/*!

* Datepicker for Bootstrap v1.5.0-dev (https://github.com/eternicode/bootstrap-datepicker)
*
* Copyright 2012 Stefan Petre
* Improvements by Andrew Rowls
* Licensed under the Apache License v2.0 (http://www.apache.org/licenses/LICENSE-2.0)
*/(function($, undefined){

       function UTCDate(){
               return new Date(Date.UTC.apply(Date, arguments));
       }
       function UTCToday(){
               var today = new Date();
               return UTCDate(today.getFullYear(), today.getMonth(), today.getDate());
       }
       function isUTCEquals(date1, date2) {
               return (
                       date1.getUTCFullYear() === date2.getUTCFullYear() &&
                       date1.getUTCMonth() === date2.getUTCMonth() &&
                       date1.getUTCDate() === date2.getUTCDate()
               );
       }
       function alias(method){
               return function(){
                       return this[method].apply(this, arguments);
               };
       }

       var DateArray = (function(){
               var extras = {
                       get: function(i){
                               return this.slice(i)[0];
                       },
                       contains: function(d){
                               // Array.indexOf is not cross-browser;
                               // $.inArray doesn't work with Dates
                               var val = d && d.valueOf();
                               for (var i=0, l=this.length; i < l; i++)
                                       if (this[i].valueOf() === val)
                                               return i;
                               return -1;
                       },
                       remove: function(i){
                               this.splice(i,1);
                       },
                       replace: function(new_array){
                               if (!new_array)
                                       return;
                               if (!$.isArray(new_array))
                                       new_array = [new_array];
                               this.clear();
                               this.push.apply(this, new_array);
                       },
                       clear: function(){
                               this.length = 0;
                       },
                       copy: function(){
                               var a = new DateArray();
                               a.replace(this);
                               return a;
                       }
               };

               return function(){
                       var a = [];
                       a.push.apply(a, arguments);
                       $.extend(a, extras);
                       return a;
               };
       })();

       // Picker object

       var Datepicker = function(element, options){
               this._process_options(options);

               this.dates = new DateArray();
               this.viewDate = this.o.defaultViewDate;
               this.focusDate = null;

               this.element = $(element);
               this.isInline = false;
               this.isInput = this.element.is('input');
               this.component = this.element.hasClass('date') ? this.element.find('.add-on, .input-group-addon, .btn') : false;
               this.hasInput = this.component && this.element.find('input').length;
               if (this.component && this.component.length === 0)
                       this.component = false;

               this.picker = $(DPGlobal.template);
               this._buildEvents();
               this._attachEvents();

               if (this.isInline){
                       this.picker.addClass('datepicker-inline').appendTo(this.element);
               }
               else {
                       this.picker.addClass('datepicker-dropdown dropdown-menu');
               }

               if (this.o.rtl){
                       this.picker.addClass('datepicker-rtl');
               }

               this.viewMode = this.o.startView;

               if (this.o.calendarWeeks)
                       this.picker.find('tfoot .today, tfoot .clear')
                                               .attr('colspan', function(i, val){
                                                       return parseInt(val) + 1;
                                               });

               this._allow_update = false;

               this.setStartDate(this._o.startDate);
               this.setEndDate(this._o.endDate);
               this.setDaysOfWeekDisabled(this.o.daysOfWeekDisabled);
               this.setDatesDisabled(this.o.datesDisabled);

               this.fillDow();
               this.fillMonths();

               this._allow_update = true;

               this.update();
               this.showMode();

               if (this.isInline){
                       this.show();
               }
       };

       Datepicker.prototype = {
               constructor: Datepicker,

               _process_options: function(opts){
                       // Store raw options for reference
                       this._o = $.extend({}, this._o, opts);
                       // Processed options
                       var o = this.o = $.extend({}, this._o);

                       // Check if "de-DE" style date is available, if not language should
                       // fallback to 2 letter code eg "de"
                       var lang = o.language;
                       if (!dates[lang]){
                               lang = lang.split('-')[0];
                               if (!dates[lang])
                                       lang = defaults.language;
                       }
                       o.language = lang;

                       switch (o.startView){
                               case 2:
                               case 'decade':
                                       o.startView = 2;
                                       break;
                               case 1:
                               case 'year':
                                       o.startView = 1;
                                       break;
                               default:
                                       o.startView = 0;
                       }

                       switch (o.minViewMode){
                               case 1:
                               case 'months':
                                       o.minViewMode = 1;
                                       break;
                               case 2:
                               case 'years':
                                       o.minViewMode = 2;
                                       break;
                               default:
                                       o.minViewMode = 0;
                       }

                       o.startView = Math.max(o.startView, o.minViewMode);

                       // true, false, or Number > 0
                       if (o.multidate !== true){
                               o.multidate = Number(o.multidate) || false;
                               if (o.multidate !== false)
                                       o.multidate = Math.max(0, o.multidate);
                       }
                       o.multidateSeparator = String(o.multidateSeparator);

                       o.weekStart %= 7;
                       o.weekEnd = ((o.weekStart + 6) % 7);

                       var format = DPGlobal.parseFormat(o.format);
                       if (o.startDate !== -Infinity){
                               if (!!o.startDate){
                                       if (o.startDate instanceof Date)
                                               o.startDate = this._local_to_utc(this._zero_time(o.startDate));
                                       else
                                               o.startDate = DPGlobal.parseDate(o.startDate, format, o.language);
                               }
                               else {
                                       o.startDate = -Infinity;
                               }
                       }
                       if (o.endDate !== Infinity){
                               if (!!o.endDate){
                                       if (o.endDate instanceof Date)
                                               o.endDate = this._local_to_utc(this._zero_time(o.endDate));
                                       else
                                               o.endDate = DPGlobal.parseDate(o.endDate, format, o.language);
                               }
                               else {
                                       o.endDate = Infinity;
                               }
                       }

                       o.daysOfWeekDisabled = o.daysOfWeekDisabled||[];
                       if (!$.isArray(o.daysOfWeekDisabled))
                               o.daysOfWeekDisabled = o.daysOfWeekDisabled.split(/[,\s]*/);
                       o.daysOfWeekDisabled = $.map(o.daysOfWeekDisabled, function(d){
                               return parseInt(d, 10);
                       });

                       o.datesDisabled = o.datesDisabled||[];
                       if (!$.isArray(o.datesDisabled)) {
                               var datesDisabled = [];
                               datesDisabled.push(DPGlobal.parseDate(o.datesDisabled, format, o.language));
                               o.datesDisabled = datesDisabled;
                       }
                       o.datesDisabled = $.map(o.datesDisabled,function(d){
                               return DPGlobal.parseDate(d, format, o.language);
                       });

                       var plc = String(o.orientation).toLowerCase().split(/\s+/g),
                               _plc = o.orientation.toLowerCase();
                       plc = $.grep(plc, function(word){
                               return /^auto|left|right|top|bottom$/.test(word);
                       });
                       o.orientation = {x: 'auto', y: 'auto'};
                       if (!_plc || _plc === 'auto')
                               ; // no action
                       else if (plc.length === 1){
                               switch (plc[0]){
                                       case 'top':
                                       case 'bottom':
                                               o.orientation.y = plc[0];
                                               break;
                                       case 'left':
                                       case 'right':
                                               o.orientation.x = plc[0];
                                               break;
                               }
                       }
                       else {
                               _plc = $.grep(plc, function(word){
                                       return /^left|right$/.test(word);
                               });
                               o.orientation.x = _plc[0] || 'auto';

