function renew_model()
{
		$("#ccarmodel").parent().removeClass("check");
		var carbrand = $("#ccarbrand")[0];
		if( carbrand.value != "" )
		{
			$("#ccarmodel").attr("disabled","disabled").html('<option value="">Загружаем список...</option>');
			$.getJSON("getCarModelsByBrand.php", {"brandname":carbrand.value},function(data){
				txt = '<option value="">Выберите модель</option>';
				for(i in data)
				{
					txt = txt + '<option value="'+data[i]+'"';
					if( carbrand.value == vk_formdata_carbrand && data[i] == vk_formdata_carmodel )
						txt = txt + ' selected ';
					txt = txt + '>'+data[i]+'</option>';
				}
				$("#ccarmodel").html(txt).removeAttr("disabled");
				update_completeness();
			});
		}else{
			$("#ccarmodel").html('<option value=""></option>')
		}

}

function update_completeness()
{
	$("#ccarbrand, #ccarmodel, #ccarmade").each( function(i,el){
		if(el.value!='') $(el).parent().addClass('check');
		else $(el).parent().removeClass('check');
	});
}

$( function() {
	$("#ccarbrand").bind("change", renew_model );
	$("#ccarbrand, #ccarmodel, #ccarmade").bind("change",update_completeness);
	renew_model();
	update_completeness();
});