function mesePrecedente(month, year){
	if(month == 1){
		--year;
		month = 13;
	}
	//document.location.href = '<?=$_SERVER['PHP_SELF'];?>?month='+(month-1)+'&year='+year;
	$("#calendario").load("_include/calendario.php?month="+(month-1)+"&year="+year);
}

function meseSuccessivo(month, year){
	if(month == 12){
		++year;
		month = 0;
	}
	//document.location.href = '<?=$_SERVER['PHP_SELF'];?>?month='+(month+1)+'&year='+year;
	$("#calendario").load("_include/calendario.php?month="+(month+1)+"&year="+year);
}