window.addEvent('domready', function() {
	var formType = $('contact_form_type');
	if (formType) {
		var updateForm = function() {
			$$('.contact_form_field_form').each(function(formFilter) {
				if (formFilter) {
					var field = $(formFilter.parentNode);
					if (field) field.setStyle('display', formFilter.hasClass(formType.value) ? 'block' : 'none');
				}
			});
		};
		formType.addEvent('change', updateForm);
		formType.addEvent('keyDown', updateForm);
		updateForm();
	}
});