Untitled

function DisplayIndex()
{
    global $files;

    $image = intval($id);

    $vars = array();
    $vars['TITLE'] = $image;
    $vars['COUNT'] = '/' . count($files);

    if ($image > 1)
        $vars['PREV'] = '<a href="index.php?id=' . ($image - 1) . '"><B>PREV</B></a>';
    else
        $vars['PREV'] = '<span class="disabled">PREV</span>';

    if ($image < count($files)-0)
        $vars['NEXT'] = '<a href="index.php?id=' . ($image + 1) . '"><B>NEXT</B></a>';
    else
        $vars['NEXT'] = '<span class="disabled">NEXT</span>';

    if ($image > 1)
        $vars['FIRST'] = '<a href="index.php?id=' . ($image > 1) . '"><B>FIRST</B></A>';
    else
        $vars['FIRST'] = '<span class="disabled">FIRST</span>';
    if ($image > 1)
        $vars['LAST'] = '<a href="index.php?id=' . count($files) . '"><b>LAST</b></a>';


    $vars['IMAGE'] = '<a href="index.php"></a>&nbsp;&nbsp;&nbsp;' . $image;
    $vars['IMAGESRC'] = $files[$image];


    echo '<title>' . $vars['TITLE'] . '</title>' . "\n";
    echo "</head>\n<body>";
    echo '<p>';
    echo $vars['FIRST'] . '&nbsp;&nbsp;&nbsp;' . $vars['PREV'] . '&nbsp;&nbsp;&nbsp;' . $vars['NEXT'] . '&nbsp;&nbsp;&nbsp;' . $vars['LAST'] . '&nbsp;&nbsp;&nbsp;' . $vars['IMAGE'] . $vars['COUNT'];
    echo '</p>';
    echo '<p><img src="' . $vars['IMAGESRC'] . '"></p>';
}

$files = GetFileList('.');

if (isset($_GET['id']) && is_numeric($_GET['id']))
{
    // single image mode
      $id = $_GET['id'];
    DisplayImage($id);
} else {
    // index list mode
    DisplayIndex();
}