You can do that with the parallax effect. you can get there by using the row format item in a page (step4)

Use also the help in x5 (F1 button) whenever you need help on the place that you are at that moment.

http://help.websitex5.com/en/v13/pro/aspetto_cella_ht.htm

http://help.websitex5.com/en/v13/pro/aspetto_riga_ht.htm