AjaxRequest

AjaxRequest is a layer over the XMLHttpRequest functionality which makes the communication between Javascript and the server easier for developers.

Features:
- Simplify the interface to using XMLHttpRequest, making it more logical and consistent with what developers expect. No more worrying about the onreadystate handler or status codes!
- Add timeout functionality for async requests, allowing extended functionality if Ajax calls take too long
- Provide activity monitoring features, so developers can provide accurate "busy" indicators to users when Ajax requests are running in the background
- Support multiple simultaneous requests which will not collide with each other without any additional work from the developer
- Simplify form submissions, so submitting a form using Ajax is just a single function call. Form serialization, request headers, form targets and methods - they are all taken care of for you!