text: /*
   *               ~ CLNDR v1.2.0 ~
   * ==============================================
   *       https://github.com/kylestetz/CLNDR
   * ==============================================
   *  created by kyle stetz (github.com/kylestetz)
   *        &available under the MIT license
   * http://opensource.org/licenses/mit-license.php
   * ==============================================
   *
   * This is the fully-commented development version of CLNDR.
   * For the production version, check out clndr.min.js
   * at https://github.com/kylestetz/CLNDR
   *
   * This work is based on the
   * jQuery lightweight plugin boilerplate
   * Original author: @ajpiano
   * Further changes, comments: @addyosmani
   * Licensed under the MIT license
   */
  
  ;(function ( $, window, document, undefined ) {
  
    // This is the default calendar template. This can be overridden.
    var clndrTemplate = "<div class='clndr-controls'>" +
      "<div class='clndr-control-button'><span class='clndr-previous-button'>previous</span></div><div class='month'><%= month %> <%= year %></div><div class='clndr-control-button rightalign'><span class='clndr-next-button'>next</span></div>" +
      "</div>" +
    "<table class='clndr-table' border='0' cellspacing='0' cellpadding='0'>" +
      "<thead>" +
      "<tr class='header-days'>" +
      "<% for(var i = 0; i < daysOfTheWeek.length; i++) { %>" +
        "<td class='header-day'><%= daysOfTheWeek[i] %></td>" +
      "<% } %>" +
      "</tr>" +
      "</thead>" +
      "<tbody>" +
      "<% for(var i = 0; i < numberOfRows; i++){ %>" +
        "<tr>" +
        "<% for(var j = 0; j < 7; j++){ %>" +
        "<% var d = j + i * 7; %>" +
        "<td class='<%= days[d].classes %>'><div class='day-contents'><%= days[d].day %>" +
        "</div></td>" +
        "<% } %>" +
        "</tr>" +
      "<% } %>" +
      "</tbody>" +
    "</table>";
  
    var pluginName = 'clndr';
  
    var defaults = {
      template: clndrTemplate,
      weekOffset: 0,
      startWithMonth: null,
      clickEvents: {
        click: null,
        nextMonth: null,
        previousMonth: null,
        nextYear: null,
        previousYear: null,
        today: null,
        onMonthChange: null,
        onYearChange: null
      },
      targets: {
        nextButton: 'clndr-next-button',
        previousButton: 'clndr-previous-button',
        nextYearButton: 'clndr-next-year-button',
        previousYearButton: 'clndr-previous-year-button',
        todayButton: 'clndr-today-button',
        day: 'day',
        empty: 'empty'
      },
      events: [],
      extras: null,
      dateParameter: 'date',
      multiDayEvents: null,
      doneRendering: null,
      render: null,
      daysOfTheWeek: null,
      showAdjacentMonths: true,
      adjacentDaysChangeMonth: false,
      ready: null,
      constraints: null,
      forceSixRows: null
    };
  
    // The actual plugin constructor
    function Clndr( element, options ) {
      this.element = element;
  
      // merge the default options with user-provided options
      this.options = $.extend(true, {}, defaults, options);
  
      // if there are events, we should run them through our addMomentObjectToEvents function
      // which will add a date object that we can use to make life easier. This is only necessary
      // when events are provided on instantiation, since our setEvents function uses addMomentObjectToEvents.
      if(this.options.events.length) {
        if(this.options.multiDayEvents) {
          this.options.events = this.addMultiDayMomentObjectsToEvents(this.options.events);
        } else {
          this.options.events = this.addMomentObjectToEvents(this.options.events);
        }
      }
  
      // this object will store a reference to the current month.
      // it's a moment object, which allows us to poke at it a little if we need to.
      // this will serve as the basis for switching between months & is the go-to
      // internally if we want to know which month we're currently at.
      if(this.options.startWithMonth) {
        this.month = moment(this.options.startWithMonth).startOf('month');
      } else {
        this.month = moment().startOf('month');
      }
  
      // if we've got constraints set, make sure the month is within them.
      if(this.options.constraints) {
        // first check if the start date exists & is later than now.
        if(this.options.constraints.startDate) {
          var startMoment = moment(this.options.constraints.startDate);
          if(this.month.isBefore(startMoment, 'month')) {
            this.month.set('month', startMoment.month());
            this.month.set('year', startMoment.year());
          }
        }
        // make sure the month (whether modified or not) is before the endDate
        if(this.options.constraints.endDate) {
          var endMoment = moment(this.options.constraints.endDate);
          if(this.month.isAfter(endMoment, 'month')) {
            this.month.set('month', endMoment.month()).set('year', endMoment.year());
          }
        }
      }
  
      this._defaults = defaults;
      this._name = pluginName;
  
