text: /**
   * @author zhixin wen <wenzhixin2010@gmail.com>
   * @version 1.2.2
   *
   * http://wenzhixin.net.cn/p/multiple-select/
   *
   * This is a modified version of multiple-select
   * @author Ghislain B.
   *
   * Some minor changes were applied to the original with the following changes:
   * - "okButton" boolean flag which when set will add an "OK" button at the end of the list to make it convenient to the user to close the window
   * - "okButtonText" was also added to change locale
   * - made code changes to support re-styling of the radio/checkbox with Font-Awesome or any other font
   * - width option was not working when using "container", added some code to support it
   * - "offsetLeft" (defaults to 0) if we want the drop to be offset from the select element (by default it is aligned left to the element with 0 offset)
   * - "autoAdjustDropHeight" (defaults to False) when set will automatically adjust the drop (up or down) height
   * - "autoAdjustDropPosition" (defaults to False) when set will automatically calculate the area with the most available space and use best possible choise for the drop to show (up or down)
   * - "autoDropWidth" (defaults to False) when set will automatically adjust the dropdown width with the same size as the select element width
   * - "autoAdjustDropWidthByTextSize" (defaults to false) when set will automatically adjust the drop (up or down) width by the text size (it will use largest text width)
   * - "adjustHeightPadding" (defaults to 10) when using "autoAdjustDropHeight" we might want to add a bottom (or top) padding instead of taking the entire available space
   * - "maxWidth" (defaults to 500) when using "autoAdjustDropWidthByTextSize" we want to make sure not to go too wide, so we can use "maxWidth" to cover that
   * - "minWidth" (defaults to undefined) when using "autoAdjustDropWidthByTextSize" and we want to make sure to have a minimum width
   * - "domElmOkButtonHeight" defaults to 26 (as per CSS), that is the "OK" button element height in pixels inside the drop when using multiple-selection
   * - "domElmSelectSidePadding" defaults to 26 (as per CSS), that is the select DOM element padding in pixels (that is not the drop but the select itself, how tall is it)
   * - "domElmSelectAllHeight" defaults to 39 (as per CSS), that is the DOM element of the "Select All" text area
   * - "useSelectOptionLabel" (defaults to False), when set to True it will use the <option label=""> that can be used to display selected options
   * - "useSelectOptionLabelToHtml" (defaults to False), same as "useSelectOptionLabel" but will also render html
   */
  
  (function ($) {
  
    'use strict';
  
    // it only does '%s', and return '' when arguments are undefined
    var sprintf = function (str) {
      var args = arguments,
        flag = true,
        i = 1;
  
      str = str.replace(/%s/g, function () {
        var arg = args[i++];
  
        if (typeof arg === 'undefined') {
          flag = false;
          return '';
        }
        return arg;
      });
      return flag ? str : '';
    };
  
