				placeholder = $input.children('option[value=""]').text();
+			}
+	
+			var settings_element = {
+				'placeholder' : placeholder,
+				'options'     : [],
+				'optgroups'   : [],
+				'items'       : []
+			};
+	
+			if (tag_name === 'select') {
+				init_select($input, settings_element);
+			} else {
+				init_textbox($input, settings_element);
+			}
+	
+			instance = new Selectize($input, $.extend(true, {}, defaults, settings_element, settings_user));
+		});
+	};
+	
+	$.fn.selectize.defaults = Selectize.defaults;
+	$.fn.selectize.support = {
+		validity: SUPPORTS_VALIDITY_API
+	};
+	
+	
+	Selectize.define('drag_drop', function(options) {
+		if (!$.fn.sortable) throw new Error('The "drag_drop" plugin requires jQuery UI "sortable".');
+		if (this.settings.mode !== 'multi') return;
+		var self = this;
+	
+		self.lock = (function() {
+			var original = self.lock;
+			return function() {
+				var sortable = self.$control.data('sortable');
+				if (sortable) sortable.disable();
+				return original.apply(self, arguments);
+			};
+		})();
+	
+		self.unlock = (function() {
+			var original = self.unlock;
+			return function() {
+				var sortable = self.$control.data('sortable');
+				if (sortable) sortable.enable();
+				return original.apply(self, arguments);
+			};
+		})();
+	
+		self.setup = (function() {
+			var original = self.setup;
+			return function() {
+				original.apply(this, arguments);
+	
+				var $control = self.$control.sortable({
+					items: '[data-value]',
+					forcePlaceholderSize: true,
+					disabled: self.isLocked,
+					start: function(e, ui) {
+						ui.placeholder.css('width', ui.helper.css('width'));
+						$control.css({overflow: 'visible'});
+					},
+					stop: function() {
+						$control.css({overflow: 'hidden'});
+						var active = self.$activeItems ? self.$activeItems.slice() : null;
+						var values = [];
+						$control.children('[data-value]').each(function() {
+							values.push($(this).attr('data-value'));
+						});
+						self.setValue(values);
+						self.setActiveItem(active);
+					}
+				});
+			};
+		})();
+	
+	});
+	
+	Selectize.define('dropdown_header', function(options) {
+		var self = this;
+	
+		options = $.extend({
+			title         : 'Untitled',
+			headerClass   : 'selectize-dropdown-header',
+			titleRowClass : 'selectize-dropdown-header-title',
+			labelClass    : 'selectize-dropdown-header-label',
+			closeClass    : 'selectize-dropdown-header-close',
+	
+			html: function(data) {
+				return (
+					'<div class="' + data.headerClass + '">' +
+						'<div class="' + data.titleRowClass + '">' +
+							'<span class="' + data.labelClass + '">' + data.title + '</span>' +
+							'<a href="javascript:void(0)" class="' + data.closeClass + '">&times;</a>' +
+						'</div>' +
+					'</div>'
+				);
+			}
+		}, options);
+	
+		self.setup = (function() {
+			var original = self.setup;
+			return function() {
+				original.apply(self, arguments);
+				self.$dropdown_header = $(options.html(options));
+				self.$dropdown.prepend(self.$dropdown_header);
+			};
+		})();
+	
+	});
+	
+	Selectize.define('optgroup_columns', function(options) {
+		var self = this;
+	
+		options = $.extend({
+			equalizeWidth  : true,
+			equalizeHeight : true
+		}, options);
+	
+		this.getAdjacentOption = function($option, direction) {
+			var $options = $option.closest('[data-group]').find('[data-selectable]');
+			var index    = $options.index($option) + direction;
+	
+			return index >= 0 && index < $options.length ? $options.eq(index) : $();
+		};
+	
+		this.onKeyDown = (function() {
+			var original = self.onKeyDown;
+			return function(e) {
+				var index, $option, $options, $optgroup;
+	
+				if (this.isOpen && (e.keyCode === KEY_LEFT || e.keyCode === KEY_RIGHT)) {
+					self.ignoreHover = true;
