/*
Copyright 2012 Igor Vaynberg

Version: 3.5.2 Timestamp: Sat Nov  1 14:43:36 EDT 2014

This software is licensed under the Apache License, Version 2.0 (the "Apache License") or the GNU
General Public License version 2 (the "GPL License"). You may choose either license to govern your
use of this software only upon the condition that you accept all of the terms of either the Apache
License or the GPL License.

You may obtain a copy of the Apache License and the GPL License at:

    http://www.apache.org/licenses/LICENSE-2.0
    http://www.gnu.org/licenses/gpl-2.0.html

Unless required by applicable law or agreed to in writing, software distributed under the
Apache License or the GPL License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the Apache License and the GPL License for
the specific language governing permissions and limitations under the Apache License and the GPL License.
*/
(function ($) {
    if(typeof $.fn.each2 == "undefined") {
        $.extend($.fn, {
            /*
            * 4-10 times faster .each replacement
            * use it carefully, as it overrides jQuery context of element on each iteration
            */
            each2 : function (c) {
                var j = $([0]), i = -1, l = this.length;
                while (
                    ++i < l
                    && (j.context = j[0] = this[i])
                    && c.call(j[0], i, j) !== false //"this"=DOM, i=index, j=jQuery object
                );
                return this;
            }
        });
    }
})(jQuery);

(function ($, undefined) {
    "use strict";
    /*global document, window, jQuery, console */

    if (window.Select2 !== undefined) {
        return;
    }

    var AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer,
        lastMousePosition={x:0,y:0}, $document, scrollBarDimensions,

    KEY = {
        TAB: 9,
        ENTER: 13,
        ESC: 27,
        SPACE: 32,
        LEFT: 37,
        UP: 38,
        RIGHT: 39,
        DOWN: 40,
        SHIFT: 16,
        CTRL: 17,
        ALT: 18,
        PAGE_UP: 33,
        PAGE_DOWN: 34,
        HOME: 36,
        END: 35,
        BACKSPACE: 8,
        DELETE: 46,
        isArrow: function (k) {
            k = k.which ? k.which : k;
            switch (k) {
            case KEY.LEFT:
            case KEY.RIGHT:
            case KEY.UP:
            case KEY.DOWN:
                return true;
            }
            return false;
        },
        isControl: function (e) {
            var k = e.which;
            switch (k) {
            case KEY.SHIFT:
            case KEY.CTRL:
            case KEY.ALT:
                return true;
            }

            if (e.metaKey) return true;

            return false;
        },
        isFunctionKey: function (k) {
            k = k.which ? k.which : k;
            return k >= 112 && k <= 123;
        }
    },
    MEASURE_SCROLLBAR_TEMPLATE = "<div class='select2-measure-scrollbar'></div>",

    DIACRITICS = {"\u24B6":"A","\uFF21":"A","\u00C0":"A","\u00C1":"A","\u00C2":"A","\u1EA6":"A","\u1EA4":"A","\u1EAA":"A","\u1EA8":"A","\u00C3":"A","\u0100":"A","\u0102":"A","\u1EB0":"A","\u1EAE":"A","\u1EB4":"A","\u1EB2":"A","\u0226":"A","\u01E0":"A","\u00C4":"A","\u01DE":"A","\u1EA2":"A","\u00C5":"A","\u01FA":"A","\u01CD":"A","\u0200":"A","\u0202":"A","\u1EA0":"A","\u1EAC":"A","\u1EB6":"A","\u1E00":"A","\u0104":"A","\u023A":"A","\u2C6F":"A","\uA732":"AA","\u00C6":"AE","\u01FC":"AE","\u01E2":"AE","\uA734":"AO","\uA736":"AU","\uA738":"AV","\uA73A":"AV","\uA73C":"AY","\u24B7":"B","\uFF22":"B","\u1E02":"B","\u1E04":"B","\u1E06":"B","\u0243":"B","\u0182":"B","\u0181":"B","\u24B8":"C","\uFF23":"C","\u0106":"C","\u0108":"C","\u010A":"C","\u010C":"C","\u00C7":"C","\u1E08":"C","\u0187":"C","\u023B":"C","\uA73E":"C","\u24B9":"D","\uFF24":"D","\u1E0A":"D","\u010E":"D","\u1E0C":"D","\u1E10":"D","\u1E12":"D","\u1E0E":"D","\u0110":"D","\u018B":"D","\u018A":"D","\u0189":"D","\uA779":"D","\u01F1":"DZ","\u01C4":"DZ","\u01F2":"Dz","\u01C5":"Dz","\u24BA":"E","\uFF25":"E","\u00C8":"E","\u00C9":"E","\u00CA":"E","\u1EC0":"E","\u1EBE":"E","\u1EC4":"E","\u1EC2":"E","\u1EBC":"E","\u0112":"E","\u1E14":"E","\u1E16":"E","\u0114":"E","\u0116":"E","\u00CB":"E","\u1EBA":"E","\u011A":"E","\u0204":"E","\u0206":"E","\u1EB8":"E","\u1EC6":"E","\u0228":"E","\u1E1C":"E","\u0118":"E","\u1E18":"E","\u1E1A":"E","\u0190":"E","\u018E":"E","\u24BB":"F","\uFF26":"F","\u1E1E":"F","\u0191":"F","\uA77B":"F","\u24BC":"G","\uFF27":"G","\u01F4":"G","\u011C":"G","\u1E20":"G","\u011E":"G","\u0120":"G","\u01E6":"G","\u0122":"G","\u01E4":"G","\u0193":"G","\uA7A0":"G","\uA77D":"G","\uA77E":"G","\u24BD":"H","\uFF28":"H","\u0124":"H","\u1E22":"H","\u1E26":"H","\u021E":"H","\u1E24":"H","\u1E28":"H","\u1E2A":"H","\u0126":"H","\u2C67":"H","\u2C75":"H","\uA78D":"H","\u24BE":"I","\uFF29":"I","\u00CC":"I","\u00CD":"I","\u00CE":"I","\u0128":"I","\u012A":"I","\u012C":"I","\u0130":"I","\u00CF":"I","\u1E2E":"I","\u1EC8":"I","\u01CF":"I","\u0208":"I","\u020A":"I","\u1ECA":"I","\u012E":"I","\u1E2C":"I","\u0197":"I","\u24BF":"J","\uFF2A":"J","\u0134":"J","\u0248":"J","\u24C0":"K","\uFF2B":"K","\u1E30":"K","\u01E8":"K","\u1E32":"K","\u0136":"K","\u1E34":"K","\u0198":"K","\u2C69":"K","\uA740":"K","\uA742":"K","\uA744":"K","\uA7A2":"K","\u24C1":"L","\uFF2C":"L","\u013F":"L","\u0139":"L","\u013D":"L","\u1E36":"L","\u1E38":"L","\u013B":"L","\u1E3C":"L","\u1E3A":"L","\u0141":"L","\u023D":"L","\u2C62":"L","\u2C60":"L","\uA748":"L","\uA746":"L","\uA780":"L","\u01C7":"LJ","\u01C8":"Lj","\u24C2":"M","\uFF2D":"M","\u1E3E":"M","\u1E40":"M","\u1E42":"M","\u2C6E":"M","\u019C":"M","\u24C3":"N","\uFF2E":"N","\u01F8":"N","\u0143":"N","\u00D1":"N","\u1E44":"N","\u0147":"N","\u1E46":"N","\u0145":"N","\u1E4A":"N","\u1E48":"N","\u0220":"N","\u019D":"N","\uA790":"N","\uA7A4":"N","\u01CA":"NJ","\u01CB":"Nj","\u24C4":"O","\uFF2F":"O","\u00D2":"O","\u00D3":"O","\u00D4":"O","\u1ED2":"O","\u1ED0":"O","\u1ED6":"O","\u1ED4":"O","\u00D5":"O","\u1E4C":"O","\u022C":"O","\u1E4E":"O","\u014C":"O","\u1E50":"O","\u1E52":"O","\u014E":"O","\u022E":"O","\u0230":"O","\u00D6":"O","\u022A":"O","\u1ECE":"O","\u0150":"O","\u01D1":"O","\u020C":"O","\u020E":"O","\u01A0":"O","\u1EDC":"O","\u1EDA":"O","\u1EE0":"O","\u1EDE":"O","\u1EE2":"O","\u1ECC":"O","\u1ED8":"O","\u01EA":"O","\u01EC":"O","\u00D8":"O","\u01FE":"O","\u0186":"O","\u019F":"O","\uA74A":"O","\uA74C":"O","\u01A2":"OI","\uA74E":"OO","\u0222":"OU","\u24C5":"P","\uFF30":"P","\u1E54":"P","\u1E56":"P","\u01A4":"P","\u2C63":"P","\uA750":"P","\uA752":"P","\uA754":"P","\u24C6":"Q","\uFF31":"Q","\uA756":"Q","\uA758":"Q","\u024A":"Q","\u24C7":"R","\uFF32":"R","\u0154":"R","\u1E58":"R","\u0158":"R","\u0210":"R","\u0212":"R","\u1E5A":"R","\u1E5C":"R","\u0156":"R","\u1E5E":"R","\u024C":"R","\u2C64":"R","\uA75A":"R","\uA7A6":"R","\uA782":"R","\u24C8":"S","\uFF33":"S","\u1E9E":"S","\u015A":"S","\u1E64":"S","\u015C":"S","\u1E60":"S","\u0160":"S","\u1E66":"S","\u1E62":"S","\u1E68":"S","\u0218":"S","\u015E":"S","\u2C7E":"S","\uA7A8":"S","\uA784":"S","\u24C9":"T","\uFF34":"T","\u1E6A":"T","\u0164":"T","\u1E6C":"T","\u021A":"T","\u0162":"T","\u1E70":"T","\u1E6E":"T","\u0166":"T","\u01AC":"T","\u01AE":"T","\u023E":"T","\uA786":"T","\uA728":"TZ","\u24CA":"U","\uFF35":"U","\u00D9":"U","\u00DA":"U","\u00DB":"U","\u0168":"U","\u1E78":"U","\u016A":"U","\u1E7A":"U","\u016C":"U","\u00DC":"U","\u01DB":"U","\u01D7":"U","\u01D5":"U","\u01D9":"U","\u1EE6":"U","\u016E":"U","\u0170":"U","\u01D3":"U","\u0214":"U","\u0216":"U","\u01AF":"U","\u1EEA":"U","\u1EE8":"U","\u1EEE":"U","\u1EEC":"U","\u1EF0":"U","\u1EE4":"U","\u1E72":"U","\u0172":"U","\u1E76":"U","\u1E74":"U","\u0244":"U","\u24CB":"V","\uFF36":"V","\u1E7C":"V","\u1E7E":"V","\u01B2":"V","\uA75E":"V","\u0245":"V","\uA760":"VY","\u24CC":"W","\uFF37":"W","\u1E80":"W","\u1E82":"W","\u0174":"W","\u1E86":"W","\u1E84":"W","\u1E88":"W","\u2C72":"W","\u24CD":"X","\uFF38":"X","\u1E8A":"X","\u1E8C":"X","\u24CE":"Y","\uFF39":"Y","\u1EF2":"Y","\u00DD":"Y","\u0176":"Y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    $document = $(document);

    nextUid=(function() { var counter=1; return function() { return counter++; }; }());


    function reinsertElement(element) {
        var placeholder = $(document.createTextNode(''));

        element.before(placeholder);
        placeholder.before(element);
        placeholder.remove();
    }

    function stripDiacritics(str) {
        // Used 'uni range + named function' from http://jsperf.com/diacritics/18
        function match(a) {
            return DIACRITICS[a] || a;
        }

        return str.replace(/[^\u0000-\u007E]/g, match);
    }

    function indexOf(value, array) {
        var i = 0, l = array.length;
        for (; i < l; i = i + 1) {
            if (equal(value, array[i])) return i;
        }
        return -1;
    }

    function measureScrollbar () {
        var $template = $( MEASURE_SCROLLBAR_TEMPLATE );
        $template.appendTo(document.body);

        var dim = {
            width: $template.width() - $template[0].clientWidth,
            height: $template.height() - $template[0].clientHeight
        };
        $template.remove();

        return dim;
    }

    /**
     * Compares equality of a and b
     * @param a
     * @param b
     */
    function equal(a, b) {
        if (a === b) return true;
        if (a === undefined || b === undefined) return false;
        if (a === null || b === null) return false;
        // Check whether 'a' or 'b' is a string (primitive or object).
        // The concatenation of an empty string (+'') converts its argument to a string's primitive.
        if (a.constructor === String) return a+'' === b+''; // a+'' - in case 'a' is a String object
        if (b.constructor === String) return b+'' === a+''; // b+'' - in case 'b' is a String object
        return false;
    }

    /**
     * Splits the string into an array of values, transforming each value. An empty array is returned for nulls or empty
     * strings
     * @param string
     * @param separator
     */
    function splitVal(string, separator, transform) {
        var val, i, l;
        if (string === null || string.length < 1) return [];
        val = string.split(separator);
        for (i = 0, l = val.length; i < l; i = i + 1) val[i] = transform(val[i]);
        return val;
    }

    function getSideBorderPadding(element) {
        return element.outerWidth(false) - element.width();
    }

    function installKeyUpChangeEvent(element) {
        var key="keyup-change-value";
        element.on("keydown", function () {
            if ($.data(element, key) === undefined) {
                $.data(element, key, element.val());
            }
        });
        element.on("keyup", function () {
            var val= $.data(element, key);
            if (val !== undefined && element.val() !== val) {
                $.removeData(element, key);
                element.trigger("keyup-change");
            }
        });
    }


    /**
     * filters mouse events so an event is fired only if the mouse moved.
     *
     * filters out mouse events that occur when mouse is stationary but
     * the elements under the pointer are scrolled.
     */
    function installFilteredMouseMove(element) {
        element.on("mousemove", function (e) {
            var lastpos = lastMousePosition;
            if (lastpos === undefined || lastpos.x !== e.pageX || lastpos.y !== e.pageY) {
                $(e.target).trigger("mousemove-filtered", e);
            }
        });
    }

    /**
     * Debounces a function. Returns a function that calls the original fn function only if no invocations have been made
     * within the last quietMillis milliseconds.
     *
     * @param quietMillis number of milliseconds to wait before invoking fn
     * @param fn function to be debounced
     * @param ctx object to be used as this reference within fn
     * @return debounced version of fn
     */
    function debounce(quietMillis, fn, ctx) {
        ctx = ctx || undefined;
        var timeout;
        return function () {
            var args = arguments;
            window.clearTimeout(timeout);
            timeout = window.setTimeout(function() {
                fn.apply(ctx, args);
            }, quietMillis);
        };
    }

    function installDebouncedScroll(threshold, element) {
        var notify = debounce(threshold, function (e) { element.trigger("scroll-debounced", e);});
        element.on("scroll", function (e) {
            if (indexOf(e.target, element.get()) >= 0) notify(e);
        });
    }

    function focus($el) {
        if ($el[0] === document.activeElement) return;

        /* set the focus in a 0 timeout - that way the focus is set after the processing
            of the current event has finished - which seems like the only reliable way
            to set focus */
        window.setTimeout(function() {
            var el=$el[0], pos=$el.val().length, range;

            $el.focus();

            /* make sure el received focus so we do not error out when trying to manipulate the caret.
                sometimes modals or others listeners may steal it after its set */
            var isVisible = (el.offsetWidth > 0 || el.offsetHeight > 0);
            if (isVisible && el === document.activeElement) {

                /* after the focus is set move the caret to the end, necessary when we val()
                    just before setting focus */
                if(el.setSelectionRange)
                {
                    el.setSelectionRange(pos, pos);
                }
                else if (el.createTextRange) {
                    range = el.createTextRange();
                    range.collapse(false);
                    range.select();
                }
            }
        }, 0);
    }

    function getCursorInfo(el) {
        el = $(el)[0];
        var offset = 0;
        var length = 0;
        if ('selectionStart' in el) {
            offset = el.selectionStart;
            length = el.selectionEnd - offset;
        } else if ('selection' in document) {
            el.focus();
            var sel = document.selection.createRange();
            length = document.selection.createRange().text.length;
            sel.moveStart('character', -el.value.length);
            offset = sel.text.length - length;
        }
        return { offset: offset, length: length };
    }

    function killEvent(event) {
        event.preventDefault();
        event.stopPropagation();
    }
    function killEventImmediately(event) {
        event.preventDefault();
        event.stopImmediatePropagation();
    }

    function measureTextWidth(e) {
        if (!sizer){
            var style = e[0].currentStyle || window.getComputedStyle(e[0], null);
            sizer = $(document.createElement("div")).css({
                position: "absolute",
                left: "-10000px",
                top: "-10000px",
                display: "none",
                fontSize: style.fontSize,
                fontFamily: style.fontFamily,
                fontStyle: style.fontStyle,
                fontWeight: style.fontWeight,
                letterSpacing: style.letterSpacing,
                textTransform: style.textTransform,
                whiteSpace: "nowrap"
            });
            sizer.attr("class","select2-sizer");
            $(document.body).append(sizer);
        }
        sizer.text(e.val());
        return sizer.width();
    }

    function syncCssClasses(dest, src, adapter) {
        var classes, replacements = [], adapted;

        classes = $.trim(dest.attr("class"));

        if (classes) {
            classes = '' + classes; // for IE which returns object

            $(classes.split(/\s+/)).each2(function() {
                if (this.indexOf("select2-") === 0) {
                    replacements.push(this);
                }
            });
        }

        classes = $.trim(src.attr("class"));

        if (classes) {
            classes = '' + classes; // for IE which returns object

            $(classes.split(/\s+/)).each2(function() {
                if (this.indexOf("select2-") !== 0) {
                    adapted = adapter(this);

                    if (adapted) {
                        replacements.push(adapted);
                    }
                }
            });
        }

        dest.attr("class", replacements.join(" "));
    }


    function markMatch(text, term, markup, escapeMarkup) {
        var match=stripDiacritics(text.toUpperCase()).indexOf(stripDiacritics(term.toUpperCase())),
            tl=term.length;

        if (match<0) {
            markup.push(escapeMarkup(text));
            return;
        }

        markup.push(escapeMarkup(text.substring(0, match)));
        markup.push("<span class='select2-match'>");
        markup.push(escapeMarkup(text.substring(match, match + tl)));
        markup.push("</span>");
        markup.push(escapeMarkup(text.substring(match + tl, text.length)));
    }

    function defaultEscapeMarkup(markup) {
        var replace_map = {
            '\\': '&#92;',
            '&': '&amp;',
            '<': '&lt;',
            '>': '&gt;',
            '"': '&quot;',
            "'": '&#39;',
            "/": '&#47;'
        };

        return String(markup).replace(/[&<>"'\/\\]/g, function (match) {
            return replace_map[match];
        });
    }

    /**
     * Produces an ajax-based query function
     *
     * @param options object containing configuration parameters
     * @param options.params parameter map for the transport ajax call, can contain such options as cache, jsonpCallback, etc. see $.ajax
     * @param options.transport function that will be used to execute the ajax request. must be compatible with parameters supported by $.ajax
     * @param options.url url for the data
     * @param options.data a function(searchTerm, pageNumber, context) that should return an object containing query string parameters for the above url.
     * @param options.dataType request data type: ajax, jsonp, other datatypes supported by jQuery's $.ajax function or the transport function if specified
     * @param options.quietMillis (optional) milliseconds to wait before making the ajaxRequest, helps debounce the ajax function if invoked too often
     * @param options.results a function(remoteData, pageNumber, query) that converts data returned form the remote request to the format expected by Select2.
     *      The expected format is an object containing the following keys:
     *      results array of objects that will be used as choices
     *      more (optional) boolean indicating whether there are more results available
     *      Example: {results:[{id:1, text:'Red'},{id:2, text:'Blue'}], more:true}
     */
    function ajax(options) {
        var timeout, // current scheduled but not yet executed request
            handler = null,
            quietMillis = options.quietMillis || 100,
            ajaxUrl = options.url,
            self = this;

        return function (query) {
            window.clearTimeout(timeout);
            timeout = window.setTimeout(function () {
                var data = options.data, // ajax data function
                    url = ajaxUrl, // ajax url string or function
                    transport = options.transport || $.fn.select2.ajaxDefaults.transport,
                    // deprecated - to be removed in 4.0  - use params instead
                    deprecated = {
                        type: options.type || 'GET', // set type of request (GET or POST)
                        cache: options.cache || false,
                        jsonpCallback: options.jsonpCallback||undefined,
                        dataType: options.dataType||"json"
                    },
                    params = $.extend({}, $.fn.select2.ajaxDefaults.params, deprecated);

                data = data ? data.call(self, query.term, query.page, query.context) : null;
                url = (typeof url === 'function') ? url.call(self, query.term, query.page, query.context) : url;

                if (handler && typeof handler.abort === "function") { handler.abort(); }

                if (options.params) {
                    if ($.isFunction(options.params)) {
                        $.extend(params, options.params.call(self));
                    } else {
                        $.extend(params, options.params);
                    }
                }

                $.extend(params, {
                    url: url,
                    dataType: options.dataType,
                    data: data,
                    success: function (data) {
                        // TODO - replace query.page with query so users have access to term, page, etc.
                        // added query as third paramter to keep backwards compatibility
                        var results = options.results(data, query.page, query);
                        query.callback(results);
                    },
                    error: function(jqXHR, textStatus, errorThrown){
                        var results = {
                            hasError: true,
                            jqXHR: jqXHR,
                            textStatus: textStatus,
                            errorThrown: errorThrown
                        };

                        query.callback(results);
                    }
                });
                handler = transport.call(self, params);
            }, quietMillis);
        };
    }

    /**
     * Produces a query function that works with a local array
     *
     * @param options object containing configuration parameters. The options parameter can either be an array or an
     * object.
     *
     * If the array form is used it is assumed that it contains objects with 'id' and 'text' keys.
     *
     * If the object form is used it is assumed that it contains 'data' and 'text' keys. The 'data' key should contain
     * an array of objects that will be used as choices. These objects must contain at least an 'id' key. The 'text'
     * key can either be a String in which case it is expected that each element in the 'data' array has a key with the
     * value of 'text' which will be used to match choices. Alternatively, text can be a function(item) that can extract
     * the text.
     */
    function local(options) {
        var data = options, // data elements
            dataText,
            tmp,
            text = function (item) { return ""+item.text; }; // function used to retrieve the text portion of a data item that is matched against the search

         if ($.isArray(data)) {
            tmp = data;
            data = { results: tmp };
        }

         if ($.isFunction(data) === false) {
            tmp = data;
            data = function() { return tmp; };
        }

        var dataItem = data();
        if (dataItem.text) {
            text = dataItem.text;
            // if text is not a function we assume it to be a key name
            if (!$.isFunction(text)) {
                dataText = dataItem.text; // we need to store this in a separate variable because in the next step data gets reset and data.text is no longer available
                text = function (item) { return item[dataText]; };
            }
        }

        return function (query) {
            var t = query.term, filtered = { results: [] }, process;
            if (t === "") {
                query.callback(data());
                return;
            }

            process = function(datum, collection) {
                var group, attr;
                datum = datum[0];
                if (datum.children) {
                    group = {};
                    for (attr in datum) {
                        if (datum.hasOwnProperty(attr)) group[attr]=datum[attr];
                    }
                    group.children=[];
                    $(datum.children).each2(function(i, childDatum) { process(childDatum, group.children); });
                    if (group.children.length || query.matcher(t, text(group), datum)) {
                        collection.push(group);
                    }
                } else {
                    if (query.matcher(t, text(datum), datum)) {
                        collection.push(datum);
                    }
                }
            };

            $(data().results).each2(function(i, datum) { process(datum, filtered.results); });
            query.callback(filtered);
        };
    }

    // TODO javadoc
    function tags(data) {
        var isFunc = $.isFunction(data);
        return function (query) {
            var t = query.term, filtered = {results: []};
            var result = isFunc ? data(query) : data;
            if ($.isArray(result)) {
                $(result).each(function () {
                    var isObject = this.text !== undefined,
                        text = isObject ? this.text : this;
                    if (t === "" || query.matcher(t, text)) {
                        filtered.results.push(isObject ? this : {id: this, text: this});
                    }
                });
                query.callback(filtered);
            }
        };
    }

