Google Analytics Code Update for Sub Domains and Multiple Domains

Having trouble with the code for Google Analytics on a site needing sub-domain or multiple domain tracking? Google-ing the web, trying to figure out what are setDomainName, setAllowHash, setAllowLinker; and how to use them?? No sweat! Google Analytics does it for you now. The code has been updated for automatic modifications for sub-domains and multiple domains. Just click on the appropriate check-box while generating the code, and voila!