                               _plc = $.grep(plc, function(word){
                                       return /^top|bottom$/.test(word);
                               });
                               o.orientation.y = _plc[0] || 'auto';
                       }
                       if (o.defaultViewDate) {
                               var year = o.defaultViewDate.year || new Date().getFullYear();
                               var month = o.defaultViewDate.month || 0;
                               var day = o.defaultViewDate.day || 1;
                               o.defaultViewDate = UTCDate(year, month, day);
                       } else {
                               o.defaultViewDate = UTCToday();
                       }
                       o.showOnFocus = o.showOnFocus !== undefined ? o.showOnFocus : true;
               },
               _events: [],
               _secondaryEvents: [],
               _applyEvents: function(evs){
                       for (var i=0, el, ch, ev; i < evs.length; i++){
                               el = evs[i][0];
                               if (evs[i].length === 2){
                                       ch = undefined;
                                       ev = evs[i][1];
                               }
                               else if (evs[i].length === 3){
                                       ch = evs[i][1];
                                       ev = evs[i][2];
                               }
                               el.on(ev, ch);
                       }
               },
               _unapplyEvents: function(evs){
                       for (var i=0, el, ev, ch; i < evs.length; i++){
                               el = evs[i][0];
                               if (evs[i].length === 2){
                                       ch = undefined;
                                       ev = evs[i][1];
                               }
                               else if (evs[i].length === 3){
                                       ch = evs[i][1];
                                       ev = evs[i][2];
                               }
                               el.off(ev, ch);
                       }
               },
               _buildEvents: function(){
           var events = {
               keyup: $.proxy(function(e){
                   if ($.inArray(e.keyCode, [27, 37, 39, 38, 40, 32, 13, 9]) === -1)
                       this.update();
               }, this),
               keydown: $.proxy(this.keydown, this),
               paste: $.proxy(this.paste, this)
           };

           if (this.o.showOnFocus === true) {
               events.focus = $.proxy(this.show, this);
           }

           if (this.isInput) { // single input
               this._events = [
                   [this.element, events]
               ];
           }
           else if (this.component && this.hasInput) { // component: input + button
               this._events = [
                   // For components that are not readonly, allow keyboard nav
                   [this.element.find('input'), events],
                   [this.component, {
                       click: $.proxy(this.show, this)
                   }]
               ];
           }
                       else if (this.element.is('div')){  // inline datepicker
                               this.isInline = true;
                       }
                       else {
                               this._events = [
                                       [this.element, {
                                               click: $.proxy(this.show, this)
                                       }]
                               ];
                       }
                       this._events.push(
                               // Component: listen for blur on element descendants
                               [this.element, '*', {
                                       blur: $.proxy(function(e){
                                               this._focused_from = e.target;
                                       }, this)
                               }],
                               // Input: listen for blur on element
                               [this.element, {
                                       blur: $.proxy(function(e){
                                               this._focused_from = e.target;
                                       }, this)
                               }]
                       );

                       if (this.o.immediateUpdates) {
                               // Trigger input updates immediately on changed year/month
                               this._events.push([this.element, {
                                       'changeYear changeMonth': $.proxy(function(e){
                                               this.update(e.date);
                                       }, this)
                               }]);
                       }

                       this._secondaryEvents = [
                               [this.picker, {
                                       click: $.proxy(this.click, this)
                               }],
                               [$(window), {
                                       resize: $.proxy(this.place, this)
                               }],
                               [$(document), {
                                       mousedown: $.proxy(function(e){
                                               // Clicked outside the datepicker, hide it
                                               if (!(
                                                       this.element.is(e.target) ||
                                                       this.element.find(e.target).length ||
                                                       this.picker.is(e.target) ||
                                                       this.picker.find(e.target).length
                                               )){
                                                       $(this.picker).hide();
                                               }
                                       }, this)
                               }]
                       ];
               },
               _attachEvents: function(){
                       this._detachEvents();
                       this._applyEvents(this._events);
               },
               _detachEvents: function(){
                       this._unapplyEvents(this._events);
               },
               _attachSecondaryEvents: function(){
                       this._detachSecondaryEvents();
                       this._applyEvents(this._secondaryEvents);
               },
               _detachSecondaryEvents: function(){
                       this._unapplyEvents(this._secondaryEvents);
               },
               _trigger: function(event, altdate){
                       var date = altdate || this.dates.get(-1),
                               local_date = this._utc_to_local(date);

                       this.element.trigger({
                               type: event,
                               date: local_date,
                               dates: $.map(this.dates, this._utc_to_local),
                               format: $.proxy(function(ix, format){
                                       if (arguments.length === 0){
                                               ix = this.dates.length - 1;
                                               format = this.o.format;
                                       }
                                       else if (typeof ix === 'string'){
                                               format = ix;
                                               ix = this.dates.length - 1;
                                       }
                                       format = format || this.o.format;
                                       var date = this.dates.get(ix);
                                       return DPGlobal.formatDate(date, format, this.o.language);
                               }, this)
                       });
               },

               show: function(){
                       if (this.element.attr('readonly') && this.o.enableOnReadonly === false)
                               return;
                       if (!this.isInline)
                               this.picker.appendTo(this.o.container);
                       this.place();
                       this.picker.show();
                       this._attachSecondaryEvents();
                       this._trigger('show');
                       if ((window.navigator.msMaxTouchPoints || 'ontouchstart' in document) && this.o.disableTouchKeyboard) {
                               $(this.element).blur();
                       }
                       return this;
               },

               hide: function(){
                       if (this.isInline)
                               return this;
                       if (!this.picker.is(':visible'))
                               return this;
                       this.focusDate = null;
                       this.picker.hide().detach();
                       this._detachSecondaryEvents();
                       this.viewMode = this.o.startView;
                       this.showMode();

                       if (
                               this.o.forceParse &&
                               (
                                       this.isInput && this.element.val() ||
                                       this.hasInput && this.element.find('input').val()
                               )
                       )
                               this.setValue();
                       this._trigger('hide');
                       return this;
               },

               remove: function(){
                       this.hide();
                       this._detachEvents();
                       this._detachSecondaryEvents();
                       this.picker.remove();
                       delete this.element.data().datepicker;
                       if (!this.isInput){
                               delete this.element.data().date;
                       }
                       return this;
               },

               paste: function(evt){
                       var dateString;
                       if (evt.originalEvent.clipboardData && evt.originalEvent.clipboardData.types
                               && $.inArray('text/plain', evt.originalEvent.clipboardData.types) !== -1) {
                               dateString = evt.originalEvent.clipboardData.getData('text/plain');
                       }
                       else if (window.clipboardData) {
                               dateString = window.clipboardData.getData('Text');
                       }
                       else {
                               return;
                       }
                       this.setDate(dateString);
                       this.update();
                       evt.preventDefault();
               },

