One thing that will be very important: XmlHttpRequest. I recommend this post, it helped me to understand the basics: http://everythingsysadmin.com/2010/06/lear

One thing that will be very important: XmlHttpRequest. I recommend this post, it helped me to understand the basics: http://everythingsysadmin.com/2010/06/learning-ajax-after-ignoring-i.html http://everythingsysadmin.com/2010/06/learning-ajax-after-ig...