<script>
  function changeLabel(formName, formId) {
    if (isPageViewMode()) {
      AJS.$(formName).find('.i_holdingrow_fld').find('#i_labelfor_fld').html('New label text');
    }
  }

  function setInitialLabel(formName, formId) {
    if (isPageViewMode()) {
      AJS.$(formName).find('.i_holdingrow_fld').find('#i_labelfor_fld').html('Original label text');
    }
  }


  function isPageViewMode() {
   return AJS.$('#wysiwygTextarea_ifr').length === 0;
  }

</script>