function mark_week(year,row,week_id,class_name) {
	var week = document.getElementsByName('y' + row + year + 'w' + week_id + 'd');
	for (var i = 0; i <= week.length - 1; i++) {
		week[i].className = ((week[i].className == 'full') ? 'full' : class_name);
	}
	if (document.getElementsByName('y' + row + year + 'w' + (week_id + 1) + 'd')[0]) {
		document.getElementsByName('y' + row + year + 'w' + (week_id + 1) + 'd')[0].className = ((document.getElementsByName('y' + row + year + 'w' + (week_id + 1) + 'd')[0].className == 'full') ? 'full' : class_name);
//		week[0].className = ((week[i].className == 'full') ? 'full' : class_name);
	}
}