var LCSendFormValidationGUID = '{265A1E41-70E1-462A-9B8E-5D0F9D38F4AE}';

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

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