billed upload

hej eksperter

jeg fandt et php script til at uploade billeder med. og det virker som sådan også. men noget jeg ikke helt forstår er hvorfor mine billeder ikke kommer frem. hvad har har jeg gjort forkert her.

<?php
require('dataconfig.php');
//print_r($_POST);

unset($imagename);

if(!isset($_FILES) && isset($HTTP_POST_FILES))
$_FILES = $HTTP_POST_FILES;

if(!isset($_FILES['billed']))
$error["billed"] = "An image was not found.";


$imagename = basename($_FILES['billed']['name']);
//echo $imagename;

if(empty($imagename))
$error["imagename"] = "The name of the image was not found.";

if(empty($error))
{
$newimage = "img/" . $imagename;
//echo $newimage;
$result = @move_uploaded_file($_FILES['billed']['tmp_name'], $newimage);
if(empty($result))
$error["result"] = "There was an error moving the uploaded file.";
else
$error["result"] = "Picture uploaded succesfully.";



}

mysql_query("insert into produkt(prnavn, billed, beskrivelse) values('$prnavn','$billed','$indhold')") or die(mysql_error());
?>

på min siden under produkter kan i se hvordan det ser ud.
http://www.jp-pro.dk