    /**
     * Checks if the formatter function should be used.
     *
     * Throws an error if it is not a function. Returns true if it should be used,
     * false if no formatting should be performed.
     *
     * @param formatter
     */
    function checkFormatter(formatter, formatterName) {
        if ($.isFunction(formatter)) return true;
        if (!formatter) return false;
        if (typeof(formatter) === 'string') return true;
        throw new Error(formatterName +" must be a string, function, or falsy value");
    }

  /**
   * Returns a given value
   * If given a function, returns its output
   *
   * @param val string|function
   * @param context value of "this" to be passed to function
   * @returns {*}
   */
    function evaluate(val, context) {
        if ($.isFunction(val)) {
            var args = Array.prototype.slice.call(arguments, 2);
            return val.apply(context, args);
        }
        return val;
    }

    function countResults(results) {
        var count = 0;
        $.each(results, function(i, item) {
            if (item.children) {
                count += countResults(item.children);
            } else {
                count++;
            }
        });
        return count;
    }

    /**
     * Default tokenizer. This function uses breaks the input on substring match of any string from the
     * opts.tokenSeparators array and uses opts.createSearchChoice to create the choice object. Both of those
     * two options have to be defined in order for the tokenizer to work.
     *
     * @param input text user has typed so far or pasted into the search field
     * @param selection currently selected choices
     * @param selectCallback function(choice) callback tho add the choice to selection
     * @param opts select2's opts
     * @return undefined/null to leave the current input unchanged, or a string to change the input to the returned value
     */
    function defaultTokenizer(input, selection, selectCallback, opts) {
        var original = input, // store the original so we can compare and know if we need to tell the search to update its text
            dupe = false, // check for whether a token we extracted represents a duplicate selected choice
            token, // token
            index, // position at which the separator was found
            i, l, // looping variables
            separator; // the matched separator

        if (!opts.createSearchChoice || !opts.tokenSeparators || opts.tokenSeparators.length < 1) return undefined;

        while (true) {
            index = -1;

            for (i = 0, l = opts.tokenSeparators.length; i < l; i++) {
                separator = opts.tokenSeparators[i];
                index = input.indexOf(separator);
                if (index >= 0) break;
            }

            if (index < 0) break; // did not find any token separator in the input string, bail

            token = input.substring(0, index);
            input = input.substring(index + separator.length);

            if (token.length > 0) {
                token = opts.createSearchChoice.call(this, token, selection);
                if (token !== undefined && token !== null && opts.id(token) !== undefined && opts.id(token) !== null) {
                    dupe = false;
                    for (i = 0, l = selection.length; i < l; i++) {
                        if (equal(opts.id(token), opts.id(selection[i]))) {
                            dupe = true; break;
                        }
                    }

                    if (!dupe) selectCallback(token);
                }
            }
        }

        if (original!==input) return input;
    }

    function cleanupJQueryElements() {
        var self = this;

        $.each(arguments, function (i, element) {
            self[element].remove();
            self[element] = null;
        });
    }

    /**
     * Creates a new class
     *
     * @param superClass
     * @param methods
     */
    function clazz(SuperClass, methods) {
        var constructor = function () {};
        constructor.prototype = new SuperClass;
        constructor.prototype.constructor = constructor;
        constructor.prototype.parent = SuperClass.prototype;
        constructor.prototype = $.extend(constructor.prototype, methods);
        return constructor;
    }

    AbstractSelect2 = clazz(Object, {

        // abstract
        bind: function (func) {
            var self = this;
            return function () {
                func.apply(self, arguments);
            };
        },

        // abstract
        init: function (opts) {
            var results, search, resultsSelector = ".select2-results";

            // prepare options
            this.opts = opts = this.prepareOpts(opts);

            this.id=opts.id;

            // destroy if called on an existing component
            if (opts.element.data("select2") !== undefined &&
                opts.element.data("select2") !== null) {
                opts.element.data("select2").destroy();
            }

            this.container = this.createContainer();

            this.liveRegion = $('.select2-hidden-accessible');
            if (this.liveRegion.length == 0) {
                this.liveRegion = $("<span>", {
                        role: "status",
                        "aria-live": "polite"
                    })
                    .addClass("select2-hidden-accessible")
                    .appendTo(document.body);
            }

            this.containerId="s2id_"+(opts.element.attr("id") || "autogen"+nextUid());
            this.containerEventName= this.containerId
                .replace(/([.])/g, '_')
                .replace(/([;&,\-\.\+\*\~':"\!\^#$%@\[\]\(\)=>\|])/g, '\\$1');
            this.container.attr("id", this.containerId);

            this.container.attr("title", opts.element.attr("title"));

            this.body = $(document.body);

            syncCssClasses(this.container, this.opts.element, this.opts.adaptContainerCssClass);

            this.container.attr("style", opts.element.attr("style"));
            this.container.css(evaluate(opts.containerCss, this.opts.element));
            this.container.addClass(evaluate(opts.containerCssClass, this.opts.element));

            this.elementTabIndex = this.opts.element.attr("tabindex");

            // swap container for the element
            this.opts.element
                .data("select2", this)
                .attr("tabindex", "-1")
                .before(this.container)
                .on("click.select2", killEvent); // do not leak click events

            this.container.data("select2", this);

            this.dropdown = this.container.find(".select2-drop");

            syncCssClasses(this.dropdown, this.opts.element, this.opts.adaptDropdownCssClass);

            this.dropdown.addClass(evaluate(opts.dropdownCssClass, this.opts.element));
            this.dropdown.data("select2", this);
            this.dropdown.on("click", killEvent);

            this.results = results = this.container.find(resultsSelector);
            this.search = search = this.container.find("input.select2-input");

            this.queryCount = 0;
            this.resultsPage = 0;
            this.context = null;

            // initialize the container
            this.initContainer();

            this.container.on("click", killEvent);

            installFilteredMouseMove(this.results);

            this.dropdown.on("mousemove-filtered", resultsSelector, this.bind(this.highlightUnderEvent));
            this.dropdown.on("touchstart touchmove touchend", resultsSelector, this.bind(function (event) {
                this._touchEvent = true;
                this.highlightUnderEvent(event);
            }));
            this.dropdown.on("touchmove", resultsSelector, this.bind(this.touchMoved));
            this.dropdown.on("touchstart touchend", resultsSelector, this.bind(this.clearTouchMoved));

            // Waiting for a click event on touch devices to select option and hide dropdown
            // otherwise click will be triggered on an underlying element
            this.dropdown.on('click', this.bind(function (event) {
                if (this._touchEvent) {
                    this._touchEvent = false;
                    this.selectHighlighted();
                }
            }));

            installDebouncedScroll(80, this.results);
            this.dropdown.on("scroll-debounced", resultsSelector, this.bind(this.loadMoreIfNeeded));

            // do not propagate change event from the search field out of the component
            $(this.container).on("change", ".select2-input", function(e) {e.stopPropagation();});
            $(this.dropdown).on("change", ".select2-input", function(e) {e.stopPropagation();});

            // if jquery.mousewheel plugin is installed we can prevent out-of-bounds scrolling of results via mousewheel
            if ($.fn.mousewheel) {
                results.mousewheel(function (e, delta, deltaX, deltaY) {
                    var top = results.scrollTop();
                    if (deltaY > 0 && top - deltaY <= 0) {
                        results.scrollTop(0);
                        killEvent(e);
                    } else if (deltaY < 0 && results.get(0).scrollHeight - results.scrollTop() + deltaY <= results.height()) {
                        results.scrollTop(results.get(0).scrollHeight - results.height());
                        killEvent(e);
                    }
                });
            }

            installKeyUpChangeEvent(search);
            search.on("keyup-change input paste", this.bind(this.updateResults));
            search.on("focus", function () { search.addClass("select2-focused"); });
            search.on("blur", function () { search.removeClass("select2-focused");});

            this.dropdown.on("mouseup", resultsSelector, this.bind(function (e) {
                if ($(e.target).closest(".select2-result-selectable").length > 0) {
                    this.highlightUnderEvent(e);
                    this.selectHighlighted(e);
                }
            }));

            // trap all mouse events from leaving the dropdown. sometimes there may be a modal that is listening
            // for mouse events outside of itself so it can close itself. since the dropdown is now outside the select2's
            // dom it will trigger the popup close, which is not what we want
            // focusin can cause focus wars between modals and select2 since the dropdown is outside the modal.
            this.dropdown.on("click mouseup mousedown touchstart touchend focusin", function (e) { e.stopPropagation(); });

            this.nextSearchTerm = undefined;

            if ($.isFunction(this.opts.initSelection)) {
                // initialize selection based on the current value of the source element
                this.initSelection();

                // if the user has provided a function that can set selection based on the value of the source element
                // we monitor the change event on the element and trigger it, allowing for two way synchronization
                this.monitorSource();
            }

            if (opts.maximumInputLength !== null) {
                this.search.attr("maxlength", opts.maximumInputLength);
            }

            var disabled = opts.element.prop("disabled");
            if (disabled === undefined) disabled = false;
            this.enable(!disabled);

            var readonly = opts.element.prop("readonly");
            if (readonly === undefined) readonly = false;
            this.readonly(readonly);

            // Calculate size of scrollbar
            scrollBarDimensions = scrollBarDimensions || measureScrollbar();

            this.autofocus = opts.element.prop("autofocus");
            opts.element.prop("autofocus", false);
            if (this.autofocus) this.focus();

            this.search.attr("placeholder", opts.searchInputPlaceholder);
        },

        // abstract
        destroy: function () {
            var element=this.opts.element, select2 = element.data("select2"), self = this;

            this.close();

            if (element.length && element[0].detachEvent && self._sync) {
                element.each(function () {
                    if (self._sync) {
                        this.detachEvent("onpropertychange", self._sync);
                    }
                });
            }
            if (this.propertyObserver) {
                this.propertyObserver.disconnect();
                this.propertyObserver = null;
            }
            this._sync = null;

            if (select2 !== undefined) {
                select2.container.remove();
                select2.liveRegion.remove();
                select2.dropdown.remove();
                element
                    .show()
                    .removeData("select2")
                    .off(".select2")
                    .prop("autofocus", this.autofocus || false);
                if (this.elementTabIndex) {
                    element.attr({tabindex: this.elementTabIndex});
                } else {
                    element.removeAttr("tabindex");
                }
                element.show();
            }

            cleanupJQueryElements.call(this,
                "container",
                "liveRegion",
                "dropdown",
                "results",
                "search"
            );
        },

        // abstract
        optionToData: function(element) {
            if (element.is("option")) {
                return {
                    id:element.prop("value"),
                    text:element.text(),
                    element: element.get(),
                    css: element.attr("class"),
                    disabled: element.prop("disabled"),
                    locked: equal(element.attr("locked"), "locked") || equal(element.data("locked"), true)
                };
            } else if (element.is("optgroup")) {
                return {
                    text:element.attr("label"),
                    children:[],
                    element: element.get(),
                    css: element.attr("class")
                };
            }
        },

        // abstract
        prepareOpts: function (opts) {
            var element, select, idKey, ajaxUrl, self = this;

            element = opts.element;

            if (element.get(0).tagName.toLowerCase() === "select") {
                this.select = select = opts.element;
            }

            if (select) {
                // these options are not allowed when attached to a select because they are picked up off the element itself
                $.each(["id", "multiple", "ajax", "query", "createSearchChoice", "initSelection", "data", "tags"], function () {
                    if (this in opts) {
                        throw new Error("Option '" + this + "' is not allowed for Select2 when attached to a <select> element.");
                    }
                });
            }

            opts = $.extend({}, {
                populateResults: function(container, results, query) {
                    var populate, id=this.opts.id, liveRegion=this.liveRegion;

                    populate=function(results, container, depth) {

                        var i, l, result, selectable, disabled, compound, node, label, innerContainer, formatted;

                        results = opts.sortResults(results, container, query);

                        // collect the created nodes for bulk append
                        var nodes = [];
                        for (i = 0, l = results.length; i < l; i = i + 1) {

                            result=results[i];

                            disabled = (result.disabled === true);
                            selectable = (!disabled) && (id(result) !== undefined);

                            compound=result.children && result.children.length > 0;

                            node=$("<li></li>");
                            node.addClass("select2-results-dept-"+depth);
                            node.addClass("select2-result");
                            node.addClass(selectable ? "select2-result-selectable" : "select2-result-unselectable");
                            if (disabled) { node.addClass("select2-disabled"); }
                            if (compound) { node.addClass("select2-result-with-children"); }
                            node.addClass(self.opts.formatResultCssClass(result));
                            node.attr("role", "presentation");

                            label=$(document.createElement("div"));
                            label.addClass("select2-result-label");
                            label.attr("id", "select2-result-label-" + nextUid());
                            label.attr("role", "option");

                            formatted=opts.formatResult(result, label, query, self.opts.escapeMarkup);
                            if (formatted!==undefined) {
                                label.html(formatted);
                                node.append(label);
                            }


                            if (compound) {

                                innerContainer=$("<ul></ul>");
                                innerContainer.addClass("select2-result-sub");
                                populate(result.children, innerContainer, depth+1);
                                node.append(innerContainer);
                            }

                            node.data("select2-data", result);
                            nodes.push(node[0]);
                        }

                        // bulk append the created nodes
                        container.append(nodes);
                        liveRegion.text(opts.formatMatches(results.length));
                    };

                    populate(results, container, 0);
                }
            }, $.fn.select2.defaults, opts);

            if (typeof(opts.id) !== "function") {
                idKey = opts.id;
                opts.id = function (e) { return e[idKey]; };
            }

            if ($.isArray(opts.element.data("select2Tags"))) {
                if ("tags" in opts) {
                    throw "tags specified as both an attribute 'data-select2-tags' and in options of Select2 " + opts.element.attr("id");
                }
                opts.tags=opts.element.data("select2Tags");
            }

            if (select) {
                opts.query = this.bind(function (query) {
                    var data = { results: [], more: false },
                        term = query.term,
                        children, placeholderOption, process;

                    process=function(element, collection) {
                        var group;
                        if (element.is("option")) {
                            if (query.matcher(term, element.text(), element)) {
                                collection.push(self.optionToData(element));
                            }
                        } else if (element.is("optgroup")) {
                            group=self.optionToData(element);
                            element.children().each2(function(i, elm) { process(elm, group.children); });
                            if (group.children.length>0) {
                                collection.push(group);
                            }
                        }
                    };

                    children=element.children();

                    // ignore the placeholder option if there is one
                    if (this.getPlaceholder() !== undefined && children.length > 0) {
                        placeholderOption = this.getPlaceholderOption();
                        if (placeholderOption) {
                            children=children.not(placeholderOption);
                        }
                    }

                    children.each2(function(i, elm) { process(elm, data.results); });

                    query.callback(data);
                });
                // this is needed because inside val() we construct choices from options and their id is hardcoded
                opts.id=function(e) { return e.id; };
            } else {
                if (!("query" in opts)) {

                    if ("ajax" in opts) {
                        ajaxUrl = opts.element.data("ajax-url");
                        if (ajaxUrl && ajaxUrl.length > 0) {
                            opts.ajax.url = ajaxUrl;
                        }
                        opts.query = ajax.call(opts.element, opts.ajax);
                    } else if ("data" in opts) {
                        opts.query = local(opts.data);
                    } else if ("tags" in opts) {
                        opts.query = tags(opts.tags);
                        if (opts.createSearchChoice === undefined) {
                            opts.createSearchChoice = function (term) { return {id: $.trim(term), text: $.trim(term)}; };
                        }
                        if (opts.initSelection === undefined) {
                            opts.initSelection = function (element, callback) {
                                var data = [];
                                $(splitVal(element.val(), opts.separator, opts.transformVal)).each(function () {
                                    var obj = { id: this, text: this },
                                        tags = opts.tags;
                                    if ($.isFunction(tags)) tags=tags();
                                    $(tags).each(function() { if (equal(this.id, obj.id)) { obj = this; return false; } });
                                    data.push(obj);
                                });

                                callback(data);
                            };
                        }
                    }
                }
            }
            if (typeof(opts.query) !== "function") {
                throw "query function not defined for Select2 " + opts.element.attr("id");
            }

            if (opts.createSearchChoicePosition === 'top') {
                opts.createSearchChoicePosition = function(list, item) { list.unshift(item); };
            }
            else if (opts.createSearchChoicePosition === 'bottom') {
                opts.createSearchChoicePosition = function(list, item) { list.push(item); };
            }
            else if (typeof(opts.createSearchChoicePosition) !== "function")  {
                throw "invalid createSearchChoicePosition option must be 'top', 'bottom' or a custom function";
            }

            return opts;
        },

        /**
         * Monitor the original element for changes and update select2 accordingly
         */
        // abstract
        monitorSource: function () {
            var el = this.opts.element, observer, self = this;

            el.on("change.select2", this.bind(function (e) {
                if (this.opts.element.data("select2-change-triggered") !== true) {
                    this.initSelection();
                }
            }));

            this._sync = this.bind(function () {

                // sync enabled state
                var disabled = el.prop("disabled");
                if (disabled === undefined) disabled = false;
                this.enable(!disabled);

                var readonly = el.prop("readonly");
                if (readonly === undefined) readonly = false;
                this.readonly(readonly);

                if (this.container) {
                    syncCssClasses(this.container, this.opts.element, this.opts.adaptContainerCssClass);
                    this.container.addClass(evaluate(this.opts.containerCssClass, this.opts.element));
                }

                if (this.dropdown) {
                    syncCssClasses(this.dropdown, this.opts.element, this.opts.adaptDropdownCssClass);
                    this.dropdown.addClass(evaluate(this.opts.dropdownCssClass, this.opts.element));
                }

            });

            // IE8-10 (IE9/10 won't fire propertyChange via attachEventListener)
            if (el.length && el[0].attachEvent) {
                el.each(function() {
                    this.attachEvent("onpropertychange", self._sync);
                });
            }

            // safari, chrome, firefox, IE11
            observer = window.MutationObserver || window.WebKitMutationObserver|| window.MozMutationObserver;
            if (observer !== undefined) {
                if (this.propertyObserver) { delete this.propertyObserver; this.propertyObserver = null; }
                this.propertyObserver = new observer(function (mutations) {
                    $.each(mutations, self._sync);
                });
                this.propertyObserver.observe(el.get(0), { attributes:true, subtree:false });
            }
        },

        // abstract
        triggerSelect: function(data) {
            var evt = $.Event("select2-selecting", { val: this.id(data), object: data, choice: data });
            this.opts.element.trigger(evt);
            return !evt.isDefaultPrevented();
        },

        /**
         * Triggers the change event on the source element
         */
        // abstract
        triggerChange: function (details) {

            details = details || {};
            details= $.extend({}, details, { type: "change", val: this.val() });
            // prevents recursive triggering
            this.opts.element.data("select2-change-triggered", true);
            this.opts.element.trigger(details);
            this.opts.element.data("select2-change-triggered", false);

            // some validation frameworks ignore the change event and listen instead to keyup, click for selects
            // so here we trigger the click event manually
            this.opts.element.click();

            // ValidationEngine ignores the change event and listens instead to blur
            // so here we trigger the blur event manually if so desired
            if (this.opts.blurOnChange)
                this.opts.element.blur();
        },

        //abstract
        isInterfaceEnabled: function()
        {
            return this.enabledInterface === true;
        },

        // abstract
        enableInterface: function() {
            var enabled = this._enabled && !this._readonly,
                disabled = !enabled;

            if (enabled === this.enabledInterface) return false;

            this.container.toggleClass("select2-container-disabled", disabled);
            this.close();
            this.enabledInterface = enabled;

            return true;
        },

        // abstract
        enable: function(enabled) {
            if (enabled === undefined) enabled = true;
            if (this._enabled === enabled) return;
            this._enabled = enabled;

            this.opts.element.prop("disabled", !enabled);
            this.enableInterface();
        },

        // abstract
        disable: function() {
            this.enable(false);
        },

        // abstract
        readonly: function(enabled) {
            if (enabled === undefined) enabled = false;
            if (this._readonly === enabled) return;
            this._readonly = enabled;

            this.opts.element.prop("readonly", enabled);
            this.enableInterface();
        },

        // abstract
        opened: function () {
            return (this.container) ? this.container.hasClass("select2-dropdown-open") : false;
        },

        // abstract
        positionDropdown: function() {
            var $dropdown = this.dropdown,
                container = this.container,
                offset = container.offset(),
                height = container.outerHeight(false),
                width = container.outerWidth(false),
                dropHeight = $dropdown.outerHeight(false),
                $window = $(window),
                windowWidth = $window.width(),
                windowHeight = $window.height(),
                viewPortRight = $window.scrollLeft() + windowWidth,
                viewportBottom = $window.scrollTop() + windowHeight,
                dropTop = offset.top + height,
                dropLeft = offset.left,
                enoughRoomBelow = dropTop + dropHeight <= viewportBottom,
                enoughRoomAbove = (offset.top - dropHeight) >= $window.scrollTop(),
                dropWidth = $dropdown.outerWidth(false),
                enoughRoomOnRight = function() {
                    return dropLeft + dropWidth <= viewPortRight;
                },
                enoughRoomOnLeft = function() {
                    return offset.left + viewPortRight + container.outerWidth(false)  > dropWidth;
                },
                aboveNow = $dropdown.hasClass("select2-drop-above"),
                bodyOffset,
                above,
                changeDirection,
                css,
                resultsListNode;

            // always prefer the current above/below alignment, unless there is not enough room
            if (aboveNow) {
                above = true;
                if (!enoughRoomAbove && enoughRoomBelow) {
                    changeDirection = true;
                    above = false;
                }
            } else {
                above = false;
                if (!enoughRoomBelow && enoughRoomAbove) {
                    changeDirection = true;
                    above = true;
                }
            }

            //if we are changing direction we need to get positions when dropdown is hidden;
            if (changeDirection) {
                $dropdown.hide();
                offset = this.container.offset();
                height = this.container.outerHeight(false);
                width = this.container.outerWidth(false);
                dropHeight = $dropdown.outerHeight(false);
                viewPortRight = $window.scrollLeft() + windowWidth;
                viewportBottom = $window.scrollTop() + windowHeight;
                dropTop = offset.top + height;
                dropLeft = offset.left;
                dropWidth = $dropdown.outerWidth(false);
                $dropdown.show();

                // fix so the cursor does not move to the left within the search-textbox in IE
                this.focusSearch();
            }

            if (this.opts.dropdownAutoWidth) {
                resultsListNode = $('.select2-results', $dropdown)[0];
                $dropdown.addClass('select2-drop-auto-width');
                $dropdown.css('width', '');
                // Add scrollbar width to dropdown if vertical scrollbar is present
                dropWidth = $dropdown.outerWidth(false) + (resultsListNode.scrollHeight === resultsListNode.clientHeight ? 0 : scrollBarDimensions.width);
                dropWidth > width ? width = dropWidth : dropWidth = width;
                dropHeight = $dropdown.outerHeight(false);
            }
            else {
                this.container.removeClass('select2-drop-auto-width');
            }

            //console.log("below/ droptop:", dropTop, "dropHeight", dropHeight, "sum", (dropTop+dropHeight)+" viewport bottom", viewportBottom, "enough?", enoughRoomBelow);
            //console.log("above/ offset.top", offset.top, "dropHeight", dropHeight, "top", (offset.top-dropHeight), "scrollTop", this.body.scrollTop(), "enough?", enoughRoomAbove);

