do you have some coding done so far? in case you haven't, please go through some AJAX-Tutorials that you find in the (sticky) offsite-links that are posted in the forum and when you have special problems with your code ... come back and post specific questions concerning that. you also may have a look at the js-articels-section where you find a short but good overview on how to make an ajax-call ... and you may use it as a quickstart ... ;)
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