      // Some first-time initialization -> day of the week offset,
      // template compiling, making and storing some elements we'll need later,
      // & event handling for the controller.
      this.init();
    }
  
    Clndr.prototype.init = function () {
      // create the days of the week using moment's current language setting
      this.daysOfTheWeek = this.options.daysOfTheWeek || [];
      if(!this.options.daysOfTheWeek) {
        this.daysOfTheWeek = [];
        for(var i = 0; i < 7; i++) {
          this.daysOfTheWeek.push( moment().weekday(i).format('dd').charAt(0) );
        }
      }
      // shuffle the week if there's an offset
      if(this.options.weekOffset) {
        this.daysOfTheWeek = this.shiftWeekdayLabels(this.options.weekOffset);
      }
  
      // quick & dirty test to make sure rendering is possible.
      if( !$.isFunction(this.options.render) ) {
        this.options.render = null;
        if (typeof _ === 'undefined') {
          throw new Error("Underscore was not found. Please include underscore.js OR provide a custom render function.");
        }
        else {
          // we're just going ahead and using underscore here if no render method has been supplied.
          this.compiledClndrTemplate = _.template(this.options.template);
        }
      }
  
      // create the parent element that will hold the plugin & save it for later
      $(this.element).html("<div class='clndr'></div>");
      this.calendarContainer = $('.clndr', this.element);
  
      // attach event handlers for clicks on buttons/cells
      this.bindEvents();
  
      // do a normal render of the calendar template
      this.render();
  
      // if a ready callback has been provided, call it.
      if(this.options.ready) {
        this.options.ready.apply(this, []);
      }
    };
  
    Clndr.prototype.shiftWeekdayLabels = function(offset) {
      var days = this.daysOfTheWeek;
      for(var i = 0; i < offset; i++) {
        days.push( days.shift() );
      }
      return days;
    };
  
    // This is where the magic happens. Given a moment object representing the current month,
    // an array of calendarDay objects is constructed that contains appropriate events and
    // classes depending on the circumstance.
    Clndr.prototype.createDaysObject = function(currentMonth) {
      // this array will hold numbers for the entire grid (even the blank spaces)
      daysArray = [];
      var date = currentMonth.startOf('month');
  
      // filter the events list (if it exists) to events that are happening last month, this month and next month (within the current grid view)
      this.eventsLastMonth = [];
      this.eventsThisMonth = [];
      this.eventsNextMonth = [];
  
      if(this.options.events.length) {
  
        // MULTI-DAY EVENT PARSING
        // if we're using multi-day events, the start or end must be in the current month
        if(this.options.multiDayEvents) {
          this.eventsThisMonth = $(this.options.events).filter( function() {
            return this._clndrStartDateObject.format("YYYY-MM") <= currentMonth.format("YYYY-MM")
            || currentMonth.format("YYYY-MM") <= this._clndrEndDateObject.format("YYYY-MM");
          }).toArray();
  
          if(this.options.showAdjacentMonths) {
            var lastMonth = currentMonth.clone().subtract('months', 1);
            var nextMonth = currentMonth.clone().add('months', 1);
            this.eventsLastMonth = $(this.options.events).filter( function() {
              return this._clndrStartDateObject.format("YYYY-MM") <= lastMonth.format("YYYY-MM")
            || lastMonth.format("YYYY-MM") <= this._clndrEndDateObject.format("YYYY-MM");
            }).toArray();
  
            this.eventsNextMonth = $(this.options.events).filter( function() {
              return this._clndrStartDateObject.format("YYYY-MM") <= nextMonth.format("YYYY-MM")
            || nextMonth.format("YYYY-MM") <= this._clndrEndDateObject.format("YYYY-MM");
            }).toArray();
          }
        }
  
        // SINGLE-DAY EVENT PARSING
        // if we're using single-day events, use _clndrDateObject
        else {
          this.eventsThisMonth = $(this.options.events).filter( function() {
            return this._clndrDateObject.format("YYYY-MM") == currentMonth.format("YYYY-MM");
          }).toArray();
  
