title: Here are the problems, with a small jQuery script(add input)
body: <p>how can empty value input new. in input new not putting value and it is empty and value putting in input previous, no in input new. how is it?<br></p>
  
  <p>For results, please fill out the input and clicked on add: <a href="http://jsfiddle.net/YxC6p/" rel="nofollow">JSFIDDLE</a></p>
  
  <pre><code>$(function () {
          $('a.add_input').live('click', function (e) {
              e.preventDefault();
              var $mediumCell = $(this).closest("div.mediumCell");             
              var $class =  '.' + $(this).closest('div.find_input').find('div').attr('class');
              var $column = $(this).closest($class);
              var input = $column.clone().wrap("&lt;div /&gt;").parent().html();
              //var find = $(this).closest($class);    
              //var clone = find.find('.mediumCell:first').clone();
              //find.find('.mediumCell:has("input"):last').after(clone);
  
              alert(input)
              $column.before($(input));
              $($class+' .add_input').remove();
              $($mediumCell).append('&lt;a href="" class="remove_input"&gt;&lt;/a&gt;');
              $($mediumCell).append('&lt;a href="" class="add_input"&gt;&lt;/a&gt;');
          });
          $('.remove_input').live('click', function (e) {
              e.preventDefault();
              var $class =  '.' + $(this).closest('div.find_input').find('div').attr('class');
              $(this).parents($class).remove();
              $($class+' .adda:last').append('&lt;a href="" class="add_input"&gt;&lt;/a&gt;');
          });
      });
  </code></pre>