function set_slave_event(slave, master, formName)
{
	if(document.forms[formName])
	var formular = document.forms[formName];
	else
	var formular = document.getElementById(formName);
	
	if(formular.elements[master])
	var element = formular.elements[master];
	
	element.onchange = function() { slave_checked(slave, formular); };
	return element;
}

function slave_checked(slave, formular)
{
	if(formular.elements[slave])
	var element = formular.elements[slave];
	element.checked = true;
}