            // fix positioning when body has an offset and is not position: static
            if (this.body.css('position') !== 'static') {
                bodyOffset = this.body.offset();
                dropTop -= bodyOffset.top;
                dropLeft -= bodyOffset.left;
            }

            if (!enoughRoomOnRight() && enoughRoomOnLeft()) {
                dropLeft = offset.left + this.container.outerWidth(false) - dropWidth;
            }

            css =  {
                left: dropLeft,
                width: width
            };

            if (above) {
                css.top = offset.top - dropHeight;
                css.bottom = 'auto';
                this.container.addClass("select2-drop-above");
                $dropdown.addClass("select2-drop-above");
            }
            else {
                css.top = dropTop;
                css.bottom = 'auto';
                this.container.removeClass("select2-drop-above");
                $dropdown.removeClass("select2-drop-above");
            }
            css = $.extend(css, evaluate(this.opts.dropdownCss, this.opts.element));

            $dropdown.css(css);
        },

        // abstract
        shouldOpen: function() {
            var event;

            if (this.opened()) return false;

            if (this._enabled === false || this._readonly === true) return false;

            event = $.Event("select2-opening");
            this.opts.element.trigger(event);
            return !event.isDefaultPrevented();
        },

        // abstract
        clearDropdownAlignmentPreference: function() {
            // clear the classes used to figure out the preference of where the dropdown should be opened
            this.container.removeClass("select2-drop-above");
            this.dropdown.removeClass("select2-drop-above");
        },

        /**
         * Opens the dropdown
         *
         * @return {Boolean} whether or not dropdown was opened. This method will return false if, for example,
         * the dropdown is already open, or if the 'open' event listener on the element called preventDefault().
         */
        // abstract
        open: function () {

            if (!this.shouldOpen()) return false;

            this.opening();

            // Only bind the document mousemove when the dropdown is visible
            $document.on("mousemove.select2Event", function (e) {
                lastMousePosition.x = e.pageX;
                lastMousePosition.y = e.pageY;
            });

            return true;
        },

        /**
         * Performs the opening of the dropdown
         */
        // abstract
        opening: function() {
            var cid = this.containerEventName,
                scroll = "scroll." + cid,
                resize = "resize."+cid,
                orient = "orientationchange."+cid,
                mask;

            this.container.addClass("select2-dropdown-open").addClass("select2-container-active");

            this.clearDropdownAlignmentPreference();

            if(this.dropdown[0] !== this.body.children().last()[0]) {
                this.dropdown.detach().appendTo(this.body);
            }

            // create the dropdown mask if doesn't already exist
            mask = $("#select2-drop-mask");
            if (mask.length === 0) {
                mask = $(document.createElement("div"));
                mask.attr("id","select2-drop-mask").attr("class","select2-drop-mask");
                mask.hide();
                mask.appendTo(this.body);
                mask.on("mousedown touchstart click", function (e) {
                    // Prevent IE from generating a click event on the body
                    reinsertElement(mask);

                    var dropdown = $("#select2-drop"), self;
                    if (dropdown.length > 0) {
                        self=dropdown.data("select2");
                        if (self.opts.selectOnBlur) {
                            self.selectHighlighted({noFocus: true});
                        }
                        self.close();
                        e.preventDefault();
                        e.stopPropagation();
                    }
                });
            }

            // ensure the mask is always right before the dropdown
            if (this.dropdown.prev()[0] !== mask[0]) {
                this.dropdown.before(mask);
            }

            // move the global id to the correct dropdown
            $("#select2-drop").removeAttr("id");
            this.dropdown.attr("id", "select2-drop");

            // show the elements
            mask.show();

            this.positionDropdown();
            this.dropdown.show();
            this.positionDropdown();

            this.dropdown.addClass("select2-drop-active");

            // attach listeners to events that can change the position of the container and thus require
            // the position of the dropdown to be updated as well so it does not come unglued from the container
            var that = this;
            this.container.parents().add(window).each(function () {
                $(this).on(resize+" "+scroll+" "+orient, function (e) {
                    if (that.opened()) that.positionDropdown();
                });
            });


        },

        // abstract
        close: function () {
            if (!this.opened()) return;

            var cid = this.containerEventName,
                scroll = "scroll." + cid,
                resize = "resize."+cid,
                orient = "orientationchange."+cid;

            // unbind event listeners
            this.container.parents().add(window).each(function () { $(this).off(scroll).off(resize).off(orient); });

            this.clearDropdownAlignmentPreference();

            $("#select2-drop-mask").hide();
            this.dropdown.removeAttr("id"); // only the active dropdown has the select2-drop id
            this.dropdown.hide();
            this.container.removeClass("select2-dropdown-open").removeClass("select2-container-active");
            this.results.empty();

            // Now that the dropdown is closed, unbind the global document mousemove event
            $document.off("mousemove.select2Event");

            this.clearSearch();
            this.search.removeClass("select2-active");
            this.opts.element.trigger($.Event("select2-close"));
        },

        /**
         * Opens control, sets input value, and updates results.
         */
        // abstract
        externalSearch: function (term) {
            this.open();
            this.search.val(term);
            this.updateResults(false);
        },

        // abstract
        clearSearch: function () {

        },

        //abstract
        getMaximumSelectionSize: function() {
            return evaluate(this.opts.maximumSelectionSize, this.opts.element);
        },

        // abstract
        ensureHighlightVisible: function () {
            var results = this.results, children, index, child, hb, rb, y, more, topOffset;

            index = this.highlight();

            if (index < 0) return;

            if (index == 0) {

                // if the first element is highlighted scroll all the way to the top,
                // that way any unselectable headers above it will also be scrolled
                // into view

                results.scrollTop(0);
                return;
            }

            children = this.findHighlightableChoices().find('.select2-result-label');

            child = $(children[index]);

            topOffset = (child.offset() || {}).top || 0;

            hb = topOffset + child.outerHeight(true);

            // if this is the last child lets also make sure select2-more-results is visible
            if (index === children.length - 1) {
                more = results.find("li.select2-more-results");
                if (more.length > 0) {
                    hb = more.offset().top + more.outerHeight(true);
                }
            }

            rb = results.offset().top + results.outerHeight(false);
            if (hb > rb) {
                results.scrollTop(results.scrollTop() + (hb - rb));
            }
            y = topOffset - results.offset().top;

            // make sure the top of the element is visible
            if (y < 0 && child.css('display') != 'none' ) {
                results.scrollTop(results.scrollTop() + y); // y is negative
            }
        },

        // abstract
        findHighlightableChoices: function() {
            return this.results.find(".select2-result-selectable:not(.select2-disabled):not(.select2-selected)");
        },

        // abstract
        moveHighlight: function (delta) {
            var choices = this.findHighlightableChoices(),
                index = this.highlight();

            while (index > -1 && index < choices.length) {
                index += delta;
                var choice = $(choices[index]);
                if (choice.hasClass("select2-result-selectable") && !choice.hasClass("select2-disabled") && !choice.hasClass("select2-selected")) {
                    this.highlight(index);
                    break;
                }
            }
        },

        // abstract
        highlight: function (index) {
            var choices = this.findHighlightableChoices(),
                choice,
                data;

            if (arguments.length === 0) {
                return indexOf(choices.filter(".select2-highlighted")[0], choices.get());
            }

            if (index >= choices.length) index = choices.length - 1;
            if (index < 0) index = 0;

            this.removeHighlight();

            choice = $(choices[index]);
            choice.addClass("select2-highlighted");

            // ensure assistive technology can determine the active choice
            this.search.attr("aria-activedescendant", choice.find(".select2-result-label").attr("id"));

            this.ensureHighlightVisible();

            this.liveRegion.text(choice.text());

            data = choice.data("select2-data");
            if (data) {
                this.opts.element.trigger({ type: "select2-highlight", val: this.id(data), choice: data });
            }
        },

        removeHighlight: function() {
            this.results.find(".select2-highlighted").removeClass("select2-highlighted");
        },

        touchMoved: function() {
            this._touchMoved = true;
        },

        clearTouchMoved: function() {
          this._touchMoved = false;
        },

        // abstract
        countSelectableResults: function() {
            return this.findHighlightableChoices().length;
        },

        // abstract
        highlightUnderEvent: function (event) {
            var el = $(event.target).closest(".select2-result-selectable");
            if (el.length > 0 && !el.is(".select2-highlighted")) {
                var choices = this.findHighlightableChoices();
                this.highlight(choices.index(el));
            } else if (el.length == 0) {
                // if we are over an unselectable item remove all highlights
                this.removeHighlight();
            }
        },

        // abstract
        loadMoreIfNeeded: function () {
            var results = this.results,
                more = results.find("li.select2-more-results"),
                below, // pixels the element is below the scroll fold, below==0 is when the element is starting to be visible
                page = this.resultsPage + 1,
                self=this,
                term=this.search.val(),
                context=this.context;

            if (more.length === 0) return;
            below = more.offset().top - results.offset().top - results.height();

            if (below <= this.opts.loadMorePadding) {
                more.addClass("select2-active");
                this.opts.query({
                        element: this.opts.element,
                        term: term,
                        page: page,
                        context: context,
                        matcher: this.opts.matcher,
                        callback: this.bind(function (data) {

                    // ignore a response if the select2 has been closed before it was received
                    if (!self.opened()) return;


                    self.opts.populateResults.call(this, results, data.results, {term: term, page: page, context:context});
                    self.postprocessResults(data, false, false);

                    if (data.more===true) {
                        more.detach().appendTo(results).html(self.opts.escapeMarkup(evaluate(self.opts.formatLoadMore, self.opts.element, page+1)));
                        window.setTimeout(function() { self.loadMoreIfNeeded(); }, 10);
                    } else {
                        more.remove();
                    }
                    self.positionDropdown();
                    self.resultsPage = page;
                    self.context = data.context;
                    this.opts.element.trigger({ type: "select2-loaded", items: data });
                })});
            }
        },

        /**
         * Default tokenizer function which does nothing
         */
        tokenize: function() {

        },

        /**
         * @param initial whether or not this is the call to this method right after the dropdown has been opened
         */
        // abstract
        updateResults: function (initial) {
            var search = this.search,
                results = this.results,
                opts = this.opts,
                data,
                self = this,
                input,
                term = search.val(),
                lastTerm = $.data(this.container, "select2-last-term"),
                // sequence number used to drop out-of-order responses
                queryNumber;

            // prevent duplicate queries against the same term
            if (initial !== true && lastTerm && equal(term, lastTerm)) return;

            $.data(this.container, "select2-last-term", term);

            // if the search is currently hidden we do not alter the results
            if (initial !== true && (this.showSearchInput === false || !this.opened())) {
                return;
            }

            function postRender() {
                search.removeClass("select2-active");
                self.positionDropdown();
                if (results.find('.select2-no-results,.select2-selection-limit,.select2-searching').length) {
                    self.liveRegion.text(results.text());
                }
                else {
                    self.liveRegion.text(self.opts.formatMatches(results.find('.select2-result-selectable:not(".select2-selected")').length));
                }
            }

            function render(html) {
                results.html(html);
                postRender();
            }

            queryNumber = ++this.queryCount;

            var maxSelSize = this.getMaximumSelectionSize();
            if (maxSelSize >=1) {
                data = this.data();
                if ($.isArray(data) && data.length >= maxSelSize && checkFormatter(opts.formatSelectionTooBig, "formatSelectionTooBig")) {
                    render("<li class='select2-selection-limit'>" + evaluate(opts.formatSelectionTooBig, opts.element, maxSelSize) + "</li>");
                    return;
                }
            }

            if (search.val().length < opts.minimumInputLength) {
                if (checkFormatter(opts.formatInputTooShort, "formatInputTooShort")) {
                    render("<li class='select2-no-results'>" + evaluate(opts.formatInputTooShort, opts.element, search.val(), opts.minimumInputLength) + "</li>");
                } else {
                    render("");
                }
                if (initial && this.showSearch) this.showSearch(true);
                return;
            }

            if (opts.maximumInputLength && search.val().length > opts.maximumInputLength) {
                if (checkFormatter(opts.formatInputTooLong, "formatInputTooLong")) {
                    render("<li class='select2-no-results'>" + evaluate(opts.formatInputTooLong, opts.element, search.val(), opts.maximumInputLength) + "</li>");
                } else {
                    render("");
                }
                return;
            }

            if (opts.formatSearching && this.findHighlightableChoices().length === 0) {
                render("<li class='select2-searching'>" + evaluate(opts.formatSearching, opts.element) + "</li>");
            }

            search.addClass("select2-active");

            this.removeHighlight();

            // give the tokenizer a chance to pre-process the input
            input = this.tokenize();
            if (input != undefined && input != null) {
                search.val(input);
            }

            this.resultsPage = 1;

            opts.query({
                element: opts.element,
                    term: search.val(),
                    page: this.resultsPage,
                    context: null,
                    matcher: opts.matcher,
                    callback: this.bind(function (data) {
                var def; // default choice

                // ignore old responses
                if (queryNumber != this.queryCount) {
                  return;
                }

                // ignore a response if the select2 has been closed before it was received
                if (!this.opened()) {
                    this.search.removeClass("select2-active");
                    return;
                }

                // handle ajax error
                if(data.hasError !== undefined && checkFormatter(opts.formatAjaxError, "formatAjaxError")) {
                    render("<li class='select2-ajax-error'>" + evaluate(opts.formatAjaxError, opts.element, data.jqXHR, data.textStatus, data.errorThrown) + "</li>");
                    return;
                }

                // save context, if any
                this.context = (data.context===undefined) ? null : data.context;
                // create a default choice and prepend it to the list
                if (this.opts.createSearchChoice && search.val() !== "") {
                    def = this.opts.createSearchChoice.call(self, search.val(), data.results);
                    if (def !== undefined && def !== null && self.id(def) !== undefined && self.id(def) !== null) {
                        if ($(data.results).filter(
                            function () {
                                return equal(self.id(this), self.id(def));
                            }).length === 0) {
                            this.opts.createSearchChoicePosition(data.results, def);
                        }
                    }
                }

                if (data.results.length === 0 && checkFormatter(opts.formatNoMatches, "formatNoMatches")) {
                    render("<li class='select2-no-results'>" + evaluate(opts.formatNoMatches, opts.element, search.val()) + "</li>");
                    return;
                }

                results.empty();
                self.opts.populateResults.call(this, results, data.results, {term: search.val(), page: this.resultsPage, context:null});

                if (data.more === true && checkFormatter(opts.formatLoadMore, "formatLoadMore")) {
                    results.append("<li class='select2-more-results'>" + opts.escapeMarkup(evaluate(opts.formatLoadMore, opts.element, this.resultsPage)) + "</li>");
                    window.setTimeout(function() { self.loadMoreIfNeeded(); }, 10);
                }

                this.postprocessResults(data, initial);

                postRender();

                this.opts.element.trigger({ type: "select2-loaded", items: data });
            })});
        },

        // abstract
        cancel: function () {
            this.close();
        },

        // abstract
        blur: function () {
            // if selectOnBlur == true, select the currently highlighted option
            if (this.opts.selectOnBlur)
                this.selectHighlighted({noFocus: true});

            this.close();
            this.container.removeClass("select2-container-active");
            // synonymous to .is(':focus'), which is available in jquery >= 1.6
            if (this.search[0] === document.activeElement) { this.search.blur(); }
            this.clearSearch();
            this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
        },

        // abstract
        focusSearch: function () {
            focus(this.search);
        },

        // abstract
        selectHighlighted: function (options) {
            if (this._touchMoved) {
              this.clearTouchMoved();
              return;
            }
            var index=this.highlight(),
                highlighted=this.results.find(".select2-highlighted"),
                data = highlighted.closest('.select2-result').data("select2-data");

            if (data) {
                this.highlight(index);
                this.onSelect(data, options);
            } else if (options && options.noFocus) {
                this.close();
            }
        },

        // abstract
        getPlaceholder: function () {
            var placeholderOption;
            return this.opts.element.attr("placeholder") ||
                this.opts.element.attr("data-placeholder") || // jquery 1.4 compat
                this.opts.element.data("placeholder") ||
                this.opts.placeholder ||
                ((placeholderOption = this.getPlaceholderOption()) !== undefined ? placeholderOption.text() : undefined);
        },

        // abstract
        getPlaceholderOption: function() {
            if (this.select) {
                var firstOption = this.select.children('option').first();
                if (this.opts.placeholderOption !== undefined ) {
                    //Determine the placeholder option based on the specified placeholderOption setting
                    return (this.opts.placeholderOption === "first" && firstOption) ||
                           (typeof this.opts.placeholderOption === "function" && this.opts.placeholderOption(this.select));
                } else if ($.trim(firstOption.text()) === "" && firstOption.val() === "") {
                    //No explicit placeholder option specified, use the first if it's blank
                    return firstOption;
                }
            }
        },

        /**
         * Get the desired width for the container element.  This is
         * derived first from option `width` passed to select2, then
         * the inline 'style' on the original element, and finally
         * falls back to the jQuery calculated element width.
         */
        // abstract
        initContainerWidth: function () {
            function resolveContainerWidth() {
                var style, attrs, matches, i, l, attr;

                if (this.opts.width === "off") {
                    return null;
                } else if (this.opts.width === "element"){
                    return this.opts.element.outerWidth(false) === 0 ? 'auto' : this.opts.element.outerWidth(false) + 'px';
                } else if (this.opts.width === "copy" || this.opts.width === "resolve") {
                    // check if there is inline style on the element that contains width
                    style = this.opts.element.attr('style');
                    if (style !== undefined) {
                        attrs = style.split(';');
                        for (i = 0, l = attrs.length; i < l; i = i + 1) {
                            attr = attrs[i].replace(/\s/g, '');
                            matches = attr.match(/^width:(([-+]?([0-9]*\.)?[0-9]+)(px|em|ex|%|in|cm|mm|pt|pc))/i);
                            if (matches !== null && matches.length >= 1)
                                return matches[1];
                        }
                    }

                    if (this.opts.width === "resolve") {
                        // next check if css('width') can resolve a width that is percent based, this is sometimes possible
                        // when attached to input type=hidden or elements hidden via css
                        style = this.opts.element.css('width');
                        if (style.indexOf("%") > 0) return style;

                        // finally, fallback on the calculated width of the element
                        return (this.opts.element.outerWidth(false) === 0 ? 'auto' : this.opts.element.outerWidth(false) + 'px');
                    }

                    return null;
                } else if ($.isFunction(this.opts.width)) {
                    return this.opts.width();
                } else {
                    return this.opts.width;
               }
            };

            var width = resolveContainerWidth.call(this);
            if (width !== null) {
                this.container.css("width", width);
            }
        }
    });

    SingleSelect2 = clazz(AbstractSelect2, {

        // single

        createContainer: function () {
            var container = $(document.createElement("div")).attr({
                "class": "select2-container"
            }).html([
                "<a href='javascript:void(0)' class='select2-choice' tabindex='-1'>",
                "   <span class='select2-chosen'>&#160;</span><abbr class='select2-search-choice-close'></abbr>",
                "   <span class='select2-arrow' role='presentation'><b role='presentation'></b></span>",
                "</a>",
                "<label for='' class='select2-offscreen'></label>",
                "<input class='select2-focusser select2-offscreen' type='text' aria-haspopup='true' role='button' />",
                "<div class='select2-drop select2-display-none'>",
                "   <div class='select2-search'>",
                "       <label for='' class='select2-offscreen'></label>",
                "       <input type='text' autocomplete='off' autocorrect='off' autocapitalize='off' spellcheck='false' class='select2-input' role='combobox' aria-expanded='true'",
                "       aria-autocomplete='list' />",
                "   </div>",
                "   <ul class='select2-results' role='listbox'>",
                "   </ul>",
                "</div>"].join(""));
            return container;
        },

        // single
        enableInterface: function() {
            if (this.parent.enableInterface.apply(this, arguments)) {
                this.focusser.prop("disabled", !this.isInterfaceEnabled());
            }
        },

        // single
        opening: function () {
            var el, range, len;

            if (this.opts.minimumResultsForSearch >= 0) {
                this.showSearch(true);
            }

            this.parent.opening.apply(this, arguments);

            if (this.showSearchInput !== false) {
                // IE appends focusser.val() at the end of field :/ so we manually insert it at the beginning using a range
                // all other browsers handle this just fine

                this.search.val(this.focusser.val());
            }
            if (this.opts.shouldFocusInput(this)) {
                this.search.focus();
                // move the cursor to the end after focussing, otherwise it will be at the beginning and
                // new text will appear *before* focusser.val()
                el = this.search.get(0);
                if (el.createTextRange) {
                    range = el.createTextRange();
                    range.collapse(false);
                    range.select();
                } else if (el.setSelectionRange) {
                    len = this.search.val().length;
                    el.setSelectionRange(len, len);
                }
            }

            // initializes search's value with nextSearchTerm (if defined by user)
            // ignore nextSearchTerm if the dropdown is opened by the user pressing a letter
            if(this.search.val() === "") {
                if(this.nextSearchTerm != undefined){
                    this.search.val(this.nextSearchTerm);
                    this.search.select();
                }
            }

            this.focusser.prop("disabled", true).val("");
            this.updateResults(true);
            this.opts.element.trigger($.Event("select2-open"));
        },

        // single
        close: function () {
            if (!this.opened()) return;
            this.parent.close.apply(this, arguments);

            this.focusser.prop("disabled", false);

            if (this.opts.shouldFocusInput(this)) {
                this.focusser.focus();
            }
        },

        // single
        focus: function () {
            if (this.opened()) {
                this.close();
            } else {
                this.focusser.prop("disabled", false);
                if (this.opts.shouldFocusInput(this)) {
                    this.focusser.focus();
                }
            }
        },

        // single
        isFocused: function () {
            return this.container.hasClass("select2-container-active");
        },

        // single
        cancel: function () {
            this.parent.cancel.apply(this, arguments);
            this.focusser.prop("disabled", false);

            if (this.opts.shouldFocusInput(this)) {
                this.focusser.focus();
            }
        },

        // single
        destroy: function() {
            $("label[for='" + this.focusser.attr('id') + "']")
                .attr('for', this.opts.element.attr("id"));
            this.parent.destroy.apply(this, arguments);

            cleanupJQueryElements.call(this,
                "selection",
                "focusser"
            );
        },

        // single
        initContainer: function () {

            var selection,
                container = this.container,
                dropdown = this.dropdown,
                idSuffix = nextUid(),
                elementLabel;

            if (this.opts.minimumResultsForSearch < 0) {
                this.showSearch(false);
            } else {
                this.showSearch(true);
            }

            this.selection = selection = container.find(".select2-choice");

            this.focusser = container.find(".select2-focusser");

            // add aria associations
            selection.find(".select2-chosen").attr("id", "select2-chosen-"+idSuffix);
            this.focusser.attr("aria-labelledby", "select2-chosen-"+idSuffix);
            this.results.attr("id", "select2-results-"+idSuffix);
            this.search.attr("aria-owns", "select2-results-"+idSuffix);

            // rewrite labels from original element to focusser
            this.focusser.attr("id", "s2id_autogen"+idSuffix);

            elementLabel = $("label[for='" + this.opts.element.attr("id") + "']");
            this.opts.element.focus(this.bind(function () { this.focus(); }));

            this.focusser.prev()
                .text(elementLabel.text())
                .attr('for', this.focusser.attr('id'));

            // Ensure the original element retains an accessible name
            var originalTitle = this.opts.element.attr("title");
            this.opts.element.attr("title", (originalTitle || elementLabel.text()));

            this.focusser.attr("tabindex", this.elementTabIndex);

            // write label for search field using the label from the focusser element
            this.search.attr("id", this.focusser.attr('id') + '_search');

            this.search.prev()
                .text($("label[for='" + this.focusser.attr('id') + "']").text())
                .attr('for', this.search.attr('id'));

            this.search.on("keydown", this.bind(function (e) {
                if (!this.isInterfaceEnabled()) return;