          // filter the adjacent months as well, if the option is true
          if(this.options.showAdjacentMonths) {
            var lastMonth = currentMonth.clone().subtract('months', 1);
            var nextMonth = currentMonth.clone().add('months', 1);
            this.eventsLastMonth = $(this.options.events).filter( function() {
              return this._clndrDateObject.format("YYYY-MM") == lastMonth.format("YYYY-MM");
            }).toArray();
  
            this.eventsNextMonth = $(this.options.events).filter( function() {
              return this._clndrDateObject.format("YYYY-MM") == nextMonth.format("YYYY-MM");
            }).toArray();
          }
        }
      }
  
      // if diff is greater than 0, we'll have to fill in last days of the previous month
      // to account for the empty boxes in the grid.
      // we also need to take into account the weekOffset parameter
      var diff = date.weekday() - this.options.weekOffset;
      if(diff < 0) diff += 7;
  
      if(this.options.showAdjacentMonths) {
        for(var i = 0; i < diff; i++) {
          var day = moment([currentMonth.year(), currentMonth.month(), i - diff + 1]);
          daysArray.push( this.createDayObject(day, this.eventsLastMonth) );
        }
      } else {
        for(var i = 0; i < diff; i++) {
          daysArray.push( this.calendarDay({ classes: this.options.targets.empty + " last-month" }) );
        }
      }
  
      // now we push all of the days in a month
      var numOfDays = date.daysInMonth();
      for(var i = 1; i <= numOfDays; i++) {
        var day = moment([currentMonth.year(), currentMonth.month(), i]);
        daysArray.push(this.createDayObject(day, this.eventsThisMonth) )
      }
  
      // ...and if there are any trailing blank boxes, fill those in
      // with the next month first days
      var i = 1;
      while(daysArray.length % 7 !== 0) {
        if(this.options.showAdjacentMonths) {
          var day = moment([currentMonth.year(), currentMonth.month(), numOfDays + i]);
          daysArray.push( this.createDayObject(day, this.eventsNextMonth) );
        } else {
          daysArray.push( this.calendarDay({ classes: this.options.targets.empty + " next-month" }) );
        }
        i++;
      }
  
      // if we want to force six rows of calendar, now's our last chance to add another row.
      // if the 42 seems explicit it's because we're creating a 7-row grid and 6 rows of 7 is always 42!
      if(this.options.forceSixRows && daysArray.length !== 42 ) {
        var start = moment(daysArray[daysArray.length - 1].date).add('days', 1);
        while(daysArray.length < 42) {
          if(this.options.showAdjacentMonths) {
            daysArray.push( this.createDayObject(moment(start), this.eventsNextMonth) );
            start.add('days', 1);
          } else {
            daysArray.push( this.calendarDay({ classes: this.options.targets.empty + " next-month" }) );
          }
        }
      }
  
      return daysArray;
    };
  
    Clndr.prototype.createDayObject = function(day, monthEvents) {
      var eventsToday = [];
      var now = moment();
      var self = this;
  
      var j = 0, l = monthEvents.length;
      for(j; j < l; j++) {
        // keep in mind that the events here already passed the month/year test.
        // now all we have to compare is the moment.date(), which returns the day of the month.
        if(self.options.multiDayEvents) {
          var start = monthEvents[j]._clndrStartDateObject;
          var end = monthEvents[j]._clndrEndDateObject;
          // if today is the same day as start or is after the start, and
          // if today is the same day as the end or before the end ...
          // woohoo semantics!
          if( ( day.isSame(start, 'day') || day.isAfter(start, 'day') ) &&
            ( day.isSame(end, 'day') || day.isBefore(end, 'day') ) ) {
            eventsToday.push( monthEvents[j] );
          }
        } else {
          if( monthEvents[j]._clndrDateObject.date() == day.date() ) {
            eventsToday.push( monthEvents[j] );
          }
        }
      }
  
      var extraClasses = "";
  
      if(now.format("YYYY-MM-DD") == day.format("YYYY-MM-DD")) {
         extraClasses += " today";
      }
      if(day.isBefore(now, 'day')) {
        extraClasses += " past";
      }
      if(eventsToday.length) {
         extraClasses += " event";
      }
      if(this.month.month() > day.month()) {
         extraClasses += " adjacent-month";
  
         this.month.year() === day.year()
             ? extraClasses += " last-month"
             : extraClasses += " next-month";
  