    var removeDiacritics = function (str) {
      var defaultDiacriticsRemovalMap = [
        { 'base': 'A', 'letters': /[\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F]/g },
        { 'base': 'AA', 'letters': /[\uA732]/g },
        { 'base': 'AE', 'letters': /[\u00C6\u01FC\u01E2]/g },
        { 'base': 'AO', 'letters': /[\uA734]/g },
        { 'base': 'AU', 'letters': /[\uA736]/g },
        { 'base': 'AV', 'letters': /[\uA738\uA73A]/g },
        { 'base': 'AY', 'letters': /[\uA73C]/g },
        { 'base': 'B', 'letters': /[\u0042\u24B7\uFF22\u1E02\u1E04\u1E06\u0243\u0182\u0181]/g },
        { 'base': 'C', 'letters': /[\u0043\u24B8\uFF23\u0106\u0108\u010A\u010C\u00C7\u1E08\u0187\u023B\uA73E]/g },
        { 'base': 'D', 'letters': /[\u0044\u24B9\uFF24\u1E0A\u010E\u1E0C\u1E10\u1E12\u1E0E\u0110\u018B\u018A\u0189\uA779]/g },
        { 'base': 'DZ', 'letters': /[\u01F1\u01C4]/g },
        { 'base': 'Dz', 'letters': /[\u01F2\u01C5]/g },
        { 'base': 'E', 'letters': /[\u0045\u24BA\uFF25\u00C8\u00C9\u00CA\u1EC0\u1EBE\u1EC4\u1EC2\u1EBC\u0112\u1E14\u1E16\u0114\u0116\u00CB\u1EBA\u011A\u0204\u0206\u1EB8\u1EC6\u0228\u1E1C\u0118\u1E18\u1E1A\u0190\u018E]/g },
        { 'base': 'F', 'letters': /[\u0046\u24BB\uFF26\u1E1E\u0191\uA77B]/g },
        { 'base': 'G', 'letters': /[\u0047\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E]/g },
        { 'base': 'H', 'letters': /[\u0048\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D]/g },
        { 'base': 'I', 'letters': /[\u0049\u24BE\uFF29\u00CC\u00CD\u00CE\u0128\u012A\u012C\u0130\u00CF\u1E2E\u1EC8\u01CF\u0208\u020A\u1ECA\u012E\u1E2C\u0197]/g },
        { 'base': 'J', 'letters': /[\u004A\u24BF\uFF2A\u0134\u0248]/g },
        { 'base': 'K', 'letters': /[\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2]/g },
        { 'base': 'L', 'letters': /[\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780]/g },
        { 'base': 'LJ', 'letters': /[\u01C7]/g },
        { 'base': 'Lj', 'letters': /[\u01C8]/g },
        { 'base': 'M', 'letters': /[\u004D\u24C2\uFF2D\u1E3E\u1E40\u1E42\u2C6E\u019C]/g },
        { 'base': 'N', 'letters': /[\u004E\u24C3\uFF2E\u01F8\u0143\u00D1\u1E44\u0147\u1E46\u0145\u1E4A\u1E48\u0220\u019D\uA790\uA7A4]/g },
        { 'base': 'NJ', 'letters': /[\u01CA]/g },
        { 'base': 'Nj', 'letters': /[\u01CB]/g },
        { 'base': 'O', 'letters': /[\u004F\u24C4\uFF2F\u00D2\u00D3\u00D4\u1ED2\u1ED0\u1ED6\u1ED4\u00D5\u1E4C\u022C\u1E4E\u014C\u1E50\u1E52\u014E\u022E\u0230\u00D6\u022A\u1ECE\u0150\u01D1\u020C\u020E\u01A0\u1EDC\u1EDA\u1EE0\u1EDE\u1EE2\u1ECC\u1ED8\u01EA\u01EC\u00D8\u01FE\u0186\u019F\uA74A\uA74C]/g },
        { 'base': 'OI', 'letters': /[\u01A2]/g },
        { 'base': 'OO', 'letters': /[\uA74E]/g },
        { 'base': 'OU', 'letters': /[\u0222]/g },
        { 'base': 'P', 'letters': /[\u0050\u24C5\uFF30\u1E54\u1E56\u01A4\u2C63\uA750\uA752\uA754]/g },
        { 'base': 'Q', 'letters': /[\u0051\u24C6\uFF31\uA756\uA758\u024A]/g },
        { 'base': 'R', 'letters': /[\u0052\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782]/g },
        { 'base': 'S', 'letters': /[\u0053\u24C8\uFF33\u1E9E\u015A\u1E64\u015C\u1E60\u0160\u1E66\u1E62\u1E68\u0218\u015E\u2C7E\uA7A8\uA784]/g },
        { 'base': 'T', 'letters': /[\u0054\u24C9\uFF34\u1E6A\u0164\u1E6C\u021A\u0162\u1E70\u1E6E\u0166\u01AC\u01AE\u023E\uA786]/g },
        { 'base': 'TZ', 'letters': /[\uA728]/g },
        { 'base': 'U', 'letters': /[\u0055\u24CA\uFF35\u00D9\u00DA\u00DB\u0168\u1E78\u016A\u1E7A\u016C\u00DC\u01DB\u01D7\u01D5\u01D9\u1EE6\u016E\u0170\u01D3\u0214\u0216\u01AF\u1EEA\u1EE8\u1EEE\u1EEC\u1EF0\u1EE4\u1E72\u0172\u1E76\u1E74\u0244]/g },
        { 'base': 'V', 'letters': /[\u0056\u24CB\uFF36\u1E7C\u1E7E\u01B2\uA75E\u0245]/g },
        { 'base': 'VY', 'letters': /[\uA760]/g },
        { 'base': 'W', 'letters': /[\u0057\u24CC\uFF37\u1E80\u1E82\u0174\u1E86\u1E84\u1E88\u2C72]/g },
        { 'base': 'X', 'letters': /[\u0058\u24CD\uFF38\u1E8A\u1E8C]/g },
        { 'base': 'Y', 'letters': /[\u0059\u24CE\uFF39\u1EF2\u00DD\u0176\u1EF8\u0232\u1E8E\u0178\u1EF6\u1EF4\u01B3\u024E\u1EFE]/g },
        { 'base': 'Z', 'letters': /[\u005A\u24CF\uFF3A\u0179\u1E90\u017B\u017D\u1E92\u1E94\u01B5\u0224\u2C7F\u2C6B\uA762]/g },
