var http_request = false;

function sendcontactus()
{
    var siteaddress = document.getElementById("siteaddr").value;
    var yourname = document.getElementById("yname").value;
    var youremail = document.getElementById("email").value;
    var phone = document.getElementById("phone").value;
    var message = document.getElementById("message").value;
    var vcode = document.getElementById("vcode").value;
    var button = document.getElementById("contactsubmit").value;

    var poststr = "yname=" + encodeURI(yourname) +
                "&email=" + encodeURI(youremail) +
                "&siteaddr=" + encodeURI(siteaddress) +
                "&phone=" + encodeURI(phone) +
                "&message=" + encodeURI(message) +
                "&vcode=" + encodeURI(vcode) +
                "&submit=" + encodeURI(button);

    requestquote_makePOSTRequest('ajax/contact-us.php', poststr);
}

function requestquote_makePOSTRequest(url, parameters)
{
    http_request = false;
    if (window.XMLHttpRequest)
    { // Mozilla, Safari,...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType)
        {
            http_request.overrideMimeType('text/xml');
        }
    }
    else if (window.ActiveXObject)
    { // IE
        try
        {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e)
        {
            try
            {
                http_request = new ActiveXObject("Microsoft.XMLHTTP");
            }
            catch (e) {}
        }
    }
    if (!http_request)
    {
        alert('Cannot create XMLHTTP instance');
        return false;
    }

    http_request.onreadystatechange = function()
    {
        if (http_request.readyState == 4)
        {
            if (http_request.status == 200)
            {
                var obj = document.getElementById('contactus');
                obj.innerHTML = http_request.responseText;
            }
            else
            {
                //alert('There was a problem with the request.');
            }
        }
    }
    http_request.open('POST',url, true);
    http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http_request.setRequestHeader("Content-length", parameters.length);
    http_request.setRequestHeader("Connection", "close");
    http_request.send(parameters);
}