Download Prototype - can do AJAX calls and other amazing things

http://www.prototypejs.org/download

Download Prototype

Download the latest stable version — 1.7 (November 16, 2010)

Build the complete “prototype.js” file with rake dist command—find more details about this in the contribution guide.

Compatibility

The latest version of Prototype is compatible with the following browsers:

Browser	Version(s)
Mozilla Firefox	≥ 1.5
Microsoft Internet Explorer for Windows	≥ 6.0
Apple Safari	≥ 2.0.4
Google Chrome	≥ 1.0
Opera	≥ 9.25

Prototype Tips and Tutorials

http://www.prototypejs.org/learn

• Introduction to JSON

  JSON (JavaScript Object Notation) is a lightweight data-interchange format (if you are new to JSON, you can read more about it on the JSON website). It is notably used by APIs all over the web and is a fast alternative to XML in Ajax requests. Prototype 1.5.1 finally features JSON encoding and parsing support.