I am trying to redesign my project. I will try to state my requirements as briefly as possible. My page has a set of questions to be answered by any customer who wants to buy anything from the Client Company. The options available for each question change based on any answer given by the customer. This means the client has to talk to the server everytime an answer is given. But the page must not refresh during this communication. I am using a hidden iframe for the communication. What i want to know is can i use AJAX in this case. I am really interested to know more about this new Technology.