                // filter 229 keyCodes (input method editor is processing key input)
                if (229 == e.keyCode) return;

                if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN) {
                    // prevent the page from scrolling
                    killEvent(e);
                    return;
                }

                switch (e.which) {
                    case KEY.UP:
                    case KEY.DOWN:
                        this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
                        killEvent(e);
                        return;
                    case KEY.ENTER:
                        this.selectHighlighted();
                        killEvent(e);
                        return;
                    case KEY.TAB:
                        this.selectHighlighted({noFocus: true});
                        return;
                    case KEY.ESC:
                        this.cancel(e);
                        killEvent(e);
                        return;
                }
            }));

            this.search.on("blur", this.bind(function(e) {
                // a workaround for chrome to keep the search field focussed when the scroll bar is used to scroll the dropdown.
                // without this the search field loses focus which is annoying
                if (document.activeElement === this.body.get(0)) {
                    window.setTimeout(this.bind(function() {
                        if (this.opened()) {
                            this.search.focus();
                        }
                    }), 0);
                }
            }));

            this.focusser.on("keydown", this.bind(function (e) {
                if (!this.isInterfaceEnabled()) return;

                if (e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e) || e.which === KEY.ESC) {
                    return;
                }

                if (this.opts.openOnEnter === false && e.which === KEY.ENTER) {
                    killEvent(e);
                    return;
                }

                if (e.which == KEY.DOWN || e.which == KEY.UP
                    || (e.which == KEY.ENTER && this.opts.openOnEnter)) {

                    if (e.altKey || e.ctrlKey || e.shiftKey || e.metaKey) return;

                    this.open();
                    killEvent(e);
                    return;
                }

                if (e.which == KEY.DELETE || e.which == KEY.BACKSPACE) {
                    if (this.opts.allowClear) {
                        this.clear();
                    }
                    killEvent(e);
                    return;
                }
            }));


            installKeyUpChangeEvent(this.focusser);
            this.focusser.on("keyup-change input", this.bind(function(e) {
                if (this.opts.minimumResultsForSearch >= 0) {
                    e.stopPropagation();
                    if (this.opened()) return;
                    this.open();
                }
            }));

            selection.on("mousedown touchstart", "abbr", this.bind(function (e) {
                if (!this.isInterfaceEnabled()) {
                    return;
                }

                this.clear();
                killEventImmediately(e);
                this.close();

                if (this.selection) {
                    this.selection.focus();
                }
            }));

            selection.on("mousedown touchstart", this.bind(function (e) {
                // Prevent IE from generating a click event on the body
                reinsertElement(selection);

                if (!this.container.hasClass("select2-container-active")) {
                    this.opts.element.trigger($.Event("select2-focus"));
                }

                if (this.opened()) {
                    this.close();
                } else if (this.isInterfaceEnabled()) {
                    this.open();
                }

                killEvent(e);
            }));

            dropdown.on("mousedown touchstart", this.bind(function() {
                if (this.opts.shouldFocusInput(this)) {
                    this.search.focus();
                }
            }));

            selection.on("focus", this.bind(function(e) {
                killEvent(e);
            }));

            this.focusser.on("focus", this.bind(function(){
                if (!this.container.hasClass("select2-container-active")) {
                    this.opts.element.trigger($.Event("select2-focus"));
                }
                this.container.addClass("select2-container-active");
            })).on("blur", this.bind(function() {
                if (!this.opened()) {
                    this.container.removeClass("select2-container-active");
                    this.opts.element.trigger($.Event("select2-blur"));
                }
            }));
            this.search.on("focus", this.bind(function(){
                if (!this.container.hasClass("select2-container-active")) {
                    this.opts.element.trigger($.Event("select2-focus"));
                }
                this.container.addClass("select2-container-active");
            }));

            this.initContainerWidth();
            this.opts.element.hide();
            this.setPlaceholder();

        },

        // single
        clear: function(triggerChange) {
            var data=this.selection.data("select2-data");
            if (data) { // guard against queued quick consecutive clicks
                var evt = $.Event("select2-clearing");
                this.opts.element.trigger(evt);
                if (evt.isDefaultPrevented()) {
                    return;
                }
                var placeholderOption = this.getPlaceholderOption();
                this.opts.element.val(placeholderOption ? placeholderOption.val() : "");
                this.selection.find(".select2-chosen").empty();
                this.selection.removeData("select2-data");
                this.setPlaceholder();

                if (triggerChange !== false){
                    this.opts.element.trigger({ type: "select2-removed", val: this.id(data), choice: data });
                    this.triggerChange({removed:data});
                }
            }
        },

        /**
         * Sets selection based on source element's value
         */
        // single
        initSelection: function () {
            var selected;
            if (this.isPlaceholderOptionSelected()) {
                this.updateSelection(null);
                this.close();
                this.setPlaceholder();
            } else {
                var self = this;
                this.opts.initSelection.call(null, this.opts.element, function(selected){
                    if (selected !== undefined && selected !== null) {
                        self.updateSelection(selected);
                        self.close();
                        self.setPlaceholder();
                        self.nextSearchTerm = self.opts.nextSearchTerm(selected, self.search.val());
                    }
                });
            }
        },

        isPlaceholderOptionSelected: function() {
            var placeholderOption;
            if (this.getPlaceholder() === undefined) return false; // no placeholder specified so no option should be considered
            return ((placeholderOption = this.getPlaceholderOption()) !== undefined && placeholderOption.prop("selected"))
                || (this.opts.element.val() === "")
                || (this.opts.element.val() === undefined)
                || (this.opts.element.val() === null);
        },

        // single
        prepareOpts: function () {
            var opts = this.parent.prepareOpts.apply(this, arguments),
                self=this;

            if (opts.element.get(0).tagName.toLowerCase() === "select") {
                // install the selection initializer
                opts.initSelection = function (element, callback) {
                    var selected = element.find("option").filter(function() { return this.selected && !this.disabled });
                    // a single select box always has a value, no need to null check 'selected'
                    callback(self.optionToData(selected));
                };
            } else if ("data" in opts) {
                // install default initSelection when applied to hidden input and data is local
                opts.initSelection = opts.initSelection || function (element, callback) {
                    var id = element.val();
                    //search in data by id, storing the actual matching item
                    var match = null;
                    opts.query({
                        matcher: function(term, text, el){
                            var is_match = equal(id, opts.id(el));
                            if (is_match) {
                                match = el;
                            }
                            return is_match;
                        },
                        callback: !$.isFunction(callback) ? $.noop : function() {
                            callback(match);
                        }
                    });
                };
            }

            return opts;
        },

        // single
        getPlaceholder: function() {
            // if a placeholder is specified on a single select without a valid placeholder option ignore it
            if (this.select) {
                if (this.getPlaceholderOption() === undefined) {
                    return undefined;
                }
            }

            return this.parent.getPlaceholder.apply(this, arguments);
        },

        // single
        setPlaceholder: function () {
            var placeholder = this.getPlaceholder();

            if (this.isPlaceholderOptionSelected() && placeholder !== undefined) {

                // check for a placeholder option if attached to a select
                if (this.select && this.getPlaceholderOption() === undefined) return;

                this.selection.find(".select2-chosen").html(this.opts.escapeMarkup(placeholder));

                this.selection.addClass("select2-default");

                this.container.removeClass("select2-allowclear");
            }
        },

        // single
        postprocessResults: function (data, initial, noHighlightUpdate) {
            var selected = 0, self = this, showSearchInput = true;

            // find the selected element in the result list

            this.findHighlightableChoices().each2(function (i, elm) {
                if (equal(self.id(elm.data("select2-data")), self.opts.element.val())) {
                    selected = i;
                    return false;
                }
            });

            // and highlight it
            if (noHighlightUpdate !== false) {
                if (initial === true && selected >= 0) {
                    this.highlight(selected);
                } else {
                    this.highlight(0);
                }
            }

            // hide the search box if this is the first we got the results and there are enough of them for search

            if (initial === true) {
                var min = this.opts.minimumResultsForSearch;
                if (min >= 0) {
                    this.showSearch(countResults(data.results) >= min);
                }
            }
        },

        // single
        showSearch: function(showSearchInput) {
            if (this.showSearchInput === showSearchInput) return;

            this.showSearchInput = showSearchInput;

            this.dropdown.find(".select2-search").toggleClass("select2-search-hidden", !showSearchInput);
            this.dropdown.find(".select2-search").toggleClass("select2-offscreen", !showSearchInput);
            //add "select2-with-searchbox" to the container if search box is shown
            $(this.dropdown, this.container).toggleClass("select2-with-searchbox", showSearchInput);
        },

        // single
        onSelect: function (data, options) {

            if (!this.triggerSelect(data)) { return; }

            var old = this.opts.element.val(),
                oldData = this.data();

            this.opts.element.val(this.id(data));
            this.updateSelection(data);

            this.opts.element.trigger({ type: "select2-selected", val: this.id(data), choice: data });

            this.nextSearchTerm = this.opts.nextSearchTerm(data, this.search.val());
            this.close();

            if ((!options || !options.noFocus) && this.opts.shouldFocusInput(this)) {
                this.focusser.focus();
            }

            if (!equal(old, this.id(data))) {
                this.triggerChange({ added: data, removed: oldData });
            }
        },

        // single
        updateSelection: function (data) {

            var container=this.selection.find(".select2-chosen"), formatted, cssClass;

            this.selection.data("select2-data", data);

            container.empty();
            if (data !== null) {
                formatted=this.opts.formatSelection(data, container, this.opts.escapeMarkup);
            }
            if (formatted !== undefined) {
                container.append(formatted);
            }
            cssClass=this.opts.formatSelectionCssClass(data, container);
            if (cssClass !== undefined) {
                container.addClass(cssClass);
            }

            this.selection.removeClass("select2-default");

            if (this.opts.allowClear && this.getPlaceholder() !== undefined) {
                this.container.addClass("select2-allowclear");
            }
        },

        // single
        val: function () {
            var val,
                triggerChange = false,
                data = null,
                self = this,
                oldData = this.data();

            if (arguments.length === 0) {
                return this.opts.element.val();
            }

            val = arguments[0];

            if (arguments.length > 1) {
                triggerChange = arguments[1];
            }

            if (this.select) {
                this.select
                    .val(val)
                    .find("option").filter(function() { return this.selected }).each2(function (i, elm) {
                        data = self.optionToData(elm);
                        return false;
                    });
                this.updateSelection(data);
                this.setPlaceholder();
                if (triggerChange) {
                    this.triggerChange({added: data, removed:oldData});
                }
            } else {
                // val is an id. !val is true for [undefined,null,'',0] - 0 is legal
                if (!val && val !== 0) {
                    this.clear(triggerChange);
                    return;
                }
                if (this.opts.initSelection === undefined) {
                    throw new Error("cannot call val() if initSelection() is not defined");
                }
                this.opts.element.val(val);
                this.opts.initSelection(this.opts.element, function(data){
                    self.opts.element.val(!data ? "" : self.id(data));
                    self.updateSelection(data);
                    self.setPlaceholder();
                    if (triggerChange) {
                        self.triggerChange({added: data, removed:oldData});
                    }
                });
            }
        },

        // single
        clearSearch: function () {
            this.search.val("");
            this.focusser.val("");
        },

        // single
        data: function(value) {
            var data,
                triggerChange = false;

            if (arguments.length === 0) {
                data = this.selection.data("select2-data");
                if (data == undefined) data = null;
                return data;
            } else {
                if (arguments.length > 1) {
                    triggerChange = arguments[1];
                }
                if (!value) {
                    this.clear(triggerChange);
                } else {
                    data = this.data();
                    this.opts.element.val(!value ? "" : this.id(value));
                    this.updateSelection(value);
                    if (triggerChange) {
                        this.triggerChange({added: value, removed:data});
                    }
                }
            }
        }
    });

    MultiSelect2 = clazz(AbstractSelect2, {

        // multi
        createContainer: function () {
            var container = $(document.createElement("div")).attr({
                "class": "select2-container select2-container-multi"
            }).html([
                "<ul class='select2-choices'>",
                "  <li class='select2-search-field'>",
                "    <label for='' class='select2-offscreen'></label>",
                "    <input type='text' autocomplete='off' autocorrect='off' autocapitalize='off' spellcheck='false' class='select2-input'>",
                "  </li>",
                "</ul>",
                "<div class='select2-drop select2-drop-multi select2-display-none'>",
                "   <ul class='select2-results'>",
                "   </ul>",
                "</div>"].join(""));
            return container;
        },

        // multi
        prepareOpts: function () {
            var opts = this.parent.prepareOpts.apply(this, arguments),
                self=this;

            // TODO validate placeholder is a string if specified
            if (opts.element.get(0).tagName.toLowerCase() === "select") {
                // install the selection initializer
                opts.initSelection = function (element, callback) {

                    var data = [];

                    element.find("option").filter(function() { return this.selected && !this.disabled }).each2(function (i, elm) {
                        data.push(self.optionToData(elm));
                    });
                    callback(data);
                };
            } else if ("data" in opts) {
                // install default initSelection when applied to hidden input and data is local
                opts.initSelection = opts.initSelection || function (element, callback) {
                    var ids = splitVal(element.val(), opts.separator, opts.transformVal);
                    //search in data by array of ids, storing matching items in a list
                    var matches = [];
                    opts.query({
                        matcher: function(term, text, el){
                            var is_match = $.grep(ids, function(id) {
                                return equal(id, opts.id(el));
                            }).length;
                            if (is_match) {
                                matches.push(el);
                            }
                            return is_match;
                        },
                        callback: !$.isFunction(callback) ? $.noop : function() {
                            // reorder matches based on the order they appear in the ids array because right now
                            // they are in the order in which they appear in data array
                            var ordered = [];
                            for (var i = 0; i < ids.length; i++) {
                                var id = ids[i];
                                for (var j = 0; j < matches.length; j++) {
                                    var match = matches[j];
                                    if (equal(id, opts.id(match))) {
                                        ordered.push(match);
                                        matches.splice(j, 1);
                                        break;
                                    }
                                }
                            }
                            callback(ordered);
                        }
                    });
                };
            }

            return opts;
        },

        // multi
        selectChoice: function (choice) {

            var selected = this.container.find(".select2-search-choice-focus");
            if (selected.length && choice && choice[0] == selected[0]) {

            } else {
                if (selected.length) {
                    this.opts.element.trigger("choice-deselected", selected);
                }
                selected.removeClass("select2-search-choice-focus");
                if (choice && choice.length) {
                    this.close();
                    choice.addClass("select2-search-choice-focus");
                    this.opts.element.trigger("choice-selected", choice);
                }
            }
        },

        // multi
        destroy: function() {
            $("label[for='" + this.search.attr('id') + "']")
                .attr('for', this.opts.element.attr("id"));
            this.parent.destroy.apply(this, arguments);

            cleanupJQueryElements.call(this,
                "searchContainer",
                "selection"
            );
        },

        // multi
        initContainer: function () {

            var selector = ".select2-choices", selection;

            this.searchContainer = this.container.find(".select2-search-field");
            this.selection = selection = this.container.find(selector);

            var _this = this;
            this.selection.on("click", ".select2-container:not(.select2-container-disabled) .select2-search-choice:not(.select2-locked)", function (e) {
                _this.search[0].focus();
                _this.selectChoice($(this));
            });

            // rewrite labels from original element to focusser
            this.search.attr("id", "s2id_autogen"+nextUid());

            this.search.prev()
                .text($("label[for='" + this.opts.element.attr("id") + "']").text())
                .attr('for', this.search.attr('id'));
            this.opts.element.focus(this.bind(function () { this.focus(); }));

            this.search.on("input paste", this.bind(function() {
                if (this.search.attr('placeholder') && this.search.val().length == 0) return;
                if (!this.isInterfaceEnabled()) return;
                if (!this.opened()) {
                    this.open();
                }
            }));

            this.search.attr("tabindex", this.elementTabIndex);

            this.keydowns = 0;
            this.search.on("keydown", this.bind(function (e) {
                if (!this.isInterfaceEnabled()) return;

                ++this.keydowns;
                var selected = selection.find(".select2-search-choice-focus");
                var prev = selected.prev(".select2-search-choice:not(.select2-locked)");
                var next = selected.next(".select2-search-choice:not(.select2-locked)");
                var pos = getCursorInfo(this.search);

                if (selected.length &&
                    (e.which == KEY.LEFT || e.which == KEY.RIGHT || e.which == KEY.BACKSPACE || e.which == KEY.DELETE || e.which == KEY.ENTER)) {
                    var selectedChoice = selected;
                    if (e.which == KEY.LEFT && prev.length) {
                        selectedChoice = prev;
                    }
                    else if (e.which == KEY.RIGHT) {
                        selectedChoice = next.length ? next : null;
                    }
                    else if (e.which === KEY.BACKSPACE) {
                        if (this.unselect(selected.first())) {
                            this.search.width(10);
                            selectedChoice = prev.length ? prev : next;
                        }
                    } else if (e.which == KEY.DELETE) {
                        if (this.unselect(selected.first())) {
                            this.search.width(10);
                            selectedChoice = next.length ? next : null;
                        }
                    } else if (e.which == KEY.ENTER) {
                        selectedChoice = null;
                    }

                    this.selectChoice(selectedChoice);
                    killEvent(e);
                    if (!selectedChoice || !selectedChoice.length) {
                        this.open();
                    }
                    return;
                } else if (((e.which === KEY.BACKSPACE && this.keydowns == 1)
                    || e.which == KEY.LEFT) && (pos.offset == 0 && !pos.length)) {

                    this.selectChoice(selection.find(".select2-search-choice:not(.select2-locked)").last());
                    killEvent(e);
                    return;
                } else {
                    this.selectChoice(null);
                }

                if (this.opened()) {
                    switch (e.which) {
                    case KEY.UP:
                    case KEY.DOWN:
                        this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
                        killEvent(e);
                        return;
                    case KEY.ENTER:
                        this.selectHighlighted();
                        killEvent(e);
                        return;
                    case KEY.TAB:
                        this.selectHighlighted({noFocus:true});
                        this.close();
                        return;
                    case KEY.ESC:
                        this.cancel(e);
                        killEvent(e);
                        return;
                    }
                }

                if (e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e)
                 || e.which === KEY.BACKSPACE || e.which === KEY.ESC) {
                    return;
                }

                if (e.which === KEY.ENTER) {
                    if (this.opts.openOnEnter === false) {
                        return;
                    } else if (e.altKey || e.ctrlKey || e.shiftKey || e.metaKey) {
                        return;
                    }
                }

                this.open();

                if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN) {
                    // prevent the page from scrolling
                    killEvent(e);
                }

                if (e.which === KEY.ENTER) {
                    // prevent form from being submitted
                    killEvent(e);
                }

            }));

            this.search.on("keyup", this.bind(function (e) {
                this.keydowns = 0;
                this.resizeSearch();
            })
            );

            this.search.on("blur", this.bind(function(e) {
                this.container.removeClass("select2-container-active");
                this.search.removeClass("select2-focused");
                this.selectChoice(null);
                if (!this.opened()) this.clearSearch();
                e.stopImmediatePropagation();
                this.opts.element.trigger($.Event("select2-blur"));
            }));

            this.container.on("click", selector, this.bind(function (e) {
                if (!this.isInterfaceEnabled()) return;
                if ($(e.target).closest(".select2-search-choice").length > 0) {
                    // clicked inside a select2 search choice, do not open
                    return;
                }
                this.selectChoice(null);
                this.clearPlaceholder();
                if (!this.container.hasClass("select2-container-active")) {
                    this.opts.element.trigger($.Event("select2-focus"));
                }
                this.open();
                this.focusSearch();
                e.preventDefault();
            }));

            this.container.on("focus", selector, this.bind(function () {
                if (!this.isInterfaceEnabled()) return;
                if (!this.container.hasClass("select2-container-active")) {
                    this.opts.element.trigger($.Event("select2-focus"));
                }
                this.container.addClass("select2-container-active");
                this.dropdown.addClass("select2-drop-active");
                this.clearPlaceholder();
            }));

            this.initContainerWidth();
            this.opts.element.hide();

            // set the placeholder if necessary
            this.clearSearch();
        },

        // multi
        enableInterface: function() {
            if (this.parent.enableInterface.apply(this, arguments)) {
                this.search.prop("disabled", !this.isInterfaceEnabled());
            }
        },

        // multi
        initSelection: function () {
            var data;
            if (this.opts.element.val() === "" && this.opts.element.text() === "") {
                this.updateSelection([]);
                this.close();
                // set the placeholder if necessary
                this.clearSearch();
            }
            if (this.select || this.opts.element.val() !== "") {
                var self = this;
                this.opts.initSelection.call(null, this.opts.element, function(data){
                    if (data !== undefined && data !== null) {
                        self.updateSelection(data);
                        self.close();
                        // set the placeholder if necessary
                        self.clearSearch();
                    }
                });
            }
        },

        // multi
        clearSearch: function () {
            var placeholder = this.getPlaceholder(),
                maxWidth = this.getMaxSearchWidth();

            if (placeholder !== undefined  && this.getVal().length === 0 && this.search.hasClass("select2-focused") === false) {
                this.search.val(placeholder).addClass("select2-default");
                // stretch the search box to full width of the container so as much of the placeholder is visible as possible
                // we could call this.resizeSearch(), but we do not because that requires a sizer and we do not want to create one so early because of a firefox bug, see #944
                this.search.width(maxWidth > 0 ? maxWidth : this.container.css("width"));
            } else {
                this.search.val("").width(10);
            }
        },

        // multi
        clearPlaceholder: function () {
            if (this.search.hasClass("select2-default")) {
                this.search.val("").removeClass("select2-default");
            }
        },

        // multi
        opening: function () {
            this.clearPlaceholder(); // should be done before super so placeholder is not used to search
            this.resizeSearch();

            this.parent.opening.apply(this, arguments);

            this.focusSearch();

            // initializes search's value with nextSearchTerm (if defined by user)
            // ignore nextSearchTerm if the dropdown is opened by the user pressing a letter
            if(this.search.val() === "") {
                if(this.nextSearchTerm != undefined){
                    this.search.val(this.nextSearchTerm);
                    this.search.select();
                }
            }

            this.updateResults(true);
            if (this.opts.shouldFocusInput(this)) {
                this.search.focus();
            }
            this.opts.element.trigger($.Event("select2-open"));
        },

        // multi
        close: function () {
            if (!this.opened()) return;
            this.parent.close.apply(this, arguments);
        },

        // multi
        focus: function () {
            this.close();
            this.search.focus();
        },

        // multi
        isFocused: function () {
            return this.search.hasClass("select2-focused");
        },

        // multi
        updateSelection: function (data) {
            var ids = [], filtered = [], self = this;

            // filter out duplicates
            $(data).each(function () {
                if (indexOf(self.id(this), ids) < 0) {
                    ids.push(self.id(this));
                    filtered.push(this);
                }
            });
            data = filtered;

            this.selection.find(".select2-search-choice").remove();
            $(data).each(function () {
                self.addSelectedChoice(this);
            });
            self.postprocessResults();
        },

        // multi
        tokenize: function() {
            var input = this.search.val();
            input = this.opts.tokenizer.call(this, input, this.data(), this.bind(this.onSelect), this.opts);
            if (input != null && input != undefined) {
                this.search.val(input);
                if (input.length > 0) {
                    this.open();
                }
            }

        },

        // multi
        onSelect: function (data, options) {

            if (!this.triggerSelect(data) || data.text === "") { return; }

            this.addSelectedChoice(data);

            this.opts.element.trigger({ type: "selected", val: this.id(data), choice: data });

            // keep track of the search's value before it gets cleared
            this.nextSearchTerm = this.opts.nextSearchTerm(data, this.search.val());

            this.clearSearch();
            this.updateResults();

            if (this.select || !this.opts.closeOnSelect) this.postprocessResults(data, false, this.opts.closeOnSelect===true);

            if (this.opts.closeOnSelect) {
                this.close();
                this.search.width(10);
            } else {
                if (this.countSelectableResults()>0) {
                    this.search.width(10);
                    this.resizeSearch();
                    if (this.getMaximumSelectionSize() > 0 && this.val().length >= this.getMaximumSelectionSize()) {
                        // if we reached max selection size repaint the results so choices
                        // are replaced with the max selection reached message
                        this.updateResults(true);
                    } else {
                        // initializes search's value with nextSearchTerm and update search result
                        if(this.nextSearchTerm != undefined){
                            this.search.val(this.nextSearchTerm);
                            this.updateResults();
                            this.search.select();
                        }
                    }
                    this.positionDropdown();
                } else {
                    // if nothing left to select close
                    this.close();
                    this.search.width(10);
                }
            }