               _utc_to_local: function(utc){
                       return utc && new Date(utc.getTime() + (utc.getTimezoneOffset()*60000));
               },
               _local_to_utc: function(local){
                       return local && new Date(local.getTime() - (local.getTimezoneOffset()*60000));
               },
               _zero_time: function(local){
                       return local && new Date(local.getFullYear(), local.getMonth(), local.getDate());
               },
               _zero_utc_time: function(utc){
                       return utc && new Date(Date.UTC(utc.getUTCFullYear(), utc.getUTCMonth(), utc.getUTCDate()));
               },

               getDates: function(){
                       return $.map(this.dates, this._utc_to_local);
               },

               getUTCDates: function(){
                       return $.map(this.dates, function(d){
                               return new Date(d);
                       });
               },

               getDate: function(){
                       return this._utc_to_local(this.getUTCDate());
               },

               getUTCDate: function(){
                       var selected_date = this.dates.get(-1);
                       if (typeof selected_date !== 'undefined') {
                               return new Date(selected_date);
                       } else {
                               return null;
                       }
               },

               clearDates: function(){
                       var element;
                       if (this.isInput) {
                               element = this.element;
                       } else if (this.component) {
                               element = this.element.find('input');
                       }

                       if (element) {
                               element.val('').change();
                       }

                       this.update();
                       this._trigger('changeDate');

                       if (this.o.autoclose) {
                               this.hide();
                       }
               },
               setDates: function(){
                       var args = $.isArray(arguments[0]) ? arguments[0] : arguments;
                       this.update.apply(this, args);
                       this._trigger('changeDate');
                       this.setValue();
                       return this;
               },

               setUTCDates: function(){
                       var args = $.isArray(arguments[0]) ? arguments[0] : arguments;
                       this.update.apply(this, $.map(args, this._utc_to_local));
                       this._trigger('changeDate');
                       this.setValue();
                       return this;
               },

               setDate: alias('setDates'),
               setUTCDate: alias('setUTCDates'),

               setValue: function(){
                       var formatted = this.getFormattedDate();
                       if (!this.isInput){
                               if (this.component){
                                       this.element.find('input').val(formatted).change();
                               }
                       }
                       else {
                               this.element.val(formatted).change();
                       }
                       return this;
               },

               getFormattedDate: function(format){
                       if (format === undefined)
                               format = this.o.format;

                       var lang = this.o.language;
                       return $.map(this.dates, function(d){
                               return DPGlobal.formatDate(d, format, lang);
                       }).join(this.o.multidateSeparator);
               },

               setStartDate: function(startDate){
                       this._process_options({startDate: startDate});
                       this.update();
                       this.updateNavArrows();
                       return this;
               },

               setEndDate: function(endDate){
                       this._process_options({endDate: endDate});
                       this.update();
                       this.updateNavArrows();
                       return this;
               },

               setDaysOfWeekDisabled: function(daysOfWeekDisabled){
                       this._process_options({daysOfWeekDisabled: daysOfWeekDisabled});
                       this.update();
                       this.updateNavArrows();
                       return this;
               },

               setDatesDisabled: function(datesDisabled){
                       this._process_options({datesDisabled: datesDisabled});
                       this.update();
                       this.updateNavArrows();
               },

               place: function(){
                       if (this.isInline)
                               return this;
                       var calendarWidth = this.picker.outerWidth(),
                               calendarHeight = this.picker.outerHeight(),
                               visualPadding = 10,
                               windowWidth = $(this.o.container).width(),
                               windowHeight = $(this.o.container).height(),
                               scrollTop = $(this.o.container).scrollTop(),
                               appendOffset = $(this.o.container).offset();

                       var parentsZindex = [];
                       this.element.parents().each(function(){
                               var itemZIndex = $(this).css('z-index');
                               if (itemZIndex !== 'auto' && itemZIndex !== 0) parentsZindex.push(parseInt(itemZIndex));
                       });
                       var zIndex = Math.max.apply(Math, parentsZindex) + 10;
                       var offset = this.component ? this.component.parent().offset() : this.element.offset();
                       var height = this.component ? this.component.outerHeight(true) : this.element.outerHeight(false);
                       var width = this.component ? this.component.outerWidth(true) : this.element.outerWidth(false);
                       var left = offset.left - appendOffset.left,
                               top = offset.top - appendOffset.top;

                       this.picker.removeClass(
                               'datepicker-orient-top datepicker-orient-bottom '+
                               'datepicker-orient-right datepicker-orient-left'
                       );

                       if (this.o.orientation.x !== 'auto'){
                               this.picker.addClass('datepicker-orient-' + this.o.orientation.x);
                               if (this.o.orientation.x === 'right')
                                       left -= calendarWidth - width;
                       }
                       // auto x orientation is best-placement: if it crosses a window
                       // edge, fudge it sideways
                       else {
                               if (offset.left < 0) {
                                       // component is outside the window on the left side. Move it into visible range
                                       this.picker.addClass('datepicker-orient-left');
                                       left -= offset.left - visualPadding;
                               } else if (left + calendarWidth > windowWidth) {
                                       // the calendar passes the widow right edge. Align it to component right side
                                       this.picker.addClass('datepicker-orient-right');
                                       left = offset.left + width - calendarWidth;
                               } else {
                                       // Default to left
                                       this.picker.addClass('datepicker-orient-left');
                               }
                       }

                       // auto y orientation is best-situation: top or bottom, no fudging,
                       // decision based on which shows more of the calendar
                       var yorient = this.o.orientation.y,
                               top_overflow, bottom_overflow;
                       if (yorient === 'auto'){
                               top_overflow = -scrollTop + top - calendarHeight;
                               bottom_overflow = scrollTop + windowHeight - (top + height + calendarHeight);
                               if (Math.max(top_overflow, bottom_overflow) === bottom_overflow)
                                       yorient = 'top';
                               else
                                       yorient = 'bottom';
                       }
                       this.picker.addClass('datepicker-orient-' + yorient);
                       if (yorient === 'top')
                               top += height;
                       else
                               top -= calendarHeight + parseInt(this.picker.css('padding-top'));

                       if (this.o.rtl) {
                               var right = windowWidth - (left + width);
                               this.picker.css({
                                       top: top,
                                       right: right,
                                       zIndex: zIndex
                               });
                       } else {
                               this.picker.css({
                                       top: top,
                                       left: left,
                                       zIndex: zIndex
                               });
                       }
                       return this;
               },

               _allow_update: true,
               update: function(){
                       if (!this._allow_update)
                               return this;

                       var oldDates = this.dates.copy(),
                               dates = [],
                               fromArgs = false;
                       if (arguments.length){
                               $.each(arguments, $.proxy(function(i, date){
                                       if (date instanceof Date)
                                               date = this._local_to_utc(date);
                                       dates.push(date);
                               }, this));
                               fromArgs = true;
                       }
                       else {
                               dates = this.isInput
                                               ? this.element.val()
                                               : this.element.data('date') || this.element.find('input').val();
                               if (dates && this.o.multidate)
                                       dates = dates.split(this.o.multidateSeparator);
                               else
                                       dates = [dates];
                               delete this.element.data().date;
                       }

                       dates = $.map(dates, $.proxy(function(date){
                               return DPGlobal.parseDate(date, this.o.format, this.o.language);
                       }, this));
                       dates = $.grep(dates, $.proxy(function(date){
                               return (
                                       date < this.o.startDate ||
                                       date > this.o.endDate ||
                                       !date
                               );
                       }, this), true);
                       this.dates.replace(dates);

                       if (this.dates.length)
                               this.viewDate = new Date(this.dates.get(-1));
                       else if (this.viewDate < this.o.startDate)
                               this.viewDate = new Date(this.o.startDate);
                       else if (this.viewDate > this.o.endDate)
                               this.viewDate = new Date(this.o.endDate);

