var POS;
function loadXMLPosDoc(url,posData) {
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        POS = new XMLHttpRequest();
        POS.onreadystatechange = processPosChange;
        POS.open("POST", url, false);
		POS.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        POS.send(posData);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        POS = new ActiveXObject("Microsoft.XMLHTTP");
        if (POS) {
            POS.onreadystatechange = processPosChange;
            POS.open("POST", url, false);
			pos.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
            POS.send(posData);
        }
    }
}

function grabPosXML (tagName) {
	return POS.responseXML.documentElement.getElementsByTagName(tagName)[0].childNodes[0].nodeValue;
}

function processPosChange() {
    // page loaded "complete"
    if (POS.readyState == 4) {
        // page is "OK"
        if (POS.status != 200) {
		alert('There were problems sending email. Please try again.');	
	}
    }
}