        { 'base': 'a', 'letters': /[\u0061\u24D0\uFF41\u1E9A\u00E0\u00E1\u00E2\u1EA7\u1EA5\u1EAB\u1EA9\u00E3\u0101\u0103\u1EB1\u1EAF\u1EB5\u1EB3\u0227\u01E1\u00E4\u01DF\u1EA3\u00E5\u01FB\u01CE\u0201\u0203\u1EA1\u1EAD\u1EB7\u1E01\u0105\u2C65\u0250]/g },
        { 'base': 'aa', 'letters': /[\uA733]/g },
        { 'base': 'ae', 'letters': /[\u00E6\u01FD\u01E3]/g },
        { 'base': 'ao', 'letters': /[\uA735]/g },
        { 'base': 'au', 'letters': /[\uA737]/g },
        { 'base': 'av', 'letters': /[\uA739\uA73B]/g },
        { 'base': 'ay', 'letters': /[\uA73D]/g },
        { 'base': 'b', 'letters': /[\u0062\u24D1\uFF42\u1E03\u1E05\u1E07\u0180\u0183\u0253]/g },
        { 'base': 'c', 'letters': /[\u0063\u24D2\uFF43\u0107\u0109\u010B\u010D\u00E7\u1E09\u0188\u023C\uA73F\u2184]/g },
        { 'base': 'd', 'letters': /[\u0064\u24D3\uFF44\u1E0B\u010F\u1E0D\u1E11\u1E13\u1E0F\u0111\u018C\u0256\u0257\uA77A]/g },
        { 'base': 'dz', 'letters': /[\u01F3\u01C6]/g },
        { 'base': 'e', 'letters': /[\u0065\u24D4\uFF45\u00E8\u00E9\u00EA\u1EC1\u1EBF\u1EC5\u1EC3\u1EBD\u0113\u1E15\u1E17\u0115\u0117\u00EB\u1EBB\u011B\u0205\u0207\u1EB9\u1EC7\u0229\u1E1D\u0119\u1E19\u1E1B\u0247\u025B\u01DD]/g },
        { 'base': 'f', 'letters': /[\u0066\u24D5\uFF46\u1E1F\u0192\uA77C]/g },
        { 'base': 'g', 'letters': /[\u0067\u24D6\uFF47\u01F5\u011D\u1E21\u011F\u0121\u01E7\u0123\u01E5\u0260\uA7A1\u1D79\uA77F]/g },
        { 'base': 'h', 'letters': /[\u0068\u24D7\uFF48\u0125\u1E23\u1E27\u021F\u1E25\u1E29\u1E2B\u1E96\u0127\u2C68\u2C76\u0265]/g },
        { 'base': 'hv', 'letters': /[\u0195]/g },
        { 'base': 'i', 'letters': /[\u0069\u24D8\uFF49\u00EC\u00ED\u00EE\u0129\u012B\u012D\u00EF\u1E2F\u1EC9\u01D0\u0209\u020B\u1ECB\u012F\u1E2D\u0268\u0131]/g },
        { 'base': 'j', 'letters': /[\u006A\u24D9\uFF4A\u0135\u01F0\u0249]/g },
        { 'base': 'k', 'letters': /[\u006B\u24DA\uFF4B\u1E31\u01E9\u1E33\u0137\u1E35\u0199\u2C6A\uA741\uA743\uA745\uA7A3]/g },
        { 'base': 'l', 'letters': /[\u006C\u24DB\uFF4C\u0140\u013A\u013E\u1E37\u1E39\u013C\u1E3D\u1E3B\u017F\u0142\u019A\u026B\u2C61\uA749\uA781\uA747]/g },
        { 'base': 'lj', 'letters': /[\u01C9]/g },
        { 'base': 'm', 'letters': /[\u006D\u24DC\uFF4D\u1E3F\u1E41\u1E43\u0271\u026F]/g },
        { 'base': 'n', 'letters': /[\u006E\u24DD\uFF4E\u01F9\u0144\u00F1\u1E45\u0148\u1E47\u0146\u1E4B\u1E49\u019E\u0272\u0149\uA791\uA7A5]/g },
        { 'base': 'nj', 'letters': /[\u01CC]/g },
        { 'base': 'o', 'letters': /[\u006F\u24DE\uFF4F\u00F2\u00F3\u00F4\u1ED3\u1ED1\u1ED7\u1ED5\u00F5\u1E4D\u022D\u1E4F\u014D\u1E51\u1E53\u014F\u022F\u0231\u00F6\u022B\u1ECF\u0151\u01D2\u020D\u020F\u01A1\u1EDD\u1EDB\u1EE1\u1EDF\u1EE3\u1ECD\u1ED9\u01EB\u01ED\u00F8\u01FF\u0254\uA74B\uA74D\u0275]/g },
        { 'base': 'oi', 'letters': /[\u01A3]/g },
        { 'base': 'ou', 'letters': /[\u0223]/g },
        { 'base': 'oo', 'letters': /[\uA74F]/g },
        { 'base': 'p', 'letters': /[\u0070\u24DF\uFF50\u1E55\u1E57\u01A5\u1D7D\uA751\uA753\uA755]/g },
        { 'base': 'q', 'letters': /[\u0071\u24E0\uFF51\u024B\uA757\uA759]/g },
        { 'base': 'r', 'letters': /[\u0072\u24E1\uFF52\u0155\u1E59\u0159\u0211\u0213\u1E5B\u1E5D\u0157\u1E5F\u024D\u027D\uA75B\uA7A7\uA783]/g },
        { 'base': 's', 'letters': /[\u0073\u24E2\uFF53\u00DF\u015B\u1E65\u015D\u1E61\u0161\u1E67\u1E63\u1E69\u0219\u015F\u023F\uA7A9\uA785\u1E9B]/g },
        { 'base': 't', 'letters': /[\u0074\u24E3\uFF54\u1E6B\u1E97\u0165\u1E6D\u021B\u0163\u1E71\u1E6F\u0167\u01AD\u0288\u2C66\uA787]/g },
        { 'base': 'tz', 'letters': /[\uA729]/g },
        { 'base': 'u', 'letters': /[\u0075\u24E4\uFF55\u00F9\u00FA\u00FB\u0169\u1E79\u016B\u1E7B\u016D\u00FC\u01DC\u01D8\u01D6\u01DA\u1EE7\u016F\u0171\u01D4\u0215\u0217\u01B0\u1EEB\u1EE9\u1EEF\u1EED\u1EF1\u1EE5\u1E73\u0173\u1E77\u1E75\u0289]/g },
        { 'base': 'v', 'letters': /[\u0076\u24E5\uFF56\u1E7D\u1E7F\u028B\uA75F\u028C]/g },
        { 'base': 'vy', 'letters': /[\uA761]/g },
        { 'base': 'w', 'letters': /[\u0077\u24E6\uFF57\u1E81\u1E83\u0175\u1E87\u1E85\u1E98\u1E89\u2C73]/g },
        { 'base': 'x', 'letters': /[\u0078\u24E7\uFF58\u1E8B\u1E8D]/g },
        { 'base': 'y', 'letters': /[\u0079\u24E8\uFF59\u1EF3\u00FD\u0177\u1EF9\u0233\u1E8F\u00FF\u1EF7\u1E99\u1EF5\u01B4\u024F\u1EFF]/g },
        { 'base': 'z', 'letters': /[\u007A\u24E9\uFF5A\u017A\u1E91\u017C\u017E\u1E93\u1E95\u01B6\u0225\u0240\u2C6C\uA763]/g }
      ];
  