                       if (fromArgs){
                               // setting date by clicking
                               this.setValue();
                       }
                       else if (dates.length){
                               // setting date by typing
                               if (String(oldDates) !== String(this.dates))
                                       this._trigger('changeDate');
                       }
                       if (!this.dates.length && oldDates.length)
                               this._trigger('clearDate');

                       this.fill();
                       return this;
               },

               fillDow: function(){
                       var dowCnt = this.o.weekStart,
                               html = '<tr>';
                       if (this.o.calendarWeeks){
                               this.picker.find('.datepicker-days thead tr:first-child .datepicker-switch')
                                       .attr('colspan', function(i, val){
                                               return parseInt(val) + 1;
                                       });
                               var cell = '<th class="cw">&#160;</th>';
                               html += cell;
                       }
                       while (dowCnt < this.o.weekStart + 7){
                               html += '<th class="dow">'+dates[this.o.language].daysMin[(dowCnt++)%7]+'</th>';
                       }
                       html += '</tr>';
                       this.picker.find('.datepicker-days thead').append(html);
               },

               fillMonths: function(){
                       var html = '',
                       i = 0;
                       while (i < 12){
                               html += '<span class="month">'+dates[this.o.language].monthsShort[i++]+'</span>';
                       }
                       this.picker.find('.datepicker-months td').html(html);
               },

               setRange: function(range){
                       if (!range || !range.length)
                               delete this.range;
                       else
                               this.range = $.map(range, function(d){
                                       return d.valueOf();
                               });
                       this.fill();
               },

               getClassNames: function(date){
                       var cls = [],
                               year = this.viewDate.getUTCFullYear(),
                               month = this.viewDate.getUTCMonth(),
                               today = new Date();
                       if (date.getUTCFullYear() < year || (date.getUTCFullYear() === year && date.getUTCMonth() < month)){
                               cls.push('old');
                       }
                       else if (date.getUTCFullYear() > year || (date.getUTCFullYear() === year && date.getUTCMonth() > month)){
                               cls.push('new');
                       }
                       if (this.focusDate && date.valueOf() === this.focusDate.valueOf())
                               cls.push('focused');
                       // Compare internal UTC date with local today, not UTC today
                       if (this.o.todayHighlight &&
                               date.getUTCFullYear() === today.getFullYear() &&
                               date.getUTCMonth() === today.getMonth() &&
                               date.getUTCDate() === today.getDate()){
                               cls.push('today');
                       }
                       if (this.dates.contains(date) !== -1)
                               cls.push('active');
                       if (date.valueOf() < this.o.startDate || date.valueOf() > this.o.endDate ||
                               $.inArray(date.getUTCDay(), this.o.daysOfWeekDisabled) !== -1){
                               cls.push('disabled');
                       }
                       if (this.o.datesDisabled.length > 0 &&
                               $.grep(this.o.datesDisabled, function(d){
                                       return isUTCEquals(date, d); }).length > 0) {
                               cls.push('disabled', 'disabled-date');
                       }

                       if (this.range){
                               if (date > this.range[0] && date < this.range[this.range.length-1]){
                                       cls.push('range');
                               }
                               if ($.inArray(date.valueOf(), this.range) !== -1){
                                       cls.push('selected');
                               }
                       }
                       return cls;
               },

               fill: function(){
                       var d = new Date(this.viewDate),
                               year = d.getUTCFullYear(),
                               month = d.getUTCMonth(),
                               startYear = this.o.startDate !== -Infinity ? this.o.startDate.getUTCFullYear() : -Infinity,
                               startMonth = this.o.startDate !== -Infinity ? this.o.startDate.getUTCMonth() : -Infinity,
                               endYear = this.o.endDate !== Infinity ? this.o.endDate.getUTCFullYear() : Infinity,
                               endMonth = this.o.endDate !== Infinity ? this.o.endDate.getUTCMonth() : Infinity,
                               todaytxt = dates[this.o.language].today || dates['en'].today || '',
                               cleartxt = dates[this.o.language].clear || dates['en'].clear || '',
                               tooltip;
                       if (isNaN(year) || isNaN(month))
                               return;
                       this.picker.find('.datepicker-days thead .datepicker-switch')
                                               .text(dates[this.o.language].months[month]+' '+year);
                       this.picker.find('tfoot .today')
                                               .text(todaytxt)
                                               .toggle(this.o.todayBtn !== false);
                       this.picker.find('tfoot .clear')
                                               .text(cleartxt)
                                               .toggle(this.o.clearBtn !== false);
                       this.updateNavArrows();
                       this.fillMonths();
                       var prevMonth = UTCDate(year, month-1, 28),
                               day = DPGlobal.getDaysInMonth(prevMonth.getUTCFullYear(), prevMonth.getUTCMonth());
                       prevMonth.setUTCDate(day);
                       prevMonth.setUTCDate(day - (prevMonth.getUTCDay() - this.o.weekStart + 7)%7);
                       var nextMonth = new Date(prevMonth);
                       nextMonth.setUTCDate(nextMonth.getUTCDate() + 42);
                       nextMonth = nextMonth.valueOf();
                       var html = [];
                       var clsName;
                       while (prevMonth.valueOf() < nextMonth){
                               if (prevMonth.getUTCDay() === this.o.weekStart){
                                       html.push('<tr>');
                                       if (this.o.calendarWeeks){
                                               // ISO 8601: First week contains first thursday.
                                               // ISO also states week starts on Monday, but we can be more abstract here.
                                               var
                                                       // Start of current week: based on weekstart/current date
                                                       ws = new Date(+prevMonth + (this.o.weekStart - prevMonth.getUTCDay() - 7) % 7 * 864e5),
                                                       // Thursday of this week
                                                       th = new Date(Number(ws) + (7 + 4 - ws.getUTCDay()) % 7 * 864e5),
                                                       // First Thursday of year, year from thursday
                                                       yth = new Date(Number(yth = UTCDate(th.getUTCFullYear(), 0, 1)) + (7 + 4 - yth.getUTCDay())%7*864e5),
                                                       // Calendar week: ms between thursdays, div ms per day, div 7 days
                                                       calWeek =  (th - yth) / 864e5 / 7 + 1;
                                               html.push('<td class="cw">'+ calWeek +'</td>');

                                       }
                               }
                               clsName = this.getClassNames(prevMonth);
                               clsName.push('day');

                               if (this.o.beforeShowDay !== $.noop){
                                       var before = this.o.beforeShowDay(this._utc_to_local(prevMonth));
                                       if (before === undefined)
                                               before = {};
                                       else if (typeof(before) === 'boolean')
                                               before = {enabled: before};
                                       else if (typeof(before) === 'string')
                                               before = {classes: before};
                                       if (before.enabled === false)
                                               clsName.push('disabled');
                                       if (before.classes)
                                               clsName = clsName.concat(before.classes.split(/\s+/));
                                       if (before.tooltip)
                                               tooltip = before.tooltip;
                               }

                               clsName = $.unique(clsName);
                               html.push('<td class="'+clsName.join(' ')+'"' + (tooltip ? ' title="'+tooltip+'"' : '') + '>'+prevMonth.getUTCDate() + '</td>');
                               tooltip = null;
                               if (prevMonth.getUTCDay() === this.o.weekEnd){
                                       html.push('</tr>');
                               }
                               prevMonth.setUTCDate(prevMonth.getUTCDate()+1);
                       }
                       this.picker.find('.datepicker-days tbody').empty().append(html.join(''));

                       var months = this.picker.find('.datepicker-months')
                                               .find('th:eq(1)')
                                                       .text(year)
                                                       .end()
                                               .find('span').removeClass('active');

