如何将原型的切换应用于仅通过JSON，IE问题加载的内容

I use PHP and javascript via prototype. i have a threaded comments page that on open by default via javascript call to a PHP file data returned via JSON, only parent comments are retrieved in the db. (in short only parent comments are fetched from db and displayed) then the parents are loaded and formatted to be shown on the page with a link to get and display its child comments, link example:I use PHP and javascript via prototype. i have