      } else if(this.month.month() < day.month()) {
         extraClasses += " adjacent-month";
  
         this.month.year() === day.year()
             ? extraClasses += " next-month"
             : extraClasses += " last-month";
      }
  
      // if there are constraints, we need to add the inactive class to the days outside of them
      if(this.options.constraints) {
        if(this.options.constraints.startDate && day.isBefore(moment( this.options.constraints.startDate ))) {
          extraClasses += " inactive";
        }
        if(this.options.constraints.endDate && day.isAfter(moment( this.options.constraints.endDate ))) {
          extraClasses += " inactive";
        }
      }
  
      // validate moment date
      if (!day.isValid() && day.hasOwnProperty('_d') && day._d != undefined) {
          day = moment(day._d);
      }
  
      // we're moving away from using IDs in favor of classes, since when
      // using multiple calendars on a page we are technically violating the
      // uniqueness of IDs.
      extraClasses += " calendar-day-" + day.format("YYYY-MM-DD");
  
      // day of week
      extraClasses += " calendar-dow-" + day.weekday();
  
      return this.calendarDay({
        day: day.date(),
        classes: this.options.targets.day + extraClasses,
        events: eventsToday,
        date: day
      });
    };
  
    Clndr.prototype.render = function() {
      // get rid of the previous set of calendar parts.
      // TODO: figure out if this is the right way to ensure proper garbage collection?
      this.calendarContainer.children().remove();
      // get an array of days and blank spaces
      var days = this.createDaysObject(this.month);
      // this is to prevent a scope/naming issue between this.month and data.month
      var currentMonth = this.month;
  
      var data = {
        daysOfTheWeek: this.daysOfTheWeek,
        numberOfRows: Math.ceil(days.length / 7),
        days: days,
        month: this.month.format('MMMM'),
        year: this.month.year(),
        eventsThisMonth: this.eventsThisMonth,
        eventsLastMonth: this.eventsLastMonth,
        eventsNextMonth: this.eventsNextMonth,
        extras: this.options.extras
      };
  
      // render the calendar with the data above & bind events to its elements
      if(!this.options.render) {
        this.calendarContainer.html(this.compiledClndrTemplate(data));
      } else {
        this.calendarContainer.html(this.options.render.apply(this, [data]));
      }
  
      // if there are constraints, we need to add the 'inactive' class to the controls
      if(this.options.constraints) {
        // in the interest of clarity we're just going to remove all inactive classes and re-apply them each render.
        for(target in this.options.targets) {
          if(target != this.options.targets.day) {
            this.element.find('.' + this.options.targets[target]).toggleClass('inactive', false);
          }
        }
  
        var start = null;
        var end = null;
  
        if(this.options.constraints.startDate) {
          start = moment(this.options.constraints.startDate);
        }
        if(this.options.constraints.endDate) {
          end = moment(this.options.constraints.endDate);
        }
        // deal with the month controls first.
        // are we at the start month?
        if(start && this.month.isSame( start, 'month' )) {
          this.element.find('.' + this.options.targets.previousButton).toggleClass('inactive', true);
        }
        // are we at the end month?
        if(end && this.month.isSame( end, 'month' )) {
          this.element.find('.' + this.options.targets.nextButton).toggleClass('inactive', true);
        }
        // what's last year looking like?
        if(start && moment(start).subtract('years', 1).isBefore(moment(this.month).subtract('years', 1)) ) {
          this.element.find('.' + this.options.targets.previousYearButton).toggleClass('inactive', true);
        }
        // how about next year?
        if(end && moment(end).add('years', 1).isAfter(moment(this.month).add('years', 1)) ) {
          this.element.find('.' + this.options.targets.nextYearButton).toggleClass('inactive', true);
        }
        // today? we could put this in init(), but we want to support the user changing the constraints on a living instance.
        if(( start && start.isAfter( moment(), 'month' ) ) || ( end && end.isBefore( moment(), 'month' ) )) {
          this.element.find('.' + this.options.targets.today).toggleClass('inactive', true);
        }
      }
  
  
      if(this.options.doneRendering) {
        this.options.doneRendering.apply(this, []);
      }
    };
  
    Clndr.prototype.bindEvents = function() {
      var $container = $(this.element);
      var self = this;
  
