/** targetgroups operations **/
  schoeck_targetgroups_close_success = function()                               {}
  schoeck_targetgroups_close_failure = function()                               {}

  schoeck_targetgroups_close = function(id, clazz, method)
  {
    document.getElementById('header_navigation').innerHTML = document.getElementById('header_navigation-main').innerHTML;

    new YAHOO.mzag.ajax.AjaxRequest(id, clazz, method, [], this.value)
                       .setSuccessCallback(schoeck_targetgroups_close_success)
                       .setFailureCallback(schoeck_targetgroups_close_failure)
                       .submit();
  }