function chk_all(input_name,label) {

//alert(obj.id);
	var str = document.getElementById(label).innerHTML;
	str = (str == "Выбрать все" ? "Отменить все" : "Выбрать все");
	document.getElementById(label).innerHTML = str;

	var status = document.getElementById('status').checked;
	var check = document.getElementsByName(input_name);
	for (var i=0; i<check.length; i++) {
		check[i].checked = status;
		}
	}
///////////////////////////////////////

function chk_all_2(input_name,obj) {

	var str = document.getElementById(obj.id).value;
	str = (str == "+" ? "-" : "+");
	document.getElementById(obj.id).value = str;

	status = (status == "checked" ? "" : "checked");
	var check = document.getElementsByName(input_name);
	for (var i=0; i<check.length; i++) {
		check[i].checked = status;
		}
	}