var LCSendFormValidationGUID = '{7ABFCE0C-6FBA-46E9-90B2-A290F8467601}';

// alert('<input type="hidden" name="VAL_XYZ_LC_GUID" value="' + LCSendFormValidationGUID + '">');

document.write('<input type="hidden" name="VAL_XYZ_LC_GUID" value="' + LCSendFormValidationGUID + '">');