      // target the day elements and give them click events
      $container.on('click', '.'+this.options.targets.day, function(event) {
        if(self.options.clickEvents.click) {
          var target = self.buildTargetObject(event.currentTarget, true);
          self.options.clickEvents.click.apply(self, [target]);
        }
        // if adjacentDaysChangeMonth is on, we need to change the month here.
        if(self.options.adjacentDaysChangeMonth) {
          if($(event.currentTarget).is(".last-month")) {
            self.backActionWithContext(self);
          } else if($(event.currentTarget).is(".next-month")) {
            self.forwardActionWithContext(self);
          }
        }
      });
      // target the empty calendar boxes as well
      $container.on('click', '.'+this.options.targets.empty, function(event) {
        if(self.options.clickEvents.click) {
          var target = self.buildTargetObject(event.currentTarget, false);
          self.options.clickEvents.click.apply(self, [target]);
        }
        if(self.options.adjacentDaysChangeMonth) {
          if($(event.currentTarget).is(".last-month")) {
            self.backActionWithContext(self);
          } else if($(event.currentTarget).is(".next-month")) {
            self.forwardActionWithContext(self);
          }
        }
      });
  
      // bind the previous, next and today buttons
      $container
        .on('click', '.'+this.options.targets.previousButton, { context: this }, this.backAction)
        .on('click', '.'+this.options.targets.nextButton, { context: this }, this.forwardAction)
        .on('click', '.'+this.options.targets.todayButton, { context: this }, this.todayAction)
        .on('click', '.'+this.options.targets.nextYearButton, { context: this }, this.nextYearAction)
        .on('click', '.'+this.options.targets.previousYearButton, { context: this }, this.previousYearAction);
    }
  
    // If the user provided a click callback we'd like to give them something nice to work with.
    // buildTargetObject takes the DOM element that was clicked and returns an object with
    // the DOM element, events, and the date (if the latter two exist). Currently it is based on the id,
    // however it'd be nice to use a data- attribute in the future.
    Clndr.prototype.buildTargetObject = function(currentTarget, targetWasDay) {
      // This is our default target object, assuming we hit an empty day with no events.
      var target = {
        element: currentTarget,
        events: [],
        date: null
      };
      // did we click on a day or just an empty box?
      if(targetWasDay) {
        var dateString;
  
        // Our identifier is in the list of classNames. Find it!
        var classNameIndex = currentTarget.className.indexOf('calendar-day-');
        if(classNameIndex !== 0) {
          // our unique identifier is always 23 characters long.
          // If this feels a little wonky, that's probably because it is.
          // Open to suggestions on how to improve this guy.
          dateString = currentTarget.className.substring(classNameIndex + 13, classNameIndex + 23);
          target.date = moment(dateString);
        } else {
          target.date = null;
        }
  
        // do we have events?
        if(this.options.events) {
          // are any of the events happening today?
          if(this.options.multiDayEvents) {
            target.events = $.makeArray( $(this.options.events).filter( function() {
              // filter the dates down to the ones that match.
              return ( ( target.date.isSame(this._clndrStartDateObject, 'day') || target.date.isAfter(this._clndrStartDateObject, 'day') ) &&
                ( target.date.isSame(this._clndrEndDateObject, 'day') || target.date.isBefore(this._clndrEndDateObject, 'day') ) );
            }) );
          } else {
            target.events = $.makeArray( $(this.options.events).filter( function() {
              // filter the dates down to the ones that match.
              return this._clndrDateObject.format('YYYY-MM-DD') == dateString;
            }) );
          }
        }
      }
  
      return target;
    }
  
    // the click handlers in bindEvents need a context, so these are wrappers
    // to the actual functions. Todo: better way to handle this?
    Clndr.prototype.forwardAction = function(event) {
      var self = event.data.context;
      self.forwardActionWithContext(self);
    };
  
    Clndr.prototype.backAction = function(event) {
      var self = event.data.context;
      self.backActionWithContext(self);
    };
  
    // These are called directly, except for in the bindEvent click handlers,
    // where forwardAction and backAction proxy to these guys.
    Clndr.prototype.backActionWithContext = function(self) {
      // before we do anything, check if there is an inactive class on the month control.
      // if it does, we want to return and take no action.
      if(self.element.find('.' + self.options.targets.previousButton).hasClass('inactive')) {
        return;
      }
  
