Hello. I have a problem when creating a toolbar and hiding some buttons.
goto the string marked !!!++++++   the explanation is over there.
I also can send you a full usecase exmple if you can give me a email, where I can sent to.
Thank You.
My js file looks like.
zen_toolbar.js
=============================
var mainToolBar;
var signupToolBar;
// ==== Constants =======
var DEFAULT_TOOLBAR_HEIGHT = ‘30px’;
//menu’s ids
var FILEBOX = ‘filebox’;
var TOOLBOX = ‘toolbox’;
var SQUAWKBOX = ‘squawkbox’;
var SANDBOX = ‘sandbox’;
var FILES = ‘files’;
var RESOURCES = ‘resources’;
var MY_PROFILE = ‘my_profile’;
var GROUPS = ‘groups’;
var PORTAL = ‘portal’;
var FRIENDS = ‘friends’;
var HELP = ‘help’;
var SIGN_OUT = ‘sign_out’;
/**
 * Basic toolbar creation method.
 /
function createToolbar(userName) {
    mainToolBar = new dhtmlXToolbarObject(document.getElementById(‘toolbar_zone’), ‘100%’, DEFAULT_TOOLBAR_HEIGHT, “User Name(in sen._toolbar.js)”);
    mainToolBar.setOnClickHandler(onButtonClick);
    mainToolBar.loadXML(“init_xmls/basetoolbar.xml”)
    mainToolBar.setTitleText(userName)
    mainToolBar.showBar();
    signupToolBar = new dhtmlXToolbarObject(document.getElementById(‘sign_up_zone’), ‘100%’, DEFAULT_TOOLBAR_HEIGHT, “”);
    signupToolBar.setOnClickHandler(onButtonClick);
    signupToolBar.loadXML(“init_xmls/signintoolbar.xml”)
    signupToolBar.showBar();
    initFileBoxButtons(); //  !!!++++++ Here I’m calling the method that should make some buttons invisible
//          but these buttons stay visible in FF and Opera for some reason(in IE everythig forks fine). But when I run the debug mode in FF everuthing works fine.
}
/*
 * Function that catches the events whe button clicked.
 /
function onButtonClick(itemId, itemValue) {
    switch (itemId)
            {
        case FILEBOX:
            initFileBoxButtons();
            break;
        case TOOLBOX:
            initToolBoxButtons();
            break;
        case SQUAWKBOX:
            initSquawkBoxButtons();
            break;
        case SANDBOX:
            initSandBoxButtons();
            break;
        case FILES:
            alert(FILES);
            break;
        case RESOURCES:
            alert(RESOURCES);
            break;
        case MY_PROFILE:
            alert(MY_PROFILE);
            break;
        case GROUPS:
            alert(GROUPS);
            break;
        case PORTAL:
            alert(PORTAL);
            break;
        case FRIENDS:
            alert(FRIENDS);
            break;
        case HELP:
            alert(‘Help is comming soon’);
            break;
        case SIGN_OUT:
            document.location = “login.do?method=logout”;
            break;
        default:
            alert(‘Nothing was found’);
    }
}
/*
 *  Leaves visible only buttons that correspond to filebox
 /
function initFileBoxButtons() {
    mainToolBar.showItem(FILES);
    mainToolBar.showItem(RESOURCES);
    mainToolBar.hideItem(MY_PROFILE);
    mainToolBar.hideItem(GROUPS);
    mainToolBar.hideItem(PORTAL);
    mainToolBar.hideItem(FRIENDS);
}
/*
 *  Leaves visible only buttons that correspond to toolbox
 /
function initToolBoxButtons() {
    mainToolBar.hideItem(FILES);
    mainToolBar.hideItem(RESOURCES);
    mainToolBar.showItem(MY_PROFILE);
    mainToolBar.showItem(GROUPS);
    mainToolBar.showItem(PORTAL);
    mainToolBar.hideItem(FRIENDS);
}
/*
 *  Leaves visible only buttons that correspond to squawkbox
 /
function initSquawkBoxButtons() {
    mainToolBar.hideItem(FILES);
    mainToolBar.hideItem(RESOURCES);
    mainToolBar.hideItem(MY_PROFILE);
    mainToolBar.hideItem(GROUPS);
    mainToolBar.hideItem(PORTAL);
    mainToolBar.showItem(FRIENDS);
}
/*
 *  Leaves visible only buttons that correspond to sandbox
 */
function initSandBoxButtons() {
    mainToolBar.hideItem(FILES);
    mainToolBar.hideItem(RESOURCES);
    mainToolBar.hideItem(MY_PROFILE);
    mainToolBar.hideItem(GROUPS);
    mainToolBar.hideItem(PORTAL);
    mainToolBar.hideItem(FRIENDS);
}
init_xmls/basetoolbar.xml
=======================================
<?xml version='1.0' encoding='iso-8859-1'?>
    
    
    
    
    
    
    
    
    
    
    
text.html
===============================================
 
        
    
    
    
         
        
          
        
           
           
           
         
         
            
            
          
       
      
        
        
          Data loading is async, in your case code executed when XML with configuration not loaded yet. 
To resolve issue rewrite your code as 
signupToolBar.loadXML(“init_xmls/signintoolbar.xml”,function(){
         //code here will be called only after xml loading
         initFileBoxButtons(); 
}) ;
signupToolBar.showBar();