      for (var i = 0; i < defaultDiacriticsRemovalMap.length; i++) {
        str = str.replace(defaultDiacriticsRemovalMap[i].letters, defaultDiacriticsRemovalMap[i].base);
      }
  
      return str;
  
    };
  
    var stripScripts = function (str) {
      var div = document.createElement('div');
      div.innerHTML = str;
      var scripts = div.getElementsByTagName('script');
      var i = scripts.length;
      while (i--) {
        scripts[i].parentNode.removeChild(scripts[i]);
      }
      return div.innerHTML;
    }
  
    function MultipleSelect($el, options) {
      var that = this,
        name = $el.attr('name') || options.name || '';
  
      this.options = options;
  
      // hide select element
      this.$el = $el.hide();
  
      // label element
      this.$label = this.$el.closest('label');
      if (this.$label.length === 0 && this.$el.attr('id')) {
        this.$label = $(sprintf('label[for="%s"]', this.$el.attr('id').replace(/:/g, '\\:')));
      }
  
      // restore class and title from select element
      this.$parent = $(sprintf(
        '<div class="ms-parent %s" %s/>',
        $el.attr('class') || '',
        sprintf('title="%s"', $el.attr('title'))));
  
      // add placeholder to choice button
      this.$choice = $(sprintf([
        '<button type="button" class="ms-choice">',
        '<span class="placeholder">%s</span>',
        '<div></div>',
        '</button>'
      ].join(''),
        this.options.placeholder));
  
      // default position is bottom
      this.$drop = $(sprintf('<div name="%s" class="ms-drop %s"%s></div>',
        $el.attr('name') || options.name || '',
        this.options.position,
        sprintf(' style="width: %s"', this.options.dropWidth)));
  
      this.$el.after(this.$parent);
      this.$parent.append(this.$choice);
      this.$parent.append(this.$drop);
  
      if (this.$el.prop('disabled')) {
        this.$choice.addClass('disabled');
      }
      this.$parent.css('width',
        this.options.width ||
        this.$el.css('width') ||
        this.$el.outerWidth() + 20);
  
      this.selectAllName = 'data-name="selectAll' + name + '"';
      this.selectGroupName = 'data-name="selectGroup' + name + '"';
      this.selectItemName = 'data-name="selectItem' + name + '"';
  
      if (!this.options.keepOpen) {
        $('body').click(function (e) {
          if ($(e.target)[0] === that.$choice[0] ||
            $(e.target).parents('.ms-choice')[0] === that.$choice[0]) {
            return;
          }
          if (($(e.target)[0] === that.$drop[0] ||
            $(e.target).parents('.ms-drop')[0] !== that.$drop[0] && e.target !== $el[0]) &&
            that.options.isOpen
          ) {
            that.close();
          }
        });
      }
  
      this.options.onAfterCreate();
    }
  
    MultipleSelect.prototype = {
      constructor: MultipleSelect,
  
      init: function () {
        var that = this,
          $ul = $('<ul></ul>');
  
        this.$drop.html('');
  
        if (this.options.filter) {
          this.$drop.append([
            '<div class="ms-search">',
            '<input type="text" autocomplete="off" autocorrect="off" autocapitilize="off" spellcheck="false">',
            '</div>'].join('')
          );
        }
  
        if (this.options.selectAll && !this.options.single) {
          this.$drop.append([
            '<div class="ms-select-all" style="width: 100%">',
            '<label style="width: 100%">',
            sprintf('<input type="checkbox" %s />', this.selectAllName),
            sprintf('<span>%s%s%s</span>',
              this.options.selectAllDelimiter[0],
              this.options.selectAllText,
              this.options.selectAllDelimiter[1]
            ),
            '</label>',
            '</div>'
          ].join(''));
        }
  
        $.each(this.$el.children(), function (i, elm) {
          $ul.append(that.optionToHtml(i, elm));
        });
        $ul.append(sprintf('<li class="ms-no-results">%s</li>', this.options.noMatchesFound));
        this.$drop.append($ul);
  
        if (this.options.okButton) {
          this.$okButton = $('<button type="button" class="ms-ok-button">' + this.options.okButtonText + '</button>');
          this.$drop.append(this.$okButton);
        }
  
        var dropWidth = isNaN(this.options.width) ? this.options.width : this.options.width + 'px';
        this.$drop.css('width', dropWidth);
        this.$drop.find('ul').css('max-height', this.options.maxHeight + 'px');
        this.$drop.find('.multiple').css('width', this.options.multipleWidth + 'px');
  
        this.$searchInput = this.$drop.find('.ms-search input');
        this.$selectAll = this.$drop.find('input[' + this.selectAllName + ']');
        this.$selectGroups = this.$drop.find('input[' + this.selectGroupName + ']');
        this.$selectItems = this.$drop.find('input[' + this.selectItemName + ']:enabled');
        this.$disableItems = this.$drop.find('input[' + this.selectItemName + ']:disabled');
        this.$noResults = this.$drop.find('.ms-no-results');
  
        this.events();
        this.updateSelectAll(true);
        this.update(true);
  
        if (this.options.isOpen) {
          this.open();
        }
  
        if (this.options.openOnHover) {
          $(".ms-parent").hover(function (e) {
            that.open();
          });
        }
      },
  
      optionToHtml: function (i, elm, group, groupDisabled) {
        var that = this,
          $elm = $(elm),
          classes = $elm.attr('class') || '',
          label = sprintf('label="%s"', $elm.attr('label') || ''),
          title = sprintf('title="%s"', $elm.attr('title')),
          multiple = this.options.multiple ? 'multiple' : '',
          disabled,
          type = this.options.single ? 'radio' : 'checkbox';
  
        if ($elm.is('option')) {
          var value = $elm.val(),
            text = that.options.textTemplate($elm),
            selected = $elm.prop('selected'),
            style = sprintf('style="%s"', this.options.styler(value)),
            $el;
  
          disabled = groupDisabled || $elm.prop('disabled');
  
          $el = $([
            sprintf('<li class="%s %s" %s %s %s>', multiple, classes, title, style, label),
            sprintf('<label class="%s">', disabled ? 'disabled' : ''),
            sprintf('<input type="%s" %s%s%s%s>',
              type, this.selectItemName,
              selected ? ' checked="checked"' : '',
              disabled ? ' disabled="disabled"' : '',
              sprintf(' data-group="%s"', group)),
            sprintf('<span>%s</span>', text),
            '</label>',
            '</li>'
          ].join(''));
          $el.find('input').val(value);
          return $el;
        }
        if ($elm.is('optgroup')) {
          var label = that.options.labelTemplate($elm),
            $group = $('<div/>');
  
          group = 'group_' + i;
          disabled = $elm.prop('disabled');
  
