function Registrazione()
{
	if (! ControllaCampiObbligatori())
		return;
	
	alert("registration...");
}

function ControllaCampiObbligatori()
{
	var name = document.getElementById("name");
	var surname = document.getElementById("surname");
	var mail = document.getElementById("mail");
	var username = document.getElementById("username");
	var password = document.getElementById("password");
	var confirmPassword = document.getElementById("confirmPassword");
	
	if (name.value == "")
	{
		alert("Warning: you must specify the Name field!");
		name.focus();
		return false;
	}
	
	if (surname.value == "")
	{
		alert("Warning: you must specify the Surname field!");
		surname.focus();
		return false;
	}
	
	if (mail.value == "")
	{
		alert("Warning: you must specify the Mail field!");
		mail.focus();
		return false;
	}
		
	if (username.value == "")
	{
		alert("Warning: you must specify the Username field!");
		username.focus();
		return false;
	}
		
	if (password.value == "")
	{
		alert("Warning: you must specify the Password field!");
		password.focus();
		return false;
	}
		
	if (confirmPassword.value == "")
	{
		alert("Warning: you must specify the Confirm Password field!");
		confirmPassword.focus();
		return false;
	}
	
	if (password.value != confirmPassword.value)
	{
		alert("Warning: the Password field must be equal to the Confirm Password field!");
		return false;
	}
	
	return true;
}