function subscribe(){
	var email = $("mailText").value;
	
	disableSubscribe();
	
	if(!is_email(email)){
		alert("invalid email");
		enableSubscribe();
		$("mailText").focus();
	} else {
		setTimeout("enableSubscribe()", 5000);
		url = "ml_subscribe.php?email="+email;
		getAjaxMsg(url);
	}
}

function unsubscribe(){
	var email = $("mailText").value;
	
	disableUnsubscribe();
	
	if(!is_email(email)){
		alert("invalid email");
		enableUnsubscribe();
		$("mailText").focus();		
	} else {
		setTimeout("enableUnsubscribe()", 5000);
		url = "ml_unsubscribe.php?email="+email;
		getAjaxMsg(url);
	}
}

function disableSubscribe(){
	$("mailSubscribe").innerHTML = "...";
}

function disableUnsubscribe(){
	$("mailUnsubscribe").innerHTML = "...";
}

function enableSubscribe(){
	$("mailSubscribe").innerHTML = "<a onclick='subscribe()'>subscribe</a>";
}

function enableUnsubscribe(){
	$("mailUnsubscribe").innerHTML = '<a onclick="unsubscribe()">click here</a>';
}