Output all domain extensions available upon clicking the tld box

[FZeus]

How do I create, when upon clicking on the extension box of the orderform an output like this  

?

[brian!]

12 hours ago, FZeus said:

How do I create, when upon clicking on the extension box of the orderform an output like this  

if this is a WHMCS site, i'd be tempted to say look at the template source and see how they did it...

ultimately, it's likely just a reorganisation of the divs in the output when you're looping though the categories - but how would depend if all categories are to be shown on the same page, or only a highlighted one.