Untitled

<form name="loginform" method="post" action="userauthentication.php">
      <div align="center"><p>Email: <input type="text" name="email"><br><br>
      Senha: <input type="password" name="senha"><br><br></p>
      <input type="submit" value="Logar"></div>
    </form>

<?php
$host = "localhost";
$user = "root";
$pass = "";
$banco = "cadastro";
$conexao = mysql_connect($host, $user, $pass) or die (mysql_error());
mysql_select_db($banco) or die (mysql_error());
?>

<html><head><title>Autenticando usuário</title>
<script type="text/javascript">
	function loginsuccessfully(){
	setTimeout("window.location'painel.php'", 5000);
}
function loginfailed(){
	setTimeout("window.location'login.php'",5000)
}
</script>
</head><body>

<?php
$email=$_POST['email'];
$senha=$_POST['senha'];
$sql = ("SELECT * FROM usuarios WHERE email = '$email' and senha = '$senha'")
$row = mysql_num_rows($sql);
if($row > 0) {
session_start();
$_SESSION['email']=$_POST['email'];
$_SESSION['senha']=$_POST['senha'];
echo "<center>Você foi logado! Aguarde um instante.</center>"
echo "<script>loginsuccessfully()</script>";
}
else {
	echo "<center>Nome de usuário ou senha inválidos, aguarde um instante.</center>";
echo "<script>loginfailed()</script>"
}
?>

</body></html>