drop from url (for carrierwave)

gistfile1.rb

- content_for :javascript_page do
  :javascript 
    $(document).bind('drop', function(e) {
      var url
        , target = $(e.target)
        , remote_avatar = $('#user_remote_avatar_url')
      ;
      if (target.hasClass('dropzone')) {
        url = $(e.originalEvent.dataTransfer.getData('text/html')).filter('img').attr('src');
        if (target.hasClass('attachments-drop"')) {
          return;
        } else {
          var form = remote_avatar.val(url).parents('form');
          form.submit();
        }
      }
    });