          $group.append([
            '<li class="group">',
            sprintf('<label class="optgroup %s" data-group="%s">', disabled ? 'disabled' : '', group),
            this.options.hideOptgroupCheckboxes || this.options.single ? '' :
              sprintf('<input type="checkbox" %s %s>',
                this.selectGroupName, disabled ? 'disabled="disabled"' : ''),
            label,
            '</label>',
            '</li>'
          ].join(''));
  
          $.each($elm.children(), function (i, elm) {
            $group.append(that.optionToHtml(i, elm, group, disabled));
          });
          return $group.html();
        }
      },
  
      events: function () {
        var that = this,
          toggleOpen = function (e) {
            e.preventDefault();
            that[that.options.isOpen ? 'close' : 'open']();
          };
  
        if (this.$label) {
          this.$label.off('click').on('click', function (e) {
            if (e.target.nodeName.toLowerCase() !== 'label' || e.target !== this) {
              return;
            }
            toggleOpen(e);
            if (!that.options.filter || !that.options.isOpen) {
              that.focus();
            }
            e.stopPropagation(); // Causes lost focus otherwise
          });
        }
  
        if (this.options.okButton) {
          this.$okButton.off('click').on('click', function (e) {
            toggleOpen(e);
            e.stopPropagation(); // Causes lost focus otherwise
          });
        }
  
        this.$choice.off('click').on('click', toggleOpen)
          .off('focus').on('focus', this.options.onFocus)
          .off('blur').on('blur', this.options.onBlur);
  
        this.$parent.off('keydown').on('keydown', function (e) {
          switch (e.which) {
            case 27: // esc key
              that.close();
              that.$choice.focus();
              break;
          }
        });
  
        this.$searchInput.off('keydown').on('keydown', function (e) {
          // Ensure shift-tab causes lost focus from filter as with clicking away
          if (e.keyCode === 9 && e.shiftKey) {
            that.close();
          }
        }).off('keyup').on('keyup', function (e) {
          // enter or space
          // Avoid selecting/deselecting if no choices made
          if (that.options.filterAcceptOnEnter && (e.which === 13 || e.which === 32) && that.$searchInput.val()) {
            that.$selectAll.click();
            that.close();
            that.focus();
            return;
          }
          that.filter();
        });
  
        this.$selectAll.off('click').on('click', function () {
          var checked = $(this).prop('checked'),
            $items = that.$selectItems.filter(':visible');
  
          if ($items.length === that.$selectItems.length) {
            that[checked ? 'checkAll' : 'uncheckAll']();
          } else { // when the filter option is true
            that.$selectGroups.prop('checked', checked);
            $items.prop('checked', checked);
            that.options[checked ? 'onCheckAll' : 'onUncheckAll']();
            that.update();
          }
        });
        this.$selectGroups.off('click').on('click', function () {
          var group = $(this).parent().attr('data-group'),
            $items = that.$selectItems.filter(':visible'),
            $children = $items.filter(sprintf('[data-group="%s"]', group)),
            checked = $children.length !== $children.filter(':checked').length;
  
          $children.prop('checked', checked);
          that.updateSelectAll();
          that.update();
          that.options.onOptgroupClick({
            label: $(this).parent().text(),
            checked: checked,
            children: $children.get(),
            instance: that
          });
        });
        this.$selectItems.off('click').on('click', function () {
          that.updateSelectAll();
          that.update();
          that.updateOptGroupSelect();
          that.options.onClick({
            label: $(this).parent().text(),
            value: $(this).val(),
            checked: $(this).prop('checked'),
            instance: that
          });
  
          if (that.options.single) {
            var clickedVal = $(this).val();
            that.$selectItems.filter(function () {
              return $(this).val() !== clickedVal;
            }).each(function () {
              $(this).prop('checked', false);
            });
            that.update();
          }
  
          if (that.options.single && that.options.isOpen && !that.options.keepOpen) {
            that.close();
          }
        });
      },
  
      open: function () {
        if (this.$choice.hasClass('disabled')) {
          return;
        }
        this.options.isOpen = true;
        this.$choice.find('>div').addClass('open');
        this.$drop[this.animateMethod('show')]();
  
        // fix filter bug: no results show
        if (this.$selectAll) {
          this.$selectAll.parent().show();
        }
        if (this.$noResults) {
          this.$noResults.hide();
        }
  
        // Fix #77: 'All selected' when no options
        if (!this.$el.children().length) {
          this.$selectAll.parent().hide();
          this.$noResults.show();
        }
  
        if (this.options.offsetLeft) {
          var offset = this.$drop.offset();
          var leftPos = offset.left - this.options.offsetLeft;
  
          this.$drop.offset({
            top: offset.top,
            left: leftPos
          });
        }
  
        if (this.options.container) {
          var offset = this.$drop.offset();
          var leftPos = this.options.offsetLeft ? (offset.left - this.options.offsetLeft) : offset.left;
  
          this.$drop.appendTo($(this.options.container));
          this.$drop.offset({
            top: offset.top,
            left: leftPos
          });
        }
  
        if (this.options.filter) {
          this.$searchInput.val('');
          this.$searchInput.focus();
          this.filter();
        }
  
        if (this.options.autoAdjustDropWidthByTextSize) {
          this.adjustDropWidthByText();
        } else if (!this.options.width && this.options.autoDropWidth) {
          this.$drop.css('width', this.$parent.width());
        }
  
        var newPosition = this.options.position;
        if (this.options.autoAdjustDropHeight) {
          // if autoAdjustDropPosition is enable, we 1st need to see what position the drop will be located
          // without necessary toggling it's position just yet, we just want to know the future position for calculation
          if (this.options.autoAdjustDropPosition) {
            var spaceBottom = this.availableSpaceBottom();
            var spaceTop = this.availableSpaceTop();
            var msDropHeight = this.$drop.outerHeight() || 0;
            newPosition = (spaceBottom < msDropHeight && spaceTop > spaceBottom) ? 'top' : 'bottom';
          }
  
