PSN Home Avatar Grabber

<?php

if(isset($_POST['submit'])) {
    if(!$_POST['psuser']) echo("Enter your Playstation Network username.");
    else echo('<img src="http://playstationhome.jp/community/mypage.php?ActionCD=Avatar&&OnlineID='.$_POST['psuser'].'"><br />');
}
if(isset($_POST['download'])) {
    if(!$_POST['psuser']) echo("Enter your Playstation Network username to download the image.");
    else {
        $file_url = 'http://playstationhome.jp/community/mypage.php?ActionCD=Avatar&&OnlineID='.$_POST['psuser'];
        $file_name = $_POST['psuser'].".jpg";
        header('Content-Type: application/octet-stream');
        header("Content-Transfer-Encoding: Binary");
        header("Content-disposition: attachment; filename=\"".$file_name."\"");
        readfile($file_url);
    }
}

?>
<LINK href="avatar.css" rel="stylesheet" type="text/css">
<form action="" method="post">
<input type="text" placeholder="PSN Username" class="input_text" name="psuser"><br />
    <input type="submit" name="submit" class="input_submit alt" value="Show Avatar"> | <input type="submit" class="input_submit alt"  name="download" value="Download Avatar">
</form>
</center>