How to access a site with javascript for titanium mobile using the methods in an xmlrpc API?

I need help or hint on how to use xmlrpc service to connect to a site e.g. drupal with a titanium mobile client application and use the methods i开发者_StackOverflow社区n the xmlrpc API.

Working with Remote Data

Interacting with remote web services and assets

• Make HTTP requests for remote data
• Interact with XML-RPC based web services
• Process XML data from web services

http://wiki.appcelerator.org/display/guides/Working+with+Remote+Data