          // now that we know which drop position will be used, let's adjust the drop height
          this.adjustDropHeight(newPosition);
        }
  
        if (this.options.autoAdjustDropPosition) {
          this.adjustDropPosition(this.options.autoAdjustDropHeight);
        }
  
        this.options.onOpen();
      },
  
      close: function () {
        this.options.isOpen = false;
        this.$choice.find('>div').removeClass('open');
        this.$drop[this.animateMethod('hide')]();
        if (this.options.container) {
          this.$parent.append(this.$drop);
          this.$drop.css({
            'top': 'auto',
            'left': 'auto'
          });
        }
        this.options.onClose();
      },
  
      animateMethod: function (method) {
        var methods = {
          show: {
            fade: 'fadeIn',
            slide: 'slideDown'
          },
          hide: {
            fade: 'fadeOut',
            slide: 'slideUp'
          }
        };
  
        return methods[method][this.options.animate] || method;
      },
  
      adjustDropHeight: function (position) {
        var isDropPositionBottom = position !== 'top' ? true : false;
        var filterHeight = this.options.filter ? this.options.domElmFilterHeight : 0;
        var okButtonHeight = this.options.single ? 0 : this.options.domElmOkButtonHeight;
        var selectAllHeight = this.options.single ? 0 : this.options.domElmSelectAllHeight;
        var msDropMinimalHeight = filterHeight + okButtonHeight + selectAllHeight + 5;
  
        var spaceBottom = this.availableSpaceBottom();
        var spaceTop = this.availableSpaceTop();
  
        var newHeight = this.options.maxHeight;
        if (isDropPositionBottom) {
          newHeight = spaceBottom - msDropMinimalHeight - this.options.adjustHeightPadding;
        } else {
          newHeight = spaceTop - msDropMinimalHeight - this.options.adjustHeightPadding;
        }
  
        if (!this.options.maxHeight || (this.options.maxHeight && newHeight < this.options.maxHeight)) {
          this.$drop.find('ul').css('max-height', (newHeight + 'px'));
          return true; // return true, we adjusted the height
        }
  
        // did we adjusted the drop height? false
        return false;
      },
  
      adjustDropPosition: function (forceToggle) {
        var position = 'bottom';
        var msDropHeight = this.$drop.outerHeight() || 0;
        var selectOffsetTop = this.$parent.offset().top;
        var spaceBottom = this.availableSpaceBottom();
        var spaceTop = this.availableSpaceTop();
  
        // find the optimal position of the drop (always choose "bottom" as the default to use)
        if (spaceBottom > msDropHeight) {
          position = 'bottom';
        } else if ((msDropHeight > spaceBottom) && (spaceTop > spaceBottom)) {
          if (this.options.container) {
            // when using a container, we need to offset the drop ourself
            // and also make sure there's space available on top before doing so
            var newOffsetTop = selectOffsetTop - msDropHeight;
            if (newOffsetTop < 0) {
              newOffsetTop = 0;
            }
  
            if (newOffsetTop > 0 || forceToggle) {
              position = 'top';
              this.$drop.offset({ top: (newOffsetTop < 0) ? 0 : newOffsetTop });
            }
          } else {
            // without container, we simply need to add the "top" class to the drop
            position = 'top';
            this.$drop.addClass(position);
          }
          this.$drop.removeClass('bottom');
        }
  
        return position;
      },
  
      adjustDropWidthByText: function () {
        // keep the dropWidth/width as reference, if our new calculated width is below then we will re-adjust (else do nothing)
        var currentDefinedWidth = this.$parent.width();
        if (this.options.dropWidth || this.options.width) {
          currentDefinedWidth = this.options.dropWidth || this.options.width;
        }
  
        // calculate the "Select All" element width, this text is configurable which is why we recalculate every time
        var selectParentWidth = this.$parent.width();
        var selectAllElmWidth = $('span', this.$drop).width() + this.options.domElmSelectSidePadding;
        var hasScrollbar = $('ul', this.$drop).hasScrollBar();
        var scrollbarWidth = hasScrollbar ? this.getScrollbarWidth() : 0;
        var maxDropWidth = 0;
  
        $('li span', this.$drop).each(function (index, elm) {
          var spanWidth = $(elm).width();
          if (spanWidth > maxDropWidth) {
            maxDropWidth = spanWidth;
          }
        });
        maxDropWidth += this.options.domElmSelectSidePadding + scrollbarWidth; // add a padding & include the browser scrollbar width
  
        // make sure the new calculated width is wide enough to include the "Select All" text (this text is configurable)
        if (maxDropWidth < selectAllElmWidth) {
          maxDropWidth = selectAllElmWidth;
        }
  
        // if a maxWidth is defined, make sure our new calculate width is not over the maxWidth
        if (this.options.maxWidth && maxDropWidth > this.options.maxWidth) {
          maxDropWidth = this.options.maxWidth;
        }
  
        // if a minWidth is defined, make sure our new calculate width is not below the minWidth
        if (this.options.minWidth && maxDropWidth < this.options.minWidth) {
          maxDropWidth = this.options.minWidth;
        }
  
        // if select parent DOM element is bigger then new calculated width, we'll use the same width for the drop as the parent
        if (maxDropWidth < selectParentWidth) {
          maxDropWidth = selectParentWidth;
        }
  
