function mailingListSubscribe(addr) {
	
	var req 
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
	}
	else {
		var req = new ActiveXObject("MSXML2.XMLHTTP.3.0");
	}
	var theurl = '/mail.php?addr='+addr;
	req.open('GET', theurl, true);
	req.onreadystatechange = function (aEvt) {
	if (req.readyState == 4) {
		if(req.status == 200){
			document.getElementById('mailingListBlock').innerHTML=req.responseText
		}
		  else {}
  }
};
req.send(null); 
}