                       $.each(this.dates, function(i, d){
                               if (d.getUTCFullYear() === year)
                                       months.eq(d.getUTCMonth()).addClass('active');
                       });

                       if (year < startYear || year > endYear){
                               months.addClass('disabled');
                       }
                       if (year === startYear){
                               months.slice(0, startMonth).addClass('disabled');
                       }
                       if (year === endYear){
                               months.slice(endMonth+1).addClass('disabled');
                       }

                       if (this.o.beforeShowMonth !== $.noop){
                               var that = this;
                               $.each(months, function(i, month){
                                       if (!$(month).hasClass('disabled')) {
                                               var moDate = new Date(year, i, 1);
                                               var before = that.o.beforeShowMonth(moDate);
                                               if (before === false)
                                                       $(month).addClass('disabled');
                                       }
                               });
                       }

                       html = '';
                       year = parseInt(year/10, 10) * 10;
                       var yearCont = this.picker.find('.datepicker-years')
                                                               .find('th:eq(1)')
                                                                       .text(year + '-' + (year + 9))
                                                                       .end()
                                                               .find('td');
                       year -= 1;
                       var years = $.map(this.dates, function(d){
                                       return d.getUTCFullYear();
                               }),
                               classes;
                       for (var i = -1; i < 11; i++){
                               classes = ['year'];
                               if (i === -1)
                                       classes.push('old');
                               else if (i === 10)
                                       classes.push('new');
                               if ($.inArray(year, years) !== -1)
                                       classes.push('active');
                               if (year < startYear || year > endYear)
                                       classes.push('disabled');
                               html += '<span class="' + classes.join(' ') + '">' + year + '</span>';
                               year += 1;
                       }
                       yearCont.html(html);
               },

               updateNavArrows: function(){
                       if (!this._allow_update)
                               return;

                       var d = new Date(this.viewDate),
                               year = d.getUTCFullYear(),
                               month = d.getUTCMonth();
                       switch (this.viewMode){
                               case 0:
                                       if (this.o.startDate !== -Infinity && year <= this.o.startDate.getUTCFullYear() && month <= this.o.startDate.getUTCMonth()){
                                               this.picker.find('.prev').css({visibility: 'hidden'});
                                       }
                                       else {
                                               this.picker.find('.prev').css({visibility: 'visible'});
                                       }
                                       if (this.o.endDate !== Infinity && year >= this.o.endDate.getUTCFullYear() && month >= this.o.endDate.getUTCMonth()){
                                               this.picker.find('.next').css({visibility: 'hidden'});
                                       }
                                       else {
                                               this.picker.find('.next').css({visibility: 'visible'});
                                       }
                                       break;
                               case 1:
                               case 2:
                                       if (this.o.startDate !== -Infinity && year <= this.o.startDate.getUTCFullYear()){
                                               this.picker.find('.prev').css({visibility: 'hidden'});
                                       }
                                       else {
                                               this.picker.find('.prev').css({visibility: 'visible'});
                                       }
                                       if (this.o.endDate !== Infinity && year >= this.o.endDate.getUTCFullYear()){
                                               this.picker.find('.next').css({visibility: 'hidden'});
                                       }
                                       else {
                                               this.picker.find('.next').css({visibility: 'visible'});
                                       }
                                       break;
                       }
               },

               click: function(e){
                       e.preventDefault();
                       var target = $(e.target).closest('span, td, th'),
                               year, month, day;
                       if (target.length === 1){
                               switch (target[0].nodeName.toLowerCase()){
                                       case 'th':
                                               switch (target[0].className){
                                                       case 'datepicker-switch':
                                                               this.showMode(1);
                                                               break;
                                                       case 'prev':
                                                       case 'next':
                                                               var dir = DPGlobal.modes[this.viewMode].navStep * (target[0].className === 'prev' ? -1 : 1);
                                                               switch (this.viewMode){
                                                                       case 0:
                                                                               this.viewDate = this.moveMonth(this.viewDate, dir);
                                                                               this._trigger('changeMonth', this.viewDate);
                                                                               break;
                                                                       case 1:
                                                                       case 2:
                                                                               this.viewDate = this.moveYear(this.viewDate, dir);
                                                                               if (this.viewMode === 1)
                                                                                       this._trigger('changeYear', this.viewDate);
                                                                               break;
                                                               }
                                                               this.fill();
                                                               break;
                                                       case 'today':
                                                               var date = new Date();
                                                               date = UTCDate(date.getFullYear(), date.getMonth(), date.getDate(), 0, 0, 0);

                                                               this.showMode(-2);
                                                               var which = this.o.todayBtn === 'linked' ? null : 'view';
                                                               this._setDate(date, which);
                                                               break;
                                                       case 'clear':
                                                               this.clearDates();
                                                               break;
                                               }
                                               break;
                                       case 'span':
                                               if (!target.hasClass('disabled')){
                                                       this.viewDate.setUTCDate(1);
                                                       if (target.hasClass('month')){
                                                               day = 1;
                                                               month = target.parent().find('span').index(target);
                                                               year = this.viewDate.getUTCFullYear();
                                                               this.viewDate.setUTCMonth(month);
                                                               this._trigger('changeMonth', this.viewDate);
                                                               if (this.o.minViewMode === 1){
                                                                       this._setDate(UTCDate(year, month, day));
                                                                       this.showMode();
                                                               } else {
                                                                       this.showMode(-1);
                                                               }
                                                       }
                                                       else {
                                                               day = 1;
                                                               month = 0;
                                                               year = parseInt(target.text(), 10)||0;
                                                               this.viewDate.setUTCFullYear(year);
                                                               this._trigger('changeYear', this.viewDate);
                                                               if (this.o.minViewMode === 2){
                                                                       this._setDate(UTCDate(year, month, day));
                                                               }
                                                               this.showMode(-1);
                                                       }
                                                       this.fill();
                                               }
                                               break;
                                       case 'td':
                                               if (target.hasClass('day') && !target.hasClass('disabled')){
                                                       day = parseInt(target.text(), 10)||1;
                                                       year = this.viewDate.getUTCFullYear();
                                                       month = this.viewDate.getUTCMonth();
                                                       if (target.hasClass('old')){
                                                               if (month === 0){
                                                                       month = 11;
                                                                       year -= 1;
                                                               }
                                                               else {
                                                                       month -= 1;
                                                               }
                                                       }
                                                       else if (target.hasClass('new')){
                                                               if (month === 11){
                                                                       month = 0;
                                                                       year += 1;
                                                               }
                                                               else {
                                                                       month += 1;
                                                               }
                                                       }
                                                       this._setDate(UTCDate(year, month, day));
                                               }
                                               break;
                               }
                       }
                       if (this.picker.is(':visible') && this._focused_from){
                               $(this._focused_from).focus();
                       }
                       delete this._focused_from;
               },

               _toggle_multidate: function(date){
                       var ix = this.dates.contains(date);
                       if (!date){
                               this.dates.clear();
                       }

                       if (ix !== -1){
                               if (this.o.multidate === true || this.o.multidate > 1 || this.o.toggleActive){
                                       this.dates.remove(ix);
                               }
                       } else if (this.o.multidate === false) {
                               this.dates.clear();
                               this.dates.push(date);
                       }
                       else {
                               this.dates.push(date);
                       }

                       if (typeof this.o.multidate === 'number')
                               while (this.dates.length > this.o.multidate)
                                       this.dates.remove(0);
               },

