One possibility comes to mind. What if the response pages had an html background area containing a link (see "Background" in the "Questionnaire" section of the user's guide). That link could read "Re-read the scenario" or some such. The link could be for a -pop-up- HTML page with whatever you wanted them to see. That way they wouldn't even have to leave the page to see whatever you want to show again. I think we offered this as a solution in the past when a user wanted to be able to show the Spanish translation of text on a given item. Participants could click on a translation link and a Spanish text pop-up HTML would appear.