problema con odbc_fetch_array y odbc_exec

[paquinho007]

<?
include('conec.php');
session_start();
$TIP1=adm;
$TIP2=usu;
if($_POST){
$usu= $_POST['user'];
$usu=strtoupper($usu);
$pass= $_POST['password'];
}
$query="SELECT * FROM user WHERE user='$usu' AND password='$pass'";
$resultset=mysql_query($query);
$row=mysql_fetch_array($resultset);
$TYPE=$row["tipo"];
echo $TYPE;
if ($TIP1 == $TYPE) {
header('location:inicioadm.php');
$_SESSION['loged'] = '1';
$_SESSION['adm'] = $adm;
} else {
if ($TIP2 == $TYPE) {
header('location:iniciousu.php');
$_SESSION['loged'] = '1';
$_SESSION['usu'] = $usu;
}// else {
// header('location:error.html');
//$_SESSION['loged'] = '0';
//}
}
?>

ok lo probe con mysql_query y me marca error en la linea 13 marcandome este error
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in C:\AppServ\www\login.php on line 13
gracias por la ayuda