<?php

class WebPageGeneratorForm extends Nette\Application\UI\Form
{

    public function __construct()
    {
        parent::__construct();

        $body = $this->addContainer("body");
        $bg = $body->addContainer("background");
        $bg->currentGroup = $this->addGroup("foo", FALSE);
        $bg->addText("color", "Background color:");
        $bg->addText("position", "Background position:", $backgroundPosition);
        $bg->addSelect("repeat", "Background repeat:");
        $bg->addUpload("image", "Background image:");

        // ...
    }
}