try{
    xmlhttp = new XMLHttpRequest();
}catch(ee){
    try{
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    }catch(e){
        try{
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }catch(E){
            xmlhttp = false;
        }
    }
};

atual=0

function cadastrar_email(){ 
	var nome       = document.getElementById("nome").value;
	var email      = document.getElementById("email").value;

	var post = 'nome='+nome+'&email='+email;
	xmlhttp.open("POST","newsletter.php?banco=adicionar",true);
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
	xmlhttp.send(post);
	
	xmlhttp.onreadystatechange=function() {
	if (xmlhttp.readyState==4){
			alert(xmlhttp.responseText);
			if(xmlhttp.responseText=="Email cadastrado com sucesso") {
				conteudo('inicio.php');
			}
        }
    }
};

function deletar_email(){ 
	var nome       = document.getElementById("nome").value;
	var email      = document.getElementById("email").value;

	var post = 'nome='+nome+'&email='+email;
	xmlhttp.open("POST","newsletter_deletar.php?banco=deletar",true);
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
	xmlhttp.send(post);
	
	xmlhttp.onreadystatechange=function() {
	if (xmlhttp.readyState==4){
			alert(xmlhttp.responseText);
			if(xmlhttp.responseText=="Email deletado com sucesso") {
				conteudo('inicio.php');
			}
        }
    }
};