// daterangepicker.js
// version : 0.0.5
// author : Chunlong Liu
// last updated at: 2014-05-27
// license : MIT
// www.jszen.com

(function($)
{

	$.dateRangePickerLanguages =
	{
		'cn':
		{
			'selected': '已选择:',
			'day':'天',
			'days': '天',
			'apply': '确定',
			'week-1' : '一',
			'week-2' : '二',
			'week-3' : '三',
			'week-4' : '四',
			'week-5' : '五',
			'week-6' : '六',
			'week-7' : '日',
			'month-name': ['一月','二月','三月','四月','五月','六月','七月','八月','九月','十月','十一月','十二月'],
			'shortcuts' : '快捷选择',
			'past': '过去',
			'following':'将来',
			'previous' : '&nbsp;&nbsp;&nbsp;',
			'prev-week' : '上周',
			'prev-month' : '上个月',
			'prev-year' : '去年',
			'next': '&nbsp;&nbsp;&nbsp;',
			'next-week':'下周',
			'next-month':'下个月',
			'next-year':'明年',
			'less-than' : '所选日期范围不能大于%d天',
			'more-than' : '所选日期范围不能小于%d天',
			'default-more' : '请选择大于%d天的日期范围',
			'default-less' : '请选择小于%d天的日期范围',
			'default-range' : '请选择%d天到%d天的日期范围',
			'default-single':'请选择一个日期',
			'default-default': '请选择一个日期范围'
		},
		'cz':
		{
			'selected': 'Vybráno:',
			'day':'Den',
			'days': 'Dny',
			'apply': 'Zavřít',
			'week-1' : 'Po',
			'week-2' : 'Út',
			'week-3' : 'St',
			'week-4' : 'Čt',
			'week-5' : 'Pá',
			'week-6' : 'So',
			'week-7' : 'Ne',
			'month-name': ['Leden','Únor','Březen','Duben','Květen','Červen','Červenec','Srpen','Září','Říjen','Listopad','Prosinec'],
			'shortcuts' : 'Zkratky',
			'past': 'po',
			'following':'následující',
			'previous' : 'předchozí',
			'prev-week' : 'týden',
			'prev-month' : 'měsíc',
			'prev-year' : 'rok',
			'next':'další',
			'next-week':'týden',
			'next-month':'měsíc',
			'next-year':'rok',
			'less-than' : 'Rozsah data by neměl být větší než %d dnů',
			'more-than' : 'Rozsah data by neměl být menší než %d dnů',
			'default-more' : 'Prosím zvolte rozsah data větší než %d dnů',
			'default-single' : 'Prosím zvolte datum',
			'default-less' : 'Prosím zvolte rozsah data menší než %d dnů',
			'default-range' : 'Prosím zvolte rozsah data mezi %d a %d dny',
			'default-default': 'Prosím zvolte rozsah data'
		},
		'en':
		{
			'selected': 'Selected:',
			'day':'Day',
			'days': 'Days',
			'apply': 'Apply',
			'week-1' : 'MO',
			'week-2' : 'TU',
			'week-3' : 'WE',
			'week-4' : 'TH',
			'week-5' : 'FR',
			'week-6' : 'SA',
			'week-7' : 'SU',
			'month-name': ['JANUARY','FEBRUARY','MARCH','APRIL','MAY','JUNE','JULY','AUGUST','SEPTEMBER','OCTOBER','NOVEMBER','DECEMBER'],
			'shortcuts' : 'Shortcuts',
			'past': 'Past',
			'following':'Following',
			'previous' : 'Previous',
			'prev-week' : 'Week',
			'prev-month' : 'Month',
			'prev-year' : 'Year',
			'next':'Next',
			'next-week':'Week',
			'next-month':'Month',
			'next-year':'Year',
			'less-than' : 'Date range should not be more than %d days',
			'more-than' : 'Date range should not be less than %d days',
			'default-more' : 'Please select a date range longer than %d days',
			'default-single' : 'Please select a date',
			'default-less' : 'Please select a date range less than %d days',
			'default-range' : 'Please select a date range between %d and %d days',
			'default-default': 'Please select a date range'
		},
		'it':
		{
			'selected': 'Selezionati:',
			'day':'Giorno',
			'days': 'Giorni',
			'apply': 'Chiudi',
			'week-1' : 'LU',
			'week-2' : 'MA',
			'week-3' : 'ME',
			'week-4' : 'GI',
			'week-5' : 'VE',
			'week-6' : 'SA',
			'week-7' : 'DO',
			'month-name': ['GENNAIO','FEBBRAIO','MARZO','APRILE','MAGGIO','GIUGNO','LUGLIO','AGOSTO','SETTEMBRE','OTTOBRE','NOVEMBRE','DICEMBRE'],
			'shortcuts' : 'Scorciatoie',
			'past': 'Scorso',
			'following':'Successivo',
			'previous' : 'Precedente',
			'prev-week' : 'Settimana',
			'prev-month' : 'Mese',
			'prev-year' : 'Anno',
			'next':'Prossimo',
			'next-week':'Settimana',
			'next-month':'Mese',
			'next-year':'Anno',
			'less-than' : 'L\'intervallo non dev\'essere maggiore di %d giorni',
			'more-than' : 'L\'intervallo non dev\'essere minore di %d giorni',
			'default-more' : 'Seleziona un intervallo maggiore di %d giorni',
			'default-single' : 'Seleziona una data',
			'default-less' : 'Seleziona un intervallo minore di %d giorni',
			'default-range' : 'Seleziona un intervallo compreso tra i %d e i %d giorni',
			'default-default': 'Seleziona un intervallo di date'
		},
		'es':
		{
			'selected': 'Seleccionado:',
			'day':'Dia',
			'days': 'Dias',
			'apply': 'Cerrar',
			'week-1' : 'LU',
			'week-2' : 'MA',
			'week-3' : 'MI',
			'week-4' : 'JU',
