text: (function ($, Configuration) {
      // var url = '/api'+Configuration.url+'.html';
      var url = Configuration.url;
      var id = Configuration.tab.substring(1) + "_html_previewer";
      $(Configuration.tab).append("<div id='" + id + "' style='margin: 10px; border: 1px #F5F5F5 solid;'></div>");
      $.ajax({
          url: url,
          success: function (data) {
              $('#'+id).append(data);
          }});
  }(jQuery, Configuration));