var pos; // variable for posting information
	
	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) {
				if ( grabPosXML("status") == 'NOTOK' ) { 
					alert('Problema ao enviar email! Tente novamente mais tarde!');
				}
			}
		}
	}