               _setDate: function(date, which){
                       if (!which || which === 'date')
                               this._toggle_multidate(date && new Date(date));
                       if (!which || which  === 'view')
                               this.viewDate = date && new Date(date);

                       this.fill();
                       this.setValue();
                       if (!which || which  !== 'view') {
                               this._trigger('changeDate');
                       }
                       var element;
                       if (this.isInput){
                               element = this.element;
                       }
                       else if (this.component){
                               element = this.element.find('input');
                       }
                       if (element){
                               element.change();
                       }
                       if (this.o.autoclose && (!which || which === 'date')){
                               this.hide();
                       }
               },

               moveMonth: function(date, dir){
                       if (!date)
                               return undefined;
                       if (!dir)
                               return date;
                       var new_date = new Date(date.valueOf()),
                               day = new_date.getUTCDate(),
                               month = new_date.getUTCMonth(),
                               mag = Math.abs(dir),
                               new_month, test;
                       dir = dir > 0 ? 1 : -1;
                       if (mag === 1){
                               test = dir === -1
                                       // If going back one month, make sure month is not current month
                                       // (eg, Mar 31 -> Feb 31 == Feb 28, not Mar 02)
                                       ? function(){
                                               return new_date.getUTCMonth() === month;
                                       }
                                       // If going forward one month, make sure month is as expected
                                       // (eg, Jan 31 -> Feb 31 == Feb 28, not Mar 02)
                                       : function(){
                                               return new_date.getUTCMonth() !== new_month;
                                       };
                               new_month = month + dir;
                               new_date.setUTCMonth(new_month);
                               // Dec -> Jan (12) or Jan -> Dec (-1) -- limit expected date to 0-11
                               if (new_month < 0 || new_month > 11)
                                       new_month = (new_month + 12) % 12;
                       }
                       else {
                               // For magnitudes >1, move one month at a time...
                               for (var i=0; i < mag; i++)
                                       // ...which might decrease the day (eg, Jan 31 to Feb 28, etc)...
                                       new_date = this.moveMonth(new_date, dir);
                               // ...then reset the day, keeping it in the new month
                               new_month = new_date.getUTCMonth();
                               new_date.setUTCDate(day);
                               test = function(){
                                       return new_month !== new_date.getUTCMonth();
                               };
                       }
                       // Common date-resetting loop -- if date is beyond end of month, make it
                       // end of month
                       while (test()){
                               new_date.setUTCDate(--day);
                               new_date.setUTCMonth(new_month);
                       }
                       return new_date;
               },

               moveYear: function(date, dir){
                       return this.moveMonth(date, dir*12);
               },

               dateWithinRange: function(date){
                       return date >= this.o.startDate && date <= this.o.endDate;
               },

               keydown: function(e){
                       if (!this.picker.is(':visible')){
                               if (e.keyCode === 40 || e.keyCode === 27) // allow down to re-show picker
                                       this.show();
                               return;
                       }
                       var dateChanged = false,
                               dir, newDate, newViewDate,
                               focusDate = this.focusDate || this.viewDate;
                       switch (e.keyCode){
                               case 27: // escape
                                       if (this.focusDate){
                                               this.focusDate = null;
                                               this.viewDate = this.dates.get(-1) || this.viewDate;
                                               this.fill();
                                       }
                                       else
                                               this.hide();
                                       e.preventDefault();
                                       break;
                               case 37: // left
                               case 39: // right
                                       if (!this.o.keyboardNavigation)
                                               break;
                                       dir = e.keyCode === 37 ? -1 : 1;
                                       if (e.ctrlKey){
                                               newDate = this.moveYear(this.dates.get(-1) || UTCToday(), dir);
                                               newViewDate = this.moveYear(focusDate, dir);
                                               this._trigger('changeYear', this.viewDate);
                                       }
                                       else if (e.shiftKey){
                                               newDate = this.moveMonth(this.dates.get(-1) || UTCToday(), dir);
                                               newViewDate = this.moveMonth(focusDate, dir);
                                               this._trigger('changeMonth', this.viewDate);
                                       }
                                       else {
                                               newDate = new Date(this.dates.get(-1) || UTCToday());
                                               newDate.setUTCDate(newDate.getUTCDate() + dir);
                                               newViewDate = new Date(focusDate);
                                               newViewDate.setUTCDate(focusDate.getUTCDate() + dir);
                                       }
                                       if (this.dateWithinRange(newViewDate)){
                                               this.focusDate = this.viewDate = newViewDate;
                                               this.setValue();
                                               this.fill();
                                               e.preventDefault();
                                       }
                                       break;
                               case 38: // up
                               case 40: // down
                                       if (!this.o.keyboardNavigation)
                                               break;
                                       dir = e.keyCode === 38 ? -1 : 1;
                                       if (e.ctrlKey){
                                               newDate = this.moveYear(this.dates.get(-1) || UTCToday(), dir);
                                               newViewDate = this.moveYear(focusDate, dir);
                                               this._trigger('changeYear', this.viewDate);
                                       }
                                       else if (e.shiftKey){
                                               newDate = this.moveMonth(this.dates.get(-1) || UTCToday(), dir);
                                               newViewDate = this.moveMonth(focusDate, dir);
                                               this._trigger('changeMonth', this.viewDate);
                                       }
                                       else {
                                               newDate = new Date(this.dates.get(-1) || UTCToday());
                                               newDate.setUTCDate(newDate.getUTCDate() + dir * 7);
                                               newViewDate = new Date(focusDate);
                                               newViewDate.setUTCDate(focusDate.getUTCDate() + dir * 7);
                                       }
                                       if (this.dateWithinRange(newViewDate)){
                                               this.focusDate = this.viewDate = newViewDate;
                                               this.setValue();
                                               this.fill();
                                               e.preventDefault();
                                       }
                                       break;
                               case 32: // spacebar
                                       // Spacebar is used in manually typing dates in some formats.
                                       // As such, its behavior should not be hijacked.
                                       break;
                               case 13: // enter
                                       focusDate = this.focusDate || this.dates.get(-1) || this.viewDate;
                                       if (this.o.keyboardNavigation) {
                                               this._toggle_multidate(focusDate);
                                               dateChanged = true;
                                       }
                                       this.focusDate = null;
                                       this.viewDate = this.dates.get(-1) || this.viewDate;
                                       this.setValue();
                                       this.fill();
                                       if (this.picker.is(':visible')){
                                               e.preventDefault();
                                               if (typeof e.stopPropagation === 'function') {
                                                       e.stopPropagation(); // All modern browsers, IE9+
                                               } else {
                                                       e.cancelBubble = true; // IE6,7,8 ignore "stopPropagation"
                                               }
                                               if (this.o.autoclose)
                                                       this.hide();
                                       }
                                       break;
                               case 9: // tab
                                       this.focusDate = null;
                                       this.viewDate = this.dates.get(-1) || this.viewDate;
                                       this.fill();
                                       this.hide();
                                       break;
                       }
                       if (dateChanged){
                               if (this.dates.length)
                                       this._trigger('changeDate');
                               else
                                       this._trigger('clearDate');
                               var element;
                               if (this.isInput){
                                       element = this.element;
                               }
                               else if (this.component){
                                       element = this.element.find('input');
                               }
                               if (element){
                                       element.change();
                               }
                       }
               },

