function gravarEmailNewsletter(txtEmail)
{	

	var xmlhttp = null;

		try
		{
			xmlhttp= new XMLHttpRequest(); // FF/Safari/Opera
		}	
		catch(e1)
		{
			try
			{
				xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); //activeX para IE5.5+/MSXML2+
			}
			catch(e2)
			{
				try
				{
					xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); //activeX para IE5/MSXML1
				}
				catch(e3)
				{
					xmlhttp = null;
				}
			}
		}
		
		if(xmlhttp == null)
		{
			alert("Seu navegador não dá suporte a AJAX.");
			return (false)
		}
		else
		{
			xmlhttp.onreadystatechange=function()
			{
				if (xmlhttp.readyState==4)
				{
					var texto= unescape(xmlhttp.responseText);
					document.getElementById("SpaMSG").innerHTML="<img src=imgConteudo/carregando.gif border=0 /> <font color=green size=2> <b>Ok, cadastrado.</b></font>";	
					
				}
			}

			xmlhttp.open("GET",'insertEmailNewsletter.asp?e='+ txtEmail,true);
			xmlhttp.send(null);	
		}

	return (true);
	
}