            // since its not possible to select an element that has already been
            // added we do not need to check if this is a new element before firing change
            this.triggerChange({ added: data });

            if (!options || !options.noFocus)
                this.focusSearch();
        },

        // multi
        cancel: function () {
            this.close();
            this.focusSearch();
        },

        addSelectedChoice: function (data) {
            var enableChoice = !data.locked,
                enabledItem = $(
                    "<li class='select2-search-choice'>" +
                    "    <div></div>" +
                    "    <a href='#' class='select2-search-choice-close' tabindex='-1'></a>" +
                    "</li>"),
                disabledItem = $(
                    "<li class='select2-search-choice select2-locked'>" +
                    "<div></div>" +
                    "</li>");
            var choice = enableChoice ? enabledItem : disabledItem,
                id = this.id(data),
                val = this.getVal(),
                formatted,
                cssClass;

            formatted=this.opts.formatSelection(data, choice.find("div"), this.opts.escapeMarkup);
            if (formatted != undefined) {
                choice.find("div").replaceWith($("<div></div>").html(formatted));
            }
            cssClass=this.opts.formatSelectionCssClass(data, choice.find("div"));
            if (cssClass != undefined) {
                choice.addClass(cssClass);
            }

            if(enableChoice){
              choice.find(".select2-search-choice-close")
                  .on("mousedown", killEvent)
                  .on("click dblclick", this.bind(function (e) {
                  if (!this.isInterfaceEnabled()) return;

                  this.unselect($(e.target));
                  this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
                  killEvent(e);
                  this.close();
                  this.focusSearch();
              })).on("focus", this.bind(function () {
                  if (!this.isInterfaceEnabled()) return;
                  this.container.addClass("select2-container-active");
                  this.dropdown.addClass("select2-drop-active");
              }));
            }

            choice.data("select2-data", data);
            choice.insertBefore(this.searchContainer);

            val.push(id);
            this.setVal(val);
        },

        // multi
        unselect: function (selected) {
            var val = this.getVal(),
                data,
                index;
            selected = selected.closest(".select2-search-choice");

            if (selected.length === 0) {
                throw "Invalid argument: " + selected + ". Must be .select2-search-choice";
            }

            data = selected.data("select2-data");

            if (!data) {
                // prevent a race condition when the 'x' is clicked really fast repeatedly the event can be queued
                // and invoked on an element already removed
                return;
            }

            var evt = $.Event("select2-removing");
            evt.val = this.id(data);
            evt.choice = data;
            this.opts.element.trigger(evt);

            if (evt.isDefaultPrevented()) {
                return false;
            }

            while((index = indexOf(this.id(data), val)) >= 0) {
                val.splice(index, 1);
                this.setVal(val);
                if (this.select) this.postprocessResults();
            }

            selected.remove();

            this.opts.element.trigger({ type: "select2-removed", val: this.id(data), choice: data });
            this.triggerChange({ removed: data });

            return true;
        },

        // multi
        postprocessResults: function (data, initial, noHighlightUpdate) {
            var val = this.getVal(),
                choices = this.results.find(".select2-result"),
                compound = this.results.find(".select2-result-with-children"),
                self = this;

            choices.each2(function (i, choice) {
                var id = self.id(choice.data("select2-data"));
                if (indexOf(id, val) >= 0) {
                    choice.addClass("select2-selected");
                    // mark all children of the selected parent as selected
                    choice.find(".select2-result-selectable").addClass("select2-selected");
                }
            });

            compound.each2(function(i, choice) {
                // hide an optgroup if it doesn't have any selectable children
                if (!choice.is('.select2-result-selectable')
                    && choice.find(".select2-result-selectable:not(.select2-selected)").length === 0) {
                    choice.addClass("select2-selected");
                }
            });

            if (this.highlight() == -1 && noHighlightUpdate !== false && this.opts.closeOnSelect === true){
                self.highlight(0);
            }

            //If all results are chosen render formatNoMatches
            if(!this.opts.createSearchChoice && !choices.filter('.select2-result:not(.select2-selected)').length > 0){
                if(!data || data && !data.more && this.results.find(".select2-no-results").length === 0) {
                    if (checkFormatter(self.opts.formatNoMatches, "formatNoMatches")) {
                        this.results.append("<li class='select2-no-results'>" + evaluate(self.opts.formatNoMatches, self.opts.element, self.search.val()) + "</li>");
                    }
                }
            }

        },

        // multi
        getMaxSearchWidth: function() {
            return this.selection.width() - getSideBorderPadding(this.search);
        },

        // multi
        resizeSearch: function () {
            var minimumWidth, left, maxWidth, containerLeft, searchWidth,
                sideBorderPadding = getSideBorderPadding(this.search);

            minimumWidth = measureTextWidth(this.search) + 10;

            left = this.search.offset().left;

            maxWidth = this.selection.width();
            containerLeft = this.selection.offset().left;

            searchWidth = maxWidth - (left - containerLeft) - sideBorderPadding;

            if (searchWidth < minimumWidth) {
                searchWidth = maxWidth - sideBorderPadding;
            }

            if (searchWidth < 40) {
                searchWidth = maxWidth - sideBorderPadding;
            }

            if (searchWidth <= 0) {
              searchWidth = minimumWidth;
            }

            this.search.width(Math.floor(searchWidth));
        },

        // multi
        getVal: function () {
            var val;
            if (this.select) {
                val = this.select.val();
                return val === null ? [] : val;
            } else {
                val = this.opts.element.val();
                return splitVal(val, this.opts.separator, this.opts.transformVal);
            }
        },

        // multi
        setVal: function (val) {
            var unique;
            if (this.select) {
                this.select.val(val);
            } else {
                unique = [];
                // filter out duplicates
                $(val).each(function () {
                    if (indexOf(this, unique) < 0) unique.push(this);
                });
                this.opts.element.val(unique.length === 0 ? "" : unique.join(this.opts.separator));
            }
        },

        // multi
        buildChangeDetails: function (old, current) {
            var current = current.slice(0),
                old = old.slice(0);

            // remove intersection from each array
            for (var i = 0; i < current.length; i++) {
                for (var j = 0; j < old.length; j++) {
                    if (equal(this.opts.id(current[i]), this.opts.id(old[j]))) {
                        current.splice(i, 1);
                        if(i>0){
                            i--;
                        }
                        old.splice(j, 1);
                        j--;
                    }
                }
            }

            return {added: current, removed: old};
        },


        // multi
        val: function (val, triggerChange) {
            var oldData, self=this;

            if (arguments.length === 0) {
                return this.getVal();
            }

            oldData=this.data();
            if (!oldData.length) oldData=[];

            // val is an id. !val is true for [undefined,null,'',0] - 0 is legal
            if (!val && val !== 0) {
                this.opts.element.val("");
                this.updateSelection([]);
                this.clearSearch();
                if (triggerChange) {
                    this.triggerChange({added: this.data(), removed: oldData});
                }
                return;
            }

            // val is a list of ids
            this.setVal(val);

            if (this.select) {
                this.opts.initSelection(this.select, this.bind(this.updateSelection));
                if (triggerChange) {
                    this.triggerChange(this.buildChangeDetails(oldData, this.data()));
                }
            } else {
                if (this.opts.initSelection === undefined) {
                    throw new Error("val() cannot be called if initSelection() is not defined");
                }

                this.opts.initSelection(this.opts.element, function(data){
                    var ids=$.map(data, self.id);
                    self.setVal(ids);
                    self.updateSelection(data);
                    self.clearSearch();
                    if (triggerChange) {
                        self.triggerChange(self.buildChangeDetails(oldData, self.data()));
                    }
                });
            }
            this.clearSearch();
        },

        // multi
        onSortStart: function() {
            if (this.select) {
                throw new Error("Sorting of elements is not supported when attached to <select>. Attach to <input type='hidden'/> instead.");
            }

            // collapse search field into 0 width so its container can be collapsed as well
            this.search.width(0);
            // hide the container
            this.searchContainer.hide();
        },

        // multi
        onSortEnd:function() {

            var val=[], self=this;

            // show search and move it to the end of the list
            this.searchContainer.show();
            // make sure the search container is the last item in the list
            this.searchContainer.appendTo(this.searchContainer.parent());
            // since we collapsed the width in dragStarted, we resize it here
            this.resizeSearch();

            // update selection
            this.selection.find(".select2-search-choice").each(function() {
                val.push(self.opts.id($(this).data("select2-data")));
            });
            this.setVal(val);
            this.triggerChange();
        },

        // multi
        data: function(values, triggerChange) {
            var self=this, ids, old;
            if (arguments.length === 0) {
                 return this.selection
                     .children(".select2-search-choice")
                     .map(function() { return $(this).data("select2-data"); })
                     .get();
            } else {
                old = this.data();
                if (!values) { values = []; }
                ids = $.map(values, function(e) { return self.opts.id(e); });
                this.setVal(ids);
                this.updateSelection(values);
                this.clearSearch();
                if (triggerChange) {
                    this.triggerChange(this.buildChangeDetails(old, this.data()));
                }
            }
        }
    });

    $.fn.select2 = function () {

        var args = Array.prototype.slice.call(arguments, 0),
            opts,
            select2,
            method, value, multiple,
            allowedMethods = ["val", "destroy", "opened", "open", "close", "focus", "isFocused", "container", "dropdown", "onSortStart", "onSortEnd", "enable", "disable", "readonly", "positionDropdown", "data", "search"],
            valueMethods = ["opened", "isFocused", "container", "dropdown"],
            propertyMethods = ["val", "data"],
            methodsMap = { search: "externalSearch" };

        this.each(function () {
            if (args.length === 0 || typeof(args[0]) === "object") {
                opts = args.length === 0 ? {} : $.extend({}, args[0]);
                opts.element = $(this);

                if (opts.element.get(0).tagName.toLowerCase() === "select") {
                    multiple = opts.element.prop("multiple");
                } else {
                    multiple = opts.multiple || false;
                    if ("tags" in opts) {opts.multiple = multiple = true;}
                }

                select2 = multiple ? new window.Select2["class"].multi() : new window.Select2["class"].single();
                select2.init(opts);
            } else if (typeof(args[0]) === "string") {

                if (indexOf(args[0], allowedMethods) < 0) {
                    throw "Unknown method: " + args[0];
                }

                value = undefined;
                select2 = $(this).data("select2");
                if (select2 === undefined) return;

                method=args[0];

                if (method === "container") {
                    value = select2.container;
                } else if (method === "dropdown") {
                    value = select2.dropdown;
                } else {
                    if (methodsMap[method]) method = methodsMap[method];

                    value = select2[method].apply(select2, args.slice(1));
                }
                if (indexOf(args[0], valueMethods) >= 0
                    || (indexOf(args[0], propertyMethods) >= 0 && args.length == 1)) {
                    return false; // abort the iteration, ready to return first matched value
                }
            } else {
                throw "Invalid arguments to select2 plugin: " + args;
            }
        });
        return (value === undefined) ? this : value;
    };

    // plugin defaults, accessible to users
    $.fn.select2.defaults = {
        width: "copy",
        loadMorePadding: 0,
        closeOnSelect: true,
        openOnEnter: true,
        containerCss: {},
        dropdownCss: {},
        containerCssClass: "",
        dropdownCssClass: "",
        formatResult: function(result, container, query, escapeMarkup) {
            var markup=[];
            markMatch(this.text(result), query.term, markup, escapeMarkup);
            return markup.join("");
        },
        transformVal: function(val) {
            return $.trim(val);
        },
        formatSelection: function (data, container, escapeMarkup) {
            return data ? escapeMarkup(this.text(data)) : undefined;
        },
        sortResults: function (results, container, query) {
            return results;
        },
        formatResultCssClass: function(data) {return data.css;},
        formatSelectionCssClass: function(data, container) {return undefined;},
        minimumResultsForSearch: 0,
        minimumInputLength: 0,
        maximumInputLength: null,
        maximumSelectionSize: 0,
        id: function (e) { return e == undefined ? null : e.id; },
        text: function (e) {
          if (e && this.data && this.data.text) {
            if ($.isFunction(this.data.text)) {
              return this.data.text(e);
            } else {
              return e[this.data.text];
            }
          } else {
            return e.text;
          }
        },
        matcher: function(term, text) {
            return stripDiacritics(''+text).toUpperCase().indexOf(stripDiacritics(''+term).toUpperCase()) >= 0;
        },
        separator: ",",
        tokenSeparators: [],
        tokenizer: defaultTokenizer,
        escapeMarkup: defaultEscapeMarkup,
        blurOnChange: false,
        selectOnBlur: false,
        adaptContainerCssClass: function(c) { return c; },
        adaptDropdownCssClass: function(c) { return null; },
        nextSearchTerm: function(selectedObject, currentSearchTerm) { return undefined; },
        searchInputPlaceholder: '',
        createSearchChoicePosition: 'top',
        shouldFocusInput: function (instance) {
            // Attempt to detect touch devices
            var supportsTouchEvents = (('ontouchstart' in window) ||
                                       (navigator.msMaxTouchPoints > 0));

            // Only devices which support touch events should be special cased
            if (!supportsTouchEvents) {
                return true;
            }

            // Never focus the input if search is disabled
            if (instance.opts.minimumResultsForSearch < 0) {
                return false;
            }

            return true;
        }
    };

    $.fn.select2.locales = [];

    $.fn.select2.locales['en'] = {
         formatMatches: function (matches) { if (matches === 1) { return "One result is available, press enter to select it."; } return matches + " results are available, use up and down arrow keys to navigate."; },
         formatNoMatches: function () { return "No matches found"; },
         formatAjaxError: function (jqXHR, textStatus, errorThrown) { return "Loading failed"; },
         formatInputTooShort: function (input, min) { var n = min - input.length; return "Please enter " + n + " or more character" + (n == 1 ? "" : "s"); },
         formatInputTooLong: function (input, max) { var n = input.length - max; return "Please delete " + n + " character" + (n == 1 ? "" : "s"); },
         formatSelectionTooBig: function (limit) { return "You can only select " + limit + " item" + (limit == 1 ? "" : "s"); },
         formatLoadMore: function (pageNumber) { return "Loading more results…"; },
         formatSearching: function () { return "Searching…"; }
    };

    $.extend($.fn.select2.defaults, $.fn.select2.locales['en']);

    $.fn.select2.ajaxDefaults = {
        transport: $.ajax,
        params: {
            type: "GET",
            cache: false,
            dataType: "json"
        }
    };

    // exports
    window.Select2 = {
        query: {
            ajax: ajax,
            local: local,
            tags: tags
        }, util: {
            debounce: debounce,
            markMatch: markMatch,
            escapeMarkup: defaultEscapeMarkup,
            stripDiacritics: stripDiacritics
        }, "class": {
            "abstract": AbstractSelect2,
            "single": SingleSelect2,
            "multi": MultiSelect2
        }
    };

}(jQuery));

/**
 * Select2 German translation
 */
(function ($) {
    "use strict";

    $.fn.select2.locales['de'] = {
        formatNoMatches: function () { return "Keine Übereinstimmungen gefunden"; },
        formatInputTooShort: function (input, min) { var n = min - input.length; return "Bitte " + n + " Zeichen mehr eingeben"; },
        formatInputTooLong: function (input, max) { var n = input.length - max; return "Bitte " + n + " Zeichen weniger eingeben"; },
        formatSelectionTooBig: function (limit) { return "Sie können nur " + limit + " Eintr" + (limit === 1 ? "ag" : "äge") + " auswählen"; },
        formatLoadMore: function (pageNumber) { return "Lade mehr Ergebnisse…"; },
        formatSearching: function () { return "Suche…"; },
        formatMatches: function (matches) { return matches + " Ergebnis " + (matches > 1 ? "se" : "") + " verfügbar, zum Navigieren die Hoch-/Runter-Pfeiltasten verwenden."; }
    };

    $.extend($.fn.select2.defaults, $.fn.select2.locales['de']);
})(jQuery);
/**
 * menu-aim is a jQuery plugin for dropdown menus that can differentiate
 * between a user trying hover over a dropdown item vs trying to navigate into
 * a submenu's contents.
 *
 * menu-aim assumes that you have are using a menu with submenus that expand
 * to the menu's right. It will fire events when the user's mouse enters a new
 * dropdown item *and* when that item is being intentionally hovered over.
 *
 * __________________________
 * | Monkeys  >|   Gorilla  |
 * | Gorillas >|   Content  |
 * | Chimps   >|   Here     |
 * |___________|____________|
 *
 * In the above example, "Gorillas" is selected and its submenu content is
 * being shown on the right. Imagine that the user's cursor is hovering over
 * "Gorillas." When they move their mouse into the "Gorilla Content" area, they
 * may briefly hover over "Chimps." This shouldn't close the "Gorilla Content"
 * area.
 *
 * This problem is normally solved using timeouts and delays. menu-aim tries to
 * solve this by detecting the direction of the user's mouse movement. This can
 * make for quicker transitions when navigating up and down the menu. The
 * experience is hopefully similar to amazon.com/'s "Shop by Department"
 * dropdown.
 *
 * Use like so:
 *
 *      $("#menu").menuAim({
 *          activate: $.noop,  // fired on row activation
 *          deactivate: $.noop  // fired on row deactivation
 *      });
 *
 *  ...to receive events when a menu's row has been purposefully (de)activated.
 *
 * The following options can be passed to menuAim. All functions execute with
 * the relevant row's HTML element as the execution context ('this'):
 *
 *      .menuAim({
 *          // Function to call when a row is purposefully activated. Use this
 *          // to show a submenu's content for the activated row.
 *          activate: function() {},
 *
 *          // Function to call when a row is deactivated.
 *          deactivate: function() {},
 *
 *          // Function to call when mouse enters a menu row. Entering a row
 *          // does not mean the row has been activated, as the user may be
 *          // mousing over to a submenu.
 *          enter: function() {},
 *
 *          // Function to call when mouse exits a menu row.
 *          exit: function() {},
 *
 *          // Selector for identifying which elements in the menu are rows
 *          // that can trigger the above events. Defaults to "> li".
 *          rowSelector: "> li",
 *
 *          // You may have some menu rows that aren't submenus and therefore
 *          // shouldn't ever need to "activate." If so, filter submenu rows w/
 *          // this selector. Defaults to "*" (all elements).
 *          submenuSelector: "*",
 *
 *          // Direction the submenu opens relative to the main menu. Can be
 *          // left, right, above, or below. Defaults to "right".
 *          submenuDirection: "right"
 *      });
 *
 * https://github.com/kamens/jQuery-menu-aim
*/
(function($) {

    $.fn.menuAim = function(opts) {
        // Initialize menu-aim for all elements in jQuery collection
        this.each(function() {
            init.call(this, opts);
        });

        return this;
    };

    function init(opts) {
        var $menu = $(this),
            activeRow = null,
            mouseLocs = [],
            lastDelayLoc = null,
            timeoutId = null,
            options = $.extend({
                rowSelector: "> li",
                submenuSelector: "*",
                submenuDirection: "right",
                tolerance: 75,  // bigger = more forgivey when entering submenu
                enter: $.noop,
                exit: $.noop,
                activate: $.noop,
                deactivate: $.noop,
                exitMenu: $.noop
            }, opts);

        var MOUSE_LOCS_TRACKED = 3,  // number of past mouse locations to track
            DELAY = 300;  // ms delay when user appears to be entering submenu

        /**
         * Keep track of the last few locations of the mouse.
         */
        var mousemoveDocument = function(e) {
                mouseLocs.push({x: e.pageX, y: e.pageY});

                if (mouseLocs.length > MOUSE_LOCS_TRACKED) {
                    mouseLocs.shift();
                }
            };

        /**
         * Cancel possible row activations when leaving the menu entirely
         */
        var mouseleaveMenu = function() {
                if (timeoutId) {
                    clearTimeout(timeoutId);
                }

                // If exitMenu is supplied and returns true, deactivate the
                // currently active row on menu exit.
                if (options.exitMenu(this)) {
                    if (activeRow) {
                        options.deactivate(activeRow);
                    }

                    activeRow = null;
                }
            };

        /**
         * Trigger a possible row activation whenever entering a new row.
         */
        var mouseenterRow = function() {
                if (timeoutId) {
                    // Cancel any previous activation delays
                    clearTimeout(timeoutId);
                }

                options.enter(this);
                possiblyActivate(this);
            },
            mouseleaveRow = function() {
                options.exit(this);
            };

        /*
         * Immediately activate a row if the user clicks on it.
         */
        var clickRow = function() {
                activate(this);
            };

        /**
         * Activate a menu row.
         */
        var activate = function(row) {
                if (row == activeRow) {
                    return;
                }

                if (activeRow) {
                    options.deactivate(activeRow);
                }

                options.activate(row);
                activeRow = row;
            };

        /**
         * Possibly activate a menu row. If mouse movement indicates that we
         * shouldn't activate yet because user may be trying to enter
         * a submenu's content, then delay and check again later.
         */
        var possiblyActivate = function(row) {
                var delay = activationDelay();

                if (delay) {
                    timeoutId = setTimeout(function() {
                        possiblyActivate(row);
                    }, delay);
                } else {
                    activate(row);
                }
            };

        /**
         * Return the amount of time that should be used as a delay before the
         * currently hovered row is activated.
         *
         * Returns 0 if the activation should happen immediately. Otherwise,
         * returns the number of milliseconds that should be delayed before
         * checking again to see if the row should be activated.
         */
        var activationDelay = function() {
                if (!activeRow || !$(activeRow).is(options.submenuSelector)) {
                    // If there is no other submenu row already active, then
                    // go ahead and activate immediately.
                    return 0;
                }

                var offset = $menu.offset(),
                    upperLeft = {
                        x: offset.left,
                        y: offset.top - options.tolerance
                    },
                    upperRight = {
                        x: offset.left + $menu.outerWidth(),
                        y: upperLeft.y
                    },
                    lowerLeft = {
                        x: offset.left,
                        y: offset.top + $menu.outerHeight() + options.tolerance
                    },
                    lowerRight = {
                        x: offset.left + $menu.outerWidth(),
                        y: lowerLeft.y
                    },
                    loc = mouseLocs[mouseLocs.length - 1],
                    prevLoc = mouseLocs[0];

                if (!loc) {
                    return 0;
                }

                if (!prevLoc) {
                    prevLoc = loc;
                }

                if (prevLoc.x < offset.left || prevLoc.x > lowerRight.x ||
                    prevLoc.y < offset.top || prevLoc.y > lowerRight.y) {
                    // If the previous mouse location was outside of the entire
                    // menu's bounds, immediately activate.
                    return 0;
                }

                if (lastDelayLoc &&
                        loc.x == lastDelayLoc.x && loc.y == lastDelayLoc.y) {
                    // If the mouse hasn't moved since the last time we checked
                    // for activation status, immediately activate.
                    return 0;
                }

                // Detect if the user is moving towards the currently activated
                // submenu.
                //
                // If the mouse is heading relatively clearly towards
                // the submenu's content, we should wait and give the user more
                // time before activating a new row. If the mouse is heading
                // elsewhere, we can immediately activate a new row.
                //
                // We detect this by calculating the slope formed between the
                // current mouse location and the upper/lower right points of
                // the menu. We do the same for the previous mouse location.
                // If the current mouse location's slopes are
                // increasing/decreasing appropriately compared to the
                // previous's, we know the user is moving toward the submenu.
                //
                // Note that since the y-axis increases as the cursor moves
                // down the screen, we are looking for the slope between the
                // cursor and the upper right corner to decrease over time, not
                // increase (somewhat counterintuitively).
                function slope(a, b) {
                    return (b.y - a.y) / (b.x - a.x);
                };

                var decreasingCorner = upperRight,
                    increasingCorner = lowerRight;

