function checkSub()
{
	var nameField = document.getElementById('name');
	var emailField = document.getElementById('email');
	var retVal = true;
	
	if (nameField.value == '' && retVal)
	{
		alert('You must provide your name to subscribe.');
		retVal = false;
	}
	if (emailField.value == '' && retVal)
	{
		alert('You must provide your email address to subscribe.');
		retVal = false;
	}
	
	return retVal;
}