			'week-5' : 'VI',
			'week-6' : 'SA',
			'week-7' : 'DO',
			'month-name': ['ENERO','FEBRERO','MARZO','ABRIL','MAYO','JUNIO','JULIO','AGOSTO','SEPTIEMBRE','OCTUBRE','NOVIEMBRE','DICIEMBRE'],
			'shortcuts' : 'Accesos directos',
			'past': 'Pasado',
			'following':'Siguiente',
			'previous' : 'Anterior',
			'prev-week' : 'Semana',
			'prev-month' : 'Mes',
			'prev-year' : 'Año',
			'next':'Siguiente',
			'next-week':'Semana',
			'next-month':'Mes',
			'next-year':'Año',
			'less-than' : 'El rango no deberia ser mayor de %d dias',
			'more-than' : 'El rango no deberia ser menor de %d dias',
			'default-more' : 'Por favor selecciona un rango mayor a %d dias',
			'default-single' : 'Por favor selecciona un dia',
			'default-less' : 'Por favor selecciona un rango menor a %d dias',
			'default-range' : 'Por favor selecciona un rango entre %d y %d dias',
			'default-default': 'Por favor selecciona un rango de fechas.'
		},
		'de':
		{
			'selected': 'Auswahl:',
			'day':'Tag',
			'days': 'Tage',
			'apply': 'Schließen',
			'week-1' : 'MO',
			'week-2' : 'DI',
			'week-3' : 'MI',
			'week-4' : 'DO',
			'week-5' : 'FR',
			'week-6' : 'SA',
			'week-7' : 'SO',
			'month-name': ['JANUAR','FEBRUAR','MÄRZ','APRIL','MAI','JUNI','JULI','AUGUST','SEPTEMBER','OKTOBER','NOVEMBER','DEZEMBER'],
			'shortcuts' : 'Schnellwahl',
			'past': 'Vorherige',
			'following':'Folgende',
			'previous' : 'Vorherige',
			'prev-week' : 'Woche',
			'prev-month' : 'Monat',
			'prev-year' : 'Jahr',
			'next':'Nächste',
			'next-week':'Woche',
			'next-month':'Monat',
			'next-year':'Jahr',
			'less-than' : 'Datumsbereich darf nicht größer sein als %d Tage',
			'more-than' : 'Datumsbereich darf nicht kleiner sein als %d Tage',
			'default-more' : 'Bitte mindestens %d Tage auswählen',
			'default-single' : 'Bitte ein Datum auswählen',
			'default-less' : 'Bitte weniger als %d Tage auswählen',
			'default-range' : 'Bitte einen Datumsbereich zwischen %d und %d Tagen auswählen',
			'default-default': 'Bitte ein Start- und Enddatum auswählen'
		},
		'ru':
		{
			'selected': 'Выбрано:',
			'day': 'День',
			'days': 'Дней',
			'apply': 'Закрыть',
			'week-1': 'ПН',
			'week-2': 'ВТ',
			'week-3': 'СР',
			'week-4': 'ЧТ',
			'week-5': 'ПТ',
			'week-6': 'СБ',
			'week-7': 'ВС',
			'month-name': ['ЯНВАРЬ','ФЕВРАЛЬ','МАРТ','АПРЕЛЬ','МАЙ','ИЮНЬ','ИЮЛЬ','АВГУСТ','СЕНТЯБРЬ','ОКТЯБРЬ','НОЯБРЬ','ДЕКАБРЬ'],
			'shortcuts': 'Быстрый выбор',
			'past': 'Прошедшие',
			'following': 'Следующие',
			'previous': '&nbsp;&nbsp;&nbsp;',
			'prev-week': 'Неделя',
			'prev-month': 'Месяц',
			'prev-year': 'Год',
			'next': '&nbsp;&nbsp;&nbsp;',
			'next-week': 'Неделя',
			'next-month': 'Месяц',
			'next-year': 'Год',
			'less-than': 'Диапазон не может быть больше %d дней',
			'more-than': 'Диапазон не может быть меньше %d дней',
			'default-more': 'Пожалуйста выберите диапазон больше %d дней',
			'default-single': 'Пожалуйста выберите дату',
			'default-less': 'Пожалуйста выберите диапазон меньше %d дней',
			'default-range': 'Пожалуйста выберите диапазон между %d и %d днями',
			'default-default': 'Пожалуйста выберите диапазон'
		},
		'fr':
		{
			'selected': 'Sélection:',
			'day':'Jour',
			'days': 'Jours',
			'apply': 'Fermer',
			'week-1' : 'LU',
			'week-2' : 'MA',
			'week-3' : 'ME',
			'week-4' : 'JE',
			'week-5' : 'VE',
			'week-6' : 'SA',
			'week-7' : 'DI',
			'month-name': ['JANVIER','FÉVRIER','MARS','AVRIL','MAI','JUIN','JUILLET','AOÛT','SEPTEMBRE','OCTOBRE','NOVEMBRE','DÉCEMBRE'],
			'shortcuts' : 'Raccourcis',
			'past': 'Passé',
			'following':'Suivant',
			'previous' : 'Précédent',
			'prev-week' : 'Semaine',
			'prev-month' : 'Mois',
			'prev-year' : 'Année',
			'next':'Suivant',
			'next-week':'Semaine',
			'next-month':'Mois',
			'next-year':'Année',
			'less-than' : 'L\'intervalle ne doit pas être supérieure à %d jours',
			'more-than' : 'L\'intervalle ne doit pas être inférieure à %d jours',
			'default-more' : 'Merci de choisir une intervalle supérieure à %d jours',
			'default-single' : 'Merci de choisir une date',
			'default-less' : 'Merci de choisir une intervalle inférieure %d jours',
			'default-range' : 'Merci de choisir une intervalle comprise entre %d et %d jours',
			'default-default': 'Merci de choisir une date'
		}
	};


	if (window['moment'] === undefined)
	{
		if (window['console'] && console['warn']) console.warn('Please import moment.js before daterangepicker.js');
		return;
	}

