function checkLoginForm(tf)
{
	if(tf.email.value.length < 8)
	{
		alert("Please enter your email address.");
		tf.email.focus();
		return false;
	}
	if(tf.password.value.length < 6)
	{
		alert("Please enter your password.  It must be at least 6 characters long.");
		tf.password.focus();
		return false;
	}	

	return true;
}