      // is subtracting one month going to switch the year?
      var yearChanged = !self.month.isSame( moment(self.month).subtract('months', 1), 'year');
      self.month.subtract('months', 1);
  
      self.render();
  
      if(self.options.clickEvents.previousMonth) {
        self.options.clickEvents.previousMonth.apply( self, [moment(self.month)] );
      }
      if(self.options.clickEvents.onMonthChange) {
        self.options.clickEvents.onMonthChange.apply( self, [moment(self.month)] );
      }
      if(yearChanged) {
        if(self.options.clickEvents.onYearChange) {
          self.options.clickEvents.onYearChange.apply( self, [moment(self.month)] );
        }
      }
    };
  
    Clndr.prototype.forwardActionWithContext = function(self) {
      // before we do anything, check if there is an inactive class on the month control.
      // if it does, we want to return and take no action.
      if(self.element.find('.' + self.options.targets.nextButton).hasClass('inactive')) {
        return;
      }
  
      // is adding one month going to switch the year?
      var yearChanged = !self.month.isSame( moment(self.month).add('months', 1), 'year');
      self.month.add('months', 1);
  
      self.render();
  
      if(self.options.clickEvents.nextMonth) {
        self.options.clickEvents.nextMonth.apply(self, [moment(self.month)]);
      }
      if(self.options.clickEvents.onMonthChange) {
        self.options.clickEvents.onMonthChange.apply(self, [moment(self.month)]);
      }
      if(yearChanged) {
        if(self.options.clickEvents.onYearChange) {
          self.options.clickEvents.onYearChange.apply( self, [moment(self.month)] );
        }
      }
    };
  
    Clndr.prototype.todayAction = function(event) {
      var self = event.data.context;
  
      // did we switch months when the today button was hit?
      var monthChanged = !self.month.isSame(moment(), 'month');
      var yearChanged = !self.month.isSame(moment(), 'year');
  
      self.month = moment().startOf('month');
  
      // fire the today event handler regardless of whether the month changed.
      if(self.options.clickEvents.today) {
        self.options.clickEvents.today.apply( self, [moment(self.month)] );
      }
  
      if(monthChanged) {
        // no need to re-render if we didn't change months.
        self.render();
  
        self.month = moment();
        // fire the onMonthChange callback
        if(self.options.clickEvents.onMonthChange) {
          self.options.clickEvents.onMonthChange.apply( self, [moment(self.month)] );
        }
        // maybe fire the onYearChange callback?
        if(yearChanged) {
          if(self.options.clickEvents.onYearChange) {
            self.options.clickEvents.onYearChange.apply( self, [moment(self.month)] );
          }
        }
      }
    };
  
    Clndr.prototype.nextYearAction = function(event) {
      var self = event.data.context;
      // before we do anything, check if there is an inactive class on the month control.
      // if it does, we want to return and take no action.
      if(self.element.find('.' + self.options.targets.nextYearButton).hasClass('inactive')) {
        return;
      }
  
      self.month.add('years', 1);
      self.render();
  
      if(self.options.clickEvents.nextYear) {
        self.options.clickEvents.nextYear.apply( self, [moment(self.month)] );
      }
      if(self.options.clickEvents.onMonthChange) {
        self.options.clickEvents.onMonthChange.apply( self, [moment(self.month)] );
      }
      if(self.options.clickEvents.onYearChange) {
        self.options.clickEvents.onYearChange.apply( self, [moment(self.month)] );
      }
    };
  
    Clndr.prototype.previousYearAction = function(event) {
      var self = event.data.context;
      // before we do anything, check if there is an inactive class on the month control.
      // if it does, we want to return and take no action.
      if(self.element.find('.' + self.options.targets.previousYear).hasClass('inactive')) {
        return;
      }
  
      self.month.subtract('years', 1);
      self.render();
  
      if(self.options.clickEvents.previousYear) {
        self.options.clickEvents.previousYear.apply( self, [moment(self.month)] );
      }
      if(self.options.clickEvents.onMonthChange) {
        self.options.clickEvents.onMonthChange.apply( self, [moment(self.month)] );
      }
      if(self.options.clickEvents.onYearChange) {
        self.options.clickEvents.onYearChange.apply( self, [moment(self.month)] );
      }
    };
  
    Clndr.prototype.forward = function(options) {
      this.month.add('months', 1);
      this.render();
      if(options && options.withCallbacks) {
        if(this.options.clickEvents.onMonthChange) {
          this.options.clickEvents.onMonthChange.apply( this, [moment(this.month)] );
        }
  