                // Our expectations for decreasing or increasing slope values
                // depends on which direction the submenu opens relative to the
                // main menu. By default, if the menu opens on the right, we
                // expect the slope between the cursor and the upper right
                // corner to decrease over time, as explained above. If the
                // submenu opens in a different direction, we change our slope
                // expectations.
                if (options.submenuDirection == "left") {
                    decreasingCorner = lowerLeft;
                    increasingCorner = upperLeft;
                } else if (options.submenuDirection == "below") {
                    decreasingCorner = lowerRight;
                    increasingCorner = lowerLeft;
                } else if (options.submenuDirection == "above") {
                    decreasingCorner = upperLeft;
                    increasingCorner = upperRight;
                }

                var decreasingSlope = slope(loc, decreasingCorner),
                    increasingSlope = slope(loc, increasingCorner),
                    prevDecreasingSlope = slope(prevLoc, decreasingCorner),
                    prevIncreasingSlope = slope(prevLoc, increasingCorner);

                if (decreasingSlope < prevDecreasingSlope &&
                        increasingSlope > prevIncreasingSlope) {
                    // Mouse is moving from previous location towards the
                    // currently activated submenu. Delay before activating a
                    // new menu row, because user may be moving into submenu.
                    lastDelayLoc = loc;
                    return DELAY;
                }

                lastDelayLoc = null;
                return 0;
            };

        /**
         * Hook up initial menu events
         */
        $menu
            .mouseleave(mouseleaveMenu)
            .find(options.rowSelector)
                .mouseenter(mouseenterRow)
                .mouseleave(mouseleaveRow)
                .click(clickRow);

        $(document).mousemove(mousemoveDocument);

    };
})(jQuery);


/*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas, David Knight. Dual MIT/BSD license */

window.matchMedia || (window.matchMedia = function() {
    "use strict";

    // For browsers that support matchMedium api such as IE 9 and webkit
    var styleMedia = (window.styleMedia || window.media);

    // For those that don't support matchMedium
    if (!styleMedia) {
        var style       = document.createElement('style'),
            script      = document.getElementsByTagName('script')[0],
            info        = null;

        style.type  = 'text/css';
        style.id    = 'matchmediajs-test';

        script.parentNode.insertBefore(style, script);

        // 'style.currentStyle' is used by IE <= 8 and 'window.getComputedStyle' for all other browsers
        info = ('getComputedStyle' in window) && window.getComputedStyle(style, null) || style.currentStyle;

        styleMedia = {
            matchMedium: function(media) {
                var text = '@media ' + media + '{ #matchmediajs-test { width: 1px; } }';

                // 'style.styleSheet' is used by IE <= 8 and 'style.textContent' for all other browsers
                if (style.styleSheet) {
                    style.styleSheet.cssText = text;
                } else {
                    style.textContent = text;
                }

                // Test if media query is true or false
                return info.width === '1px';
            }
        };
    }

    return function(media) {
        return {
            matches: styleMedia.matchMedium(media || 'all'),
            media: media || 'all'
        };
    };
}());

/*! matchMedia() polyfill addListener/removeListener extension. Author & copyright (c) 2012: Scott Jehl. Dual MIT/BSD license */
(function(){
    // Bail out for browsers that have addListener support
    if (window.matchMedia && window.matchMedia('all').addListener) {
        return false;
    }

    var localMatchMedia = window.matchMedia,
        hasMediaQueries = localMatchMedia('only all').matches,
        isListening     = false,
        timeoutID       = 0,    // setTimeout for debouncing 'handleChange'
        queries         = [],   // Contains each 'mql' and associated 'listeners' if 'addListener' is used
        handleChange    = function(evt) {
            // Debounce
            clearTimeout(timeoutID);

            timeoutID = setTimeout(function() {
                for (var i = 0, il = queries.length; i < il; i++) {
                    var mql         = queries[i].mql,
                        listeners   = queries[i].listeners || [],
                        matches     = localMatchMedia(mql.media).matches;

                    // Update mql.matches value and call listeners
                    // Fire listeners only if transitioning to or from matched state
                    if (matches !== mql.matches) {
                        mql.matches = matches;

                        for (var j = 0, jl = listeners.length; j < jl; j++) {
                            listeners[j].call(window, mql);
                        }
                    }
                }
            }, 30);
        };

    window.matchMedia = function(media) {
        var mql         = localMatchMedia(media),
            listeners   = [],
            index       = 0;

        mql.addListener = function(listener) {
            // Changes would not occur to css media type so return now (Affects IE <= 8)
            if (!hasMediaQueries) {
                return;
            }

            // Set up 'resize' listener for browsers that support CSS3 media queries (Not for IE <= 8)
            // There should only ever be 1 resize listener running for performance
            if (!isListening) {
                isListening = true;
                window.addEventListener('resize', handleChange, true);
            }

            // Push object only if it has not been pushed already
            if (index === 0) {
                index = queries.push({
                    mql         : mql,
                    listeners   : listeners
                });
            }

            listeners.push(listener);
        };

        mql.removeListener = function(listener) {
            for (var i = 0, il = listeners.length; i < il; i++){
                if (listeners[i] === listener){
                    listeners.splice(i, 1);
                }
            }
        };

        return mql;
    };
}());

/*!
 * enquire.js v2.1.0 - Awesome Media Queries in JavaScript
 * Copyright (c) 2014 Nick Williams - http://wicky.nillia.ms/enquire.js
 * License: MIT (http://www.opensource.org/licenses/mit-license.php)
 */

;(function (name, context, factory) {
	var matchMedia = window.matchMedia;

	if (typeof module !== 'undefined' && module.exports) {
		module.exports = factory(matchMedia);
	}
	else if (typeof define === 'function' && define.amd) {
		define(function() {
			return (context[name] = factory(matchMedia));
		});
	}
	else {
		context[name] = factory(matchMedia);
	}
}('enquire', this, function (matchMedia) {

	'use strict';

    /*jshint unused:false */
    /**
     * Helper function for iterating over a collection
     *
     * @param collection
     * @param fn
     */
    function each(collection, fn) {
        var i      = 0,
            length = collection.length,
            cont;

        for(i; i < length; i++) {
            cont = fn(collection[i], i);
            if(cont === false) {
                break; //allow early exit
            }
        }
    }

    /**
     * Helper function for determining whether target object is an array
     *
     * @param target the object under test
     * @return {Boolean} true if array, false otherwise
     */
    function isArray(target) {
        return Object.prototype.toString.apply(target) === '[object Array]';
    }

    /**
     * Helper function for determining whether target object is a function
     *
     * @param target the object under test
     * @return {Boolean} true if function, false otherwise
     */
    function isFunction(target) {
        return typeof target === 'function';
    }

    /**
     * Delegate to handle a media query being matched and unmatched.
     *
     * @param {object} options
     * @param {function} options.match callback for when the media query is matched
     * @param {function} [options.unmatch] callback for when the media query is unmatched
     * @param {function} [options.setup] one-time callback triggered the first time a query is matched
     * @param {boolean} [options.deferSetup=false] should the setup callback be run immediately, rather than first time query is matched?
     * @constructor
     */
    function QueryHandler(options) {
        this.options = options;
        !options.deferSetup && this.setup();
    }
    QueryHandler.prototype = {

        /**
         * coordinates setup of the handler
         *
         * @function
         */
        setup : function() {
            if(this.options.setup) {
                this.options.setup();
            }
            this.initialised = true;
        },

        /**
         * coordinates setup and triggering of the handler
         *
         * @function
         */
        on : function() {
            !this.initialised && this.setup();
            this.options.match && this.options.match();
        },

        /**
         * coordinates the unmatch event for the handler
         *
         * @function
         */
        off : function() {
            this.options.unmatch && this.options.unmatch();
        },

        /**
         * called when a handler is to be destroyed.
         * delegates to the destroy or unmatch callbacks, depending on availability.
         *
         * @function
         */
        destroy : function() {
            this.options.destroy ? this.options.destroy() : this.off();
        },

        /**
         * determines equality by reference.
         * if object is supplied compare options, if function, compare match callback
         *
         * @function
         * @param {object || function} [target] the target for comparison
         */
        equals : function(target) {
            return this.options === target || this.options.match === target;
        }

    };
    /**
     * Represents a single media query, manages it's state and registered handlers for this query
     *
     * @constructor
     * @param {string} query the media query string
     * @param {boolean} [isUnconditional=false] whether the media query should run regardless of whether the conditions are met. Primarily for helping older browsers deal with mobile-first design
     */
    function MediaQuery(query, isUnconditional) {
        this.query = query;
        this.isUnconditional = isUnconditional;
        this.handlers = [];
        this.mql = matchMedia(query);

        var self = this;
        this.listener = function(mql) {
            self.mql = mql;
            self.assess();
        };
        this.mql.addListener(this.listener);
    }
    MediaQuery.prototype = {

        /**
         * add a handler for this query, triggering if already active
         *
         * @param {object} handler
         * @param {function} handler.match callback for when query is activated
         * @param {function} [handler.unmatch] callback for when query is deactivated
         * @param {function} [handler.setup] callback for immediate execution when a query handler is registered
         * @param {boolean} [handler.deferSetup=false] should the setup callback be deferred until the first time the handler is matched?
         */
        addHandler : function(handler) {
            var qh = new QueryHandler(handler);
            this.handlers.push(qh);

            this.matches() && qh.on();
        },

        /**
         * removes the given handler from the collection, and calls it's destroy methods
         * 
         * @param {object || function} handler the handler to remove
         */
        removeHandler : function(handler) {
            var handlers = this.handlers;
            each(handlers, function(h, i) {
                if(h.equals(handler)) {
                    h.destroy();
                    return !handlers.splice(i,1); //remove from array and exit each early
                }
            });
        },

        /**
         * Determine whether the media query should be considered a match
         * 
         * @return {Boolean} true if media query can be considered a match, false otherwise
         */
        matches : function() {
            return this.mql.matches || this.isUnconditional;
        },

        /**
         * Clears all handlers and unbinds events
         */
        clear : function() {
            each(this.handlers, function(handler) {
                handler.destroy();
            });
            this.mql.removeListener(this.listener);
            this.handlers.length = 0; //clear array
        },

        /*
         * Assesses the query, turning on all handlers if it matches, turning them off if it doesn't match
         */
        assess : function() {
            var action = this.matches() ? 'on' : 'off';

            each(this.handlers, function(handler) {
                handler[action]();
            });
        }
    };
    /**
     * Allows for registration of query handlers.
     * Manages the query handler's state and is responsible for wiring up browser events
     *
     * @constructor
     */
    function MediaQueryDispatch () {
        if(!matchMedia) {
            throw new Error('matchMedia not present, legacy browsers require a polyfill');
        }

        this.queries = {};
        this.browserIsIncapable = !matchMedia('only all').matches;
    }

    MediaQueryDispatch.prototype = {

        /**
         * Registers a handler for the given media query
         *
         * @param {string} q the media query
         * @param {object || Array || Function} options either a single query handler object, a function, or an array of query handlers
         * @param {function} options.match fired when query matched
         * @param {function} [options.unmatch] fired when a query is no longer matched
         * @param {function} [options.setup] fired when handler first triggered
         * @param {boolean} [options.deferSetup=false] whether setup should be run immediately or deferred until query is first matched
         * @param {boolean} [shouldDegrade=false] whether this particular media query should always run on incapable browsers
         */
        register : function(q, options, shouldDegrade) {
            var queries         = this.queries,
                isUnconditional = shouldDegrade && this.browserIsIncapable;

            if(!queries[q]) {
                queries[q] = new MediaQuery(q, isUnconditional);
            }

            //normalise to object in an array
            if(isFunction(options)) {
                options = { match : options };
            }
            if(!isArray(options)) {
                options = [options];
            }
            each(options, function(handler) {
                queries[q].addHandler(handler);
            });

            return this;
        },

        /**
         * unregisters a query and all it's handlers, or a specific handler for a query
         *
         * @param {string} q the media query to target
         * @param {object || function} [handler] specific handler to unregister
         */
        unregister : function(q, handler) {
            var query = this.queries[q];

            if(query) {
                if(handler) {
                    query.removeHandler(handler);
                }
                else {
                    query.clear();
                    delete this.queries[q];
                }
            }

            return this;
        }
    };

	return new MediaQueryDispatch();

}));
;(function( win, $ ) {

    function featureTest( property, value, noPrefixes ) {
        // Thanks Modernizr! https://github.com/phistuck/Modernizr/commit/3fb7217f5f8274e2f11fe6cfeda7cfaf9948a1f5
        var prop = property + ':',
            el = document.createElement( 'test' ),
            mStyle = el.style;

        if( !noPrefixes ) {
            mStyle.cssText = prop + [ '-webkit-', '-moz-', '-ms-', '-o-', '' ].join( value + ';' + prop ) + value + ';';
        } else {
            mStyle.cssText = prop + value;
        }
        return mStyle[ property ].indexOf( value ) !== -1;
    }

    function getPx( unit ) {
        return parseInt( unit, 10 ) || 0;
    }

    var uniqueIdCounter = 0;

    var S = {
        classes: {
            plugin: 'fixedsticky',
            active: 'fixedsticky-on',
            inactive: 'fixedsticky-off',
            clone: 'fixedsticky-dummy',
            withoutFixedFixed: 'fixedsticky-withoutfixedfixed'
        },
        keys: {
            offset: 'fixedStickyOffset',
            position: 'fixedStickyPosition',
            id: 'fixedStickyId'
        },
        tests: {
            sticky: featureTest( 'position', 'sticky' ),
            fixed: featureTest( 'position', 'fixed', true )
        },
        // Thanks jQuery!
        getScrollTop: function() {
            var prop = 'pageYOffset',
                method = 'scrollTop';
            return win ? (prop in win) ? win[ prop ] :
                win.document.documentElement[ method ] :
                win.document.body[ method ];
        },
        bypass: function() {
            // Check native sticky, check fixed and if fixed-fixed is also included on the page and is supported
            return ( S.tests.sticky && !S.optOut ) ||
                !S.tests.fixed ||
                win.FixedFixed && !$( win.document.documentElement ).hasClass( 'fixed-supported' );
        },
        refresh: function( el ) {
            var $el = $( el );
            return $el.each(function() {
                $( this )
                    .removeData( [ S.keys.offset, S.keys.position ] )
                    .removeClass( S.classes.active + ' ' + S.classes.inactive )
                    .next( '.' + S.classes.clone ).remove();
                S.update( this );
            });
        },
        update: function( el ) {
            if( !el.offsetWidth ) { return; }

            var width,
                $el = $( el ),
                height = $el.outerHeight(),
                initialOffset = $el.data( S.keys.offset ),
                scroll = S.getScrollTop(),
                isAlreadyOn = $el.is( '.' + S.classes.active ),
                toggle = function( turnOn ) {
                    $el[ turnOn ? 'addClass' : 'removeClass' ]( S.classes.active )
                        [ !turnOn ? 'addClass' : 'removeClass' ]( S.classes.inactive );
                },
                viewportHeight = $( window ).height(),
                position = $el.data( S.keys.position ),
                skipSettingToFixed,
                elTop,
                elBottom,
                $parent = $el.parent(),
                parentOffset = $parent.offset().top,
                parentHeight = $parent.outerHeight();

            if( !initialOffset ) {
                initialOffset = $el.offset().top;
                $el.data( S.keys.offset, initialOffset );
                $el.after( $( '<div>' ).addClass( S.classes.clone ).height( height ) );
            }

            if( !position ) {
                // Some browsers require fixed/absolute to report accurate top/left values.
                skipSettingToFixed = $el.css( 'top' ) !== 'auto' || $el.css( 'bottom' ) !== 'auto';

                if( !skipSettingToFixed ) {
                    $el.css( 'position', 'fixed' );
                }

                position = {
                    top: $el.css( 'top' ) !== 'auto',
                    bottom: $el.css( 'bottom' ) !== 'auto'
                };

                if( !skipSettingToFixed ) {
                    $el.css( 'position', '' );
                }

                $el.data( S.keys.position, position );
            }

            function isFixedToTop() {
                var offsetTop = scroll + elTop;

                // Initial Offset Top
                return initialOffset < offsetTop &&
                    // Container Bottom
                    offsetTop + height <= parentOffset + parentHeight;
            }

            function isFixedToBottom() {
                // Initial Offset Top + Height
                return initialOffset + ( height || 0 ) > scroll + viewportHeight - elBottom &&
                    // Container Top
                    scroll + viewportHeight - elBottom >= parentOffset + ( height || 0 );
            }

            elTop = getPx( $el.css( 'top' ) );
            elBottom = getPx( $el.css( 'bottom' ) );

            if( position.top && isFixedToTop() || position.bottom && isFixedToBottom() ) {
                if( !isAlreadyOn ) {
                    toggle( true );
                }
            } else {
                if( isAlreadyOn ) {
                    toggle( false );
                }
            }
        },
        destroy: function( el ) {
            var $el = $( el );
            if (S.bypass()) {
                return;
            }

            return $el.each(function() {
                var $this = $( this );
                var id = $this.data( S.keys.id );
                $( win ).unbind( '.fixedsticky' + id );

                $this
                    .removeData( [ S.keys.offset, S.keys.position, S.keys.id ] )
                    .removeClass( S.classes.active )
                    .removeClass( S.classes.inactive )
                    .next( '.' + S.classes.clone ).remove();
            });
        },
        init: function( el ) {
            var $el = $( el );

            if( S.bypass() ) {
                return;
            }

            return $el.each(function() {
                var _this = this;
                var id = uniqueIdCounter++;
                $( this ).data( S.keys.id, id );

                $( win ).bind( 'scroll.fixedsticky' + id, function() {
                    S.update( _this );
                }).trigger( 'scroll.fixedsticky' + id );

                $( win ).bind( 'resize.fixedsticky' + id , function() {
                    if( $el.is( '.' + S.classes.active ) ) {
                        S.update( _this );
                    }
                });


            });
        }
    };

    win.FixedSticky = S;

    // Plugin
    $.fn.fixedsticky = function( method ) {
        if ( typeof S[ method ] === 'function') {
            return S[ method ].call( S, this);
        } else if ( typeof method === 'object' || ! method ) {
            return S.init.call( S, this );
        } else {
            throw new Error( 'Method `' +  method + '` does not exist on jQuery.fixedsticky' );
        }
    };

    // Add fallback when fixed-fixed is not available.
    if( !win.FixedFixed ) {
        $( win.document.documentElement ).addClass( S.classes.withoutFixedFixed );
    }

})( this, jQuery );
/*
 * jQuery FlexSlider v2.2.2
 * Copyright 2012 WooThemes
 * Contributing Author: Tyler Smith
 */
;
(function ($) {

  //FlexSlider: Object Instance
  $.flexslider = function(el, options) {
    var slider = $(el);

    // making variables public
    slider.vars = $.extend({}, $.flexslider.defaults, options);

    var namespace = slider.vars.namespace,
        msGesture = window.navigator && window.navigator.msPointerEnabled && window.MSGesture,
        touch = (( "ontouchstart" in window ) || msGesture || window.DocumentTouch && document instanceof DocumentTouch) && slider.vars.touch,
        // depricating this idea, as devices are being released with both of these events
        //eventType = (touch) ? "touchend" : "click",
        eventType = "click touchend MSPointerUp",
        watchedEvent = "",
        watchedEventClearTimer,
        vertical = slider.vars.direction === "vertical",
        reverse = slider.vars.reverse,
        carousel = (slider.vars.itemWidth > 0),
        fade = slider.vars.animation === "fade",
        asNav = slider.vars.asNavFor !== "",
        methods = {},
        focused = true;

    // Store a reference to the slider object
    $.data(el, "flexslider", slider);

    // Private slider methods
    methods = {
      init: function() {
        slider.animating = false;
        // Get current slide and make sure it is a number
        slider.currentSlide = parseInt( ( slider.vars.startAt ? slider.vars.startAt : 0), 10 );
        if ( isNaN( slider.currentSlide ) ) slider.currentSlide = 0;
        slider.animatingTo = slider.currentSlide;
        slider.atEnd = (slider.currentSlide === 0 || slider.currentSlide === slider.last);
        slider.containerSelector = slider.vars.selector.substr(0,slider.vars.selector.search(' '));
        slider.slides = $(slider.vars.selector, slider);
        slider.container = $(slider.containerSelector, slider);
        slider.count = slider.slides.length;
        // SYNC:
        slider.syncExists = $(slider.vars.sync).length > 0;
        // SLIDE:
        if (slider.vars.animation === "slide") slider.vars.animation = "swing";
        slider.prop = (vertical) ? "top" : "marginLeft";
        slider.args = {};
        // SLIDESHOW:
        slider.manualPause = false;
        slider.stopped = false;
        //PAUSE WHEN INVISIBLE
        slider.started = false;
        slider.startTimeout = null;
        // TOUCH/USECSS:
        slider.transitions = !slider.vars.video && !fade && slider.vars.useCSS && (function() {
          var obj = document.createElement('div'),
              props = ['perspectiveProperty', 'WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective'];
          for (var i in props) {
            if ( obj.style[ props[i] ] !== undefined ) {
              slider.pfx = props[i].replace('Perspective','').toLowerCase();
              slider.prop = "-" + slider.pfx + "-transform";
              return true;
            }
          }
          return false;
        }());
        slider.ensureAnimationEnd = '';
        // CONTROLSCONTAINER:
        if (slider.vars.controlsContainer !== "") slider.controlsContainer = $(slider.vars.controlsContainer).length > 0 && $(slider.vars.controlsContainer);
        // MANUAL:
        if (slider.vars.manualControls !== "") slider.manualControls = $(slider.vars.manualControls).length > 0 && $(slider.vars.manualControls);

        // RANDOMIZE:
        if (slider.vars.randomize) {
          slider.slides.sort(function() { return (Math.round(Math.random())-0.5); });
          slider.container.empty().append(slider.slides);
        }

        slider.doMath();

        // INIT
        slider.setup("init");

        // CONTROLNAV:
        if (slider.vars.controlNav) methods.controlNav.setup();

        // DIRECTIONNAV:
        if (slider.vars.directionNav) methods.directionNav.setup();

        // KEYBOARD:
        if (slider.vars.keyboard && ($(slider.containerSelector).length === 1 || slider.vars.multipleKeyboard)) {
          $(document).bind('keyup', function(event) {
            var keycode = event.keyCode;
            if (!slider.animating && (keycode === 39 || keycode === 37)) {
              var target = (keycode === 39) ? slider.getTarget('next') :
                           (keycode === 37) ? slider.getTarget('prev') : false;
              slider.flexAnimate(target, slider.vars.pauseOnAction);
            }
          });
        }
        // MOUSEWHEEL:
        if (slider.vars.mousewheel) {
          slider.bind('mousewheel', function(event, delta, deltaX, deltaY) {
            event.preventDefault();
            var target = (delta < 0) ? slider.getTarget('next') : slider.getTarget('prev');
            slider.flexAnimate(target, slider.vars.pauseOnAction);
          });
        }

        // PAUSEPLAY
        if (slider.vars.pausePlay) methods.pausePlay.setup();

        //PAUSE WHEN INVISIBLE
        if (slider.vars.slideshow && slider.vars.pauseInvisible) methods.pauseInvisible.init();

        // SLIDSESHOW
        if (slider.vars.slideshow) {
          if (slider.vars.pauseOnHover) {
            slider.hover(function() {
              if (!slider.manualPlay && !slider.manualPause) slider.pause();
            }, function() {
              if (!slider.manualPause && !slider.manualPlay && !slider.stopped) slider.play();
            });
          }
          // initialize animation
          //If we're visible, or we don't use PageVisibility API
          if(!slider.vars.pauseInvisible || !methods.pauseInvisible.isHidden()) {
            (slider.vars.initDelay > 0) ? slider.startTimeout = setTimeout(slider.play, slider.vars.initDelay) : slider.play();
          }
        }

        // ASNAV:
        if (asNav) methods.asNav.setup();

        // TOUCH
        if (touch && slider.vars.touch) methods.touch();

        // FADE&&SMOOTHHEIGHT || SLIDE:
        if (!fade || (fade && slider.vars.smoothHeight)) $(window).bind("resize orientationchange focus", methods.resize);

        slider.find("img").attr("draggable", "false");

