function check_content($filename,$disallowed_content)
	{
	    $disallowed_content = explode('|', $disallowed_content);
		$fp = @fopen($filename, 'rb');
		if ($fp !== false)
		{
			$ie_mime_relevant = fread($fp, 256);
			fclose($fp);
			foreach ($disallowed_content as $forbidden)
			{
				if (stripos($ie_mime_relevant, '<' . $forbidden) !== false)
				{
					return false;
				}
			}
		}
		return true;
	}