	$.fn.dateRangePicker = function(opt)
	{
		if (!opt) opt = {};
		opt = $.extend(true,
		{
			autoClose: false,
			format: 'YYYY-MM-DD',
			separator: ' to ',
			language: 'auto',
			startOfWeek: 'sunday',// or monday
			getValue: function()
			{
				return $(this).val();
			},
			setValue: function(s)
			{
				if(!$(this).attr('readonly') && !$(this).is(':disabled')){
					$(this).val(s);
				}
			},
			startDate: false,
			endDate: false,
			time: {
				enabled: false
			},
			minDays: 0,
			maxDays: 0,
			showShortcuts: true,
			shortcuts:
			{
				//'prev-days': [1,3,5,7],
				'next-days': [3,5,7],
				//'prev' : ['week','month','year'],
				'next' : ['week','month','year']
			},
			customShortcuts : [],
			inline:false,
			container:'body',
			alwaysOpen:false,
			singleDate:false,
			batchMode: false,
			duration: 200
		},opt);

		opt.start = false;
		opt.end = false;

		if (opt.startDate && typeof opt.startDate == 'string') opt.startDate = moment(opt.startDate,opt.format).toDate();
		if (opt.endDate && typeof opt.endDate == 'string') opt.endDate = moment(opt.endDate,opt.format).toDate();

		var langs = getLanguages();
		var box;
		var initiated = false;
		var self = this;
		var selfDom = $(self).get(0);

		$(this).unbind('.datepicker').bind('click.datepicker',function(evt)
		{
			var isOpen = box.is(':visible');
			$(document).trigger('click.datepicker');
			evt.stopPropagation();
			if(!isOpen) open(opt.duration);
		});

		init_datepicker.call(this);

		if (opt.alwaysOpen)
		{
			open(0);
		}

		// expose some api
		$(this).data('dateRangePicker',
		{
			setDateRange : function(d1,d2)
			{
				if (typeof d1 == 'string' && typeof d2 == 'string')
				{
					d1 = moment(d1,opt.format).toDate();
					d2 = moment(d2,opt.format).toDate();
				}
				setDateRange(d1,d2);
			},
			clear: clearSelection,
			close: closeDatePicker,
			open: open,
			getDatePicker: getDatePicker,
			destroy: function()
			{
				$(self).unbind('.datepicker');
				$(self).data('dateRangePicker','');
				box.remove();
				$(window).unbind('resize.datepicker',calcPosition);
				$(document).unbind('click.datepicker',closeDatePicker);
			}
		});

		$(window).bind('resize.datepicker',calcPosition);

		return this;











		function init_datepicker()
		{
			var self = this;

			if ($(this).data('date-picker-opened'))
			{
				closeDatePicker();
				return;
			}
			$(this).data('date-picker-opened',true);





			box = createDom().hide();
			$(opt.container).append(box);

			if (!opt.inline)
			{
				calcPosition();
			}
			else
			{
				box.addClass("inline-wrapper").css({position:'static'});
			}

			if (opt.alwaysOpen)
			{
				box.find('.apply-btn').hide();
			}

			var defaultTime = opt.defaultTime ? opt.defaultTime : new Date();
			if (opt.startDate && compare_month(defaultTime,opt.startDate) < 0 ) defaultTime = moment(opt.startDate).toDate();
			if (opt.endDate && compare_month(nextMonth(defaultTime),opt.endDate) > 0 ) defaultTime = prevMonth(moment(opt.endDate).toDate());


			showMonth(defaultTime,'month1');
			showMonth(nextMonth(defaultTime),'month2');

			if (opt.time.enabled) {
				if ((opt.startDate && opt.endDate) || (opt.start && opt.end)) {
					showTime(moment(opt.start || opt.startDate).toDate(),'time1');
					showTime(moment(opt.end || opt.endDate).toDate(),'time2');
				} else {
					showTime(defaultTime,'time1');
					showTime(defaultTime,'time2');
				}
			}

			//showSelectedInfo();




			var defaultTopText = '';
			if (opt.singleDate)
				defaultTopText = lang('default-single');
			else if (opt.minDays && opt.maxDays)
				defaultTopText = lang('default-range');
			else if (opt.minDays)
				defaultTopText = lang('default-more');
			else if (opt.maxDays)
				defaultTopText = lang('default-less');
			else
				defaultTopText = lang('default-default');

			box.find('.default-top').html( defaultTopText.replace(/\%d/,opt.minDays).replace(/\%d/,opt.maxDays));




			setTimeout(function()
			{
				initiated = true;
			},0);

			box.click(function(evt)
			{
				evt.stopPropagation();
			});

			$(document).bind('click.datepicker',closeDatePicker);

			box.find('.next').click(function()
			{
				var isMonth2 = $(this).parents('table').hasClass('month2');
				var month = isMonth2 ? opt.month2 : opt.month1;
				month = nextMonth(month);
				if (!opt.singleDate && !isMonth2 && compare_month(month,opt.month2) >= 0 || isMonthOutOfBounds(month)) return;
				showMonth(month,isMonth2 ? 'month2' : 'month1');
				showGap();
			});

			box.find('.prev').click(function()
			{
				var isMonth2 = $(this).parents('table').hasClass('month2');
				var month = isMonth2 ? opt.month2 : opt.month1;
				month = prevMonth(month);
				//if (isMonth2 && month.getFullYear()+''+month.getMonth() <= opt.month1.getFullYear()+''+opt.month1.getMonth()) return;
				if (isMonth2 && compare_month(month,opt.month1) <= 0 || isMonthOutOfBounds(month)) return;
				showMonth(month,isMonth2 ? 'month2' : 'month1');
				showGap();
			});