        // finally re-adjust the drop to the new calculated width when necessary
        if (currentDefinedWidth > maxDropWidth || this.$drop.width() > maxDropWidth || currentDefinedWidth === '100%') {
          this.$drop.css({ 'width': maxDropWidth, 'max-width': maxDropWidth });
        }
      },
  
      availableSpaceBottom: function () {
        var windowHeight = $(window).innerHeight() || this.options.maxHeight;
        var pageScroll = $(window).scrollTop() || 0;
        var msDropOffsetTop = this.$drop.offset().top;
        return windowHeight - (msDropOffsetTop - pageScroll);
      },
  
      availableSpaceTop: function () {
        var pageScroll = $(window).scrollTop() || 0;
        var msDropOffsetTop = this.$parent.offset().top;
        return msDropOffsetTop - pageScroll;
      },
  
      update: function (ignoreTrigger) {
        var selects = this.options.displayValues ? this.getSelects() : this.getSelects('text'),
          $span = this.$choice.find('>span'),
          sl = selects.length;
  
        if (sl === 0) {
          $span.addClass('placeholder').html(this.options.placeholder);
        } else if (this.options.allSelected && sl === this.$selectItems.length + this.$disableItems.length) {
          $span.removeClass('placeholder').html(this.options.allSelected);
        } else if (this.options.ellipsis && sl > this.options.minimumCountSelected) {
          $span.removeClass('placeholder').text(selects.slice(0, this.options.minimumCountSelected)
            .join(this.options.delimiter) + '...');
        } else if (this.options.countSelected && sl > this.options.minimumCountSelected) {
          $span.removeClass('placeholder').html(this.options.countSelected
            .replace('#', selects.length)
            .replace('%', this.$selectItems.length + this.$disableItems.length));
        } else {
          if (this.options.useSelectOptionLabel || this.options.useSelectOptionLabelToHtml) {
            var labels = this.getSelects('label').join(this.options.delimiter);
            if (this.options.useSelectOptionLabelToHtml) {
              var sanitizedLabels = stripScripts(labels);
              $span.removeClass('placeholder').html(sanitizedLabels);
            } else {
              $span.removeClass('placeholder').text(labels);
            }
          } else {
            $span.removeClass('placeholder').text(selects.join(this.options.delimiter));
          }
        }
  
        if (this.options.addTitle) {
          var selectType = (this.options.useSelectOptionLabel || this.options.useSelectOptionLabelToHtml) ? 'label' : 'text'
          $span.prop('title', this.getSelects(selectType));
        }
  
        // set selects to select
        this.$el.val(this.getSelects());
  
        // add selected class to selected li
        this.$drop.find('li').removeClass('selected');
        this.$drop.find('input:checked').each(function () {
          $(this).parents('li').first().addClass('selected');
        });
  
        // trigger <select> change event
        if (!ignoreTrigger) {
          this.$el.trigger('change');
        }
      },
  
      updateSelectAll: function (isInit) {
        var $items = this.$selectItems;
  
        if (!isInit) {
          $items = $items.filter(':visible');
        }
        this.$selectAll.prop('checked', $items.length &&
          $items.length === $items.filter(':checked').length);
        if (!isInit && this.$selectAll.prop('checked')) {
          this.options.onCheckAll();
        }
      },
  
      updateOptGroupSelect: function () {
        var $items = this.$selectItems.filter(':visible');
        $.each(this.$selectGroups, function (i, val) {
          var group = $(val).parent().attr('data-group'),
            $children = $items.filter(sprintf('[data-group="%s"]', group));
          $(val).prop('checked', $children.length &&
            $children.length === $children.filter(':checked').length);
        });
      },
  
      //value or text, default: 'value'
      getSelects: function (type) {
        var that = this,
          texts = [],
          labels = [],
          values = [];
        this.$drop.find(sprintf('input[%s]:checked', this.selectItemName)).each(function () {
          texts.push($(this).parents('li').first().text());
          labels.push($(this).parents('li').attr('label') || '');
          values.push($(this).val());
        });
  
        if (type === 'text' && this.$selectGroups.length) {
          texts = [];
          this.$selectGroups.each(function () {
            var html = [],
              text = $.trim($(this).parent().text()),
              group = $(this).parent().data('group'),
              $children = that.$drop.find(sprintf('[%s][data-group="%s"]', that.selectItemName, group)),
              $selected = $children.filter(':checked');
  
            if (!$selected.length) {
              return;
            }
  
            html.push('[');
            html.push(text);
            if ($children.length > $selected.length) {
              var list = [];
              $selected.each(function () {
                list.push($(this).parent().text());
              });
              html.push(': ' + list.join(', '));
            }
            html.push(']');
            texts.push(html.join(''));
          });
        } else if (type === 'label' && this.$selectGroups.length) {
          labels = [];
          this.$selectGroups.each(function () {
            var html = [],
              label = $.trim($(this).attr('label') || ''),
              group = $(this).parent().data('group'),
              $children = that.$drop.find(sprintf('[%s][data-group="%s"]', that.selectItemName, group)),
              $selected = $children.filter(':checked');
  
            if (!$selected.length) {
              return;
            }
  
            html.push('[');
            html.push(label);
            if ($children.length > $selected.length) {
              var list = [];
              $selected.each(function () {
                list.push($(this).attr('label') || '');
              });
              html.push(': ' + list.join(', '));
            }
            html.push(']');
            labels.push(html.join(''));
          });
        }
  
        switch (type) {
          case 'text':
            return texts;
          case 'label':
            return labels;
          default:
            return values;
        }
      },
  
      getScrollbarWidth: function () {
        var outer = document.createElement("div");
        outer.style.visibility = "hidden";
        outer.style.width = "100px";
        outer.style.msOverflowStyle = "scrollbar"; // needed for WinJS apps
  
        document.body.appendChild(outer);
  
        var widthNoScroll = outer.offsetWidth;
        // force scrollbars
        outer.style.overflow = "scroll";
  
        // add innerdiv
        var inner = document.createElement("div");
        inner.style.width = "100%";
        outer.appendChild(inner);
  
        var widthWithScroll = inner.offsetWidth;
  
        // remove divs
        outer.parentNode.removeChild(outer);
  
        return widthNoScroll - widthWithScroll;
      },
  
      setSelects: function (values) {
        var that = this;
        this.$selectItems.prop('checked', false);
        this.$disableItems.prop('checked', false);
        $.each(values, function (i, value) {
          that.$selectItems.filter(sprintf('[value="%s"]', value)).prop('checked', true);
          that.$disableItems.filter(sprintf('[value="%s"]', value)).prop('checked', true);
        });
        this.$selectAll.prop('checked', this.$selectItems.length ===
          this.$selectItems.filter(':checked').length + this.$disableItems.filter(':checked').length);
  