+					$optgroup = this.$activeOption.closest('[data-group]');
+					index = $optgroup.find('[data-selectable]').index(this.$activeOption);
+	
+					if(e.keyCode === KEY_LEFT) {
+						$optgroup = $optgroup.prev('[data-group]');
+					} else {
+						$optgroup = $optgroup.next('[data-group]');
+					}
+	
+					$options = $optgroup.find('[data-selectable]');
+					$option  = $options.eq(Math.min($options.length - 1, index));
+					if ($option.length) {
+						this.setActiveOption($option);
+					}
+					return;
+				}
+	
+				return original.apply(this, arguments);
+			};
+		})();
+	
+		var getScrollbarWidth = function() {
+			var div;
+			var width = getScrollbarWidth.width;
+			var doc = document;
+	
+			if (typeof width === 'undefined') {
+				div = doc.createElement('div');
+				div.innerHTML = '<div style="width:50px;height:50px;position:absolute;left:-50px;top:-50px;overflow:auto;"><div style="width:1px;height:100px;"></div></div>';
+				div = div.firstChild;
+				doc.body.appendChild(div);
+				width = getScrollbarWidth.width = div.offsetWidth - div.clientWidth;
+				doc.body.removeChild(div);
+			}
+			return width;
+		};
+	
+		var equalizeSizes = function() {
+			var i, n, height_max, width, width_last, width_parent, $optgroups;
+	
+			$optgroups = $('[data-group]', self.$dropdown_content);
+			n = $optgroups.length;
+			if (!n || !self.$dropdown_content.width()) return;
+	
+			if (options.equalizeHeight) {
+				height_max = 0;
+				for (i = 0; i < n; i++) {
+					height_max = Math.max(height_max, $optgroups.eq(i).height());
+				}
+				$optgroups.css({height: height_max});
+			}
+	
+			if (options.equalizeWidth) {
+				width_parent = self.$dropdown_content.innerWidth() - getScrollbarWidth();
+				width = Math.round(width_parent / n);
+				$optgroups.css({width: width});
+				if (n > 1) {
+					width_last = width_parent - width * (n - 1);
+					$optgroups.eq(n - 1).css({width: width_last});
+				}
+			}
+		};
+	
+		if (options.equalizeHeight || options.equalizeWidth) {
+			hook.after(this, 'positionDropdown', equalizeSizes);
+			hook.after(this, 'refreshOptions', equalizeSizes);
+		}
+	
+	
+	});
+	
+	Selectize.define('remove_button', function(options) {
+		if (this.settings.mode === 'single') return;
+	
+		options = $.extend({
+			label     : '&times;',
+			title     : 'Remove',
+			className : 'remove',
+			append    : true
+		}, options);
+	
+		var self = this;
+		var html = '<a href="javascript:void(0)" class="' + options.className + '" tabindex="-1" title="' + escape_html(options.title) + '">' + options.label + '</a>';
+	
+		/**
+		 * Appends an element as a child (with raw HTML).
+		 *
+		 * @param {string} html_container
+		 * @param {string} html_element
+		 * @return {string}
+		 */
+		var append = function(html_container, html_element) {
+			var pos = html_container.search(/(<\/[^>]+>\s*)$/);
+			return html_container.substring(0, pos) + html_element + html_container.substring(pos);
+		};
+	
+		this.setup = (function() {
+			var original = self.setup;
+			return function() {
+				// override the item rendering method to add the button to each
+				if (options.append) {
+					var render_item = self.settings.render.item;
+					self.settings.render.item = function(data) {
+						return append(render_item.apply(this, arguments), html);
+					};
+				}
+	
+				original.apply(this, arguments);
+	
+				// add event listener
+				this.$control.on('click', '.' + options.className, function(e) {
+					e.preventDefault();
+					if (self.isLocked) return;
+	
+					var $item = $(e.currentTarget).parent();
+					self.setActiveItem($item);
+					if (self.deleteSelection()) {
+						self.setCaret(self.items.length);
+					}
+				});
+	
+			};
+		})();
+	
+	});
+	
+	Selectize.define('restore_on_backspace', function(options) {
+		var self = this;
+	
+		options.text = options.text || function(option) {