			box.bind('click',function(evt)
			{
				if ($(evt.target).hasClass('day'))
				{
					dayClicked($(evt.target));
				}
			});

			box.attr('unselectable', 'on')
			.css('user-select', 'none')
			.bind('selectstart', function(e)
			{
				e.preventDefault(); return false;
			});

			box.find('.apply-btn').click(function()
			{
				closeDatePicker();
				var dateRange = getDateString(new Date(opt.start))+ opt.separator +getDateString(new Date(opt.end));
				$(self).trigger('datepicker-apply',
				{
					'value': dateRange,
					'date1' : new Date(opt.start),
					'date2' : new Date(opt.end)
				});
			});

			box.find('[shortcut]').click(function()
			{
				var shortcut = $(this).attr('shortcut');
				var end = new Date(),start = false;
				if (shortcut.indexOf('day') != -1)
				{
					var day = parseInt(shortcut.split(',',2)[1],10);
					start = new Date(new Date().getTime() + 86400000*day);
					end = new Date(end.getTime() + 86400000*(day>0?1:-1) );
				}
				else if (shortcut.indexOf('week')!= -1)
				{
					var dir = shortcut.indexOf('prev,') != -1 ? -1 : 1;

					if (dir == 1)
						var stopDay = opt.startOfWeek == 'monday' ? 1 : 0;
					else
						var stopDay = opt.startOfWeek == 'monday' ? 0 : 6;

					end = new Date(end.getTime() - 86400000);
					while(end.getDay() != stopDay) end = new Date(end.getTime() + dir*86400000);
					start = new Date(end.getTime() + dir*86400000*6);
				}
				else if (shortcut.indexOf('month') != -1)
				{
					var dir = shortcut.indexOf('prev,') != -1 ? -1 : 1;
					if (dir == 1)
						start = nextMonth(end);
					else
						start = prevMonth(end);
					start.setDate(1);
					end = nextMonth(start);
					end.setDate(1);
					end = new Date(end.getTime() - 86400000);
				}
				else if (shortcut.indexOf('year') != -1)
				{
					var dir = shortcut.indexOf('prev,') != -1 ? -1 : 1;
					start = new Date();
					start.setFullYear(end.getFullYear() + dir);
					start.setMonth(0);
					start.setDate(1);
					end.setFullYear(end.getFullYear() + dir);
					end.setMonth(11);
					end.setDate(31);
				}
				else if (shortcut == 'custom')
				{
					var name = $(this).html();
					if (opt.customShortcuts && opt.customShortcuts.length > 0)
					{
						for(var i=0;i<opt.customShortcuts.length;i++)
						{
							var sh = opt.customShortcuts[i];
							if (sh.name == name)
							{
								var data = [];
								// try
								// {
									data = sh['dates'].call();
								//}catch(e){}
								if (data && data.length == 2)
								{
									start = data[0];
									end = data[1];
								}

								// if only one date is specified then just move calendars there
								// move calendars to show this date's month and next months
								if (data && data.length == 1)
								{
									movetodate = data[0];
									showMonth(movetodate,'month1');
									showMonth(nextMonth(movetodate),'month2');
									showGap();
								}

								break;
							}
						}
					}
				}
				if (start && end)
				{
					setDateRange(start,end);
					checkSelectionValid();
				}
			});

			box.find(".time1 input[type=range]").bind("change mousemove", function (e) {
				var target = e.target,
					hour = target.name == "hour" ? $(target).val().replace(/^(\d{1})$/, "0$1") : undefined,
					min = target.name == "minute" ? $(target).val().replace(/^(\d{1})$/, "0$1") : undefined;
				setTime("time1", hour, min);
			});

			box.find(".time2 input[type=range]").bind("change mousemove", function (e) {
				var target = e.target,
					hour = target.name == "hour" ? $(target).val().replace(/^(\d{1})$/, "0$1") : undefined,
					min = target.name == "minute" ? $(target).val().replace(/^(\d{1})$/, "0$1") : undefined;
				setTime("time2", hour, min);
			});

		}


		function calcPosition()
		{
			if (!opt.inline)
			{
				var offset = $(self).offset();
		                if ($(opt.container).css("position") == "relative") 
		                {
		                    var containerOffset = $(opt.container).offset();
		                    box.css(
		                    {
		                        top: offset.top - containerOffset.top + $(self).outerHeight() + 4, 
		                        left: offset.left - containerOffset.left
		                    });
		                } 
		                else 
		                {
		                    if (offset.left < 460) //left to right
		                    {
		                        box.css(
		                        {
		                            top: offset.top+$(self).outerHeight() + parseInt($('body').css('border-top') || 0,10 ),
		                            left: offset.left
		                        });
		                    }
		                    else
		                    {
		                        box.css(
		                        {
		                            top: offset.top+$(self).outerHeight() + parseInt($('body').css('border-top') || 0,10 ),
		                            left: offset.left + $(self).width() - box.width() - 16
		                        });
		                    }
		                }
			}
		}
		
		// Return the date picker wrapper element
		function getDatePicker()
		{
			return box;
		}

		function open(animationTime)
		{
			calcPosition();
			var __default_string = opt.getValue.call(selfDom);
			var defaults = __default_string ? __default_string.split( opt.separator ) : '';

			if (defaults && ((defaults.length==1 && opt.singleDate) || defaults.length>=2))
			{
				var ___format = opt.format;
				if (___format.match(/Do/))
				{

