if ($_GET["thumbnail"]!="") {
	GLOBAL $thumbnailHeight, $cacheThumbnails;
	$thumbnailCacheSubdir = ".snifthumbs";
	
	$file = safeDirectory(urldecode($_GET["thumbnail"]));
	doConditionalGet($_GET["thumbnail"],filemtime($file));

	$thumbDir = dirname($file)."/".$thumbnailCacheSubdir;
	$thumbFile = $thumbDir."/".basename($file);
	if ($cacheThumbnails) {
		if (file_exists($thumbDir)) {
			if (!is_dir($thumbDir)) {
				$cacheThumbnails = false;
			}
		} else {
			if (@mkdir($thumbDir)) {
				chmod($thumbDir, "0777");
			} else {
				$cacheThumbnails = false;
			}
		}
		if (file_exists($thumbFile)) {
			if (filemtime($thumbFile)>=filemtime($file)) {
				Header("Location: ".dirname($_SERVER["PHP_SELF"])."/".$thumbFile);
				die();
			}
		}
	}
	$contentType = "";
	$extension = strtolower(substr(strrchr($file, "."), 1));
	switch ($extension) {
		case "gif":		$src = imagecreatefromgif($file); $contentType="image/gif"; break;
		case "jpg":		// fall through
		case "jpeg":	$src = imagecreatefromjpeg($file); $contentType="image/jpeg"; break;
		case "png":		$src = imagecreatefrompng($file); $contentType="image/png"; break;
		default:	die(); break;
	}
	$srcWidth = imagesx($src);
	$srcHeight = imagesy($src);
	$srcAspectRatio = $srcWidth / $srcHeight;
	
	$maxAge = 3600; // one hour
	Header("Cache-Control: public, max-age=$maxAge, must-revalidate");
	Header("Expires: ".createHTTPDate(time()+$maxAge));

	if ($srcHeight $srcHeight) {
			$thumbWidth = $thumbnailWidth;
			$thumbHeight = $thumbWidth / $srcAspectRatio;
		} else {
			$thumbHeight = $thumbnailHeight;
			$thumbWidth = $thumbHeight * $srcAspectRatio;
		}
		if (function_exists('imagecreatetruecolor')) {
			$thumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
		} else {
			$thumb = imagecreate($thumbWidth, $thumbHeight);
		} 
		imagecopyresampled($thumb, $src, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $srcWidth, $srcHeight);
		Header("Content-Type: image/jpeg");
		if ($cacheThumbnails) {
			imagejpeg($thumb, $thumbFile);
			chmod($thumbFile, "0777");
			readfile($thumbFile);
		} else {
			imagejpeg($thumb);
		}
	}
	die();
}
if ($_GET["download"]!="") {
	$download = stripslashes($_GET["download"]);
	$filename = safeDirectory($path.rawurldecode($download));
	if (
		!file_exists($filename)
		OR fileIsHidden($filename)
		OR (substr(strtolower($filename), -4)==".php" AND !$allowPHPDownloads)) {
		
		Header("HTTP/1.0 404 Not Found");
		$displayError[] = sprintf(translate("File not found: %s"), $filename);
	} else {
		//doConditionalGet($filename, filemtime($filename));
		Header("Content-Length: ".filesize($filename));
		Header("Content-Type: application/x-download");
		Header("Content-Disposition: attachment; filename=\"".rawurlencode($download)."\"");
		readfile($filename);
		die();
	}
}