        // API: start() Callback
        setTimeout(function(){
          slider.vars.start(slider);
        }, 200);
      },
      asNav: {
        setup: function() {
          slider.asNav = true;
          slider.animatingTo = Math.floor(slider.currentSlide/slider.move);
          slider.currentItem = slider.currentSlide;
          slider.slides.removeClass(namespace + "active-slide").eq(slider.currentItem).addClass(namespace + "active-slide");
          if(!msGesture){
              slider.slides.on(eventType, function(e){
                e.preventDefault();
                var $slide = $(this),
                    target = $slide.index();
                var posFromLeft = $slide.offset().left - $(slider).scrollLeft(); // Find position of slide relative to left of slider container
                if( posFromLeft <= 0 && $slide.hasClass( namespace + 'active-slide' ) ) {
                  slider.flexAnimate(slider.getTarget("prev"), true);
                } else if (!$(slider.vars.asNavFor).data('flexslider').animating && !$slide.hasClass(namespace + "active-slide")) {
                  slider.direction = (slider.currentItem < target) ? "next" : "prev";
                  slider.flexAnimate(target, slider.vars.pauseOnAction, false, true, true);
                }
              });
          }else{
              el._slider = slider;
              slider.slides.each(function (){
                  var that = this;
                  that._gesture = new MSGesture();
                  that._gesture.target = that;
                  that.addEventListener("MSPointerDown", function (e){
                      e.preventDefault();
                      if(e.currentTarget._gesture)
                          e.currentTarget._gesture.addPointer(e.pointerId);
                  }, false);
                  that.addEventListener("MSGestureTap", function (e){
                      e.preventDefault();
                      var $slide = $(this),
                          target = $slide.index();
                      if (!$(slider.vars.asNavFor).data('flexslider').animating && !$slide.hasClass('active')) {
                          slider.direction = (slider.currentItem < target) ? "next" : "prev";
                          slider.flexAnimate(target, slider.vars.pauseOnAction, false, true, true);
                      }
                  });
              });
          }
        }
      },
      controlNav: {
        setup: function() {
          if (!slider.manualControls) {
            methods.controlNav.setupPaging();
          } else { // MANUALCONTROLS:
            methods.controlNav.setupManual();
          }
        },
        setupPaging: function() {
          var type = (slider.vars.controlNav === "thumbnails") ? 'control-thumbs' : 'control-paging',
              j = 1,
              item,
              slide;

          slider.controlNavScaffold = $('<ol class="'+ namespace + 'control-nav ' + namespace + type + '"></ol>');

          if (slider.pagingCount > 1) {
            for (var i = 0; i < slider.pagingCount; i++) {
              slide = slider.slides.eq(i);
              item = (slider.vars.controlNav === "thumbnails") ? '<img src="' + slide.attr( 'data-thumb' ) + '"/>' : '<a>' + j + '</a>';
              if ( 'thumbnails' === slider.vars.controlNav && true === slider.vars.thumbCaptions ) {
                var captn = slide.attr( 'data-thumbcaption' );
                if ( '' != captn && undefined != captn ) item += '<span class="' + namespace + 'caption">' + captn + '</span>';
              }
              slider.controlNavScaffold.append('<li>' + item + '</li>');
              j++;
            }
          }

          // CONTROLSCONTAINER:
          (slider.controlsContainer) ? $(slider.controlsContainer).append(slider.controlNavScaffold) : slider.append(slider.controlNavScaffold);
          methods.controlNav.set();

          methods.controlNav.active();

          slider.controlNavScaffold.delegate('a, img', eventType, function(event) {
            event.preventDefault();

            if (watchedEvent === "" || watchedEvent === event.type) {
              var $this = $(this),
                  target = slider.controlNav.index($this);

              if (!$this.hasClass(namespace + 'active')) {
                slider.direction = (target > slider.currentSlide) ? "next" : "prev";
                slider.flexAnimate(target, slider.vars.pauseOnAction);
              }
            }

            // setup flags to prevent event duplication
            if (watchedEvent === "") {
              watchedEvent = event.type;
            }
            methods.setToClearWatchedEvent();

          });
        },
        setupManual: function() {
          slider.controlNav = slider.manualControls;
          methods.controlNav.active();

          slider.controlNav.bind(eventType, function(event) {
            event.preventDefault();

            if (watchedEvent === "" || watchedEvent === event.type) {
              var $this = $(this),
                  target = slider.controlNav.index($this);

              if (!$this.hasClass(namespace + 'active')) {
                (target > slider.currentSlide) ? slider.direction = "next" : slider.direction = "prev";
                slider.flexAnimate(target, slider.vars.pauseOnAction);
              }
            }

            // setup flags to prevent event duplication
            if (watchedEvent === "") {
              watchedEvent = event.type;
            }
            methods.setToClearWatchedEvent();
          });
        },
        set: function() {
          var selector = (slider.vars.controlNav === "thumbnails") ? 'img' : 'a';
          slider.controlNav = $('.' + namespace + 'control-nav li ' + selector, (slider.controlsContainer) ? slider.controlsContainer : slider);
        },
        active: function() {
          slider.controlNav.removeClass(namespace + "active").eq(slider.animatingTo).addClass(namespace + "active");
        },
        update: function(action, pos) {
          if (slider.pagingCount > 1 && action === "add") {
            slider.controlNavScaffold.append($('<li><a>' + slider.count + '</a></li>'));
          } else if (slider.pagingCount === 1) {
            slider.controlNavScaffold.find('li').remove();
          } else {
            slider.controlNav.eq(pos).closest('li').remove();
          }
          methods.controlNav.set();
          (slider.pagingCount > 1 && slider.pagingCount !== slider.controlNav.length) ? slider.update(pos, action) : methods.controlNav.active();
        }
      },
      directionNav: {
        setup: function() {
          var directionNavScaffold = $('<ul class="' + namespace + 'direction-nav"><li><a class="' + namespace + 'prev" href="#">' + slider.vars.prevText + '</a></li><li><a class="' + namespace + 'next" href="#">' + slider.vars.nextText + '</a></li></ul>');

          // CONTROLSCONTAINER:
          if (slider.controlsContainer) {
            $(slider.controlsContainer).append(directionNavScaffold);
            slider.directionNav = $('.' + namespace + 'direction-nav li a', slider.controlsContainer);
          } else {
            slider.append(directionNavScaffold);
            slider.directionNav = $('.' + namespace + 'direction-nav li a', slider);
          }

          methods.directionNav.update();

          slider.directionNav.bind(eventType, function(event) {
            event.preventDefault();
            var target;

            if (watchedEvent === "" || watchedEvent === event.type) {
              target = ($(this).hasClass(namespace + 'next')) ? slider.getTarget('next') : slider.getTarget('prev');
              slider.flexAnimate(target, slider.vars.pauseOnAction);
            }

            // setup flags to prevent event duplication
            if (watchedEvent === "") {
              watchedEvent = event.type;
            }
            methods.setToClearWatchedEvent();
          });
        },
        update: function() {
          var disabledClass = namespace + 'disabled';
          if (slider.pagingCount === 1) {
            slider.directionNav.addClass(disabledClass).attr('tabindex', '-1');
          } else if (!slider.vars.animationLoop) {
            if (slider.animatingTo === 0) {
              slider.directionNav.removeClass(disabledClass).filter('.' + namespace + "prev").addClass(disabledClass).attr('tabindex', '-1');
            } else if (slider.animatingTo === slider.last) {
              slider.directionNav.removeClass(disabledClass).filter('.' + namespace + "next").addClass(disabledClass).attr('tabindex', '-1');
            } else {
              slider.directionNav.removeClass(disabledClass).removeAttr('tabindex');
            }
          } else {
            slider.directionNav.removeClass(disabledClass).removeAttr('tabindex');
          }
        }
      },
      pausePlay: {
        setup: function() {
          var pausePlayScaffold = $('<div class="' + namespace + 'pauseplay"><a></a></div>');

          // CONTROLSCONTAINER:
          if (slider.controlsContainer) {
            slider.controlsContainer.append(pausePlayScaffold);
            slider.pausePlay = $('.' + namespace + 'pauseplay a', slider.controlsContainer);
          } else {
            slider.append(pausePlayScaffold);
            slider.pausePlay = $('.' + namespace + 'pauseplay a', slider);
          }

          methods.pausePlay.update((slider.vars.slideshow) ? namespace + 'pause' : namespace + 'play');

          slider.pausePlay.bind(eventType, function(event) {
            event.preventDefault();

            if (watchedEvent === "" || watchedEvent === event.type) {
              if ($(this).hasClass(namespace + 'pause')) {
                slider.manualPause = true;
                slider.manualPlay = false;
                slider.pause();
              } else {
                slider.manualPause = false;
                slider.manualPlay = true;
                slider.play();
              }
            }

            // setup flags to prevent event duplication
            if (watchedEvent === "") {
              watchedEvent = event.type;
            }
            methods.setToClearWatchedEvent();
          });
        },
        update: function(state) {
          (state === "play") ? slider.pausePlay.removeClass(namespace + 'pause').addClass(namespace + 'play').html(slider.vars.playText) : slider.pausePlay.removeClass(namespace + 'play').addClass(namespace + 'pause').html(slider.vars.pauseText);
        }
      },
      touch: function() {
        var startX,
          startY,
          offset,
          cwidth,
          dx,
          startT,
          scrolling = false,
          localX = 0,
          localY = 0,
          accDx = 0;

        if(!msGesture){
            el.addEventListener('touchstart', onTouchStart, false);

            function onTouchStart(e) {
              if (slider.animating) {
                e.preventDefault();
              } else if ( ( window.navigator.msPointerEnabled ) || e.touches.length === 1 ) {
                slider.pause();
                // CAROUSEL:
                cwidth = (vertical) ? slider.h : slider. w;
                startT = Number(new Date());
                // CAROUSEL:

                // Local vars for X and Y points.
                localX = e.touches[0].pageX;
                localY = e.touches[0].pageY;

                offset = (carousel && reverse && slider.animatingTo === slider.last) ? 0 :
                         (carousel && reverse) ? slider.limit - (((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo) :
                         (carousel && slider.currentSlide === slider.last) ? slider.limit :
                         (carousel) ? ((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.currentSlide :
                         (reverse) ? (slider.last - slider.currentSlide + slider.cloneOffset) * cwidth : (slider.currentSlide + slider.cloneOffset) * cwidth;
                startX = (vertical) ? localY : localX;
                startY = (vertical) ? localX : localY;

                el.addEventListener('touchmove', onTouchMove, false);
                el.addEventListener('touchend', onTouchEnd, false);
              }
            }

            function onTouchMove(e) {
              // Local vars for X and Y points.

              localX = e.touches[0].pageX;
              localY = e.touches[0].pageY;

              dx = (vertical) ? startX - localY : startX - localX;
              scrolling = (vertical) ? (Math.abs(dx) < Math.abs(localX - startY)) : (Math.abs(dx) < Math.abs(localY - startY));

              var fxms = 500;

              if ( ! scrolling || Number( new Date() ) - startT > fxms ) {
                e.preventDefault();
                if (!fade && slider.transitions) {
                  if (!slider.vars.animationLoop) {
                    dx = dx/((slider.currentSlide === 0 && dx < 0 || slider.currentSlide === slider.last && dx > 0) ? (Math.abs(dx)/cwidth+2) : 1);
                  }
                  slider.setProps(offset + dx, "setTouch");
                }
              }
            }

            function onTouchEnd(e) {
              // finish the touch by undoing the touch session
              el.removeEventListener('touchmove', onTouchMove, false);

              if (slider.animatingTo === slider.currentSlide && !scrolling && !(dx === null)) {
                var updateDx = (reverse) ? -dx : dx,
                    target = (updateDx > 0) ? slider.getTarget('next') : slider.getTarget('prev');

                if (slider.canAdvance(target) && (Number(new Date()) - startT < 550 && Math.abs(updateDx) > 50 || Math.abs(updateDx) > cwidth/2)) {
                  slider.flexAnimate(target, slider.vars.pauseOnAction);
                } else {
                  if (!fade) slider.flexAnimate(slider.currentSlide, slider.vars.pauseOnAction, true);
                }
              }
              el.removeEventListener('touchend', onTouchEnd, false);

              startX = null;
              startY = null;
              dx = null;
              offset = null;
            }
        }else{
            el.style.msTouchAction = "none";
            el._gesture = new MSGesture();
            el._gesture.target = el;
            el.addEventListener("MSPointerDown", onMSPointerDown, false);
            el._slider = slider;
            el.addEventListener("MSGestureChange", onMSGestureChange, false);
            el.addEventListener("MSGestureEnd", onMSGestureEnd, false);

            function onMSPointerDown(e){
                e.stopPropagation();
                if (slider.animating) {
                    e.preventDefault();
                }else{
                    slider.pause();
                    el._gesture.addPointer(e.pointerId);
                    accDx = 0;
                    cwidth = (vertical) ? slider.h : slider. w;
                    startT = Number(new Date());
                    // CAROUSEL:

                    offset = (carousel && reverse && slider.animatingTo === slider.last) ? 0 :
                        (carousel && reverse) ? slider.limit - (((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo) :
                            (carousel && slider.currentSlide === slider.last) ? slider.limit :
                                (carousel) ? ((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.currentSlide :
                                    (reverse) ? (slider.last - slider.currentSlide + slider.cloneOffset) * cwidth : (slider.currentSlide + slider.cloneOffset) * cwidth;
                }
            }

            function onMSGestureChange(e) {
                e.stopPropagation();
                var slider = e.target._slider;
                if(!slider){
                    return;
                }
                var transX = -e.translationX,
                    transY = -e.translationY;

                //Accumulate translations.
                accDx = accDx + ((vertical) ? transY : transX);
                dx = accDx;
                scrolling = (vertical) ? (Math.abs(accDx) < Math.abs(-transX)) : (Math.abs(accDx) < Math.abs(-transY));

                if(e.detail === e.MSGESTURE_FLAG_INERTIA){
                    setImmediate(function (){
                        el._gesture.stop();
                    });

                    return;
                }

                if (!scrolling || Number(new Date()) - startT > 500) {
                    e.preventDefault();
                    if (!fade && slider.transitions) {
                        if (!slider.vars.animationLoop) {
                            dx = accDx / ((slider.currentSlide === 0 && accDx < 0 || slider.currentSlide === slider.last && accDx > 0) ? (Math.abs(accDx) / cwidth + 2) : 1);
                        }
                        slider.setProps(offset + dx, "setTouch");
                    }
                }
            }

            function onMSGestureEnd(e) {
                e.stopPropagation();
                var slider = e.target._slider;
                if(!slider){
                    return;
                }
                if (slider.animatingTo === slider.currentSlide && !scrolling && !(dx === null)) {
                    var updateDx = (reverse) ? -dx : dx,
                        target = (updateDx > 0) ? slider.getTarget('next') : slider.getTarget('prev');

                    if (slider.canAdvance(target) && (Number(new Date()) - startT < 550 && Math.abs(updateDx) > 50 || Math.abs(updateDx) > cwidth/2)) {
                        slider.flexAnimate(target, slider.vars.pauseOnAction);
                    } else {
                        if (!fade) slider.flexAnimate(slider.currentSlide, slider.vars.pauseOnAction, true);
                    }
                }

                startX = null;
                startY = null;
                dx = null;
                offset = null;
                accDx = 0;
            }
        }
      },
      resize: function() {
        if (!slider.animating && slider.is(':visible')) {
          if (!carousel) slider.doMath();

          if (fade) {
            // SMOOTH HEIGHT:
            methods.smoothHeight();
          } else if (carousel) { //CAROUSEL:
            slider.slides.width(slider.computedW);
            slider.update(slider.pagingCount);
            slider.setProps();
          }
          else if (vertical) { //VERTICAL:
            slider.viewport.height(slider.h);
            slider.setProps(slider.h, "setTotal");
          } else {
            // SMOOTH HEIGHT:
            if (slider.vars.smoothHeight) methods.smoothHeight();
            slider.newSlides.width(slider.computedW);
            slider.setProps(slider.computedW, "setTotal");
          }
        }
      },
      smoothHeight: function(dur) {
        if (!vertical || fade) {
          var $obj = (fade) ? slider : slider.viewport;
          (dur) ? $obj.animate({"height": slider.slides.eq(slider.animatingTo).height()}, dur) : $obj.height(slider.slides.eq(slider.animatingTo).height());
        }
      },
      sync: function(action) {
        var $obj = $(slider.vars.sync).data("flexslider"),
            target = slider.animatingTo;

        switch (action) {
          case "animate": $obj.flexAnimate(target, slider.vars.pauseOnAction, false, true); break;
          case "play": if (!$obj.playing && !$obj.asNav) { $obj.play(); } break;
          case "pause": $obj.pause(); break;
        }
      },
      uniqueID: function($clone) {
        $clone.find( '[id]' ).each(function() {
          var $this = $(this);
          $this.attr( 'id', $this.attr( 'id' ) + '_clone' );
        });
        return $clone;
      },
      pauseInvisible: {
        visProp: null,
        init: function() {
          var prefixes = ['webkit','moz','ms','o'];

          if ('hidden' in document) return 'hidden';
          for (var i = 0; i < prefixes.length; i++) {
            if ((prefixes[i] + 'Hidden') in document)
            methods.pauseInvisible.visProp = prefixes[i] + 'Hidden';
          }
          if (methods.pauseInvisible.visProp) {
            var evtname = methods.pauseInvisible.visProp.replace(/[H|h]idden/,'') + 'visibilitychange';
            document.addEventListener(evtname, function() {
              if (methods.pauseInvisible.isHidden()) {
                if(slider.startTimeout) clearTimeout(slider.startTimeout); //If clock is ticking, stop timer and prevent from starting while invisible
                else slider.pause(); //Or just pause
              }
              else {
                if(slider.started) slider.play(); //Initiated before, just play
                else (slider.vars.initDelay > 0) ? setTimeout(slider.play, slider.vars.initDelay) : slider.play(); //Didn't init before: simply init or wait for it
              }
            });
          }
        },
        isHidden: function() {
          return document[methods.pauseInvisible.visProp] || false;
        }
      },
      setToClearWatchedEvent: function() {
        clearTimeout(watchedEventClearTimer);
        watchedEventClearTimer = setTimeout(function() {
          watchedEvent = "";
        }, 3000);
      }
    };

    // public methods
    slider.flexAnimate = function(target, pause, override, withSync, fromNav) {
      if (!slider.vars.animationLoop && target !== slider.currentSlide) {
        slider.direction = (target > slider.currentSlide) ? "next" : "prev";
      }

      if (asNav && slider.pagingCount === 1) slider.direction = (slider.currentItem < target) ? "next" : "prev";

      if (!slider.animating && (slider.canAdvance(target, fromNav) || override) && slider.is(":visible")) {
        if (asNav && withSync) {
          var master = $(slider.vars.asNavFor).data('flexslider');
          slider.atEnd = target === 0 || target === slider.count - 1;
          master.flexAnimate(target, true, false, true, fromNav);
          slider.direction = (slider.currentItem < target) ? "next" : "prev";
          master.direction = slider.direction;

          if (Math.ceil((target + 1)/slider.visible) - 1 !== slider.currentSlide && target !== 0) {
            slider.currentItem = target;
            slider.slides.removeClass(namespace + "active-slide").eq(target).addClass(namespace + "active-slide");
            target = Math.floor(target/slider.visible);
          } else {
            slider.currentItem = target;
            slider.slides.removeClass(namespace + "active-slide").eq(target).addClass(namespace + "active-slide");
            return false;
          }
        }

        slider.animating = true;
        slider.animatingTo = target;

        // SLIDESHOW:
        if (pause) slider.pause();

        // API: before() animation Callback
        slider.vars.before(slider);

        // SYNC:
        if (slider.syncExists && !fromNav) methods.sync("animate");

        // CONTROLNAV
        if (slider.vars.controlNav) methods.controlNav.active();

        // !CAROUSEL:
        // CANDIDATE: slide active class (for add/remove slide)
        if (!carousel) slider.slides.removeClass(namespace + 'active-slide').eq(target).addClass(namespace + 'active-slide');

        // INFINITE LOOP:
        // CANDIDATE: atEnd
        slider.atEnd = target === 0 || target === slider.last;

        // DIRECTIONNAV:
        if (slider.vars.directionNav) methods.directionNav.update();

        if (target === slider.last) {
          // API: end() of cycle Callback
          slider.vars.end(slider);
          // SLIDESHOW && !INFINITE LOOP:
          if (!slider.vars.animationLoop) slider.pause();
        }

        // SLIDE:
        if (!fade) {
          var dimension = (vertical) ? slider.slides.filter(':first').height() : slider.computedW,
              margin, slideString, calcNext;

          // INFINITE LOOP / REVERSE:
          if (carousel) {
            //margin = (slider.vars.itemWidth > slider.w) ? slider.vars.itemMargin * 2 : slider.vars.itemMargin;
            margin = slider.vars.itemMargin;
            calcNext = ((slider.itemW + margin) * slider.move) * slider.animatingTo;
            slideString = (calcNext > slider.limit && slider.visible !== 1) ? slider.limit : calcNext;
          } else if (slider.currentSlide === 0 && target === slider.count - 1 && slider.vars.animationLoop && slider.direction !== "next") {
            slideString = (reverse) ? (slider.count + slider.cloneOffset) * dimension : 0;
          } else if (slider.currentSlide === slider.last && target === 0 && slider.vars.animationLoop && slider.direction !== "prev") {
            slideString = (reverse) ? 0 : (slider.count + 1) * dimension;
          } else {
            slideString = (reverse) ? ((slider.count - 1) - target + slider.cloneOffset) * dimension : (target + slider.cloneOffset) * dimension;
          }
          slider.setProps(slideString, "", slider.vars.animationSpeed);
          if (slider.transitions) {
            if (!slider.vars.animationLoop || !slider.atEnd) {
              slider.animating = false;
              slider.currentSlide = slider.animatingTo;
            }
            
            // Unbind previous transitionEnd events and re-bind new transitionEnd event
            slider.container.unbind("webkitTransitionEnd transitionend");
            slider.container.bind("webkitTransitionEnd transitionend", function() {
              clearTimeout(slider.ensureAnimationEnd);
              slider.wrapup(dimension);
            });

            // Insurance for the ever-so-fickle transitionEnd event
            clearTimeout(slider.ensureAnimationEnd);
            slider.ensureAnimationEnd = setTimeout(function() {
              slider.wrapup(dimension);
            }, slider.vars.animationSpeed + 100);

          } else {
            slider.container.animate(slider.args, slider.vars.animationSpeed, slider.vars.easing, function(){
              slider.wrapup(dimension);
            });
          }
        } else { // FADE:
          if (!touch) {
            //slider.slides.eq(slider.currentSlide).fadeOut(slider.vars.animationSpeed, slider.vars.easing);
            //slider.slides.eq(target).fadeIn(slider.vars.animationSpeed, slider.vars.easing, slider.wrapup);

            slider.slides.eq(slider.currentSlide).css({"zIndex": 1}).animate({"opacity": 0}, slider.vars.animationSpeed, slider.vars.easing);
            slider.slides.eq(target).css({"zIndex": 2}).animate({"opacity": 1}, slider.vars.animationSpeed, slider.vars.easing, slider.wrapup);

          } else {
            slider.slides.eq(slider.currentSlide).css({ "opacity": 0, "zIndex": 1 });
            slider.slides.eq(target).css({ "opacity": 1, "zIndex": 2 });
            slider.wrapup(dimension);
          }
        }
        // SMOOTH HEIGHT:
        if (slider.vars.smoothHeight) methods.smoothHeight(slider.vars.animationSpeed);
      }
    };
    slider.wrapup = function(dimension) {
      // SLIDE:
      if (!fade && !carousel) {
        if (slider.currentSlide === 0 && slider.animatingTo === slider.last && slider.vars.animationLoop) {
          slider.setProps(dimension, "jumpEnd");
        } else if (slider.currentSlide === slider.last && slider.animatingTo === 0 && slider.vars.animationLoop) {
          slider.setProps(dimension, "jumpStart");
        }
      }
      slider.animating = false;
      slider.currentSlide = slider.animatingTo;
      // API: after() animation Callback
      slider.vars.after(slider);
    };

