(function($) { 
   
	function calendarWidget(el, params)
  { 
		
		var now   = new Date();
		var thismonth = now.getMonth();
		var thisyear  = now.getYear() + 1900;
		
		var opts = {
			month: thismonth,
			year: thisyear,
            duration: 0,
            start_day: 0
		};
		
		$.extend(opts, params);
		
		if (params.culture == 'en')
      var monthNames = ['Null', 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
    else if (params.culture == 'ru')
      var monthNames = ['Null', 'Январь', 'Февраль', 'Март', 'Апрель', 'Май', 'Июнь', 'Июль', 'Август', 'Сентябрь', 'Октябрь', 'Ноябрь', 'Декабрь'];
		var dayNames = ['Su', 'Mo', 'Tu', 'Wn', 'Th', 'Fr', 'St'];
		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 += ('<div class="calendar-title"><span style="float:left;">'+monthNames[month]+'</span><span style="float:right;">'+year+'</span></div><div class="clear"></div>');
		//table += ('<div class="alpha grid_1" style="text-align:left;">'+monthNames[month]+'</div><div class="grid_1 omega" style="text-align:right;">'+year+'</div><div class="clear"></div>');
		// 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">');	

          // uncomment to display weekdays
          /*
		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-1,1);
    var firstDay=firstDayDate.getDay();
		
		var prev_days = getDaysInMonth(month,year);
    var firstDayDate=new Date(year,month-1,1);
    var firstDay=firstDayDate.getDay();
		
		var prev_m = month == 1 ? 12 : month-1;
		var prev_y = prev_m == 12 ? year - 1 : year;
		var prev_days = getDaysInMonth(prev_m, prev_y);
		
    firstDay = (firstDay == 0 && firstDayDate) ? 7 - 1 : firstDay - 1; //-1 = Monday - first day

		var i = 0;
    for (j=0;j<42;j++)
    {
			if ((j-firstDay+1) >= (opts.start_day) && --opts.duration >= 0 )
      {
        var selected = 'selected-day';
      }
      else {
        var selected = '';
      }

      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 '+selected+'"><span class="day">'+ i +'</span></td>');			 
      }
      else
      {
        table += ('<td class="current-month day'+(j-firstDay+1)+' '+selected+'"><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=[0,31,28,31,30,31,30,31,31,30,31,30,31];
		if ((month==2)&&(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);