$(document).ready(function(){

	$("form.brand_list").find("select[name=brand_id]").change(function(){
		$("form.brand_list").find("select[name=series_name]").val(0);
		this.form.submit();
	
	});
	$("form.brand_list").find("select[name=series_name]").change(function(){
		this.form.submit();
	
	});

});