Вопрос по RSForm - RS Form!

<script type="text/javascript">

function dynamic1(parent,child){

	var parent_array = new Array();

	parent_array[''] = ['Please select a manufacturer'];

	parent_array['Audi'] = ['A3','A4','A5','A6','A8','Q5','Q7','S3','S4','S5','S6','S8','RS6'];

	parent_array['Dacia'] = ['Sandero','Logan'];

	parent_array['FIAT'] = ['Bravo','Punto','Grande Punto'];

	parent_array['Peugeot'] = ['207','308','407','607'];

	parent_array['SEAT'] = ['Ibiza','New Ibiza','Leon'];

	parent_array['Skoda'] = ['Fabia','Octavia Tour','Octavia 2','Superb'];

	var thechild = document.getElementById(child);

	thechild.options.length = 0;

	var parent_value = parent.options[parent.selectedIndex].value;

	if (!parent_array[parent_value]) parent_value = '';

	thechild.options.length = parent_array[parent_value].length;

	for(var i=0;i<parent_array[parent_value].length;i++){

		thechild.options[i].text = parent_array[parent_value][i];

		thechild.options[i].value = parent_array[parent_value][i];} }

</script>