function show(obj){
	var block = document.getElementById(obj);

	if (block.style.display == "block") block.style.display = "none";
	else block.style.display = "block";
}

function show2(obj, obj2){
	var block = document.getElementById(obj);
	var block2 = document.getElementById(obj2);
	var bl = document.getElementById("exch");
	var bl2 = document.getElementById("exch2");

	if (block.style.display == "block"){
		block.style.display = "none";
		block2.value = 0;
	}else{
		bl.innerHTML = "Выберите адресата";
		bl2.innerHTML = "Выберите адресата";

		block.style.display = "block";
	}
}

function checkche(obj,obj2){
	var form = document.forms[obj];
	var elem = document.getElementById(obj2);
	var j = 0;
	for (i=0;i<form.length;i++){
		with(form){
			if ((elements[i].type == "checkbox") && (elements[i].checked == true) && (elements[i].id != obj2)){
				j++;
				//alert(elements[i].id);
				//alert(elements[i].name);
				break;
			}
		}
	}
	if (j == 0){
		elem.checked = false;
		return false;
	}else{
		elem.checked = true;
		return true;
	}
	//alert(j);
}