ModalPopupExtender with thumbnail and full size image <p>let me rewrite my question, I have a Ajax Accordion in my web site, Users can add images, in Accordion,I keep the thumbnail and fullsize image's path in Sql Server table, Users can see the thumbnail, and when they click the thumbnail, I use a ModalPopupExtender that open an asp panel to show the full size image, with progress image or preload bar </p> <p>What is the best way to achieve this?</p> <p>Thanks in advance </p>