function initMenuBar() {
  
  // MenuBar handling copied from samples
  // in the Yahoo UI library

  // "click" event handler for each item in the root MenuBar instance

  function onMenuBarItemClick(p_sType, p_aArguments) {
            
    this.parent.hasFocus = true;
    var oActiveItem = this.parent.activeItem;
      
    // Hide any other submenus that might be visible
            
    if(oActiveItem && oActiveItem != this) {
       this.parent.clearActiveItem();
    }
            
    // Select and focus the current MenuItem instance
            
    this.cfg.setProperty("selected", true);
    this.focus();
            
    // Show the submenu for this instance
            
    var oSubmenu = this.cfg.getProperty("submenu");

    if(oSubmenu) {
      if(oSubmenu.cfg.getProperty("visible")) {
        oSubmenu.hide();
      } else {
        oSubmenu.show();                    
      }
    }

  }

  // "mouseover" event handler for each item in the root MenuBar instance

  function onMenuBarItemMouseOver(p_sType, p_aArguments) {
            
    var oActiveItem = this.parent.activeItem;
            
    // Hide any other submenus that might be visible
            
    if(oActiveItem && oActiveItem != this) {
      this.parent.clearActiveItem();
    }
 
    // Select and focus the current MenuItem instance
 
    this.cfg.setProperty("selected", true);
    this.focus();

    if(this.parent.hasFocus) {                  
      // Show the submenu for this instance
      var oSubmenu = this.cfg.getProperty("submenu");
      if(oSubmenu) {
        if(oSubmenu.cfg.getProperty("visible")) {
          oSubmenu.hide();    
        } else {
          oSubmenu.show();                    
        }
      }
    }

  }

  var oMenuBar = new YAHOO.widget.MenuBar(
    "menubar", 
    { fixedcenter: false }
  );
  oMenuBar.render();

  YAHOO.buzzWatch.menuBar = oMenuBar;
  YAHOO.buzzWatch.menuGo = oMenuBar.getItem(1);
  
  /*
      Add a "click" and "mouseover" event handler to each item 
      in the root MenuBar instnace
  */

  var i = oMenuBar.getItemGroups()[0].length - 1,
    oMenuBarItem;

  do {

    oMenuBarItem = oMenuBar.getItem(i);
                    
    if(oMenuBarItem) {

      oMenuBarItem.clickEvent.subscribe(
        onMenuBarItemClick,
        oMenuBarItem,
        true
      );

      oMenuBarItem.mouseOverEvent.subscribe(
        onMenuBarItemMouseOver,
        oMenuBarItem,
        true
      );
    }
                
  } while(i--);

  // "click" event handler for the document
   
  function onDocumentClick(p_oEvent) {
                
    YAHOO.buzzWatch.OverlayManager.hideAll();
   
    oMenuBar.hasFocus = false;
                    
    if(oMenuBar.activeItem) {

      oMenuBar.clearActiveItem();
      oMenuBar.activeItem.blur();
                    
    }

  }

  // Add a "click" handler for the document

  YAHOO.util.Event.addListener(
    document, 
    "click", 
    onDocumentClick
  );

  YAHOO.buzzWatch.OverlayManager = 
    new YAHOO.widget.OverlayManager();

  YAHOO.buzzWatch.OverlayManager.register(
    document.getElementById("menubar.file"));
      
  YAHOO.buzzWatch.OverlayManager.register(
    document.getElementById("menubar.go"));
      
  YAHOO.buzzWatch.OverlayManager.register(
    document.getElementById("menubar.view"));
 
  oMenuBar.show();
    
}