How to handle many images

I like to refer to your template "Purchase Order - Point Of Sale", I liked the photos appearing when an item is selected but the hide method is not economical when there is many products.  What is alternative method other than hiding? Is is possible do this by using a single html box that changes its url with different options?

Unfortunately, it is not possible to use a single html box that changes its URL with different options. Other alternating/option you may want to try is to download the full source code of your form and add some scripts to your form to achieve what you need. Here is a guide to get the full source code of your form: How to get the Full Source Code of your Form. 

Do let us know if you need further assistance.
Regards.