Te lo corrijo:
Código PHP:
1.
if (isset($_POST['correo'])) {
2.
$loginUsername=$_POST['correo'];
3.
$password=md5($_POST['password']);//aquí el error de momento
4.
$MM_fldUserAuthorization = "";
5.
$MM_redirectLoginSuccess = "home.php";
6.
$MM_redirectLoginFailed = "login_error.php";
7.
$MM_redirecttoReferrer = false;
8.
mysql_select_db($database, $xxxxx);
9.
10.
$LoginRS__query=sprintf("SELECT correo, password FROM usuarios WHERE correo='%s' AND password='%s'",
11.
get_magic_quotes_gpc() ? $loginUsername : addslashes($loginUsername), get_magic_quotes_gpc() ? $password : addslashes($password));