+			return option[this.settings.labelField];
+		};
+	
+		this.onKeyDown = (function() {
+			var original = self.onKeyDown;
+			return function(e) {
+				var index, option;
+				if (e.keyCode === KEY_BACKSPACE && this.$control_input.val() === '' && !this.$activeItems.length) {
+					index = this.caretPos - 1;
+					if (index >= 0 && index < this.items.length) {
+						option = this.options[this.items[index]];
+						if (this.deleteSelection(e)) {
+							this.setTextboxValue(options.text.apply(this, [option]));
+							this.refreshOptions(true);
+						}
+						e.preventDefault();
+						return;
+					}
+				}
+				return original.apply(this, arguments);
+			};
+		})();
+	});
+	
+
+	return Selectize;
+}));
\ No newline at end of file
diff --git a/modules-available/js_selectize/config.json b/modules-available/js_selectize/config.json
new file mode 100644
index 00000000..d1261653
--- /dev/null
+++ b/modules-available/js_selectize/config.json
@@ -0,0 +1,3 @@
+{
+	"dependencies" : []
+}
diff --git a/modules-available/js_selectize/style.css b/modules-available/js_selectize/style.css
new file mode 100644
index 00000000..c5a8510c
--- /dev/null
+++ b/modules-available/js_selectize/style.css
@@ -0,0 +1,407 @@
+/**
+ * selectize.bootstrap3.css (v0.12.2) - Bootstrap 3 Theme
+ * Copyright (c) 2013–2015 Brian Reavis & contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the License at:
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+ * ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ *
+ * @author Brian Reavis <brian@thirdroute.com>
+ */
+.selectize-control.plugin-drag_drop.multi > .selectize-input > div.ui-sortable-placeholder {
+  visibility: visible !important;
+  background: #f2f2f2 !important;
+  background: rgba(0, 0, 0, 0.06) !important;
+  border: 0 none !important;
+  -webkit-box-shadow: inset 0 0 12px 4px #ffffff;
+  box-shadow: inset 0 0 12px 4px #ffffff;
+}
+.selectize-control.plugin-drag_drop .ui-sortable-placeholder::after {
+  content: '!';
+  visibility: hidden;
+}
+.selectize-control.plugin-drag_drop .ui-sortable-helper {
+  -webkit-box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
+}
+.selectize-dropdown-header {
+  position: relative;
+  padding: 3px 12px;
+  border-bottom: 1px solid #d0d0d0;
+  background: #f8f8f8;
+  -webkit-border-radius: 4px 4px 0 0;
+  -moz-border-radius: 4px 4px 0 0;
+  border-radius: 4px 4px 0 0;
+}
+.selectize-dropdown-header-close {
+  position: absolute;
+  right: 12px;
+  top: 50%;
+  color: #333333;
+  opacity: 0.4;
+  margin-top: -12px;
+  line-height: 20px;
+  font-size: 20px !important;
+}
+.selectize-dropdown-header-close:hover {
+  color: #000000;
+}
+.selectize-dropdown.plugin-optgroup_columns .optgroup {
+  border-right: 1px solid #f2f2f2;
+  border-top: 0 none;
+  float: left;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+.selectize-dropdown.plugin-optgroup_columns .optgroup:last-child {
+  border-right: 0 none;
+}
+.selectize-dropdown.plugin-optgroup_columns .optgroup:before {
+  display: none;
+}
+.selectize-dropdown.plugin-optgroup_columns .optgroup-header {
+  border-top: 0 none;
+}
+.selectize-control.plugin-remove_button [data-value] {
+  position: relative;
+  padding-right: 24px !important;
+}
+.selectize-control.plugin-remove_button [data-value] .remove {
+  z-index: 1;
+  /* fixes ie bug (see #392) */
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  width: 17px;
+  text-align: center;
+  font-weight: bold;
+  font-size: 12px;
+  color: inherit;
+  text-decoration: none;
+  vertical-align: middle;
+  display: inline-block;
+  padding: 1px 0 0 0;
+  border-left: 1px solid rgba(0, 0, 0, 0);
+  -webkit-border-radius: 0 2px 2px 0;
+  -moz-border-radius: 0 2px 2px 0;
+  border-radius: 0 2px 2px 0;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+.selectize-control.plugin-remove_button [data-value] .remove:hover {