               showMode: function(dir){
                       if (dir){
                               this.viewMode = Math.max(this.o.minViewMode, Math.min(2, this.viewMode + dir));
                       }
                       this.picker
                               .children('div')
                               .hide()
                               .filter('.datepicker-' + DPGlobal.modes[this.viewMode].clsName)
                                       .css('display', 'block');
                       this.updateNavArrows();
               }
       };

       var DateRangePicker = function(element, options){
               this.element = $(element);
               this.inputs = $.map(options.inputs, function(i){
                       return i.jquery ? i[0] : i;
               });
               delete options.inputs;

               datepickerPlugin.call($(this.inputs), options)
                       .on('changeDate', $.proxy(this.dateUpdated, this));

               this.pickers = $.map(this.inputs, function(i){
                       return $(i).data('datepicker');
               });
               this.updateDates();
       };
       DateRangePicker.prototype = {
               updateDates: function(){
                       this.dates = $.map(this.pickers, function(i){
                               return i.getUTCDate();
                       });
                       this.updateRanges();
               },
               updateRanges: function(){
                       var range = $.map(this.dates, function(d){
                               return d.valueOf();
                       });
                       $.each(this.pickers, function(i, p){
                               p.setRange(range);
                       });
               },
               dateUpdated: function(e){
                       // `this.updating` is a workaround for preventing infinite recursion
                       // between `changeDate` triggering and `setUTCDate` calling.  Until
                       // there is a better mechanism.
                       if (this.updating)
                               return;
                       this.updating = true;

                       var dp = $(e.target).data('datepicker'),
                               new_date = dp.getUTCDate(),
                               i = $.inArray(e.target, this.inputs),
                               j = i - 1,
                               k = i + 1,
                               l = this.inputs.length;
                       if (i === -1)
                               return;

                       $.each(this.pickers, function(i, p){
                               if (!p.getUTCDate())
                                       p.setUTCDate(new_date);
                       });

                       if (new_date < this.dates[j]){
                               // Date being moved earlier/left
                               while (j >= 0 && new_date < this.dates[j]){
                                       this.pickers[j--].setUTCDate(new_date);
                               }
                       }
                       else if (new_date > this.dates[k]){
                               // Date being moved later/right
                               while (k < l && new_date > this.dates[k]){
                                       this.pickers[k++].setUTCDate(new_date);
                               }
                       }
                       this.updateDates();

                       delete this.updating;
               },
               remove: function(){
                       $.map(this.pickers, function(p){ p.remove(); });
                       delete this.element.data().datepicker;
               }
       };

       function opts_from_el(el, prefix){
               // Derive options from element data-attrs
               var data = $(el).data(),
                       out = {}, inkey,
                       replace = new RegExp('^' + prefix.toLowerCase() + '([A-Z])');
               prefix = new RegExp('^' + prefix.toLowerCase());
               function re_lower(_,a){
                       return a.toLowerCase();
               }
               for (var key in data)
                       if (prefix.test(key)){
                               inkey = key.replace(replace, re_lower);
                               out[inkey] = data[key];
                       }
               return out;
       }

       function opts_from_locale(lang){
               // Derive options from locale plugins
               var out = {};
               // Check if "de-DE" style date is available, if not language should
               // fallback to 2 letter code eg "de"
               if (!dates[lang]){
                       lang = lang.split('-')[0];
                       if (!dates[lang])
                               return;
               }
               var d = dates[lang];
               $.each(locale_opts, function(i,k){
                       if (k in d)
                               out[k] = d[k];
               });
               return out;
       }

       var old = $.fn.datepicker;
       var datepickerPlugin = function(option){
               var args = Array.apply(null, arguments);
               args.shift();
               var internal_return;
               this.each(function(){
                       var $this = $(this),
                               data = $this.data('datepicker'),
                               options = typeof option === 'object' && option;
                       if (!data){
                               var elopts = opts_from_el(this, 'date'),
                                       // Preliminary otions
                                       xopts = $.extend({}, defaults, elopts, options),
                                       locopts = opts_from_locale(xopts.language),
                                       // Options priority: js args, data-attrs, locales, defaults
                                       opts = $.extend({}, defaults, locopts, elopts, options);
                               if ($this.hasClass('input-daterange') || opts.inputs){
                                       var ropts = {
                                               inputs: opts.inputs || $this.find('input').toArray()
                                       };
                                       $this.data('datepicker', (data = new DateRangePicker(this, $.extend(opts, ropts))));
                               }
                               else {
                                       $this.data('datepicker', (data = new Datepicker(this, opts)));
                               }
                       }
                       if (typeof option === 'string' && typeof data[option] === 'function'){
                               internal_return = data[option].apply(data, args);
                               if (internal_return !== undefined)
                                       return false;
                       }
               });
               if (internal_return !== undefined)
                       return internal_return;
               else
                       return this;
       };
       $.fn.datepicker = datepickerPlugin;

       var defaults = $.fn.datepicker.defaults = {
               autoclose: false,
               beforeShowDay: $.noop,
               beforeShowMonth: $.noop,
               calendarWeeks: false,
               clearBtn: false,
               toggleActive: false,
               daysOfWeekDisabled: [],
               datesDisabled: [],
               endDate: Infinity,
               forceParse: true,
               format: 'mm/dd/yyyy',
               keyboardNavigation: true,
               language: 'en',
               minViewMode: 0,
               multidate: false,
               multidateSeparator: ',',
               orientation: "auto",
               rtl: false,
               startDate: -Infinity,
               startView: 0,
               todayBtn: false,
               todayHighlight: false,
               weekStart: 0,
               disableTouchKeyboard: false,
               enableOnReadonly: true,
               container: 'body',
               immediateUpdates: false
       };
       var locale_opts = $.fn.datepicker.locale_opts = [
               'format',
               'rtl',
               'weekStart'
       ];
       $.fn.datepicker.Constructor = Datepicker;
       var dates = $.fn.datepicker.dates = {
               en: {
                       days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
                       daysShort: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
                       daysMin: ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"],
                       months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
                       monthsShort: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
                       today: "Today",
                       clear: "Clear"
               }
       };

