[Routing] Routing (XML) Format

[bernhard zwischenbrugger]

Hi all

I'm working on routing for khtmlib (javascript map lib with fast zoom).
Cloudmade is working now, but I also want integrate other routing engines.

Here my current version:
http://www.khtml.org/osm/v0.71/

Cloudmade gives the routing information in this formats:
http://developers.cloudmade.com/wiki/routing-http-api/Documentation

Now I need information about other routing formats.

Are there open APIs somewhere to get routing information?
Is there a standized format for route description?
Is there a way to get osm-relation like routing descritions?
http://wiki.openstreetmap.org/wiki/Relation:route

At the moment I can not setup a routing server - but maybe I will do in 
futur.

Bernhard