objects in functions?

Hi, I want to make a recursive function generating a hierarchy using a class. The following code works fine when I don't wrap the function around it, but when I do it fails. I can't figure out why... I'm thinking I may need to make some vars global, or maybe you can't use objects inside functions? (No, couldn't be) Here's the code: ......... $root = $tree->open_tree ($title, ""); function generate_nodes($id) {

       $sql = "select * from hierarchy where parent = $id";
       $res = mysql_debug_query($sql);
       while ($row = mysql_fetch_array($res)) {
            $node = "node" . $count;
            $$node = $tree->add_folder ($root, $row["name"] . " <font size=1>" . $row["id"] . "</font>", "");

            $count++;
       }

} generate_nodes($id); ........ Thanks for any hints... Peter ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ http://liga1.com: building multiple language/culture websites