What you are asking are 100% custom modifications
(because you want to change how the things work/look) and unfortunately we don't provide free support or step-by-step instructions for custom coding modifications.
You may purchase premium support:
www.flexiblewebdesign.com/premium-support
and let us take care this modification for you directly on your website though.
FYI: You need to use JavaScript Equalizer plugin on category page:
tsvensen.github.io/equalize.js/
Regards.
Support