    // SLIDESHOW:
    slider.animateSlides = function() {
      if (!slider.animating && focused ) slider.flexAnimate(slider.getTarget("next"));
    };
    // SLIDESHOW:
    slider.pause = function() {
      clearInterval(slider.animatedSlides);
      slider.animatedSlides = null;
      slider.playing = false;
      // PAUSEPLAY:
      if (slider.vars.pausePlay) methods.pausePlay.update("play");
      // SYNC:
      if (slider.syncExists) methods.sync("pause");
    };
    // SLIDESHOW:
    slider.play = function() {
      if (slider.playing) clearInterval(slider.animatedSlides);
      slider.animatedSlides = slider.animatedSlides || setInterval(slider.animateSlides, slider.vars.slideshowSpeed);
      slider.started = slider.playing = true;
      // PAUSEPLAY:
      if (slider.vars.pausePlay) methods.pausePlay.update("pause");
      // SYNC:
      if (slider.syncExists) methods.sync("play");
    };
    // STOP:
    slider.stop = function () {
      slider.pause();
      slider.stopped = true;
    };
    slider.canAdvance = function(target, fromNav) {
      // ASNAV:
      var last = (asNav) ? slider.pagingCount - 1 : slider.last;
      return (fromNav) ? true :
             (asNav && slider.currentItem === slider.count - 1 && target === 0 && slider.direction === "prev") ? true :
             (asNav && slider.currentItem === 0 && target === slider.pagingCount - 1 && slider.direction !== "next") ? false :
             (target === slider.currentSlide && !asNav) ? false :
             (slider.vars.animationLoop) ? true :
             (slider.atEnd && slider.currentSlide === 0 && target === last && slider.direction !== "next") ? false :
             (slider.atEnd && slider.currentSlide === last && target === 0 && slider.direction === "next") ? false :
             true;
    };
    slider.getTarget = function(dir) {
      slider.direction = dir;
      if (dir === "next") {
        return (slider.currentSlide === slider.last) ? 0 : slider.currentSlide + 1;
      } else {
        return (slider.currentSlide === 0) ? slider.last : slider.currentSlide - 1;
      }
    };

    // SLIDE:
    slider.setProps = function(pos, special, dur) {
      var target = (function() {
        var posCheck = (pos) ? pos : ((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo,
            posCalc = (function() {
              if (carousel) {
                return (special === "setTouch") ? pos :
                       (reverse && slider.animatingTo === slider.last) ? 0 :
                       (reverse) ? slider.limit - (((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo) :
                       (slider.animatingTo === slider.last) ? slider.limit : posCheck;
              } else {
                switch (special) {
                  case "setTotal": return (reverse) ? ((slider.count - 1) - slider.currentSlide + slider.cloneOffset) * pos : (slider.currentSlide + slider.cloneOffset) * pos;
                  case "setTouch": return (reverse) ? pos : pos;
                  case "jumpEnd": return (reverse) ? pos : slider.count * pos;
                  case "jumpStart": return (reverse) ? slider.count * pos : pos;
                  default: return pos;
                }
              }
            }());

            return (posCalc * -1) + "px";
          }());

      if (slider.transitions) {
        target = (vertical) ? "translate3d(0," + target + ",0)" : "translate3d(" + target + ",0,0)";
        dur = (dur !== undefined) ? (dur/1000) + "s" : "0s";
        slider.container.css("-" + slider.pfx + "-transition-duration", dur);
         slider.container.css("transition-duration", dur);
      }

      slider.args[slider.prop] = target;
      if (slider.transitions || dur === undefined) slider.container.css(slider.args);

      slider.container.css('transform',target);
    };

    slider.setup = function(type) {
      // SLIDE:
      if (!fade) {
        var sliderOffset, arr;

        if (type === "init") {
          slider.viewport = $('<div class="' + namespace + 'viewport"></div>').css({"overflow": "hidden", "position": "relative"}).appendTo(slider).append(slider.container);
          // INFINITE LOOP:
          slider.cloneCount = 0;
          slider.cloneOffset = 0;
          // REVERSE:
          if (reverse) {
            arr = $.makeArray(slider.slides).reverse();
            slider.slides = $(arr);
            slider.container.empty().append(slider.slides);
          }
        }
        // INFINITE LOOP && !CAROUSEL:
        if (slider.vars.animationLoop && !carousel) {
          slider.cloneCount = 2;
          slider.cloneOffset = 1;
          // clear out old clones
          if (type !== "init") slider.container.find('.clone').remove();
          // slider.container.append(slider.slides.first().clone().addClass('clone').attr('aria-hidden', 'true')).prepend(slider.slides.last().clone().addClass('clone').attr('aria-hidden', 'true'));
		      methods.uniqueID( slider.slides.first().clone().addClass('clone').attr('aria-hidden', 'true') ).appendTo( slider.container );
		      methods.uniqueID( slider.slides.last().clone().addClass('clone').attr('aria-hidden', 'true') ).prependTo( slider.container );
        }
        slider.newSlides = $(slider.vars.selector, slider);

        sliderOffset = (reverse) ? slider.count - 1 - slider.currentSlide + slider.cloneOffset : slider.currentSlide + slider.cloneOffset;
        // VERTICAL:
        if (vertical && !carousel) {
          slider.container.height((slider.count + slider.cloneCount) * 200 + "%").css("position", "absolute").width("100%");
          setTimeout(function(){
            slider.newSlides.css({"display": "block"});
            slider.doMath();
            slider.viewport.height(slider.h);
            slider.setProps(sliderOffset * slider.h, "init");
          }, (type === "init") ? 100 : 0);
        } else {
          slider.container.width((slider.count + slider.cloneCount) * 200 + "%");
          slider.setProps(sliderOffset * slider.computedW, "init");
          setTimeout(function(){
            slider.doMath();
            slider.newSlides.css({"width": slider.computedW, "float": "left", "display": "block"});
            // SMOOTH HEIGHT:
            if (slider.vars.smoothHeight) methods.smoothHeight();
          }, (type === "init") ? 100 : 0);
        }
      } else { // FADE:
        slider.slides.css({"width": "100%", "float": "left", "marginRight": "-100%", "position": "relative"});
        if (type === "init") {
          if (!touch) {
            //slider.slides.eq(slider.currentSlide).fadeIn(slider.vars.animationSpeed, slider.vars.easing);
            slider.slides.css({ "opacity": 0, "display": "block", "zIndex": 1 }).eq(slider.currentSlide).css({"zIndex": 2}).animate({"opacity": 1},slider.vars.animationSpeed,slider.vars.easing);
          } else {
            slider.slides.css({ "opacity": 0, "display": "block", "webkitTransition": "opacity " + slider.vars.animationSpeed / 1000 + "s ease", "zIndex": 1 }).eq(slider.currentSlide).css({ "opacity": 1, "zIndex": 2});
          }
        }
        // SMOOTH HEIGHT:
        if (slider.vars.smoothHeight) methods.smoothHeight();
      }
      // !CAROUSEL:
      // CANDIDATE: active slide
      if (!carousel) slider.slides.removeClass(namespace + "active-slide").eq(slider.currentSlide).addClass(namespace + "active-slide");

      //FlexSlider: init() Callback
      slider.vars.init(slider);
    };

    slider.doMath = function() {
      var slide = slider.slides.first(),
          slideMargin = slider.vars.itemMargin,
          minItems = slider.vars.minItems,
          maxItems = slider.vars.maxItems;

      slider.w = (slider.viewport===undefined) ? slider.width() : slider.viewport.width();
      slider.h = slide.height();
      slider.boxPadding = slide.outerWidth() - slide.width();

      // CAROUSEL:
      if (carousel) {
        slider.itemT = slider.vars.itemWidth + slideMargin;
        slider.minW = (minItems) ? minItems * slider.itemT : slider.w;
        slider.maxW = (maxItems) ? (maxItems * slider.itemT) - slideMargin : slider.w;
        slider.itemW = (slider.minW > slider.w) ? (slider.w - (slideMargin * (minItems - 1)))/minItems :
                       (slider.maxW < slider.w) ? (slider.w - (slideMargin * (maxItems - 1)))/maxItems :
                       (slider.vars.itemWidth > slider.w) ? slider.w : slider.vars.itemWidth;

        slider.visible = Math.floor(slider.w/(slider.itemW));
        slider.move = (slider.vars.move > 0 && slider.vars.move < slider.visible ) ? slider.vars.move : slider.visible;
        slider.pagingCount = Math.ceil(((slider.count - slider.visible)/slider.move) + 1);
        slider.last =  slider.pagingCount - 1;
        slider.limit = (slider.pagingCount === 1) ? 0 :
                       (slider.vars.itemWidth > slider.w) ? (slider.itemW * (slider.count - 1)) + (slideMargin * (slider.count - 1)) : ((slider.itemW + slideMargin) * slider.count) - slider.w - slideMargin;
      } else {
        slider.itemW = slider.w;
        slider.pagingCount = slider.count;
        slider.last = slider.count - 1;
      }
      slider.computedW = slider.itemW - slider.boxPadding;
    };

    slider.update = function(pos, action) {
      slider.doMath();

      // update currentSlide and slider.animatingTo if necessary
      if (!carousel) {
        if (pos < slider.currentSlide) {
          slider.currentSlide += 1;
        } else if (pos <= slider.currentSlide && pos !== 0) {
          slider.currentSlide -= 1;
        }
        slider.animatingTo = slider.currentSlide;
      }

      // update controlNav
      if (slider.vars.controlNav && !slider.manualControls) {
        if ((action === "add" && !carousel) || slider.pagingCount > slider.controlNav.length) {
          methods.controlNav.update("add");
        } else if ((action === "remove" && !carousel) || slider.pagingCount < slider.controlNav.length) {
          if (carousel && slider.currentSlide > slider.last) {
            slider.currentSlide -= 1;
            slider.animatingTo -= 1;
          }
          methods.controlNav.update("remove", slider.last);
        }
      }
      // update directionNav
      if (slider.vars.directionNav) methods.directionNav.update();

    };

    slider.addSlide = function(obj, pos) {
      var $obj = $(obj);

      slider.count += 1;
      slider.last = slider.count - 1;

      // append new slide
      if (vertical && reverse) {
        (pos !== undefined) ? slider.slides.eq(slider.count - pos).after($obj) : slider.container.prepend($obj);
      } else {
        (pos !== undefined) ? slider.slides.eq(pos).before($obj) : slider.container.append($obj);
      }

      // update currentSlide, animatingTo, controlNav, and directionNav
      slider.update(pos, "add");

      // update slider.slides
      slider.slides = $(slider.vars.selector + ':not(.clone)', slider);
      // re-setup the slider to accomdate new slide
      slider.setup();

      //FlexSlider: added() Callback
      slider.vars.added(slider);
    };
    slider.removeSlide = function(obj) {
      var pos = (isNaN(obj)) ? slider.slides.index($(obj)) : obj;

      // update count
      slider.count -= 1;
      slider.last = slider.count - 1;

      // remove slide
      if (isNaN(obj)) {
        $(obj, slider.slides).remove();
      } else {
        (vertical && reverse) ? slider.slides.eq(slider.last).remove() : slider.slides.eq(obj).remove();
      }

      // update currentSlide, animatingTo, controlNav, and directionNav
      slider.doMath();
      slider.update(pos, "remove");

      // update slider.slides
      slider.slides = $(slider.vars.selector + ':not(.clone)', slider);
      // re-setup the slider to accomdate new slide
      slider.setup();

      // FlexSlider: removed() Callback
      slider.vars.removed(slider);
    };

    //FlexSlider: Initialize
    methods.init();
  };

  // Ensure the slider isn't focussed if the window loses focus.
  $( window ).blur( function ( e ) {
    focused = false;
  }).focus( function ( e ) {
    focused = true;
  });

  //FlexSlider: Default Settings
  $.flexslider.defaults = {
    namespace: "flex-",             //{NEW} String: Prefix string attached to the class of every element generated by the plugin
    selector: ".slides > li",       //{NEW} Selector: Must match a simple pattern. '{container} > {slide}' -- Ignore pattern at your own peril
    animation: "fade",              //String: Select your animation type, "fade" or "slide"
    easing: "swing",                //{NEW} String: Determines the easing method used in jQuery transitions. jQuery easing plugin is supported!
    direction: "horizontal",        //String: Select the sliding direction, "horizontal" or "vertical"
    reverse: false,                 //{NEW} Boolean: Reverse the animation direction
    animationLoop: true,            //Boolean: Should the animation loop? If false, directionNav will received "disable" classes at either end
    smoothHeight: false,            //{NEW} Boolean: Allow height of the slider to animate smoothly in horizontal mode
    startAt: 0,                     //Integer: The slide that the slider should start on. Array notation (0 = first slide)
    slideshow: true,                //Boolean: Animate slider automatically
    slideshowSpeed: 7000,           //Integer: Set the speed of the slideshow cycling, in milliseconds
    animationSpeed: 600,            //Integer: Set the speed of animations, in milliseconds
    initDelay: 0,                   //{NEW} Integer: Set an initialization delay, in milliseconds
    randomize: false,               //Boolean: Randomize slide order
    thumbCaptions: false,           //Boolean: Whether or not to put captions on thumbnails when using the "thumbnails" controlNav.

    // Usability features
    pauseOnAction: true,            //Boolean: Pause the slideshow when interacting with control elements, highly recommended.
    pauseOnHover: false,            //Boolean: Pause the slideshow when hovering over slider, then resume when no longer hovering
    pauseInvisible: true,   		//{NEW} Boolean: Pause the slideshow when tab is invisible, resume when visible. Provides better UX, lower CPU usage.
    useCSS: true,                   //{NEW} Boolean: Slider will use CSS3 transitions if available
    touch: true,                    //{NEW} Boolean: Allow touch swipe navigation of the slider on touch-enabled devices
    video: false,                   //{NEW} Boolean: If using video in the slider, will prevent CSS3 3D Transforms to avoid graphical glitches

    // Primary Controls
    controlNav: true,               //Boolean: Create navigation for paging control of each clide? Note: Leave true for manualControls usage
    directionNav: true,             //Boolean: Create navigation for previous/next navigation? (true/false)
    prevText: "Previous",           //String: Set the text for the "previous" directionNav item
    nextText: "Next",               //String: Set the text for the "next" directionNav item

    // Secondary Navigation
    keyboard: true,                 //Boolean: Allow slider navigating via keyboard left/right keys
    multipleKeyboard: false,        //{NEW} Boolean: Allow keyboard navigation to affect multiple sliders. Default behavior cuts out keyboard navigation with more than one slider present.
    mousewheel: false,              //{UPDATED} Boolean: Requires jquery.mousewheel.js (https://github.com/brandonaaron/jquery-mousewheel) - Allows slider navigating via mousewheel
    pausePlay: false,               //Boolean: Create pause/play dynamic element
    pauseText: "Pause",             //String: Set the text for the "pause" pausePlay item
    playText: "Play",               //String: Set the text for the "play" pausePlay item

    // Special properties
    controlsContainer: "",          //{UPDATED} jQuery Object/Selector: Declare which container the navigation elements should be appended too. Default container is the FlexSlider element. Example use would be $(".flexslider-container"). Property is ignored if given element is not found.
    manualControls: "",             //{UPDATED} jQuery Object/Selector: Declare custom control navigation. Examples would be $(".flex-control-nav li") or "#tabs-nav li img", etc. The number of elements in your controlNav should match the number of slides/tabs.
    sync: "",                       //{NEW} Selector: Mirror the actions performed on this slider with another slider. Use with care.
    asNavFor: "",                   //{NEW} Selector: Internal property exposed for turning the slider into a thumbnail navigation for another slider

    // Carousel Options
    itemWidth: 0,                   //{NEW} Integer: Box-model width of individual carousel items, including horizontal borders and padding.
    itemMargin: 0,                  //{NEW} Integer: Margin between carousel items.
    minItems: 1,                    //{NEW} Integer: Minimum number of carousel items that should be visible. Items will resize fluidly when below this.
    maxItems: 0,                    //{NEW} Integer: Maxmimum number of carousel items that should be visible. Items will resize fluidly when above this limit.
    move: 0,                        //{NEW} Integer: Number of carousel items that should move on animation. If 0, slider will move all visible items.
    allowOneSlide: true,           //{NEW} Boolean: Whether or not to allow a slider comprised of a single slide

    // Callback API
    start: function(){},            //Callback: function(slider) - Fires when the slider loads the first slide
    before: function(){},           //Callback: function(slider) - Fires asynchronously with each slider animation
    after: function(){},            //Callback: function(slider) - Fires after each slider animation completes
    end: function(){},              //Callback: function(slider) - Fires when the slider reaches the last slide (asynchronous)
    added: function(){},            //{NEW} Callback: function(slider) - Fires after a slide is added
    removed: function(){},           //{NEW} Callback: function(slider) - Fires after a slide is removed
    init: function() {}             //{NEW} Callback: function(slider) - Fires after the slider is initially setup
  };

  //FlexSlider: Plugin Function
  $.fn.flexslider = function(options) {
    if (options === undefined) options = {};

    if (typeof options === "object") {
      return this.each(function() {
        var $this = $(this),
            selector = (options.selector) ? options.selector : ".slides > li",
            $slides = $this.find(selector);

      if ( ( $slides.length === 1 && options.allowOneSlide === true ) || $slides.length === 0 ) {
          $slides.fadeIn(400);
          if (options.start) options.start($this);
        } else if ($this.data('flexslider') === undefined) {
          new $.flexslider(this, options);
        }
      });
    } else {
      // Helper strings to quickly perform functions on the slider
      var $slider = $(this).data('flexslider');
      switch (options) {
        case "play": $slider.play(); break;
        case "pause": $slider.pause(); break;
        case "stop": $slider.stop(); break;
        case "next": $slider.flexAnimate($slider.getTarget("next"), true); break;
        case "prev":
        case "previous": $slider.flexAnimate($slider.getTarget("prev"), true); break;
        default: if (typeof options === "number") $slider.flexAnimate(options, true);
      }
    }
  };
})(jQuery);

/**
 * jQuery OffCanvas Menu
 * 
 * (c) 2014 Henning Kasch (Die NetzWerkstatt GmbH & Co.KG) <hkasch@die-netzwerkstatt.de>
 * Version 1.1.0
 *
 */

(function ($, window) {

    /**
     *
     * @param target
     * @param options
     * @constructor
     */
    function OffcanvasMenu(target, options) {
        this.element = target;
        this.options = options;
        this.setup();
    }

    OffcanvasMenu.prototype = {
        defaultConfig: {
            insertFunction: function (new_menu) {
                new_menu;
            },
            // when scraping the tree get the active one by this function
            determineActiveLink: function(link) {
                return link.parent('li').hasClass("active");
            },
            menuActiveClass: "active",
            menuLinkHasChildClass: "oc-link-has-child", // links that will open a child
            menuLinkClassicClass: "oc-link-link", // for links, that are really links
            backlinkClass: "oc-back", // link to return back
            titleLinkClass: "oc-title", // link to set as active on init
            backlinkText: "zurück",
            dataName: "nws-off-canvas-menu"
        },
        element: null, // the main <ul> we are building the menu from
        options: null, // settings provided by the user
        config: null, // config made from options and defaults
        linkTree: null,
        newLinkElement: null,
        /**
         * Initialize the object
         */
        setup: function () {
            this.config = $.extend(this.defaultConfig, this.options);
        },
        /**
         * Build the menu
         */
        construct: function () {
            var that = this;

            this.currentUrl = window.location.href;

            // use cached version if present
            if(this.newLinkElement) {
                this.config.insertFunction.call(this, this.newLinkElement);
                return;
            }

            // insert fake menu with loading indicator first
            this.newLinkElement = $('<nav class="oc-menu loading" />');
            this.config.insertFunction.call(that, that.newLinkElement);

            $.getJSON(this.getAjaxUrl())
                .success(function(pageTree) {
                    // remove loading indicator
                    that.newLinkElement.remove();

                    that.linkTree = pageTree;
            
                    var tree = that.createListTree(that.linkTree, that.element.data('oc-title'));

                    // make initial menu active
                    var active_item = $("." + that.config.menuActiveClass, tree);
                    var active_menu;
                    if(active_item.length) {
                        active_menu = $("ul", active_item).eq(0);

                        if(!active_menu.length) {
                            active_menu = active_item.parent();
                        }
                    }
                    else {
                        active_menu = tree;
                    }

                    that.makeActive(active_menu);

                    that.newLinkElement = $('<nav class="oc-menu" />').append(tree);
                    that.config.insertFunction.call(that, that.newLinkElement);
                });
        },
        /**
         * Kill the menu
         */
        destruct: function () {
            this.newLinkElement.detach();
        },
        /**
         * Create a <ul>-element from given link-tree
         */
        createListTree: function (link_tree, title) {
            var root_node = $("<ul class=\"oc-menu-list\" />");
            var that = this;
            var activate = null;

            if(title) {
                $('<li class="oc-title" />').text(title).appendTo(root_node);
            }

            $.each(link_tree, function (index, tree_node) {
                var link_wrap = $("<li/>").appendTo(root_node);
                var link = $("<a/>")
                    .text(tree_node.title)
                    .attr("href", tree_node.uri)
                    .appendTo(link_wrap);
                var child_tree = null;

                if(tree_node.isTitleLink) {
                    // parent link
                    link.addClass(that.config.titleLinkClass);
                }

                if (tree_node.children) {
                    // prepend the link of the level before (to make it reachable)
                    tree_node.children.unshift({
                        uri: tree_node.uri,
                        title: tree_node.title,
                        isTitleLink: true
                    });
                    
                    // add class for links with children
                    link.addClass(that.config.menuLinkHasChildClass);

                    // insert the sub-menu after the link
                    link.after(
                        child_tree = that.createListTree(tree_node.children)
                    );

                    // insert back-link on top of sub-menu
                    child_tree.prepend(that.getBackLink());

                    // bind event listeners to toggle the submenu
                    that.bindSubmenuToggleEventlisteners(link);
                } else {
                    // no child - means that link will follow it's href
                    link.addClass(that.config.menuLinkNormalClass);
                }

                // activate the child tree of given link or this, if it has no childs
                if(tree_node.uri === that.currentUrl) {
                    link_wrap.addClass(that.config.menuActiveClass);
                }
            });

            return root_node;
        },
        /**
         * Bind event listeners to a link within the menu to toggle the submenu
         *
         * @param link
         * @param li
         * @param ul
         */
        bindSubmenuToggleEventlisteners: function (link) {
            var that = this;
            link.on("click", function () {
                // make next <ul> active
                that.makeActive($(this).next("ul"));

                return false;
            });
        },
        getBackLink: function () {
            var that = this;
            return $("<a/>")
                .text(this.config.backlinkText)
                .attr("href", "#")
                .addClass(this.config.backlinkClass)
                .on("click", function () {
                    // make second <ul> parent active
                    that.makeActive($(this).parents("ul").eq(1));
                    return false;
                });
        },
        /**
         * Activate a <ul>-layer
         *
         * @param ul
         */
        makeActive: function (ul) {
            // remove all active classes from any children
            ul.find("li." + this.config.menuActiveClass).removeClass(this.config.menuActiveClass);

            // make parent <ul>s active with child
            ul.parents("li").addClass(this.config.menuActiveClass);
        },
        getAjaxUrl: function() {
            // check for <base/> tag
            var baseUrl = $('head base').attr('href');
            var url = "";
            if(baseUrl) {
                url = baseUrl;
            }

            url += "startseite.html?type=10";

            return url;
        }
    };

    // make available in global context
    window.OffcanvasMenu = OffcanvasMenu;

    // bind to jQuery

    $.fn.extend({
        offCanvasMenu: function (options) {
            var instance = this.data(OffcanvasMenu.prototype.defaultConfig.dataName);

            // create a new instance if none is found
            if (!instance) {
                instance = new OffcanvasMenu(this, options || {});
                this.data(OffcanvasMenu.prototype.defaultConfig.dataName, instance);
            }

            return instance;
        }
    });
}(jQuery, window));