function sortToggle(field) {
	var sort_order_element = $('sort_order');
	var sort_field_element = $('sort_field');

	if ((sort_field_element.value == field) && (sort_order_element.value == 'ASC')) {
		sort_order_element.value = 'DESC';
	} else {
		sort_order_element.value = 'ASC';
	}

	sort_field_element.value = field;

	submit_results_search();
}