        $.each(that.$selectGroups, function (i, val) {
          var group = $(val).parent().attr('data-group'),
            $children = that.$selectItems.filter('[data-group="' + group + '"]');
          $(val).prop('checked', $children.length &&
            $children.length === $children.filter(':checked').length);
        });
  
        this.update(false);
      },
  
      enable: function () {
        this.$choice.removeClass('disabled');
      },
  
      disable: function () {
        this.$choice.addClass('disabled');
      },
  
      destroy: function () {
        this.$el.before(this.$parent).show();
        this.$parent.remove();
      },
  
      checkAll: function () {
        this.$selectItems.prop('checked', true);
        this.$selectGroups.prop('checked', true);
        this.$selectAll.prop('checked', true);
        this.update();
        this.options.onCheckAll();
      },
  
      uncheckAll: function () {
        this.$selectItems.prop('checked', false);
        this.$selectGroups.prop('checked', false);
        this.$selectAll.prop('checked', false);
        this.update();
        this.options.onUncheckAll();
      },
  
      focus: function () {
        this.$choice.focus();
        this.options.onFocus();
      },
  
      blur: function () {
        this.$choice.blur();
        this.options.onBlur();
      },
  
      refresh: function () {
        this.init();
      },
  
      filter: function () {
        var that = this,
          text = $.trim(this.$searchInput.val()).toLowerCase();
  
        if (text.length === 0) {
          this.$selectAll.parent().show();
          this.$selectItems.parent().show();
          this.$disableItems.parent().show();
          this.$selectGroups.parent().show();
          this.$noResults.hide();
        } else {
          this.$selectItems.each(function () {
            var $parent = $(this).parent();
            $parent[removeDiacritics($parent.text().toLowerCase()).indexOf(removeDiacritics(text)) < 0 ? 'hide' : 'show']();
          });
          this.$disableItems.parent().hide();
          this.$selectGroups.each(function () {
            var $parent = $(this).parent();
            var group = $parent.attr('data-group'),
              $items = that.$selectItems.filter(':visible');
            $parent[$items.filter(sprintf('[data-group="%s"]', group)).length ? 'show' : 'hide']();
          });
  
          //Check if no matches found
          if (this.$selectItems.parent().filter(':visible').length) {
            this.$selectAll.parent().show();
            this.$noResults.hide();
          } else {
            this.$selectAll.parent().hide();
            this.$noResults.show();
          }
        }
        this.updateOptGroupSelect();
        this.updateSelectAll();
        this.options.onFilter(text);
      }
    };
  
    $.fn.hasScrollBar = function () {
      return this.get(0) && this.get(0).scrollHeight && this.get(0).scrollHeight > this.height();
    }
  
    $.fn.multipleSelect = function () {
      var option = arguments[0],
        args = arguments,
  
        value,
        allowedMethods = [
          'getSelects', 'setSelects',
          'enable', 'disable',
          'open', 'close',
          'checkAll', 'uncheckAll',
          'focus', 'blur',
          'refresh', 'destroy'
        ];
  
      this.each(function () {
        var $this = $(this),
          data = $this.data('multipleSelect'),
          options = $.extend({}, $.fn.multipleSelect.defaults,
            $this.data(), typeof option === 'object' && option);
  
        if (!data) {
          data = new MultipleSelect($this, options);
          $this.data('multipleSelect', data);
        }
  
        if (typeof option === 'string') {
          if ($.inArray(option, allowedMethods) < 0) {
            throw 'Unknown method: ' + option;
          }
          value = data[option](args[1]);
        } else {
          data.init();
          if (args[1]) {
            value = data[args[1]].apply(data, [].slice.call(args, 2));
          }
        }
      });
  
      return typeof value !== 'undefined' ? value : this;
    };
  
    $.fn.multipleSelect.defaults = {
      domElmFilterHeight: 32,
      domElmSelectSidePadding: 26,
      domElmOkButtonHeight: 26,
      domElmSelectAllHeight: 39,
      adjustHeightPadding: 10,
      name: '',
      isOpen: false,
      placeholder: '',
      selectAll: true,
      selectAllDelimiter: ['[', ']'],
      minimumCountSelected: 3,
      ellipsis: false,
      multiple: false,
      multipleWidth: 80,
      single: false,
      filter: false,
      offsetLeft: 0,
      autoAdjustDropHeight: false,
      autoAdjustDropPosition: false,
      autoDropWidth: false,
      autoAdjustDropWidthByTextSize: false,
      width: undefined,
      dropWidth: undefined,
      maxHeight: 250,
      maxWidth: 500,
      minWidth: undefined,
      container: null,
      position: 'bottom',
      keepOpen: false,
      animate: 'none', // 'none', 'fade', 'slide'
      displayValues: false,
      delimiter: ', ',
      addTitle: false,
      filterAcceptOnEnter: false,
      hideOptgroupCheckboxes: false,
      openOnHover: false,
      okButton: false,
      okButtonText: 'OK',
      selectAllText: 'Select all',
      allSelected: 'All selected',
      countSelected: '# of % selected',
      noMatchesFound: 'No matches found',
  
      styler: function () {
        return false;
      },
      textTemplate: function ($elm) {
        return $elm.html();
      },
      labelTemplate: function ($elm) {
        return $elm.attr('label');
      },
  
      onOpen: function () {
        return false;
      },
      onClose: function () {
        return false;
      },
      onCheckAll: function () {
        return false;
      },
      onUncheckAll: function () {
        return false;
      },
      onFocus: function () {
        return false;
      },
      onBlur: function () {
        return false;
      },
      onOptgroupClick: function () {
        return false;
      },
      onClick: function () {
        return false;
      },
      onFilter: function () {
        return false;
      },
      onAfterCreate: function () {
        return false;
      }
    };
  })(jQuery);
  