       var DPGlobal = {
               modes: [
                       {
                               clsName: 'days',
                               navFnc: 'Month',
                               navStep: 1
                       },
                       {
                               clsName: 'months',
                               navFnc: 'FullYear',
                               navStep: 1
                       },
                       {
                               clsName: 'years',
                               navFnc: 'FullYear',
                               navStep: 10
               }],
               isLeapYear: function(year){
                       return (((year % 4 === 0) && (year % 100 !== 0)) || (year % 400 === 0));
               },
               getDaysInMonth: function(year, month){
                       return [31, (DPGlobal.isLeapYear(year) ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
               },
               validParts: /dd?|DD?|mm?|MM?|yy(?:yy)?/g,
               nonpunctuation: /[^ -\/:-@\[\u3400-\u9fff-`{-~\t\n\r]+/g,
               parseFormat: function(format){
                       // IE treats \0 as a string end in inputs (truncating the value),
                       // so it's a bad format delimiter, anyway
                       var separators = format.replace(this.validParts, '\0').split('\0'),
                               parts = format.match(this.validParts);
                       if (!separators || !separators.length || !parts || parts.length === 0){
                               throw new Error("Invalid date format.");
                       }
                       return {separators: separators, parts: parts};
               },
               parseDate: function(date, format, language){
                       if (!date)
                               return undefined;
                       if (date instanceof Date)
                               return date;
                       if (typeof format === 'string')
                               format = DPGlobal.parseFormat(format);
                       var part_re = /([\-+]\d+)([dmwy])/,
                               parts = date.match(/([\-+]\d+)([dmwy])/g),
                               part, dir, i;
                       if (/^[\-+]\d+[dmwy]([\s,]+[\-+]\d+[dmwy])*$/.test(date)){
                               date = new Date();
                               for (i=0; i < parts.length; i++){
                                       part = part_re.exec(parts[i]);
                                       dir = parseInt(part[1]);
                                       switch (part[2]){
                                               case 'd':
                                                       date.setUTCDate(date.getUTCDate() + dir);
                                                       break;
                                               case 'm':
                                                       date = Datepicker.prototype.moveMonth.call(Datepicker.prototype, date, dir);
                                                       break;
                                               case 'w':
                                                       date.setUTCDate(date.getUTCDate() + dir * 7);
                                                       break;
                                               case 'y':
                                                       date = Datepicker.prototype.moveYear.call(Datepicker.prototype, date, dir);
                                                       break;
                                       }
                               }
                               return UTCDate(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate(), 0, 0, 0);
                       }
                       parts = date && date.match(this.nonpunctuation) || [];
                       date = new Date();
                       var parsed = {},
                               setters_order = ['yyyy', 'yy', 'M', 'MM', 'm', 'mm', 'd', 'dd'],
                               setters_map = {
                                       yyyy: function(d,v){
                                               return d.setUTCFullYear(v);
                                       },
                                       yy: function(d,v){
                                               return d.setUTCFullYear(2000+v);
                                       },
                                       m: function(d,v){
                                               if (isNaN(d))
                                                       return d;
                                               v -= 1;
                                               while (v < 0) v += 12;
                                               v %= 12;
                                               d.setUTCMonth(v);
                                               while (d.getUTCMonth() !== v)
                                                       d.setUTCDate(d.getUTCDate()-1);
                                               return d;
                                       },
                                       d: function(d,v){
                                               return d.setUTCDate(v);
                                       }
                               },
                               val, filtered;
                       setters_map['M'] = setters_map['MM'] = setters_map['mm'] = setters_map['m'];
                       setters_map['dd'] = setters_map['d'];
                       date = UTCDate(date.getFullYear(), date.getMonth(), date.getDate(), 0, 0, 0);
                       var fparts = format.parts.slice();
                       // Remove noop parts
                       if (parts.length !== fparts.length){
                               fparts = $(fparts).filter(function(i,p){
                                       return $.inArray(p, setters_order) !== -1;
                               }).toArray();
                       }
                       // Process remainder
                       function match_part(){
                               var m = this.slice(0, parts[i].length),
                                       p = parts[i].slice(0, m.length);
                               return m.toLowerCase() === p.toLowerCase();
                       }
                       if (parts.length === fparts.length){
                               var cnt;
                               for (i=0, cnt = fparts.length; i < cnt; i++){
                                       val = parseInt(parts[i], 10);
                                       part = fparts[i];
                                       if (isNaN(val)){
                                               switch (part){
                                                       case 'MM':
                                                               filtered = $(dates[language].months).filter(match_part);
                                                               val = $.inArray(filtered[0], dates[language].months) + 1;
                                                               break;
                                                       case 'M':
                                                               filtered = $(dates[language].monthsShort).filter(match_part);
                                                               val = $.inArray(filtered[0], dates[language].monthsShort) + 1;
                                                               break;
                                               }
                                       }
                                       parsed[part] = val;
                               }
                               var _date, s;
                               for (i=0; i < setters_order.length; i++){
                                       s = setters_order[i];
                                       if (s in parsed && !isNaN(parsed[s])){
                                               _date = new Date(date);
                                               setters_map[s](_date, parsed[s]);
                                               if (!isNaN(_date))
                                                       date = _date;
                                       }
                               }
                       }
                       return date;
               },
               formatDate: function(date, format, language){
                       if (!date)
                               return '';
                       if (typeof format === 'string')
                               format = DPGlobal.parseFormat(format);
                       var val = {
                               d: date.getUTCDate(),
                               D: dates[language].daysShort[date.getUTCDay()],
                               DD: dates[language].days[date.getUTCDay()],
                               m: date.getUTCMonth() + 1,
                               M: dates[language].monthsShort[date.getUTCMonth()],
                               MM: dates[language].months[date.getUTCMonth()],
                               yy: date.getUTCFullYear().toString().substring(2),
                               yyyy: date.getUTCFullYear()
                       };
                       val.dd = (val.d < 10 ? '0' : '') + val.d;
                       val.mm = (val.m < 10 ? '0' : '') + val.m;
                       date = [];
                       var seps = $.extend([], format.separators);
                       for (var i=0, cnt = format.parts.length; i <= cnt; i++){
                               if (seps.length)
                                       date.push(seps.shift());
                               date.push(val[format.parts[i]]);
                       }
                       return date.join('');
               },
               headTemplate: '<thead>'+
                                                       '<tr>'+
                                                               '<th class="prev">&#171;</th>'+
                                                               '<th colspan="5" class="datepicker-switch"></th>'+
                                                               '<th class="next">&#187;</th>'+
                                                       '</tr>'+
                                               '</thead>',
               contTemplate: '<tbody><tr><td colspan="7"></td></tr></tbody>',
               footTemplate: '<tfoot>'+
                                                       '<tr>'+
                                                               '<th colspan="7" class="today"></th>'+
                                                       '</tr>'+
                                                       '<tr>'+
                                                               '<th colspan="7" class="clear"></th>'+
                                                       '</tr>'+
                                               '</tfoot>'
       };
       DPGlobal.template = '<div class="datepicker">'+
                                                       '<div class="datepicker-days">'+
                                                               '<table class=" table-condensed">'+
                                                                       DPGlobal.headTemplate+
                                                                       '<tbody></tbody>'+
                                                                       DPGlobal.footTemplate+
                                                               '</table>'+
                                                       '</div>'+
                                                       '<div class="datepicker-months">'+
                                                               '<table class="table-condensed">'+
                                                                       DPGlobal.headTemplate+
                                                                       DPGlobal.contTemplate+
                                                                       DPGlobal.footTemplate+
                                                               '</table>'+
                                                       '</div>'+
                                                       '<div class="datepicker-years">'+
                                                               '<table class="table-condensed">'+
                                                                       DPGlobal.headTemplate+
                                                                       DPGlobal.contTemplate+
                                                                       DPGlobal.footTemplate+
                                                               '</table>'+
                                                       '</div>'+
                                               '</div>';

       $.fn.datepicker.DPGlobal = DPGlobal;

       /* DATEPICKER NO CONFLICT
       * =================== */

       $.fn.datepicker.noConflict = function(){
               $.fn.datepicker = old;
               return this;
       };

       /* DATEPICKER VERSION
        * =================== */
       $.fn.datepicker.version =  "1.4.1-dev";

       /* DATEPICKER DATA-API
       * ================== */

       $(document).on(
               'focus.datepicker.data-api click.datepicker.data-api',
               '[data-provide="datepicker"]',
               function(e){
                       var $this = $(this);
                       if ($this.data('datepicker'))
                               return;
                       e.preventDefault();
                       // component click requires us to explicitly show it
                       datepickerPlugin.call($this, 'show');
               }
       );
       $(function(){
               datepickerPlugin.call($('[data-provide="datepicker-inline"]'));
       });

}(window.jQuery));