					___format = ___format.replace(/Do/,'D');
					defaults[0] = defaults[0].replace(/(\d+)(th|nd|st)/,'$1');
					if(defaults.length >= 2){
						defaults[1] = defaults[1].replace(/(\d+)(th|nd|st)/,'$1');
					}
				}
        		// set initiated  to avoid triggerring datepicker-change event 
        		initiated = false;
        		if(defaults.length >= 2){
					setDateRange(moment(defaults[0], ___format).toDate(),moment(defaults[1], ___format).toDate());
				}
				else if(defaults.length==1 && opt.singleDate){
					setSingleDate(moment(defaults[0], ___format).toDate());
				}

        		initiated = true;
			}
			box.slideDown(animationTime);
		}



		function renderTime (name, date) {
			box.find("." + name + " input[type=range].hour-range").val(moment(date).hours());
			box.find("." + name + " input[type=range].minute-range").val(moment(date).minutes());
			setTime(name, moment(date).format("HH"), moment(date).format("mm"));
		}

		function changeTime (name, date) {
			opt[name] = parseInt(
				moment(parseInt(date))
					.startOf('day')
					.add('h', moment(opt[name + "Time"]).format("HH"))
					.add('m', moment(opt[name + "Time"]).format("mm")).valueOf()
				);
		}

		function swapTime () {
			renderTime("time1", opt.start);
			renderTime("time2", opt.end);
		}

		function setTime (name, hour, minute) {
			hour && (box.find("." + name + " .hour-val").text(hour));
			minute && (box.find("." + name + " .minute-val").text(minute));
			switch (name) {
				case "time1":
					if (opt.start) {
						setRange("start", moment(opt.start));
					}
					setRange("startTime", moment(opt.startTime || moment().valueOf()));
					break;
				case "time2":
					if (opt.end) {
						setRange("end", moment(opt.end));
					}
					setRange("endTime", moment(opt.endTime || moment().valueOf()));
					break;
			}
			function setRange(name, timePoint) {
				var h = timePoint.format("HH"),
					m = timePoint.format("mm");
				opt[name] = timePoint
					.startOf('day')
					.add("h", hour || h)
					.add("m", minute || m)
					.valueOf();
			}
			checkSelectionValid();
			showSelectedInfo();
			showSelectedDays();
		}

		function clearSelection()
		{
			opt.start = false;
			opt.end = false;
			box.find('.day.checked').removeClass('checked');
			opt.setValue.call(selfDom, '');
			checkSelectionValid();
			showSelectedInfo();
			showSelectedDays();
		}

    function handleStart(time)
    {
      var r = time;
      if  (opt.batchMode === 'week-range') {
        if (opt.startOfWeek === 'monday') {
					r = moment(parseInt(time)).startOf('isoweek').valueOf();
				} else {
					r = moment(parseInt(time)).startOf('week').valueOf();
				}
      } else if (opt.batchMode === 'month-range') {
				r = moment(parseInt(time)).startOf('month').valueOf();
      }

      return r;
    }

    function handleEnd(time)
    {
      var r = time;
      if  (opt.batchMode === 'week-range') {
        if (opt.startOfWeek === 'monday') {
					r = moment(parseInt(time)).endOf('isoweek').valueOf();
				} else {
					r = moment(parseInt(time)).endOf('week').valueOf();
				}
      } else if (opt.batchMode === 'month') {
				r = moment(parseInt(time)).endOf('month').valueOf();
      }

      return r;
    }


		function dayClicked(day)
		{
			if (day.hasClass('invalid')) return;
			var time = day.attr('time');
			day.addClass('checked');
			if ( opt.singleDate )
			{
				opt.start = time;
				opt.end = false;
				if (opt.time.enabled) {
					changeTime("start", opt.start);
				}
			}
			else if  (opt.batchMode === 'week')
			{
				if (opt.startOfWeek === 'monday') {
					opt.start = moment(parseInt(time)).startOf('isoweek').valueOf();
					opt.end = moment(parseInt(time)).endOf('isoweek').valueOf();
				} else {
					opt.end = moment(parseInt(time)).endOf('week').valueOf();
					opt.start = moment(parseInt(time)).startOf('week').valueOf();
				}
			}
			else if (opt.batchMode === 'month')
			{
				opt.start = moment(parseInt(time)).startOf('month').valueOf();
				opt.end = moment(parseInt(time)).endOf('month').valueOf();
			}
			else if ((opt.start && opt.end) || (!opt.start && !opt.end) )
			{
				opt.start = handleStart(time);
				opt.end = false;
				if (opt.time.enabled) {
					changeTime("start", opt.start);
				}
			}
			else if (opt.start)
			{
				opt.end = handleEnd(time);
				if (opt.time.enabled) {
					changeTime("end", opt.end);
				}
			}

			if (!opt.singleDate && opt.start && opt.end && opt.start > opt.end)
			{
				var tmp = opt.end;
				opt.end = handleEnd(opt.start);
				opt.start = handleStart(tmp);
				if (opt.time.enabled) {
					swapTime();
				}
			}

			opt.start = parseInt(opt.start);
			opt.end = parseInt(opt.end);

			checkSelectionValid();
			showSelectedInfo();
			showSelectedDays();
			autoclose();
		}

		function autoclose () {
			if (opt.singleDate === true) {
				if (initiated && opt.start )
				{
					if (opt.autoClose) closeDatePicker();
				}
			} else {
				if (initiated && opt.start && opt.end)
				{
					if (opt.autoClose) closeDatePicker();
				}
			}
		}