+  background: rgba(0, 0, 0, 0.05);
+}
+.selectize-control.plugin-remove_button [data-value].active .remove {
+  border-left-color: rgba(0, 0, 0, 0);
+}
+.selectize-control.plugin-remove_button .disabled [data-value] .remove:hover {
+  background: none;
+}
+.selectize-control.plugin-remove_button .disabled [data-value] .remove {
+  border-left-color: rgba(77, 77, 77, 0);
+}
+.selectize-control.plugin-remove_button .remove-single {
+  position: absolute;
+  right: 28px;
+  top: 6px;
+  font-size: 23px;
+}
+.selectize-control {
+  position: relative;
+}
+.selectize-dropdown,
+.selectize-input,
+.selectize-input input {
+  color: #333333;
+  font-family: inherit;
+  font-size: inherit;
+  line-height: 20px;
+  -webkit-font-smoothing: inherit;
+}
+.selectize-input,
+.selectize-control.single .selectize-input.input-active {
+  background: #ffffff;
+  cursor: text;
+  display: inline-block;
+}
+.selectize-input {
+  border: 1px solid #cccccc;
+  padding: 6px 12px;
+  display: inline-block;
+  width: 100%;
+  overflow: hidden;
+  position: relative;
+  z-index: 1;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+  -webkit-box-shadow: none;
+  box-shadow: none;
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+}
+.selectize-control.multi .selectize-input.has-items {
+  padding: 5px 12px 2px;
+}
+.selectize-input.full {
+  background-color: #ffffff;
+}
+.selectize-input.disabled,
+.selectize-input.disabled * {
+  cursor: default !important;
+}
+.selectize-input.focus {
+  -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.15);
+  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.15);
+}
+.selectize-input.dropdown-active {
+  -webkit-border-radius: 4px 4px 0 0;
+  -moz-border-radius: 4px 4px 0 0;
+  border-radius: 4px 4px 0 0;
+}
+.selectize-input > * {
+  vertical-align: baseline;
+  display: -moz-inline-stack;
+  display: inline-block;
+  zoom: 1;
+  *display: inline;
+}
+.selectize-control.multi .selectize-input > div {
+  cursor: pointer;
+  margin: 0 3px 3px 0;
+  padding: 1px 3px;
+  background: #efefef;
+  color: #333333;
+  border: 0 solid rgba(0, 0, 0, 0);
+}
+.selectize-control.multi .selectize-input > div.active {
+  background: #428bca;
+  color: #ffffff;
+  border: 0 solid rgba(0, 0, 0, 0);
+}
+.selectize-control.multi .selectize-input.disabled > div,
+.selectize-control.multi .selectize-input.disabled > div.active {
+  color: #808080;
+  background: #ffffff;
+  border: 0 solid rgba(77, 77, 77, 0);
+}
+.selectize-input > input {
+  display: inline-block !important;
+  padding: 0 !important;
+  min-height: 0 !important;
+  max-height: none !important;
+  max-width: 100% !important;
+  margin: 0 !important;
+  text-indent: 0 !important;
+  border: 0 none !important;
+  background: none !important;
+  line-height: inherit !important;
+  -webkit-user-select: auto !important;
+  -webkit-box-shadow: none !important;
+  box-shadow: none !important;
+}
+.selectize-input > input::-ms-clear {
+  display: none;
+}
+.selectize-input > input:focus {
+  outline: none !important;
+}
+.selectize-input::after {
+  content: ' ';
+  display: block;
+  clear: left;
+}
+.selectize-input.dropdown-active::before {
+  content: ' ';
+  display: block;
+  position: absolute;
+  background: #ffffff;
+  height: 1px;
+  bottom: 0;
+  left: 0;
+  right: 0;
+}
+.selectize-dropdown {
+  position: absolute;
+  z-index: 10;
+  border: 1px solid #d0d0d0;
+  background: #ffffff;
+  margin: -1px 0 0 0;
+  border-top: 0 none;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+  -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+  -webkit-border-radius: 0 0 4px 4px;
+  -moz-border-radius: 0 0 4px 4px;
+  border-radius: 0 0 4px 4px;
+}
+.selectize-dropdown [data-selectable] {
+  cursor: pointer;
+  overflow: hidden;
+}
