An ideal scenario for lightweight Ajax and JavaScript based application is to use one script only. An effective application is not necessarily about the dazzling scripts that you can add in your online application. You need to have a smart application that could cater to what the user needs. Sometimes, your users only need a simple HTML and JavaScript application wherein it will only have one script. As long as you answer what they need from an online application, you should be able to have a satisfying application. But there will always be a time that you would need to install more than a single script in your Ajax based application. By creating two or more scripts for th