		function checkSelectionValid()
		{
			var days = Math.ceil( (opt.end - opt.start) / 86400000 ) + 1;
			if (opt.singleDate) { // Validate if only start is there
				if (opt.start && !opt.end)
					box.find('.drp_top-bar').removeClass('error').addClass('normal');
				else
					box.find('.drp_top-bar').removeClass('error').removeClass('normal');
			}
			else if ( opt.maxDays && days > opt.maxDays)
			{
				opt.start = false;
				opt.end = false;
				box.find('.day').removeClass('checked');
				box.find('.drp_top-bar').removeClass('normal').addClass('error').find('.error-top').html( lang('less-than').replace('%d',opt.maxDays) );
			}
			else if ( opt.minDays && days < opt.minDays)
			{
				opt.start = false;
				opt.end = false;
				box.find('.day').removeClass('checked');
				box.find('.drp_top-bar').removeClass('normal').addClass('error').find('.error-top').html( lang('more-than').replace('%d',opt.minDays) );
			}
			else
			{
				if (opt.start || opt.end)
					box.find('.drp_top-bar').removeClass('error').addClass('normal');
				else
					box.find('.drp_top-bar').removeClass('error').removeClass('normal');
			}

			if ( (opt.singleDate && opt.start && !opt.end) || (!opt.singleDate && opt.start && opt.end) )
			{
				box.find('.apply-btn').removeClass('disabled');
			}
			else
			{
				box.find('.apply-btn').addClass('disabled');
			}

			if (opt.batchMode)
			{
				if ( (opt.start && opt.startDate && compare_day(opt.start, opt.startDate) < 0)
					|| (opt.end && opt.endDate && compare_day(opt.end, opt.endDate) > 0)  )
				{
					opt.start = false;
					opt.end = false;
					box.find('.day').removeClass('checked');
				}
			}
		}

		function showSelectedInfo()
		{
			box.find('.start-day').html('...');
			box.find('.end-day').html('...');
			box.find('.selected-days').hide();
			if (opt.start)
			{
				box.find('.start-day').html(getDateString(new Date(parseInt(opt.start))));
			}
			if (opt.end)
			{
				box.find('.end-day').html(getDateString(new Date(parseInt(opt.end))));
			}

			if (opt.start && opt.singleDate)
			{
				box.find('.apply-btn').removeClass('disabled');
				var dateRange = getDateString(new Date(opt.start));
				opt.setValue.call(selfDom, dateRange, getDateString(new Date(opt.start)), getDateString(new Date(opt.end)));

				if (initiated)
				{
					$(self).trigger('datepicker-change',
					{
						'value': dateRange,
						'date1' : new Date(opt.start)
					});
				}
			}
			else if (opt.start && opt.end)
			{
				box.find('.selected-days').show().find('.selected-days-num').html(Math.round((opt.end-opt.start)/86400000)+1);
				box.find('.apply-btn').removeClass('disabled');
				var dateRange = getDateString(new Date(opt.start))+ opt.separator +getDateString(new Date(opt.end));
				opt.setValue.call(selfDom,dateRange, getDateString(new Date(opt.start)), getDateString(new Date(opt.end)));
				if (initiated)
				{
					$(self).trigger('datepicker-change',
					{
						'value': dateRange,
						'date1' : new Date(opt.start),
						'date2' : new Date(opt.end)
					});
				}
			}
			else
			{
				box.find('.apply-btn').addClass('disabled');
			}
		}

		function setDateRange(date1,date2)
		{
			if (date1.getTime() > date2.getTime())
			{
				var tmp = date2;
				date2 = date1;
				date1 = tmp;
				tmp = null;
			}
			var valid = true;
			if (opt.startDate && compare_day(date1,opt.startDate) < 0) valid = false;
			if (opt.endDate && compare_day(date2,opt.endDate) > 0) valid = false;
			if (!valid)
			{
				showMonth(opt.startDate,'month1');
				showMonth(nextMonth(opt.startDate),'month2');
				showGap();
				return;
			}

			opt.start = date1.getTime();
			opt.end = date2.getTime();
			if (compare_day(date1,date2) > 0 && compare_month(date1,date2) == 0)
			{
				date2 = nextMonth(date1);
			}
			if (opt.time.enabled) {
				renderTime("time1", date1);
				renderTime("time2", date2);
			}
			showMonth(date1,'month1');
			showMonth(date2,'month2');
			showGap();
			showSelectedInfo();
			autoclose();
		}
		
		function setSingleDate(date1)
		{
			
			var valid = true;
			if (opt.startDate && compare_day(date1,opt.startDate) < 0) valid = false;
			if (opt.endDate && compare_day(date1,opt.endDate) > 0) valid = false;
			if (!valid)
			{
				showMonth(opt.startDate,'month1');
				
				//showGap();
				return;
			}

			opt.start = date1.getTime();
			
			
			if (opt.time.enabled) {
				renderTime("time1", date1);
				
			}
			showMonth(date1,'month1');
			//showMonth(date2,'month2');
			showGap();
			showSelectedInfo();
			autoclose();
		}

		function showSelectedDays()
		{
			if (!opt.start && !opt.end) return;
			box.find('.day').each(function()
			{
				var time = parseInt($(this).attr('time')),
					start = opt.start,
					end = opt.end;
				if (opt.time.enabled) {
					time = moment(time).startOf('day').valueOf();
					start = moment(start || moment().valueOf()).startOf('day').valueOf();
					end = moment(end || moment().valueOf()).startOf('day').valueOf();
				}
				if (
					(opt.start && opt.end && end >= time && start <= time )
					|| ( opt.start && !opt.end && moment(start).format('YYYY-MM-DD') == moment(time).format('YYYY-MM-DD') )
				)
				{
					$(this).addClass('checked');
				}
				else
				{
					$(this).removeClass('checked');
				}
			});
		}

		function showMonth(date,month)
		{
			date = moment(date).toDate();
			var monthName = nameMonth(date.getMonth());
			box.find('.'+month+' .month-name').html(monthName+' '+date.getFullYear());
			box.find('.'+month+' tbody').html(createMonthHTML(date));
			opt[month] = date;
		}

		function showTime(date,name)
		{
			box.find('.' + name).append(getTimeHTML());
			renderTime(name, date);
		}

