function arbah_hex($string)
    {
	   global $PowerBB;

	   $string = bin2hex("$string");
	   $string = chunk_split($string, 2, '%');
	   $string = '%' . substr($string, 0, strlen($string) - 1);
	   return $string;
    }

    function arabh_function($text)
    {
	   global $PowerBB;

	   if (!empty($text))
	   {
		  if (@preg_match_all("/(\<a href=\")(.[^\"]*)/i", $text, $matches))
		  {
			 $localdomains = array($PowerBB->_SERVER[&#39;SERVER_NAME&#39;]);
			 $preg_search = array();
			 $preg_replace = array();


			 foreach ($matches[2] AS $key=>$serverurl)
			 {
				// Do we have a local url?
				if (($parsed_url = @parse_url($serverurl)) !== false)
				{
				    $servername = $parsed_url[&#39;host&#39;];

				    if ($parsed_url[&#39;fragment&#39;] AND !$parsed_url[&#39;host&#39;])
				    {
					   continue;
				    }

				    foreach ($localdomains AS $localdomain)
				    {
					   if (substr($localdomain, 0, 1) == ".")
					   {
						  if (preg_match("/$localdomain$/i", $servername))
						  {
							 continue 2;
						  }
					   }
					   else
					   {
						  if (strtolower($localdomain) == strtolower($servername))
						  {
							 continue 2;
						  }
					   }
				    }
				}
				else
				{
				    continue;
				}

				$encoded_url = $this->arbah_hex(base64_encode($serverurl));
				$anonymurl = "arbah.php?url=" . $encoded_url;
				$preg_search["$serverurl"] = "<a href=\"$serverurl";
				$preg_replace["$serverurl"] = "<a href=\"" . $anonymurl;
			 }

			 if ($preg_search)
			 {
				$text = str_replace($preg_search, $preg_replace, $text);
			 }
		  }
	   }

	   return $text;
    }