+.selectize-dropdown [data-selectable] .highlight {
+  background: rgba(255, 237, 40, 0.4);
+  -webkit-border-radius: 1px;
+  -moz-border-radius: 1px;
+  border-radius: 1px;
+}
+.selectize-dropdown [data-selectable],
+.selectize-dropdown .optgroup-header {
+  padding: 3px 12px;
+}
+.selectize-dropdown .optgroup:first-child .optgroup-header {
+  border-top: 0 none;
+}
+.selectize-dropdown .optgroup-header {
+  color: #777777;
+  background: #ffffff;
+  cursor: default;
+}
+.selectize-dropdown .active {
+  background-color: #f5f5f5;
+  color: #262626;
+}
+.selectize-dropdown .active.create {
+  color: #262626;
+}
+.selectize-dropdown .create {
+  color: rgba(51, 51, 51, 0.5);
+}
+.selectize-dropdown-content {
+  overflow-y: auto;
+  overflow-x: hidden;
+  max-height: 200px;
+}
+.selectize-control.single .selectize-input,
+.selectize-control.single .selectize-input input {
+  cursor: pointer;
+}
+.selectize-control.single .selectize-input.input-active,
+.selectize-control.single .selectize-input.input-active input {
+  cursor: text;
+}
+.selectize-control.single .selectize-input:after {
+  content: ' ';
+  display: block;
+  position: absolute;
+  top: 50%;
+  right: 17px;
+  margin-top: -3px;
+  width: 0;
+  height: 0;
+  border-style: solid;
+  border-width: 5px 5px 0 5px;
+  border-color: #333333 transparent transparent transparent;
+}
+.selectize-control.single .selectize-input.dropdown-active:after {
+  margin-top: -4px;
+  border-width: 0 5px 5px 5px;
+  border-color: transparent transparent #333333 transparent;
+}
+.selectize-control.rtl.single .selectize-input:after {
+  left: 17px;
+  right: auto;
+}
+.selectize-control.rtl .selectize-input > input {
+  margin: 0 4px 0 -2px !important;
+}
+.selectize-control .selectize-input.disabled {
+  opacity: 0.5;
+  background-color: #ffffff;
+}
+.selectize-dropdown,
+.selectize-dropdown.form-control {
+  height: auto;
+  padding: 0;
+  margin: 2px 0 0 0;
+  z-index: 1000;
+  background: #ffffff;
+  border: 1px solid #cccccc;
+  border: 1px solid rgba(0, 0, 0, 0.15);
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+  -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
+  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
+}
+.selectize-dropdown .optgroup-header {
+  font-size: 12px;
+  line-height: 1.42857143;
+}
+.selectize-dropdown .optgroup:first-child:before {
+  display: none;
+}
+.selectize-dropdown .optgroup:before {
+  content: ' ';
+  display: block;
+  height: 1px;
+  margin: 9px 0;
+  overflow: hidden;
+  background-color: #e5e5e5;
+  margin-left: -12px;
+  margin-right: -12px;
+}
+.selectize-dropdown-content {
+  padding: 5px 0;
+}
+.selectize-dropdown-header {
+  padding: 6px 12px;
+}
+.selectize-input {
+  min-height: 34px;
+}
+.selectize-input.dropdown-active {
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+}
+.selectize-input.dropdown-active::before {
+  display: none;
+}
+.selectize-input.focus {
+  border-color: #66afe9;
+  outline: 0;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
+  box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
+}
+.has-error .selectize-input {
+  border-color: #a94442;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+}
+.has-error .selectize-input:focus {
+  border-color: #843534;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #ce8483;
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #ce8483;
+}
+.selectize-control.multi .selectize-input.has-items {
+  padding-left: 9px;
+  padding-right: 9px;
+}
+.selectize-control.multi .selectize-input > div {
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  border-radius: 3px;
+}
+.form-control.selectize-control {
+  padding: 0;
+  height: auto;
+  border: none;
+  background: none;
+  -webkit-box-shadow: none;
+  box-shadow: none;
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+}