session_start();
	$usu = $_POST["usu"];
	$pass = $_POST["pass"];
	$host = $_SERVER['HTTP_HOST'];
	$uri = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
	if($baseDeDatos->IsCorrect($usu,$pass))
	{
		$extra = 'main.php';
		$_SESSION['usu'] = $_POST['usu'];
	}
	else
		$extra = 'error.php';
	header("Location: http://$host$uri/$extra");