Microsoft AJAX CDN, JQuery lib

Source
http://ajax.microsoft.com/ajax/jquery/jquery-1.3.2.min.js

How to improve the performance of ASP.NET MVC web application

Source

Implementing Caching
Implementing HTTP Compression
Implementing JQuery UI library with Google Hosted Ajax Libraries
By combining scripts and other resources
Deploying production code in release mode
Removing default HTTP modules in ASP.NET
Optimizing URL generation