Form constructor for testing invalid #type 'range' elements.
function form_test_range_invalid($form, &$form_state) {
$form['minmax'] = array(
'#type' => 'range',
'#min' => 10,
'#max' => 5,
'#title' => 'Invalid range',
'#description' => 'Minimum greater than maximum.',
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => 'Submit',
);
return $form;
}