function LookUpEmail(email) {
	//alert("Your email address is: "+email);
	url  = "http://www.point-of-reference.com/mm/app_logic/LookUpUser.php";
	loadXMLDoc(url,email);
}


function sendEmail(email)
{
	ab = "action=authenticate_user&email="+email;
	return ab;
}


var req;

function loadXMLDoc(url,email) 
{

    xmlMessage = sendEmail(email);
    //alert(xmlMessage);
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChange;
        req.open("POST", url, true);
        req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        req.send(xmlMessage);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
        	req.onreadystatechange = processReqChange;
            req.open("POST", url, true);
            req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
            req.send(xmlMessage);
        }
    }
}

//******************************************************************************
// processReqChange() checks for, receives and parses the XML response.
function processReqChange() 
{
    // only if req shows "complete"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
        //alert('200');
            response = req.responseXML.documentElement;
            method = response.getElementsByTagName('method')[0].firstChild.data;
			if(method == 'redirectToLongForm') {
				RedirectLocation = response.getElementsByTagName('RedirectLocation')[0].firstChild.data;
				eval(method + '(RedirectLocation)');
			}
			else if(method == 'postToMM') {
				fname = response.getElementsByTagName('fname')[0].firstChild.data;
				lname = response.getElementsByTagName('lname')[0].firstChild.data;
				company = response.getElementsByTagName('company')[0].firstChild.data;
				title = response.getElementsByTagName('title')[0].firstChild.data;
				revenue = response.getElementsByTagName('revenue')[0].firstChild.data;
				email = response.getElementsByTagName('email')[0].firstChild.data;
				eval(method + '(fname,lname,company,title,revenue,email)');
			}
        } else {
            alert("There was a problem retrieving the XML data:\n" + req.statusText);
        }
    }
}

function redirectToLongForm(RedirectLocation) {
	document.location.href = RedirectLocation;
}

function postToMM(fname,lname,company,title,revenue,email) {
	document.forms[1].fname.value = fname;
	document.forms[1].lname.value = lname;
	document.forms[1].company.value = company;
	document.forms[1].title.value = title;
	document.forms[1].revenue.value = revenue;
	document.forms[1].email.value = email;
	document.forms[1].submit();
}