function checkit()
{
	box = document.enciclopedia.chiave;
	if (!box.value)
	{
         alert('Specificare almeno un termine di ricerca!');
	 box.focus()
	 return false;
		}
	return true;
	}
function popupWindow(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=450,height=300,screenX=150,screenY=150,top=150,left=150')
}
function popupScheda(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=800,height=400,screenX=150,screenY=150,top=150,left=150')
}
function popupWhere(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=520,height=710,screenX=150,screenY=150,top=150,left=150')
}
function checkit()
{
	box = document.enciclopedia.chiave;
	if (!box.value)
	{
         alert('Specificare almeno un termine di ricerca!');
	 box.focus()
	 return false;
		}
	return true;
	}