function check1(frm)
	{
	var k = frm.elements['dis'].selectedIndex;
	if(frm.elements['dis'].options[k].value == '')
		{
		alert('Occorre specificare il Distretto');
		return false;
		}

	return true;
	}

function check2(frm)
	{
	var k = frm.elements['dis'].selectedIndex;
	if(frm.elements['dis'].options[k].value == '')
		{
		alert('Occorre specificare U.O.T.');
		return false;
		}

	return true;
	}