// ADD SUBSCRIBER_CB
// Called by the addsubscriber() php function after a subscriber was attempted added.
function addsubscriber_cb(success) {
	// TODO: Output a failure message if success == false.
	document.getElementById("subscribe").innerHTML = 'We have received your submission. Thank you.';
}


// ADD SUBSCRIBER
// Disables the subscribe form and calls the php addsubscriber() function.
function addsubscriber() {
	var t = document.getElementById("subscribeemail").value;
	if (t != '' && t != 'Your email'){
		document.getElementById("subscribebutton").disabled=true;
		document.getElementById("subscribeemail").disabled=true;
		x_addsubscriber(t, addsubscriber_cb);
	}
}


// FOCUS EMAIL
// Prepares the email input.
function focusemail(){
	document.getElementById('subscribeemail').style.color = '#000000';
	if (document.getElementById('subscribeemail').value == 'Your email'){
		document.getElementById('subscribeemail').value = '';
	}
}


// BLUR EMAIL
function bluremail(){
	document.getElementById('subscribeemail').style.color = '#999999';
	if (document.getElementById('subscribeemail').value == ''){
		document.getElementById('subscribeemail').value = 'Your email';	
	}	
}