Using jQuery deferred is nice.

• https://gist.github.com/1214402
• http://jsfiddle.net/gh/gist/jQuery/1.6.3/1214402/

I coded this to explain creating ajax proxy is good.
Following code does perfectly same thing but is much dirty than above. 

• https://gist.github.com/1214521
• http://jsfiddle.net/gh/gist/jQuery/1.6.3/1214521/