var req;

function loadXMLDocN(url,valor)
{
	req = null;
    // Procura por um objeto nativo (Mozilla/Safari)
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChangeN;
        req.open("GET", url+'?email='+valor, true);
        req.send(null);
    // Procura por uma versao ActiveX (IE)
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = processReqChangeN;
            req.open("GET", url+'?email='+valor, true);
            req.send();
        }
    }
}


function processReqChangeN()
{
    // apenas quando o estado for "completado"
    if (req.readyState == 4) {
        // apenas se o servidor retornar "OK"
        if (req.status == 200) {
           
			document.getElementById('atualizarN').innerHTML = req.responseText;
			
        } else {
            alert("Houve um problema ao obter os dados1:\n" + req.statusText);
        }
    }
}




function newsletter(valor)
{
	if(valor == 1)
	{
		valor = document.getElementById("emailNewsletter").value;
		document.getElementById('atualizarN').innerHTML = '<div align="center"><img src="images/loading.gif"></div>';
		loadXMLDocN("xtNewsletter.php",valor);
	}
	else
	{
		document.getElementById('atualizarN').innerHTML = ' <input name="email" type="text" class="input1" id="emailNewsletter" value="E-mail" onclick="if(this.value == \'E-mail\') this.value = \'\'" onblur="if(this.value == \'\') this.value = \'E-mail\';" />				  <input name="enviar" type="image" id="enviar" style="margin-bottom:-6px;" src="imagens/bt-ok.jpg" width="30" height="24" border="0" class="restrictButton" onclick="newsletter(1)" />';	
	}
}