[jQuery] How can I code this func fully jQuery compatible

[phpLord]

Hi;
function showReplyBox(itemId,parentId)
   {
       var box = document.getElementById('comment-reply-box');
       var itemBox = document.getElementById('comment-item-'+itemId);
       var parent_id = document.getElementById('parent_id');
      
      
      
       parent_id.value= parentId ? parentId : itemId;

       $("#box").hide()
       $('#replybox').remove()

      
      
  
       var replyDiv = document.createElement('div');
          
       replyDiv.setAttribute('id','replybox');
       $('#replybox').hide()
       replyDiv.innerHTML = box.innerHTML;
       itemBox.appendChild(replyDiv);
       $('#replybox').slideDown("slow");

   }

I got a func like above, as you I am a newbie in jquery ;)

I try to do that like below but I cannot succeed it

function showReplyBox(itemId,parentId)
   {
       var box = $('#comment-reply-box');
       var itemBox = $('#comment-item-'+itemId);
       var parent_id = $('#parent_id');
      
      
       parent_id.val(parentId ? parentId : itemId);

       $("#box").hide()
       $('#replybox').remove()

      
       $('<div />').attr("id","replybox")

       $('#comment-reply-box').appendTo('#replybox')
       $('#replybox').append('#comment-item-'+itemId)          

   }

tHanks for any help