fejlmedd. i billedupload

hej...

hvad betyder lige disse fejl?

Warning: move_uploaded_file(./images/gallery_1_image_21.jpg) [function.move-uploaded-file]: failed to open stream: Permission denied in /usr/home/web/sth15842/galleri/uploadtest.php on line 68

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/var/tmp/php3tvyJt' to './images/gallery_1_image_21.jpg' in /usr/home/web/sth15842/galleri/uploadtest.php on line 68

..:: upload.php ::..
    $mb = 2;                    // maks billedestørrelse
    $kb = $mb * 1024;          // maks i mb
   
    $max = 800;                // på begge retninger!
    $thumbdir = "/thumb/";      // mappe til thumbnails
    $galleridir = "./images";  // mappe til images

    $konfig["dir"] = $galleridir;
    $konfig["max"] = $kb;

    $fra = $_FILES["upfil"]["tmp_name"];
    $til = $konfig["dir"] . "/" . $_FILES["upfil"]["name"];

    $fil_stoerelse = filesize($fra)/1024;
    if($file_stoerelse > $konfig["max"]) {
      die("Filen er for stor!");
    }

    if(function_exists("move_uploaded_file")) {
linie 68 -->move_uploaded_file($fra, $til);
    } else {
      copy($fra, $til);
    }