Cross domain Ajax

Here are a few of the most popular ways to do cross domain calls via JavaScript: proxies, JSON, and Flash.

http://snook.ca/archives/javascript/cross_domain_aj/

http://www.xml.com/pub/a/2005/12/21/json-dynamic-script-tag.html

Dynamic Webpages with JSON

A JSON-based design approach lacks AJAX's cross-domain restrictions

By Ajay Raina and John Jimenez, JavaWorld.com, 11/15/06

http://www.javaworld.com/javaworld/jw-11-2006/jw-1115-json.html
http://direction.tistory.com/32

 JS로 AJAX처럼 하기 - Cross Domain 문제해결하기 - 1
http://renewal.tistory.com/114