$(document).ready(function() {
	m = $('select[name="main"]');
	s = $('select[name="sub"]');
	t = $('#dbsearch').attr('name');
	m.change(function() {
		$.ajax({
					url:	'getThemes.php?id='+parseInt($(this).val())+'&type='+t,
					type:	'GET',	
					async:	true,
					success: function(d) {
						s.html(d);
					}				
		});
	});
});