” What is Sajax?
The Simple Ajax Toolkit (Sajax) is synchronous asynchronous JavaScript and XML. What makes it synchronous is that the details of the XML HTTP object used in your current Ajax application are abstracted away using the Sajax.php library file. This makes developing Ajax applications much easier because the chance of programming errors are reduced. Your links will also be much simpler because they will contain only function calls. Basically, Sajax is a modular way of making Ajax applications through defined and dynamic function calls, making the application development process smoother. “
Overview of Ajax technology
1. Download Sajax
2. See this simple example to have an idea
3. Let’s start playing with the example code. Just copy and paste into your workplace
Interested more ? then download this ibm-sajax.pdf
enjoy 
Ref: modernmethod.com
