[ragtek]

i've solved it


i changed the script to:

var ultree;
(function() {

    function treeInit() {
        ultree = new YAHOO.widget.TreeView("treeDiv");

       ultree.setExpandAnim(YAHOO.widget.TVAnim.FADE_IN);
       ultree.setCollapseAnim(YAHOO.widget.TVAnim.FADE_OUT);      
       ultree.readList();

       ultree.subscribe("expand", function(node) {
           });

       ultree.subscribe("collapse", function(node) {
           });

       ultree.subscribe("labelClick", function(node) {
           });


        ultree.draw();
        fetch_object('treenavi').style.visibility = 'visible';
    }


    YAHOO.util.Event.onDOMReady(treeInit);

})();

and to the table/div whatever you have i added:

<table class="tborder" cellpadding="6" cellspacing="1" border="0" width="100%" align="center" style="visibility:hidden" id="treenavi">

style="visibility:hidden" id="treenavi"
so now it have a id(needed for the fetch_object method and it is set visibility:hidden, so it is hidden until

 YAHOO.util.Event.onDOMReady(treeInit);

the "dom is ready" that means until everything is loaded
and then i fire the init function, now the tree is "built" and visibility is set

here's a video how it looks like: http://www.ragtek.org/tutorials/treemenu.htm