var xmlHttp;

function submitAddress() {

	userAddress = document.fMailingList.txtUserInput.value;
	xmlHttp		= getXmlHttpObject();
	url="/inc/mailing_list.php?ea=" + userAddress + "&sid=" + Math.random();

	if (xmlHttp==null) {
 		parent.document.getElementById("divMailingList").innerHTML="Error submitting email address. Your browser may be outdated."; 
 		return;
 	}	

	

	xmlHttp.onreadystatechange=stateChanged; 
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}




function stateChanged()  { 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") { 
 		parent.document.getElementById("divMailingList").innerHTML=xmlHttp.responseText; 
 	} 
}



function getXmlHttpObject() {

	var xmlHttp=null;
	
	try {
  		xmlHttp=new XMLHttpRequest();
 	} catch (e) {
  		try {
  			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  		} catch (e) {
  			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  		}
 	}

	return xmlHttp;
}