function postEmail() 
{
	var eaInput = document.subscribe.emailaddress;
	if (eaInput.value == '' || eaInput.value == 'Enter Your Email Address') 
	{
		alert("Please enter a valid email address.");
		eaInput.focus(); 
	} 
	else 
	{
		ea = eaInput.value;
		myurl = "http://www.sutterhome.com/email/index.php?emailaddress=" + ea;
		openWindow(myurl,450,510);
	}

	return false;
}