", $output);
	  $output = $smile;
	}
  // Find a unique symbols for image start and end markers
  $imgstartsymbol = "A";
  $imgstartmarker = $imgstartsymbol;
  while(strpos($output, $imgstartmarker)) $imgstartmarker .= $imgstartsymbol;
  $imgendsymbol = "B";
  $imgendmarker = $imgendsymbol;
  while(strpos($output, $imgendmarker)) $imgendmarker .= $imgendsymbol;
  // Find and mark image URLs (so that they don't get converted into normal  links)
  $output = preg_replace("/http:\/\/(\S*?\.JPG|\S*?\.jpg|\S*?\.gif|\S*?\.png|\S*?\.jpeg)/", $imgstartmarker."$1".$imgendmarker, $output);
  // Replace URLs with  tags
  $output = preg_replace("/http:\/\/(\S*?)([\n ]|$)/s", "$1$2", $output);
  // Convert marked images to img tags and links
  $output = preg_replace("/".$imgstartmarker."(\S*?)".$imgendmarker."/s", "", $output);
  // Replace file links with their thumbnails.
  $output = preg_replace("/\{\{([0-9]*?)\}\}/s", "
", $output);
  // Replace [quote title=...]...[/quote]
  $urls = "";
  while(($start = strpos($output, "[quote"))) {
    $pre = substr($output, 0, $start);
    $url = substr($output, $start);
    $end = strpos($url, "[/quote]") + strlen("[/quote]");
    $url = substr($url, 0, $end - strlen("[/quote]"));
    $post = substr($output, $start + $end + strlen("[/quote]") );
		$header = substr($url, 0, strpos($url, "]") + 1);
		$body = substr($url, strpos($url, "]") + 1);
		$header = str_replace(array("title"), "", $header);
		$header = str_replace(array("="), "