(function($) {

	function calendarWidget(el, params)
  {

		var now   = new Date();
		var thismonth = now.getMonth();
		var thisyear  = now.getYear() + 1900;

		var opts = {
			month: thismonth,
			year: thisyear,
      highlightedDays: []
		};

		$.extend(opts, params);

		var monthNames = ['Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin', 'Juillet', 'Août', 'Septembre', 'Octobre', 'Novembre', 'Décembre'];
		var dayNames = ['Dim', 'Lun', 'Mar', 'Mer', 'Jeu', 'Ven', 'Sam'];
		month = i = parseInt(opts.month);
		year = parseInt(opts.year);
		var m = 0;
		var table = '';

    // next month
    if (month == 11) {
      var next_month = '<a href="?month=' + 1 + '&amp;year=' + (year + 1) + '" title="' + monthNames[0] + ' ' + (year + 1) + '">' + monthNames[0] + ' ' + (year + 1) + '</a>';
    } else {
      var next_month = '<a href="?month=' + (month + 2) + '&amp;year=' + (year) + '" title="' + monthNames[month + 1] + ' ' + (year) + '">' + monthNames[month + 1] + ' ' + (year) + '</a>';
    }

    // previous month
    if (month == 0) {
      var prev_month = '<a href="?month=' + 12 + '&amp;year=' + (year - 1) + '" title="' + monthNames[11] + ' ' + (year - 1) + '">' + monthNames[11] + ' ' + (year - 1) + '</a>';
    } else {
      var prev_month = '<a href="?month=' + (month) + '&amp;year=' + (year) + '" title="' + monthNames[month - 1] + ' ' + (year) + '">' + monthNames[month - 1] + ' ' + (year) + '</a>';
    }

    //table += ('<h2 id="current-month">'+monthNames[month]+'</h2>');
    // uncomment the following lines if you'd like to display calendar month based on 'month' and 'view' paramaters from the URL
    //table += ('<div class="nav-prev">'+ prev_month +'</div>');
    //table += ('<div class="nav-next">'+ next_month +'</div>');
    table += ('<table class="calendar-month " ' +'id="calendar-month'+i+' " cellspacing="0">');

    table += '<tr>';

    for (d=0; d<7; d++) {
      table += '<th class="weekday">' + dayNames[d] + '</th>';
    }

    table += '</tr>';

    var days = getDaysInMonth(month,year);
          var firstDayDate=new Date(year,month,1);
          var firstDay=firstDayDate.getDay();

    var prev_days = getDaysInMonth(month,year);
          var firstDayDate=new Date(year,month,1);
          var firstDay=firstDayDate.getDay();

    var prev_m = month == 0 ? 11 : month-1;
    var prev_y = prev_m == 11 ? year - 1 : year;
    var prev_days = getDaysInMonth(prev_m, prev_y);
    firstDay = (firstDay == 0 && firstDayDate) ? 7 : firstDay;

    var i = 0;
    for (j=0;j<42;j++)
    {
      if ((j<firstDay))
      {
        table += ('<td class="other-month"><span class="day">'+ (prev_days-firstDay+j+1) +'</span></td>');
      }
      else if ((j>=firstDay+getDaysInMonth(month,year)))
      {
        i = i+1;
        table += ('<td class="other-month"><span class="day">'+ i +'</span></td>');
      }
      else
      {
        var dayCellContent = j-firstDay+1;
        var cssClass = '';
        if(dayCellContent < now.getDay())
        {
          cssClass = 'past-day';
        }
        else if(dayCellContent == now.getDay())
        {
          cssClass = 'current-day';
        }
        else
        {
          cssClass = 'future-day';
        }
        if (dayCellContent < 10)
        {
          dayCellContent = '0'+dayCellContent;
        }
        var monthCellContent = month + 1;
        if (monthCellContent < 10)
        {
          monthCellContent = '0'+monthCellContent;
        }

        var dmyDate = year+'-'+monthCellContent+'-'+(dayCellContent);
        
        if(jQuery.inArray(dmyDate, opts.highlightedDays) > -1)
        {
          table += ('<td class="current-month day'+(j-firstDay+1)+' '+cssClass+'"><a href="#'+dmyDate+'"><span class="day">'+(j-firstDay+1)+'</span></a></td>');
        }
        else
        {
          table += ('<td class="current-month day'+(j-firstDay+1)+' '+cssClass+'"><span class="day">'+(j-firstDay+1)+'</span></td>');
        }

      }
      if (j%7==6)  table += ('</tr>');
    }

    table += ('</table>');

    el.html(table);
	}

	function getDaysInMonth(month,year)  {
		var daysInMonth=[31,28,31,30,31,30,31,31,30,31,30,31];
		if ((month==1)&&(year%4==0)&&((year%100!=0)||(year%400==0))){
		  return 29;
		}else{
		  return daysInMonth[month];
		}
	}


	// jQuery plugin initialisation
	$.fn.calendarWidget = function(params) {
		calendarWidget(this, params);
		return this;
	};

})(jQuery);