1. var j=1;
   $('.btn').click(function (e) {
                   e.preventDefault();
                   dyntable = "";
                   j += 1;                
                   count += 8;                
                   dyntable += '<tr id=' + j + '>';
                   
                   for (i = i; i <= count; i++) {
   
                       dyntable += '<td><input  width="70px;" class="cp" type="text" id="textbox' + i + '" /></td>';
   
                      
                   }
                   
                    dyntable += '<td><input type="button" value="Add" class="btn"/></td>';
                   dyntable += '</tr>';
                    $(dyntable).insertAfter('#1');
                   $('.cp').width(70);
                   
               });

My requirement is to concatenate following statement with j

 $(dyntable).insertAfter('#1');

like  $(dyntable).insertAfter('#'+j);

i have tried several times like  $(dyntable).insertAfter("#'+j+'");

but not working

how to solve this

Regards

Baiju