var xmlhttp
function voltar() {
	document.getElementById("caixa_login").innerHTML = ' \
	<div id="cx_login" style="display:block"> \
		<div id="login_msg" style="font-family:Verdana, Arial, Helvetica, sans-serif; color:#006600; font-weight:bold; font-size:12px; position:absolute; top: 12px; left:16px;">Prezado cliente, fa&ccedil;a seu login abaixo:</div> \
			<form method="post" name="form_login" action="login.php?do=login" onsubmit="return efetua_login(this)"> \
				<input name="strMail" type="text" style="border:none 0px #FFFFFF; width:140px; top:36px; left: 16px; position:absolute; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; padding:2px" /> \
				<input name="strSenha" type="password" style="border:none 0px #FFFFFF; width:140px; top:36px; left: 186px; position:absolute; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; padding:2px" /> \
				<div id="resposta"> \
					<input type="image" src="images/header_login_ok.gif" style="top:33px; left: 345px; position:absolute; cursor:pointer" /> \
				</div> \
			</form> \
		<div style="font-family:Verdana, Arial, Helvetica, sans-serif; color:#333333; font-size:10px; position:absolute; top:60px; left:16px;">&raquo; Novo no Delivery Ragazzo? <a href="cadastro.php">Clique aqui para se cadastrar</a>.<br /> \
		&raquo; Caso voc&ecirc; tenha esquecido sua senha, <a href="recupsenha.php">clique aqui</a>.</div> \
	</div>';
}

function GetXmlHttpObject() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	}
	if (window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
	return null;
}

function efetua_login(form) {
	var strMail = form.strMail.value
	var strSenha = form.strSenha.value
	xmlhttp = GetXmlHttpObject();
	if (xmlhttp != null) {
		var url="actions/do_efetua_login.php?do=login";
		url += "&strMail="+strMail;
		url += "&strSenha="+strSenha;
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState == 1) {
				document.getElementById("resposta").innerHTML = '<img src="images/loading2.gif" style="top:37px; left: 355px; position:absolute;" />';
			}
			if (xmlhttp.readyState == 4) {
				if(xmlhttp.responseText == 'ok') {
					document.location.href = 'escolha.php';
				}
				if(xmlhttp.responseText == 'fail') {
					$.unblockUI();
					document.getElementById("caixa_login").innerHTML = ' \
					<div id="cx_logado" style="display:block"> \
						<div style="top:40px; font-size:12px; left: 16px; position:absolute;">Seu e-mail e/ou senha foram informados incorretamente.<br />&raquo; <a href="#" onclick="voltar()">Voltar</a></div> \
					</div>';
				}
			}
		}
		xmlhttp.open("POST", url, true);
		xmlhttp.send(null);
	}
	return false
}

function efetua_logoff() {
	xmlhttp = GetXmlHttpObject();
	if (xmlhttp != null) {
		var url="actions/do_efetua_login.php?do=exit";
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState == 1) {
				document.getElementById("caixa_login").innerHTML = ' \
				<div id="cx_logado" style="display:block"> \
					<div style="top:37px; left: 70px; position:absolute;"> \
						<img src="images/loading2.gif" align="absmiddle" /> Saindo... \
					</div> \
				</div>';
			}
			if (xmlhttp.readyState == 4) {
				document.location.href = 'index.php';
			}
		}
		xmlhttp.open("POST", url, true);
		xmlhttp.send(null);
	}
	return false
}