function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function is_valid_email(email) { 
	if (email.search(/^[^@]{1,64}@[^@]{1,255}$/) != 0) { 
		return false; 
	} 
	email_array = email.split('@'); 
	local_array = email_array[0].split("."); 
	for (i = 0; i < local_array.length; i++) { 
		if (local_array[i].search("^(([A-Za-z0-9!#$%&'*+/=?^_`{|}~-][A-Za-z0-9!#$%&'*+/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$")!=0) { 
			return false; 
		} 
	} 
	if (email_array[1].search("^\[?[0-9\.]+\]?$")!=0) { 
		domain_array = email_array[1].split("."); 
		if (domain_array.length < 2) { 
			return false; 
		} 
		for (i = 0; i < domain_array.length; i++) { 
			if (domain_array[i].search("^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]+))$") != 0) { 
				return false; 
			} 
		} 
	} 
	return true; 
} 

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.id; if ((val=val.value)!="") {
	  if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
		if (!is_valid_email(val)) errors+='- '+nm+' deve essere un indirizzo e-mail valido.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' deve essere un numero compreso tra '+min+' e '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' \u00e8 obbligatorio.\n'; }
  } if (errors) alert('Si \u00e8 verificato il seguente errore:\n'+errors);
  document.MM_returnValue = (errors == '');
}