        // We entered a new year
        if (this.month.month() === 0 && this.options.clickEvents.onYearChange) {
          this.options.clickEvents.onYearChange.apply( this, [moment(this.month)] );
        }
      }
  
      return this;
    }
  
    Clndr.prototype.back = function(options) {
      this.month.subtract('months', 1);
      this.render();
      if(options && options.withCallbacks) {
        if(this.options.clickEvents.onMonthChange) {
          this.options.clickEvents.onMonthChange.apply( this, [moment(this.month)] );
        }
  
        // We went all the way back to previous year
        if (this.month.month() === 11 && this.options.clickEvents.onYearChange) {
          this.options.clickEvents.onYearChange.apply( this, [moment(this.month)] );
        }
      }
  
      return this;
    }
  
    // alternate names for convenience
    Clndr.prototype.next = function(options) {
      this.forward(options);
      return this;
    }
  
    Clndr.prototype.previous = function(options) {
      this.back(options);
      return this;
    }
  
    Clndr.prototype.setMonth = function(newMonth, options) {
      // accepts 0 - 11 or a full/partial month name e.g. "Jan", "February", "Mar"
      this.month.month(newMonth);
      this.render();
      if(options && options.withCallbacks) {
        if(this.options.clickEvents.onMonthChange) {
          this.options.clickEvents.onMonthChange.apply( this, [moment(this.month)] );
        }
      }
      return this;
    }
  
    Clndr.prototype.nextYear = function(options) {
      this.month.add('year', 1);
      this.render();
      if(options && options.withCallbacks) {
        if(this.options.clickEvents.onYearChange) {
          this.options.clickEvents.onYearChange.apply( this, [moment(this.month)] );
        }
      }
      return this;
    }
  
    Clndr.prototype.previousYear = function(options) {
      this.month.subtract('year', 1);
      this.render();
      if(options && options.withCallbacks) {
        if(this.options.clickEvents.onYearChange) {
          this.options.clickEvents.onYearChange.apply( this, [moment(this.month)] );
        }
      }
      return this;
    }
  
    Clndr.prototype.setYear = function(newYear, options) {
      this.month.year(newYear);
      this.render();
      if(options && options.withCallbacks) {
        if(this.options.clickEvents.onYearChange) {
          this.options.clickEvents.onYearChange.apply( this, [moment(this.month)] );
        }
      }
      return this;
    }
  
    Clndr.prototype.setEvents = function(events) {
      // go through each event and add a moment object
      if(this.options.multiDayEvents) {
        this.options.events = this.addMultiDayMomentObjectsToEvents(events);
      } else {
        this.options.events = this.addMomentObjectToEvents(events);
      }
  
      this.render();
      return this;
    };
  
    Clndr.prototype.addEvents = function(events) {
      // go through each event and add a moment object
      if(this.options.multiDayEvents) {
        this.options.events = $.merge(this.options.events, this.addMultiDayMomentObjectsToEvents(events));
      } else {
        this.options.events = $.merge(this.options.events, this.addMomentObjectToEvents(events));
      }
  
      this.render();
      return this;
    };
  
    Clndr.prototype.addMomentObjectToEvents = function(events) {
      var self = this;
      var i = 0, l = events.length;
      for(i; i < l; i++) {
        // stuff a _clndrDateObject in each event, which really, REALLY should not be
        // overriding any existing object... Man that would be weird.
        events[i]._clndrDateObject = moment( events[i][self.options.dateParameter] );
      }
      return events;
    }
  
    Clndr.prototype.addMultiDayMomentObjectsToEvents = function(events) {
      var self = this;
      var i = 0, l = events.length;
      for(i; i < l; i++) {
        events[i]._clndrStartDateObject = moment( events[i][self.options.multiDayEvents.startDate] );
        events[i]._clndrEndDateObject = moment( events[i][self.options.multiDayEvents.endDate] );
      }
      return events;
    }
  
    Clndr.prototype.calendarDay = function(options) {
      var defaults = { day: "", classes: this.options.targets.empty, events: [], date: null };
      return $.extend({}, defaults, options);
    }
  
    $.fn.clndr = function(options) {
      if(this.length === 1) {
        if(!this.data('plugin_clndr')) {
          var clndr_instance = new Clndr(this, options);
          this.data('plugin_clndr', clndr_instance);
          return clndr_instance;
        }
      } else if(this.length > 1) {
        throw new Error("CLNDR does not support multiple elements yet. Make sure your clndr selector returns only one element.");
      }
    }
  
  })( jQuery, window, document );
  