var MSG_HANDLER_URL = "mailer.php";

var msgReq; //XML request
var responseDiv

function sendMessageOut(subject, body, from, div) {

	responseDiv = div;
	var url = MSG_HANDLER_URL + "?msgSubject=" + subject + "&msgBody=" + body + "&msgAddress=" + from;
 	
 	if (window.XMLHttpRequest){ 
		msgReq = new XMLHttpRequest();
    	msgReq.onreadystatechange = handleMsgResponse;
    	msgReq.open("GET", url, true);
    	msgReq.send(null);
   	} else if(window.ActiveXObject){ 
        msgReq = new ActiveXObject("Microsoft.XMLHTTP"); 
        if(msgReq){ 
         	msgReq.onreadystatechange = handleMsgResponse
            msgReq.open("GET", url, true);
            msgReq.send();
        }
    }
}

function handleMsgResponse() {
	if(msgReq.readyState == 4){   
    	if(msgReq.status == 200){
            responseDiv.innerHTML = msgReq.responseText;
       	} else {
         	responseDiv.innerHTML = "Error Status: " + msgReq.status;
        }
 	}
}