function mark(num, tnum, notecounter) {
	var num_name = num;
	var tnum_name = tnum;
	var re = /([^\d]+)/;
	var num_name = num_name.match(re);
	var tnum_name = tnum_name.match(re);

	for (i=1; i<=notecounter; i++)
		document.getElementById(num_name[0] + i).className="passive";
	document.getElementById(tnum_name[0] + 0).innerHTML=document.getElementById(tnum).innerHTML;
	document.getElementById(num).className="active";
}

function mark_num(num, tnum, notecounter) {
	var num_name = num;
	var tnum_name = tnum;
	var re = /([^\d]+)/;
	var num_name = num_name.match(re);
	var tnum_name = tnum_name.match(re);

	for (i=1; i<=notecounter; i++)
		document.getElementById(num_name[0] + i).className="passive";
	document.getElementById(tnum_name[0] + 0).innerHTML=document.getElementById(tnum).innerHTML;
	document.getElementById(num).className="active";
}