cross domain scripting with tomcat

http://www.skill-guru.com/blog/2011/02/23/cross-domain-scripting-settings-on-tomcat/

https://developer.mozilla.org/En/XMLHttpRequest/Using_XMLHttpRequest

json to xml

http://onwebdevelopment.blogspot.com/2008/05/converting-xml-to-json.html

http://www.xn--schler-dya.net/blog/2008/01/26/converting-json-to-xml-and-xml-to-json/
http://www.xn--schler-dya.net/blog/wp-content/uploads/2008/01/JsonXml.js

how css work :D

http://www.slideshare.net/webdevninja/how-css-works
http://coding.smashingmagazine.com/2007/07/27/css-specificity-things-you-should-know/

free and open cloud storage system

http://tahoe-lafs.org/trac/tahoe-lafs