		function nameMonth(m)
		{
			return lang('month-name')[m];
		}

		function getDateString(d)
		{
			return moment(d).format(opt.format);
		}

		function showGap()
		{
			showSelectedDays();
			var m1 = parseInt(moment(opt.month1).format('YYYYMM'));
			var m2 = parseInt(moment(opt.month2).format('YYYYMM'));
			var p = Math.abs(m1 - m2);
			var shouldShow = (p > 1 && p !=89);
			if (shouldShow)
				box.find('.gap').show();
			else
				box.find('.gap').hide();
		}

		function closeDatePicker()
		{
			if (opt.alwaysOpen) return;
			$(box).slideUp(opt.duration,function()
			{
				$(self).data('date-picker-opened',false);
			});
			//$(document).unbind('.datepicker');
			$(self).trigger('datepicker-close');
		}

		function compare_month(m1,m2)
		{
			var p = parseInt(moment(m1).format('YYYYMM')) - parseInt(moment(m2).format('YYYYMM'));
			if (p > 0 ) return 1;
			if (p == 0) return 0;
			return -1;
		}

		function compare_day(m1,m2)
		{
			var p = parseInt(moment(m1).format('YYYYMMDD')) - parseInt(moment(m2).format('YYYYMMDD'));
			if (p > 0 ) return 1;
			if (p == 0) return 0;
			return -1;
		}

		function nextMonth(month)
		{
			month = moment(month).toDate();
			var toMonth = month.getMonth();
			while(month.getMonth() == toMonth) month = new Date(month.getTime()+86400000);
			return month;
		}

		function prevMonth(month)
		{
			month = moment(month).toDate();
			var toMonth = month.getMonth();
			while(month.getMonth() == toMonth) month = new Date(month.getTime()-86400000);
			return month;
		}

		function getTimeHTML()
		{
			var timeHtml = '<div>'
				+'<span>Time: <span class="hour-val">00</span>:<span class="minute-val">00</span></span>'
				+'</div>'
				+'<div class="hour">'
				+'<label>Hour: <input type="range" class="hour-range" name="hour" min="0" max="23"></label>'
				+'</div>'
				+'<div class="minute">'
				+'<label>Minute: <input type="range" class="minute-range" name="minute" min="0" max="59"></label>'
				+'</div>';
			return timeHtml;
		}

		function createDom()
		{
			var html = '<div class="date-picker-wrapper'
			if ( opt.singleDate ) html += ' single-date';
			if ( !opt.showShortcuts ) html += ' no-shortcuts ';
			html += '">'
				+'<div class="drp_top-bar">\
					<div class="normal-top">\
						<span style="color:#333">'+lang('selected')+' </span> <b class="start-day">...</b>'
			if ( ! opt.singleDate ) {
				html += ' <span class="separator-day">'+opt.separator+'</span> <b class="end-day">...</b> <i class="selected-days">(<span class="selected-days-num">3</span> '+lang('days')+')</i>'
			}
			html += '</div>\
					<div class="error-top">error</div>\
					<div class="default-top">default</div>\
					<input type="button" class="apply-btn disabled '+ getHideClass() +'" value="'+lang('apply')+'" />\
				</div>'
				+'<div class="month-wrapper">'
				+'<table class="month1" cellspacing="0" border="0" cellpadding="0"><thead><tr class="caption"><th style="width:27px;"><span class="prev">&lt;</span></th><th colspan="5" class="month-name">January, 2011</th><th style="width:27px;"><span class="next">&gt;</span></th></tr><tr class="week-name">'+getWeekHead()+'</thead><tbody></tbody></table>'
			if ( ! opt.singleDate ) {
				html += '<div class="gap">'+getGapHTML()+'</div>'
					+'<table class="month2" cellspacing="0" border="0" cellpadding="0"><thead><tr class="caption"><th style="width:27px;"><span class="prev">&lt;</span></th><th colspan="5" class="month-name">January, 2011</th><th style="width:27px;"><span class="next">&gt;</span></th></tr><tr class="week-name">'+getWeekHead()+'</thead><tbody></tbody></table>'
			}
				//+'</div>'
			html +=	'<div style="clear:both;height:0;font-size:0;"></div>'
				+'<div class="time">'
				+'<div class="time1"></div>'
			if ( ! opt.singleDate ) {
				html += '<div class="time2"></div>'
			}
			html += '</div>'
				+'<div style="clear:both;height:0;font-size:0;"></div>'
				+'</div>';

			if (opt.showShortcuts)
			{
				html += '<div class="footer"><b>'+lang('shortcuts')+'</b>';

				var data = opt.shortcuts;
				if (data)
				{
					if (data['prev-days'] && data['prev-days'].length > 0)
					{
						html += '&nbsp;<span class="prev-days">'+lang('past');
						for(var i=0;i<data['prev-days'].length; i++)
						{
							var name = data['prev-days'][i];
							name += (data['prev-days'][i] > 1) ? lang('days') : lang('day');
							html += ' <a href="javascript:;" shortcut="day,-'+data['prev-days'][i]+'">'+name+'</a>';
						}
						html+='</span>';
					}

					if (data['next-days'] && data['next-days'].length > 0)
					{
						html += '&nbsp;<span class="next-days">'+lang('following');
						for(var i=0;i<data['next-days'].length; i++)
						{
							var name = data['next-days'][i];
							name += (data['next-days'][i] > 1) ? lang('days') : lang('day');
							html += ' <a href="javascript:;" shortcut="day,'+data['next-days'][i]+'">'+name+'</a>';
						}
						html+= '</span>';
					}

					if (data['prev'] && data['prev'].length > 0)
					{
						html += '&nbsp;<span class="prev-buttons">'+lang('previous');
						for(var i=0;i<data['prev'].length; i++)
						{
							var name = lang('prev-'+data['prev'][i]);
							html += ' <a href="javascript:;" shortcut="prev,'+data['prev'][i]+'">'+name+'</a>';
						}
						html+='</span>';
					}

