Check out the latest version of Routino: svn co http://routino.org/svn/trunk routino
Process the URL query string in the Javascript not in custom*.cgi. Refactor a lot of the code for coordinate handling. Simplify custom*.cgi so that they just redirect to the HTML page (will be removed in later versions - for existing link compatibility only).
trunk/web/www/routino/customrouter.cgi