$(document).bind( 'ready', calendar );
function calendar(){
$('#calendar_month, #calendar_year').change(function(){

  var year = document.getElementById('calendar_year');
    var month = document.getElementById('calendar_month');
	year.disabled = true;
	month.disabled = true;
    doRenewCalendar(month, year);
	

});
}
 function doRenewCalendar(month, year)
 {
$('#calendar_weeks').remove();
$('#menu .calendar').append('<p>Пожалуйста, подождите...</p>');
		$.ajax({url      : "/udata://catalog/calendar/?transform=modules/catalog.xsl&year="+year.value+"&month="+month.value,
					dataType: "html",
					success : function(data) {
							$('#menu .calendar p').remove();
							$('#menu .calendar').append(data);
								document.getElementById('calendar_year').disabled = false;
								document.getElementById('calendar_month').disabled = false;	
							}
					 });		
		
	
 }