How to remove header and footer cells from popup

Also, how can I make it so the user can also click on the image to make a selection

I went into the HTML code and got the names of the containers and used the same javascript I use to hide the default index menus.

This is what I used in the javascript section of events:

$("div[data-menu-width]").hide();
$("div[edit-form-cell]").hide();
$("div[data-fixed]").hide();

Yours might differ.

Thanks, I've got it looking how I want (almost) by modifying the css.

Just wanted to add that CSS is most likely the easiest option here.