An Ajax based application could work with XML, JavaScript, CSS and a little bit of HTML. Other programming languages could be part of this client side programming technique but they are often regarded as an add-on and not a part of Ajax. The combination of these programming languages has made Ajax into one of the most powerful programming techniques. Instead of simple websites, highly interactive Ajax based online applications are created. It can even be said that the reality of cloud computing has been made possible because of the advancement of Ajax based applications. But when it comes to programming, Ajax is one of the most difficult to code and maintain. The variables