Show More/less Button On Description Of Categories Page

Basically I want the Category Page description to have Show More/Show Less button when user clicks the whole article displays may be with some sliding effect.

Please help anyone with detailed information how to do it. Thanks

CS-CART V4.3.4

I am afraid, the whole modification cannot be described in few words

Bump. Any quick help regarding this? I think this is useful from seo perspective. You can put more category / page content without make the page lengthy