					if (data['next'] && data['next'].length > 0)
					{
						html += '&nbsp;<span class="next-buttons">'+lang('next');
						for(var i=0;i<data['next'].length; i++)
						{
							var name = lang('next-'+data['next'][i]);
							html += ' <a href="javascript:;" shortcut="next,'+data['next'][i]+'">'+name+'</a>';
						}
						html+='</span>';
					}
				}

				if (opt.customShortcuts)
				{
					for(var i=0;i<opt.customShortcuts.length; i++)
					{
						var sh = opt.customShortcuts[i];
						html+= '&nbsp;<span class="custom-shortcut"><a href="javascript:;" shortcut="custom">'+sh.name+'</a></span>';
					}
				}

				html +='</div>';
			}
			html += '</div>';


			return $(html);
		}

		function getHideClass()
		{
			if (opt.autoClose === true) {
				return 'hide';
			}
			return '';
		}

		function getWeekHead()
		{
			if (opt.startOfWeek == 'monday')
			{
				return '<th>'+lang('week-1')+'</th>\
					<th>'+lang('week-2')+'</th>\
					<th>'+lang('week-3')+'</th>\
					<th>'+lang('week-4')+'</th>\
					<th>'+lang('week-5')+'</th>\
					<th>'+lang('week-6')+'</th>\
					<th>'+lang('week-7')+'</th>';
			}
			else
			{
				return '<th>'+lang('week-7')+'</th>\
					<th>'+lang('week-1')+'</th>\
					<th>'+lang('week-2')+'</th>\
					<th>'+lang('week-3')+'</th>\
					<th>'+lang('week-4')+'</th>\
					<th>'+lang('week-5')+'</th>\
					<th>'+lang('week-6')+'</th>';
			}
		}
                function isMonthOutOfBounds(month)
                {
                        var month = moment(month);
                        if (opt.startDate && month.endOf('month').isBefore(opt.startDate))
                        {
                                return true;
                        }
                        if (opt.endDate && month.startOf('month').isAfter(opt.endDate)) 
                        {
                                return true;
                        }
                        return false;
                }

		function getGapHTML()
		{
			var html = ['<div class="gap-top-mask"></div><div class="gap-bottom-mask"></div><div class="gap-lines">'];
			for(var i=0;i<20;i++)
			{
				html.push('<div class="gap-line">\
					<div class="gap-1"></div>\
					<div class="gap-2"></div>\
					<div class="gap-3"></div>\
				</div>');
			}
			html.push('</div>');
			return html.join('');
		}

		function createMonthHTML(d)
		{
			var days = [];
			d.setDate(1);
			var lastMonth = new Date(d.getTime() - 86400000);
			var now = new Date();

			var dayOfWeek = d.getDay();
			if((dayOfWeek == 0) && (opt.startOfWeek == 'monday')) {
				// add one week
				dayOfWeek = 7;
			}

			if (dayOfWeek > 0)
			{
				for (var i = dayOfWeek; i > 0; i--)
				{
					var day = new Date(d.getTime() - 86400000*i);
					var valid = true;
					if (opt.startDate && compare_day(day,opt.startDate) < 0) valid = false;
					if (opt.endDate && compare_day(day,opt.endDate) > 0) valid = false;
					days.push({type:'lastMonth',day: day.getDate(),time:day.getTime(), valid:valid });
				}
			}
			var toMonth = d.getMonth();
			for(var i=0; i<40; i++)
			{
				var today = moment(d).add(i,'days').toDate();
				var valid = true;
				if (opt.startDate && compare_day(today,opt.startDate) < 0) valid = false;
				if (opt.endDate && compare_day(today,opt.endDate) > 0) valid = false;
				days.push({type: today.getMonth() == toMonth ? 'toMonth' : 'nextMonth',day: today.getDate(),time:today.getTime(), valid:valid });
			}
			var html = [];
			for(var week=0; week<6; week++)
			{
				if (days[week*7].type == 'nextMonth') break;
				html.push('<tr>');
				for(var day = 0; day<7; day++)
				{
					var _day = (opt.startOfWeek == 'monday') ? day+1 : day;
					var today = days[week*7+_day];
					var highlightToday = moment(today.time).format('L') == moment(now).format('L');
					today.extraClass = '';
					today.tooltip = '';
					if(opt.beforeShowDay && typeof opt.beforeShowDay == 'function')
					{
						var _r = opt.beforeShowDay(moment(today.time).toDate());
						today.valid = _r[0];
						today.extraClass = _r[1] || '';
						today.tooltip = _r[2] || '';
						if (today.tooltip != '') today.extraClass += ' has-tooltip ';
					}
					html.push('<td><div time="'+today.time+'" title="'+today.tooltip+'" class="day '+today.type+' '+today.extraClass+' '+(today.valid ? 'valid' : 'invalid')+' '+(highlightToday?'real-today':'')+'">'+today.day+'</div></td>');
				}
				html.push('</tr>');
			}
			return html.join('');
		}

		function getLanguages()
		{
			if (opt.language == 'auto')
			{
				var language = navigator.language ? navigator.language : navigator.browserLanguage;
				if (!language) return $.dateRangePickerLanguages['en'];
				var language = language.toLowerCase();
				for(var key in $.dateRangePickerLanguages)
				{
					if (language.indexOf(key) != -1)
					{
						return $.dateRangePickerLanguages[key];
					}
				}
				return $.dateRangePickerLanguages['en'];
			}
			else if ( opt.language && opt.language in $.dateRangePickerLanguages)
			{
				return $.dateRangePickerLanguages[opt.language];
			}
			else
			{
				return $.dateRangePickerLanguages['en'];
			}
		}

		function lang(t)
		{
			return (t in langs)? langs[t] : t;
		}


	};
})(jQuery);
