popup images

Pop-up anythings are not a good idea. In fact they are frowned on from an accessibility view point.

Consider having your images appear in a div as part of the page, controlling the visibility with css.

You contain each of the images you want to show inside a div element.

Each of these divs is initially hidden using css.

Then when the user selects whatever it is they select on your page, the relevent div is made visible at a location determined by you.

Have a read up on using divs as containers. The css position attributes and the css display attribute.

Formulate some ideas on how it will work and come back when you need to clarify an idea.