var xmlhttpp;
function sendInvitation()
{
    var email=document.getElementById("invite").value;
    xmlhttpp=GetXmlHttpObjectt();
    if (xmlhttpp==null)
    {
        alert ("Your browser does not support XMLHTTP!");
        return;
    }
    var uri="sendInvitation.php";
    uri=uri+"?email="+email;
    xmlhttpp.onreadystatechange=stateChangedd;
    xmlhttpp.open("GET",uri,true);
    xmlhttpp.send(null);
}

function GetXmlHttpObjectt()
{
    if (window.XMLHttpRequest)
    {
        // code for IE7+, Firefox, Chrome, Opera, Safari
        return new XMLHttpRequest();
    }
    if (window.ActiveXObject)
    {
        // code for IE6, IE5
        return new ActiveXObject("Microsoft.XMLHTTP");
    }
    return null;
}

function stateChangedd()
{
    if (xmlhttpp.readyState==4)
    {
        //alert("inside if");
        var responsee = xmlhttpp.responseText;
        document.getElementById('msg').innerHTML=responsee;
    }
}